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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                        MANAGEMENT INVESTMENT COMPANIES



		Investment Company Act file number 811-21409

                          Pioneer Municipal High Income Advantage Trust
               (Exact name of registrant as specified in charter)


                       60 State Street, Boston, MA 02109
              (Address of principal executive offices) (ZIP code)


            Dorothy E. Bourassa, Pioneer Investment Management, Inc.,
                       60 State Street, Boston, MA 02109
                    (Name and address of agent for service)


Registrant's telephone number, including area code:  (617) 742-7825


Date of fiscal year end:  March 31


Date of reporting period:  April 1, 2006 through September 30, 2006


Form N-CSR is to be used by management investment companies to file reports with
the Commission not later than 10 days after the transmission to stockholders of
any report that is required to be transmitted to stockholders under Rule 30e-1
under the Investment Company Act of 1940 (17 CFR 270.30e-1).  The Commission may
use the information provided on Form N-CSR in its regulatory, disclosure review,
inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-CSR,
and the Commission will make this information public. A registrant is not
required to respond to the collection of information contained in Form N-CSR
unless the Form displays a currently valid Office of Management and Budget
("OMB") control number. Please direct comments concerning the accuracy of the
information collection burden estimate and any suggestions for reducing the
burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW,
Washington, DC 20549-0609.  The OMB has reviewed this collection of information
under the clearance requirements of 44 U.S.C. ss. 3507.


ITEM 1. REPORTS TO SHAREOWNERS.



--------------------------------------------------------------------------------




--------------------------------------------------------------------------------

                                     PIONEER
                                     -------
                                    MUNICIPAL
                                   HIGH INCOME
                                    ADVANTAGE
                                      TRUST

                                   Semiannual
                                     Report

                                     9/30/06


                              [LOGO]PIONEER
                                    Investments(R)




Table of Contents
--------------------------------------------------------------------------------

                                                                           
Letter to Shareowners                                                          2

Portfolio Management Discussion                                                4

Portfolio Summary                                                              8

Prices and Distributions                                                       9

Performance Update                                                            10

Schedule of Investments                                                       11

Financial Statements                                                          22

Financial Highlights                                                          25

Notes to Financial Statements                                                 27

Results of Shareowner Meeting                                                 37

Trustees, Officers and Service Providers                                      38





                                                                     President's

Dear Shareowner,
--------------------------------------------------------------------------------
Mature and emerging market economies around the world showed moderate
improvement after a flat second quarter. The U.S. saw some resurgence of
growth, which we expect to continue through the fourth quarter of 2006 and into
2007, although this growth may be slow with housing sector measures down in
recent months. While inflation pressures have risen slightly in recent months,
we believe the United States may now be at the end of the Fed's monetary
tightening cycle. Mature economies, led by Japan, remain firm, as do European
economic prospects, with strong GDP data reflecting the broad-based strength
seen in crucial indicators.

U.S. economic growth was back on track after lackluster market results prior to
Labor Day. Consumer spending rose with receding gas prices, just in time for
the back-to-school season, which retailers now consider the second most
lucrative period after the Christmas season. U.S. economic growth is in line
with our projections; we anticipate U.S. GDP finishing with a level of around
3.0% for 2006.

In our view, the pace of corporate earnings growth should slow amid pressure
from high raw materials costs and moderating economic growth. However, modest
U.S. dollar depreciation and improving growth overseas should offer some
support to U.S. earnings.

The European economy continues to improve and appears to be at its healthiest
in six years, with business confidence showing improvement across sectors and
consumers becoming more optimistic. While business sentiment indicators have
had a tendency to over-estimate growth in recent years, their broad-based
improvement across countries since 2005 is a clear sign that European economic
growth should continue through 2006.

The positive long-term drivers of emerging markets remain in place: improving
domestic growth and inflation stability; structural reform; debt
sustainability; and favorable demographics. Together, the emerging markets'
current account surplus is at record highs while external debt as a percentage
of GDP is at its lowest since 1991.


2


Letter



In summary, we think that despite the existence of some inflation pressures
seen by the Federal Reserve and its counterparts in developed economies, it
seems as if interest rates will remain mostly unchanged. U.S. economic growth
is expected to remain positive, as it should among the developed nations for
the remainder of 2006. Any further geopolitical issues and rising energy prices
could lead to deceleration, but not a derailment from the current healthy pace
of economic growth, as investment is expected to remain robust, benefiting from
sustained internal and international demand worldwide.

Our cautiously optimistic outlook reinforces the importance of Pioneer's
message that investors should remain diversified, take a long-term view, and
base investment decisions on economic and market fundamentals rather than on
emotion. Our investment philosophy and approach continue to be based on the use
of fundamental research to identify a range of opportunities that offer an
attractive balance of risk and reward to help Trust shareowners work toward
their long-term goals.

Respectfully,

/s/ Osbert M. Hood

Osbert M. Hood, President
Pioneer Investment Management, Inc.

Any information in this shareowner report regarding market or economic trends
or the factors influencing the Trust's historical or future performance are
statements of the opinion of Trust management as of the date of this report.
These statements should not be relied upon for any other purposes. Past
performance is no guarantee of future results, and there is no guarantee that
market forecasts discussed will be realized.


                                                                               3


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
PORTFOLIO MANAGEMENT DISCUSSION 9/30/06
--------------------------------------------------------------------------------

In an environment of moderating economic growth and lower interest rates, the
Trust's portfolio of high-yield and investment-grade municipal bonds continued
to provide shareholders with relatively strong returns. In the following
interview, David Eurkus, a member of the management team for Pioneer Municipal
High Income Advantage Trust, discusses some of the factors that had an impact
on the municipal bond market and the Trust.

Q:  How did the Trust perform over the past six months?

A:  For the six-month period ended September 30, 2006, Pioneer Municipal High
    Income Advantage Trust produced a total return of 7.06% at net asset value
    and 3.02% at market price. As of September 30, 2006, the Trust was selling
    at a discount of market price to net asset value of 4.1%. The Lehman
    Brothers Municipal Bond Index returned 3.44%, while the Lehman Brothers
    Non-Investment Grade Municipal Bond Index returned 5.84% for the same
    period. At the end of the six months, the Trust held 137 issues in 35
    states, territories and the District of Columbia. On September 30, 2006,
    the Trust's current yield was 5.60% and the 30-day SEC yield was 7.53%.
    When reviewing the Trust's relative performance, it is important to note
    that the Lehman Brothers Municipal Bond Index tracks the performance only
    of investment-grade bonds and does not include below investment-grade
    bonds, which are a significant part of the portfolio.

    Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most
    recent month-end performance results. Current performance may be lower or
    higher than the performance data quoted.

    The performance data quoted represents past performance, which is no
    guarantee of future results. Investment return and principal value will
    fluctuate, and shares, when redeemed, may be worth more or less than their
    original cost.

Q:  What was the investment environment like during the period?

A:  After boosting interest rates 17 times over the past two years, the Federal
    Reserve left rates unchanged in August and September, as the pace of
    economic growth slowed, and inflation appeared to be under control. At the
    end of the six-month period, the Federal funds rate, the rate banks charge
    for overnight loans, was 5.25%. In this environment, municipal bond yields
    declined across the yield spectrum and prices rose.


4


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

Q:  How did you manage the Trust against this backdrop?

A:  The Trust was fully invested throughout the period in sectors that are
    important to the growth of the U.S. economy. The biggest positions were in
    health care, transportation and various revenue bonds in the public power,
    education, housing and water and sewer areas, among others. The Trust also
    had investments in tobacco bonds, which are backed by tobacco companies'
    payments to states. Over the six months, we created a new position in
    bonds issued by correctional institutions that have been privatized by the
    federal government and are now being built and managed by private
    corporations. The Trust had a mix of investment-grade securities, below
    investment-grade securities and cash equivalents (see page eight). At the
    end of the period, the average quality of the portfolio was BBB-, based on
    S&P ratings.

Q:  What contributed to performance?

A:  While high-yield bonds gave performance the biggest boost, nearly all of the
    Trust's investments benefited from the capital appreciation that occurred
    as yields declined and prices rose. The best performing positions in the
    portfolio included hospital/health care (+5.1%), airline/airports (+10.5%)
    and power and energy (+10.5%).

    On September 30, 2006, 30% of the Trust was leveraged, which means that in
    the past we borrowed funds at low rates and invested those funds in
    high-yielding bonds. This leveraging strategy has aided return for several
    years. Over the six months, short-term rates stabilized and then started
    to decline toward the end of the period. Should rates continue to decline,
    the cost of borrowing would also go down, providing the Trust with a
    modest amount of additional income. A rise in short-term interest rates in
    the future would add to the Trust's borrowing costs, and the ability to
    sustain present dividend levels could be affected.

Q:  What detracted from performance?

A:  Because of the relatively strong economy, many issuers have a surplus of
    cash that they are using to pay down their bond debt earlier than
    expected. As some of our bonds have been called, or redeemed, before their
    maturity dates, we have invested the proceeds in new securities that have
    slightly lower yields than the redeemed bonds. Having bonds called sooner
    than expected is a


                                                                               5


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
PORTFOLIO MANAGEMENT DISCUSSION 9/30/06                             (continued)
--------------------------------------------------------------------------------

    normal part of the fixed-income investment process, and we continue to
    find attractive investment opportunities.

Q:  What is your outlook?

A:  In an environment of relatively strong, though moderating, economic growth,
    we have seen a substantial rise in general tax revenues in most states
    that has reduced the need for additional municipal financing. This
    situation has resulted in a contraction in the supply of municipal bonds
    at a time when demand for income on the part of investors has remained
    robust. As we move into 2007, this supply/demand dynamic has the potential
    to increase the value of the bonds in the Trust. As has been the case in
    the past, we intend to keep the portfolio fully invested and diversified
    among economic sectors and will continue to hold a combination of
    high-yield and below investment-grade bonds.

Investments in high-yield or lower-rated securities are subject to
greater-than-average risk. The Trust may invest in securities of issuers that
are in default or that are in bankruptcy.

A portion of income may be subject to state, federal, and/or alternative
minimum tax. Capital gains, if any, are subject to a capital gains tax. When
interest rates rise, the prices of fixed-income securities in the Trust will
generally fall. Conversely, when interest rates fall, the prices of
fixed-income securities in the Trust will generally rise. By concentrating in
municipal securities, the portfolio is more susceptible to adverse economic,
political or regulatory developments than is a portfolio that invests more
broadly. Investments in the Trust are subject to possible loss due to the
financial failure of underlying securities and their inability to meet their
debt obligations.

The Trust may use leverage through the issuance of preferred shares with an
aggregate liquidation preference of up to 331/3% of the Trust's total assets
after such issuance. Leverage creates significant risks, including the risk
that the Trust's income or capital appreciation will not be sufficient to cover
the cost of leverage, which may adversely affect the return for the holders of
common shares.

Risks of investing in the Trust are discussed in greater detail in the Trust's
registration statement on Form N-2 relating to its common shares.


6


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

Any information in this shareowner report regarding market or economic trends
or the factors influencing the Trust's historical or future performance are
statements of the opinion of Trust management as of the date of this report.
These statements should not be relied upon for any other purposes. Past
performance is no guarantee of future results, and there is no guarantee that
market forecasts discussed will be realized.


                                                                               7


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
PORTFOLIO SUMMARY 9/30/06
--------------------------------------------------------------------------------

Portfolio Diversification
--------------------------------------------------------------------------------
(As a percentage of total investment portfolio)

  [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL]


                                                                         
Health Revenue                                                              25.0%
Airport Revenue                                                             16.5%
Insured                                                                     14.1%
Tobacco Revenue                                                              9.4%
Development Revenue                                                          9.3%
Transportation Revenue                                                       8.1%
Pollution Control Revenue                                                    5.7%
Facilities Revenue                                                           5.2%
Education Revenue                                                            2.1%
Housing Revenue                                                              1.1%
General Obligation                                                           1.1%
Water Revenue                                                                1.1%
Other                                                                        0.8%
Power Revenue                                                                0.5%



Portfolio Maturity
--------------------------------------------------------------------------------
(As a percentage of long-term holdings)

  [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL]


                                                                          
0-1 years                                                                   10.1%
1-3 years                                                                   12.2%
3-6 years                                                                   41.7%
6-8 years                                                                   12.8%
8-10 years                                                                   4.7%
10+ years                                                                   18.5%



Quality Distribution
--------------------------------------------------------------------------------
(As a percentage of total investment portfolio; based on S&P ratings)

  [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL]


                                                                         
AAA                                                                          8.8%
AA                                                                           0.8%
A                                                                            2.9%
BBB                                                                         22.6%
BB                                                                           7.1%
B                                                                           13.9%
CCC                                                                          6.6%
Not Rated                                                                   37.0%
Cash Equivalents                                                             0.3%



8


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
PRICES AND DISTRIBUTIONS 9/30/06
--------------------------------------------------------------------------------


Share Prices and Distributions
--------------------------------------------------------------------------------



Market Value
per Common Share     9/30/06      3/31/06
                            
                     $14.99       $14.99





Net Asset Value
per Common Share     9/30/06      3/31/06
                            
                     $15.63       $15.04





Distributions per    Net
Common Share         Investment   Short-Term      Long-Term
(4/1/06 - 9/30/06)   Income       Capital Gains   Capital Gains
                                         
                     $0.44        $      -        $      -



10 Largest Holdings
--------------------------------------------------------------------------------
(As a percentage of long-term holdings)*


                                                                         
  1. Dallas-Fort Worth International Airport Revenue, 6.0%, 11/1/14         2.81%
  2. New Jersey Economic Development Authority Revenue,
       6.25%, 9/15/29                                                       2.72
  3. Alliance Airport Authority Special Facilities Revenue,
       7.5%, 12/1/29                                                        2.33
  4. Charlotte North Carolina Special Facilities Revenue,
       5.6%, 7/1/27                                                         2.31
  5. University of California, RIB, 7.651%, 5/15/38 (144A)                  2.22
  6. Houston Texas Airport System Revenue, 6.75%, 7/1/29                    2.16
  7. Miami-Dade County Aviation Revenue, 5.0%, 10/1/37                      2.12
  8. Indiana State Development Finance Authority Revenue,
       5.75%, 10/1/11                                                       2.11
  9. Port Seattle Washington Special Facilities Revenue,
       5.0%, 4/1/31                                                         2.09
 10. Tobacco Settlement Financing Corp., 5.875%, 5/15/39                    2.03


*  This list excludes temporary cash and derivative investments. The portfolio
   is actively managed, and current holdings may be different. The holdings
   listed should not be considered recommendations to buy or sell any security
   listed.


                                                                               9


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
PERFORMANCE UPDATE 9/30/06
--------------------------------------------------------------------------------

Investment Returns
--------------------------------------------------------------------------------
The mountain chart on the right shows the change in market value, including
reinvestment of dividends and distributions, of a $10,000 investment made in
common shares of Pioneer Municipal High Income Advantage Trust, compared to that
of the Lehman Brothers Municipal Bond Index and Lehman Brothers Non-Investment
Grade Municipal Bond Index.



----------------------------------------------------
Cumulative Total Returns
(As of September 30, 2006)
                             Net Asset       Market
Period                      Value (NAV)      Price
                                       
 Life-of-Trust
 (10/20/03)                   34.35%         23.09%
 1 Year                       13.47          8.60
----------------------------------------------------


[THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL]



          Pioneer Municipal                                 Lehman Brothers
            High Income            Lehman Brothers        Non-Investment Grade
           Advantage Trust       Municipal Bond Index     Municipal Bond Index
                                                        
10/03           10040                   10000                    10000
 9/04            9965                   10513                    10864
 9/05           11335                   10939                    12031
 9/06           12310                   11425                    13323


Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent
month-end performance results. Current performance may be lower or higher than
the performance data quoted.

Performance data shown represents past performance. Past performance is no
guarantee of future results. Investment return and market price will fluctuate,
and your shares may trade below net asset value ("NAV"), due to such factors as
interest rate changes, and the perceived credit quality of borrowers.

Total investment return does not reflect broker sales charges or commissions.
All performance is for common shares of the Trust.

Closed-end funds, unlike open-end funds, are not continuously offered. There is
a one-time public offering and, once issued, shares of closed-end funds are sold
in the open market through a stock exchange and frequently trade at prices lower
than their NAV. NAV is total assets less total liabilities which includes
preferred shares divided by the number of common shares outstanding.

When NAV is lower than market price, dividends are assumed to be reinvested at
the greater of NAV or 95% of the market price. When NAV is higher, dividends are
assumed to be reinvested at market price.

The performance table and graph do not reflect the deduction of fees and taxes
that a shareowner would pay on Trust distributions or the redemption of Trust
shares.

Index comparison begins October 31, 2003. The Lehman Brothers Municipal Bond
Index is a broad measure of the municipal bond market. Lehman Brothers
Non-Investment Grade Municipal Bond Index totals over $26 billion in market
value and maintains over 1300 securities. Municipal bonds in this index have the
following requirements: maturities of one year or greater, sub investment grade
(below Baa or non-rated), fixed coupon rate, issue date later than 12/31/90,
deal size over $20 million, maturity size of at least $3 million. Index returns
are calculated monthly, assume reinvestment of dividends and, unlike Trust
returns, do not reflect any fees, expenses or sales charges. You cannot invest
directly in the Indexes.


10


Pioneer Municipal High Income Advantage Trust

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SCHEDULE OF INVESTMENTS 9/30/06 (unaudited)
--------------------------------------------------------------------------------



                       S&P/
                       Moody's
Principal              Ratings
Amount                 (unaudited)                                                               Value
                                                                                 
                                     TAX-EXEMPT OBLIGATIONS - 138.3% of Net Assets
                                     Alaska - 1.3%
   $   3,875,000(a)    NR/Aaa        Alaska State Housing Finance Corp., RIB,
                                     10.574%, 6/1/49 (144A)                               $  4,436,100
                                                                                          ------------
                                     Arizona - 4.2%
       5,000,000       NR/NR         Casa Grande Industrial Development Authority,
                                     Hospital Revenue, 7.625%, 12/1/29                    $  5,535,350
       3,140,000(a)    NR/Aaa        Downtown Phoenix Hotel Corp., RIB,
                                     7.284%, 7/1/40 (144A)                                   3,534,415
       1,000,000       NR/Baa3       Pima County Industrial Development Authority,
                                     6.3%, 7/1/31 (144A)                                     1,056,070
       1,570,000       NR/Baa3       Pima County Industrial Development Authority,
                                     6.75%, 7/1/31                                           1,664,420
       1,000,000+      NR/NR         Pima County Industrial Development Authority,
                                     7.5%, 7/1/34                                            1,221,610
       2,000,000       NR/NR         San Luis Facility Development Corp.,
                                     7.25%, 5/1/27                                           2,032,000
                                                                                          ------------
                                                                                          $ 15,043,865
                                                                                          ------------
                                     California - 6.6%
       2,680,000       BBB/Baa3      Golden State Tobacco Securitization Corp.,
                                     6.75%, 6/1/39                                        $  3,034,725
       9,520,000(a)    NR/Aaa        University of California, RIB,
                                     7.651%, 5/15/38 (144A)                                 10,891,070
       9,455,000       B+/NR         Valley Health System Hospital Revenue,
                                     6.875%, 5/15/23                                         9,468,615
                                                                                          ------------
                                                                                          $ 23,394,410
                                                                                          ------------
                                     Colorado - 1.9%
       2,850,000       BBB/Baa3      Denver Health & Hospital Authority Healthcare
                                     Revenue, 6.0%, 12/1/31                               $  3,040,922
       3,650,000       CCC/B3        Northwest Parkway Public Highway Authority,
                                     7.125%, 6/15/41                                         3,627,115
                                                                                          ------------
                                                                                          $  6,668,037
                                                                                          ------------
                                     District of Columbia - 2.1%
       2,700,000       BBB/Baa3      District of Columbia Tobacco Settlement Financing
                                     Corp., 6.5%, 5/15/33                                 $  3,170,070
       4,000,000       BBB/Baa3      District of Columbia Tobacco Settlement Financing
                                     Corp., 6.75%, 5/15/40                                   4,373,840
                                                                                          ------------
                                                                                          $  7,543,910
                                                                                          ------------


  The accompanying notes are an integral part of these financial statements.  11




Pioneer Municipal High Income Advantage Trust

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SCHEDULE OF INVESTMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------



                     S&P/
                     Moody's
Principal            Ratings
Amount               (unaudited)                                                                 Value
                                                                                
                                   Florida - 5.7%
  $  1,000,000       NR/NR         Greater Orlando Aviation Authority,
                                   6.5%, 11/15/36                                        $  1,039,620
     4,500,000       BBB-/Baa2     Hillsborough County Florida Industrial Development
                                   Authority Pollution Control Revenue,
                                   5.5%, 10/1/23                                            4,656,510
     2,000,000       NR/NR         Hillsborough County Florida Industrial Development
                                   Authority Pollution Control Revenue,
                                   6.75%, 7/1/29                                            2,044,860
       500,000       BB+/NR        Miami Beach Health Facilities Authority,
                                   5.375%, 11/15/28                                           507,350
     1,500,000       BB+/Ba1       Miami Beach Health Facilities Authority,
                                   6.7%, 11/15/19                                           1,663,350
    10,000,000       AAA/Aaa       Miami-Dade County Aviation Revenue,
                                   5.0%, 10/1/37                                           10,438,900
                                                                                         ------------
                                                                                         $ 20,350,590
                                                                                         ------------
                                   Georgia - 2.7%
     4,000,000(a)    NR/Aaa        Atlanta Georgia Water and Wastewater Revenue,
                                   RIB, 7.469%, 11/1/43 (144A)                           $  4,539,440
     2,250,000       NR/NR         Brunswick & Glynn County Development Authority
                                   Revenue, 7.125%, 1/1/25                                  2,214,720
     1,065,000       NR/B2         Effingham County Industrial Development Authority,
                                   6.5%, 6/1/31                                             1,127,792
     1,650,000       NR/NR         Savannah Georgia Economic Development
                                   Authority Revenue, 7.4%, 1/1/34                          1,740,453
                                                                                         ------------
                                                                                         $  9,622,405
                                                                                         ------------
                                   Guam - 1.6%
     5,000,000       B+/Ba3        Northern Mariana Islands, 6.75%, 10/1/33              $  5,602,650
                                                                                         ------------
                                   Idaho - 2.3%
     2,000,000       BBB-/Baa3     Power County Industrial Development Corp.,
                                   6.45%, 8/1/32                                         $  2,132,980
     5,920,000       BBB-/Baa3     Power County Pollution Control Revenue,
                                   5.625% 10/1/14                                           6,097,955
                                                                                         ------------
                                                                                         $  8,230,935
                                                                                         ------------


12  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------



                S&P/
                Moody's
Principal       Ratings
Amount          (unaudited)                                                             Value
                                                                        
                              Illinois - 4.6%
$4,000,000      NR/NR         Centerpoint Intermodal Center, 8.0%,
                              6/15/23 (144A)                                     $  4,100,400
 1,000,000      NR/NR         Illinois Finance Authority Revenue,
                              5.1%, 8/15/31                                         1,012,170
 1,000,000      NR/NR         Illinois Finance Authority Revenue,
                              6.0%, 11/15/27                                        1,046,260
 3,000,000      NR/NR         Illinois Finance Authority Revenue,
                              6.0%, 11/15/39                                        3,117,420
 1,645,000      NR/NR         Illinois Health Facilities Authority Revenue,
                              5.5%, 11/15/19                                        1,658,390
 1,400,000      NR/B2         Illinois Health Facilities Authority Revenue,
                              6.7%, 3/1/14                                          1,400,224
 2,400,000      NR/B2         Illinois Health Facilities Authority Revenue,
                              6.75%, 3/1/24                                         2,399,856
 1,500,000      NR/NR         Illinois Health Facilities Authority Revenue,
                              6.9%, 11/15/33                                        1,645,530
                                                                                 ------------
                                                                                 $ 16,380,250
                                                                                 ------------
                              Indiana - 5.0%
10,000,000      BBB-/Ba1      Indiana State Development Finance Authority
                              Revenue, 5.75%, 10/1/11                            $ 10,380,000
 5,000,000      NR/B2         Jasper County Industrial Economic Development
                              Revenue, 5.6%, 4/1/29                                 5,039,500
 2,315,000      NR/NR         Vincennes Industrial Economic Development
                              Revenue, 6.25%, 1/1/24                                2,330,071
                                                                                 ------------
                                                                                 $ 17,749,571
                                                                                 ------------
                              Kentucky - 1.4%
   500,000      BB-/NR        Kentucky Economic Development Finance Authority
                              Hospital System Revenue, 5.7%, 10/1/10             $    508,955
 4,400,000      BB-/NR        Kentucky Economic Development Finance Authority
                              Hospital System Revenue, 5.875%, 10/1/22              4,468,024
                                                                                 ------------
                                                                                 $  4,976,979
                                                                                 ------------
                              Louisiana - 3.0%
   750,000      BBB+/NR       Opelousas Louisiana General Hospital Authority
                              Revenue, 5.75%, 10/1/23                            $    797,918
 9,415,000      BBB/Baa3      Tobacco Settlement Financing Corp.,
                              5.875%, 5/15/39                                       9,973,874
                                                                                 ------------
                                                                                 $ 10,771,792
                                                                                 ------------
                              Maryland - 0.4%
 1,500,000      A/A2          Maryland Health & Higher Educational Facilities
                              Authority, 5.125%, 10/1/45                         $  1,563,930
                                                                                 ------------


  The accompanying notes are an integral part of these financial statements.  13




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
SCHEDULE OF INVESTMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------



                     S&P/
                     Moody's
Principal            Ratings
Amount               (unaudited)                                                            Value
                                                                            
                                   Massachusetts - 9.3%
  $  1,000,000       AAA/Aaa       Lynn Massachusetts Water & Sewer Commission
                                   General Revenue, 5.0%, 12/1/32                    $  1,045,890
     5,000,000       AAA/Aa2       Massachusetts Bay Transportation Authority
                                   Revenue, 5.0%, 7/1/31                                5,620,000
     5,000,000       AAA/Aa1       Massachusetts Bay Transportation Authority
                                   Revenue, 5.25%, 7/1/31                               5,811,450
     2,195,000       BBB-/Baa3     Massachusetts Health & Educational Facilities
                                   Authority Revenue, 5.375%, 7/15/28                   2,214,272
     1,000,000       BBB-/Baa3     Massachusetts Health & Educational Facilities
                                   Authority Revenue, 6.35%, 7/15/32                    1,070,340
     3,520,000(a)    NR/Aaa        Massachusetts State College Building Authority
                                   Project Revenue, RIB, 7.654%, 5/1/41 (144A)          4,115,267
     1,740,000       BB/NR         Massachusetts State Development Finance
                                   Agency, 5.25%, 10/1/18                               1,622,393
     2,920,000       NR/Ba2        Massachusetts State Development Finance
                                   Agency, 6.0%, 11/1/28                                2,974,779
     4,710,000       NR/NR         Massachusetts State Development Finance
                                   Agency, 7.1%, 7/1/32                                 4,915,686
     3,475,000(a)    NR/Aa3        Massachusetts State Housing Finance Agency,
                                   RIB, 8.254%, 12/1/45 (144A)                          3,693,299
                                                                                     ------------
                                                                                     $ 33,083,376
                                                                                     ------------
                                   Michigan - 4.4%
     3,000,000+      AAA/Baa3      Delta County Michigan Economic Development
                                   Corp., 6.25%, 4/15/27                             $  3,395,970
     3,000,000       BB/NR         Macomb County Hospital Finance Authority
                                   Revenue, 5.875%, 11/15/34                            3,170,310
     4,130,000       BB-/Ba3       Michigan State Hospital Finance Authority
                                   Revenue, 5.5%, 8/15/23                               4,054,091
     1,000,000       NR/NR         Michigan State Strategic Fund Solid Waste
                                   Disposal Revenue, 7.375%, 1/15/22                    1,021,800
     3,000,000(b)    NR/NR         Wayne Charter County Michigan Special Airport
                                   Facilities Revenue, 6.0%, 12/1/29                    1,813,380
     3,405,000(b)    NR/NR         Wayne Charter County Michigan Special Airport
                                   Facilities Revenue, 6.75%, 12/1/15                   2,125,163
                                                                                     ------------
                                                                                     $ 15,580,714
                                                                                     ------------


14  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------



                       S&P/
                       Moody's
Principal              Ratings
Amount                 (unaudited)                                                            Value
                                                                               
                                     Minnesota - 0.9%
   $   4,800,000(b)    NR/NR         Minneapolis/St. Paul Metropolitan Airports,
                                     7.0%, 4/1/25                                       $  3,246,960
                                                                                        ------------
                                     Missouri - 0.9%
       1,500,000       NR/Caa2       St. Louis Industrial Development Authority
                                     Revenue, 7.2%, 12/15/28                            $  1,392,825
       2,000,000       NR/Caa2       St. Louis Industrial Development Authority
                                     Revenue, 7.25%, 12/15/35                              1,880,040
                                                                                        ------------
                                                                                        $  3,272,865
                                                                                        ------------
                                     Montana - 0.7%
       2,660,000(c)    NR/NR         Hardin Increment Industrial Infrastructure
                                     Development Revenue, 0.0%, 9/1/31                  $  1,592,835
       1,000,000       NR/NR         Two Rivers Authority, Inc., Project Revenue,
                                     7.375%, 11/1/27                                         984,990
                                                                                        ------------
                                                                                        $  2,577,825
                                                                                        ------------
                                     Nevada - 2.3%
       2,425,000       B/NR          Clark County Industrial Development Revenue,
                                     5.5%, 10/1/30                                      $  2,424,782
       2,500,000       B/NR          Clark County Industrial Development Revenue,
                                     5.9%, 11/1/32                                         2,500,975
       1,600,000       NR/NR         Nevada State Department of Business & Industry,
                                     7.25%, 1/1/23                                         1,669,792
       1,000,000       NR/NR         Nevada State Department of Business & Industry,
                                     7.375%, 1/1/30                                        1,046,870
         500,000       NR/NR         Nevada State Department of Business & Industry,
                                     7.375%, 1/1/40                                          522,300
                                                                                        ------------
                                                                                        $  8,164,719
                                                                                        ------------
                                     New Hampshire - 1.5%
       1,000,000       A/NR          New Hampshire Health & Educational Facilities
                                     Authority Revenue, 5.375%, 1/1/34                  $  1,049,410
       1,125,000       NR/NR         New Hampshire Health & Educational Facilities
                                     Authority Revenue, 5.875%, 7/1/34                     1,182,206
       3,000,000+      NR/NR         New Hampshire Higher Educational & Health
                                     Facilities Authority Revenue, 6.25%, 1/1/18           3,141,750
                                                                                        ------------
                                                                                        $  5,373,366
                                                                                        ------------


  The accompanying notes are an integral part of these financial statements.  15




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
SCHEDULE OF INVESTMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------



                     S&P/
                     Moody's
Principal            Ratings
Amount               (unaudited)                                                            Value
                                                                            
                                   New Jersey - 9.0%
  $ 13,000,000       B/Caa1        New Jersey Economic Development Authority
                                   Revenue, 6.25%, 9/15/29                           $ 13,377,000
     2,500,000       BBB/Baa1      New Jersey Health Care Facilities Financing
                                   Authority Revenue, 5.375%, 7/1/33                    2,603,850
     1,420,000       CCC/B3        New Jersey Health Care Facilities Financing
                                   Authority Revenue, 7.5%, 7/1/21                      1,422,102
     2,495,000(a)    NR/Aaa        New Jersey State Turnpike Authority, RIB,
                                   9.412%, 1/1/28 (144A)                                4,085,288
     1,000,000       BBB/Baa3      Tobacco Settlement Financing Corp.,
                                   6.25%, 6/1/43                                        1,092,600
     3,250,000       BBB/Baa3      Tobacco Settlement Financing Corp.,
                                   6.75%, 6/1/39                                        3,657,225
     5,000,000       BBB/Baa3      Tobacco Settlement Financing Corp.,
                                   7.0%, 6/1/41                                         5,738,000
                                                                                     ------------
                                                                                     $ 31,976,065
                                                                                     ------------
                                   New York - 10.8%
     3,000,000       NR/NR         Dutchess County Industrial Development Agency
                                   Revenue, 7.5%, 3/1/29                             $  3,305,010
     5,000,000       A/A3          Nassau County New York Industrial Development
                                   Agency Revenue, 5.25%, 6/1/27                        5,193,300
     6,980,000       BB-/Ba2       New York City Industrial Development Agency,
                                   5.25%, 12/1/32                                       6,718,250
     2,000,000       A/NR          New York City Industrial Development Agency,
                                   5.375%, 6/1/23                                       2,095,460
     2,000,000       CCC+/Caa2     New York City Industrial Development Agency,
                                   6.9%, 8/1/24                                         2,000,320
     3,950,000       BB-/Ba2       New York City Industrial Development Agency,
                                   7.625%, 12/1/32                                      4,421,986
     2,700,000       NR/NR         New York City Industrial Development Agency,
                                   7.8%, 1/1/16                                         2,761,209
     5,000,000       AAA/Aaa       New York State Environmental Facilities Corp.,
                                   5.0%, 6/15/33                                        5,222,600
     4,500,000       A/NR          Suffolk County New York Industrial Development
                                   Agency, 5.0%, 6/1/36                                 4,624,830
     2,000,000       NR/NR         Yonkers Industrial Development Agency Civic
                                   Facilities Revenue, 6.15%, 3/1/15                    2,005,720
                                                                                     ------------
                                                                                     $ 38,348,685
                                                                                     ------------


16  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------



                 S&P/
                 Moody's
Principal        Ratings
Amount           (unaudited)                                                              Value
                                                                          
                               North Carolina - 6.5%
$11,350,000      NR/NR         Charlotte North Carolina Special Facilities
                               Revenue, 5.6%, 7/1/27                               $ 11,352,724
  7,140,000      NR/NR         Charlotte North Carolina Special Facilities
                               Revenue, 7.75%, 2/1/28                                 7,649,582
  4,000,000      AA+/Aa1       North Carolina Capital Facilities Finance Agency
                               Revenue 5.0%, 10/1/41                                  4,192,000
                                                                                   ------------
                                                                                   $ 23,194,306
                                                                                   ------------
                               Ohio - 2.7%
  3,900,000      B/NR          Belmont County Health System Revenue,
                               5.7%, 1/1/13                                        $  3,833,349
  1,000,000      B/NR          Belmont County Health System Revenue,
                               5.8%, 1/1/18                                             973,340
  5,000,000      B-/Caa1       Cleveland Airport Special Revenue,
                               5.375%, 9/15/27                                        4,850,100
                                                                                   ------------
                                                                                   $  9,656,789
                                                                                   ------------
                               Oklahoma - 1.0%
  2,180,000      BB/NR         Jackson County Memorial Hospital Authority
                               Revenue, 7.3%, 8/1/15                               $  2,191,401
  1,500,000      B/Caa2        Tulsa Municipal Airport Transportation Revenue,
                               7.35%, 12/1/11                                         1,507,470
                                                                                   ------------
                                                                                   $  3,698,871
                                                                                   ------------
                               Oregon - 0.7%
  2,500,000      NR/NR         Western Generation Agency Cogeneration Project
                               Revenue, 7.125%, 1/1/21                             $  2,508,925
                                                                                   ------------
                               Pennsylvania - 6.5%
  3,000,000      B+/Ba3        Allegheny County Hospital Development Authority
                               Revenue, 9.25%, 11/15/22                            $  3,555,750
    500,000      B+/Ba3        Allegheny County Hospital Development Authority
                               Revenue, 9.25%, 11/15/30                                 591,630
  1,000,000      BBB-/NR       Clarion County Hospital Authority Revenue,
                               5.625%, 7/1/21                                         1,016,070
  3,735,000      B/NR          Columbia County Hospital Authority Revenue,
                               5.85%, 6/1/24                                          3,439,039
  1,250,000      BBB/Ba2       Hazleton Health Services Authority Hospital
                               Revenue, 6.125%, 7/1/16                                1,250,325
  3,360,000      NR/Baa3       Montgomery County Higher Education & Health
                               Authority Hospital Revenue, 6.6%, 7/1/10               3,430,829
  1,430,000      BB+/NR        Pennsylvania Economic Development Financing
                               Authority Revenue, 5.125%, 6/1/18                      1,399,798


  The accompanying notes are an integral part of these financial statements.  17




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
SCHEDULE OF INVESTMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------



                   S&P/
                   Moody's
Principal          Ratings
Amount             (unaudited)                                                                Value

                                                                              
                                 Pennsylvania - (continued)
$ 1,805,000        BB+/NR        Pennsylvania Economic Development Financing
                                 Authority Revenue, 5.3%, 6/1/10                       $  1,809,440
 2,330,000         BB+/NR        Pennsylvania Economic Development Financing
                                 Authority Revenue, 5.35%, 6/1/11                         2,336,454
 2,005,000         B-/NR         Scranton-Lackawanna Health & Welfare Authority
                                 Revenue, 6.1%, 7/1/11                                    2,009,792
 2,245,000         B-/NR         Scranton-Lackawanna Health & Welfare Authority
                                 Revenue, 6.15%, 7/1/12                                   2,251,488
                                                                                       ------------
                                                                                       $ 23,090,615
                                                                                       ------------
                                 Rhode Island - 3.9%
 4,485,000         NR/NR         Central Falls Rhode Island Detention Facilities
                                 Revenue, 7.25%, 7/15/35                               $  5,040,467
 8,285,000         BBB/Baa3      Tobacco Settlement Financing Corp.,
                                 6.25%, 6/1/42                                            8,821,868
                                                                                       ------------
                                                                                       $ 13,862,335
                                                                                       ------------
                                 South Carolina - 5.9%
 1,500,000         B-/NR         Connector 2000 Association, Inc., Toll Road
                                 Revenue, 5.375%, 1/1/38                               $  1,341,570
 1,600,000         BBB/NR        Loris Community Hospital District,
                                 5.625%, 1/1/29                                           1,653,856
 7,140,000+        BBB+/Baa1     South Carolina Jobs Economic Development
                                 Authority Revenue, 6.375%, 8/1/34                        8,268,905
   860,000         BBB+/Baa1     South Carolina Jobs Economic Development
                                 Authority Revenue, 6.375%, 8/1/34                          970,673
 3,000,000         NR/NR         South Carolina Jobs Economic Development
                                 Authority Revenue, 8.0%, 10/1/31                         3,485,220
 4,400,000         BBB/Baa3      Tobacco Settlement Revenue Management,
                                 6.375%, 5/15/30                                          5,049,044
                                                                                       ------------
                                                                                       $ 20,769,268
                                                                                       ------------
                                 Tennessee - 2.5%
 1,000,000         BBB+/Baa2     Johnson City Health & Educational Facilities Board
                                 Hospital Revenue, 7.5%, 7/1/33                        $  1,170,400
 7,000,000         NR/Baa3       Knox County Health Educational & Housing
                                 Facilities Board Hospital Revenue,
                                 6.5%, 4/15/31                                            7,716,660
                                                                                       ------------
                                                                                       $  8,887,060
                                                                                       ------------


18  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------



                     S&P/
                     Moody's
Principal            Ratings
Amount               (unaudited)                                                                  Value
                                                                               
                                   Texas - 18.3%
  $ 11,300,000       CCC+/Caa2     Alliance Airport Authority Special Facilities
                                   Revenue, 7.5%, 12/1/29                               $ 11,463,850
     8,650,000       BBB-/NR       Brazos River Authority Pollution Control Revenue,
                                   6.75%, 10/1/38                                          9,750,626
    13,885,000       CCC+/Caa2     Dallas-Fort Worth International Airport Revenue,
                                   6.0%, 11/1/14                                          13,830,571
    10,000,000       B-/Caa1       Houston Texas Airport System Revenue,
                                   6.75%, 7/1/29                                          10,642,600
       845,000       NR/NR         Lubbock Health Facilities Development Corp.,
                                   6.5%, 7/1/26                                              873,291
     2,000,000       NR/NR         Lubbock Health Facilities Development Corp.,
                                   6.625%, 7/1/36                                          2,064,000
     7,750,000       BBB-/Ba1      Matagorda County Navigation District Number 1
                                   Revenue, 5.95%, 5/1/30                                  7,993,970
     1,885,000(b)    NR/Ca         Panhandle Texas Regional Housing Finance,
                                   8.125%, 3/1/31                                          1,608,056
     5,000,000       NR/Baa3       Tomball Hospital Authority, 6.0%, 7/1/25                5,213,700
     1,500,000       NR/NR         Willacy County Local Government Corp.,
                                   6.0%, 3/1/09                                            1,533,405
                                                                                        ------------
                                                                                        $ 64,974,069
                                                                                        ------------
                                   Virginia - 0.5%
     1,555,000+      AAA/NR        Pocahontas Parkway Association of Virginia Toll
                                   Road Revenue, 5.25%, 8/15/09                         $  1,632,532
                                                                                        ------------
                                   Washington - 6.6%
    10,000,000       AAA/Aaa       Port Seattle Washington Special Facilities
                                   Revenue, 5.0%, 4/1/31                                $ 10,285,000
     5,500,000(b)    NR/NR         Port Seattle Washington Special Facilities
                                   Revenue, 7.25%, 4/1/30                                  3,544,640
     1,390,000       BBB/Baa3      Tobacco Settlement Authority Revenue,
                                   6.5%, 6/1/26                                            1,526,345
     6,960,000(a)    NR/Aaa        Washington State Economic Development Finance
                                   Authority, RIB, 7.278%, 6/1/38 (144A)                   8,151,413
                                                                                        ------------
                                                                                        $ 23,507,398
                                                                                        ------------


  The accompanying notes are an integral part of these financial statements.  19




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
SCHEDULE OF INVESTMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------



                  S&P/
                  Moody's
Principal         Ratings
Amount            (unaudited)                                                                Value
                                                                            
                                Wisconsin - 0.6%
$ 1,000,000       NR/NR         Wisconsin State Health & Educational Facilities
                                Authority Revenue, 6.125%, 4/1/24                    $   1,031,810
  1,000,000       NR/NR         Wisconsin State Health & Educational Facilities
                                Authority Revenue, 6.25%, 4/1/34                         1,027,250
                                                                                     -------------
                                                                                     $   2,059,060
                                                                                     -------------
                                TOTAL TAX-EXEMPT OBLIGATIONS
                                (Cost $442,254,752)                                  $ 491,801,227
                                                                                     -------------
Shares
                                TAX-EXEMPT MONEY MARKET MUTUAL
                                FUND - 0.5% of Net Assets
  1,650,911                     BlackRock Provident Institutional Municipal Fund     $   1,650,911
                                                                                     -------------
                                TOTAL TAX-EXEMPT MONEY MARKET
                                MUTUAL FUND
                                (Cost $1,650,911)                                    $   1,650,911
                                                                                     -------------
                                TOTAL INVESTMENTS IN SECURITIES - 138.8%
                                (Cost $443,905,663)(d)(e)                            $ 493,452,138
                                                                                     -------------
                                OTHER ASSETS AND LIABILITIES - 3.4%                  $  12,034,272
                                                                                     -------------
                                PREFERRED SHARES AT REDEMPTION VALUE,
                                INCLUDING DIVIDENDS PAYABLE - (42.2)%                $(150,079,209)
                                                                                     -------------
                                NET ASSETS APPLICABLE TO COMMON
                                SHAREOWNERS - 100.0%                                 $ 355,407,201
                                                                                     =============


20  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

(144A) Security is exempt from registration under Rule 144A of the Securities
       Act of 1933. Such securities may be resold normally to qualified
       institutional buyers in a transaction exempt from registration. At
       September 30, 2006, the value of these securities amounted to
       $48,602,762, or 13.7% of total net assets applicable to common
       shareowners.

RIB    Residual Interest Bonds.

NR     Security not rated by S&P or Moody's.

+      Prerefunded bonds have been collateralized by U.S. Treasury securities
       which are held in escrow to pay interest and principal on the tax exempt
       issue and to retire the bonds in full at the earliest refunding date.

(a)    The interest rate is subject to change periodically and inversely based
       upon prevailing market rates. The interest rate shown is the rate at
       September 30, 2006.

(b)    Security is in default and is non-income producing.

(c)    Debt obligation initially issued at one coupon which converts to a higher
       coupon at a specific date. The rate shown is the rate at September 30,
       2006.

(d)    The concentration of investments by type of obligation/market sector is
       as follows:


                                                                         
       Insured                                                              14.1%
       General Obligation                                                    1.1
       Revenue Bonds:
         Health Revenue                                                     25.0
         Airport Revenue                                                    16.5
         Tobacco Revenue                                                     9.4
         Development Revenue                                                 9.3
         Transportation Revenue                                              8.1
         Pollution Control Revenue                                           5.7
         Facilities Revenue                                                  5.2
         Education Revenue                                                   2.1
         Water Revenue                                                       1.1
         Housing Revenue                                                     1.1
         Other                                                               0.8
         Power Revenue                                                       0.5
                                                                           -----
                                                                           100.0%
                                                                           =====


(e)    At September 30, 2006, the net unrealized gain on investments based on
       cost for federal income tax purposes of $441,012,357 was as follows:


                                                                  
       Aggregate gross unrealized gain for all investments in
       which there is an excess of value over tax cost               $58,405,826
       Aggregate gross unrealized loss for all investments in
       which there is an excess of tax cost over value                (5,966,045)
                                                                     -----------
       Net unrealized gain                                           $52,439,781
                                                                     ===========


For financial reporting purposes net unrealized gain on investments was
$49,546,475 and cost of investments aggregated $443,905,663.

Purchases and sales of securities (excluding temporary cash investments) for
the six months ended September 30, 2006, aggregated $41,632,313 and
$32,275,912, respectively.


  The accompanying notes are an integral part of these financial statements.  21




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
STATEMENT OF ASSETS AND LIABILITIES 9/30/06 (unaudited)
--------------------------------------------------------------------------------


                                                             
ASSETS:
  Investments in securities, at value (cost $443,905,663)       $493,452,138
  Cash                                                                79,783
  Receivables -
    Investment securities sold                                     1,647,300
    Interest                                                       9,355,473
  Unrealized appreciation on interest rate swaps                   1,412,356
  Prepaid expenses                                                    36,662
                                                                -------------
      Total assets                                              $505,983,712
                                                                -------------
LIABILITIES:
  Payables -
    Investment securities purchased                             $    120,488
  Due to affiliate                                                   250,755
  Administration fee                                                  28,954
  Accrued expenses                                                    97,105
                                                                -------------
      Total liabilities                                         $    497,302
                                                                -------------
PREFERRED SHARES AT REDEMPTION VALUE:
  $25,000 liquidation value per share applicable to 6,000
    shares, including dividends payable of $79,209              $150,079,209
                                                                -------------
NET ASSETS APPLICABLE TO COMMON SHAREOWNERS:
  Paid-in capital                                               $323,671,003
  Undistributed net investment income                              1,512,594
  Accumulated net realized loss on investments and interest
    rate swaps                                                   (20,735,227)
  Net unrealized gain on investments                              49,546,475
  Net unrealized gain on interest rate swaps                       1,412,356
                                                                -------------
      Net assets applicable to common shareowners               $355,407,201
                                                                =============
NET ASSET VALUE PER SHARE:
No par value, (unlimited number of shares authorized)
Based on $355,407,201/22,740,627 common shares                  $      15.63
                                                                =============




22     The accompanying notes are an integral part of these financial
statements.


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
STATEMENT OF OPERATIONS (unaudited)
--------------------------------------------------------------------------------
For the Six Months Ended 9/30/06



                                                                      
INVESTMENT INCOME:
  Interest                                                                  $15,241,341
                                                                            -----------
EXPENSES:
  Management fees                                        $ 1,490,449
  Administration fees and reimbursement                      236,072
  Transfer agent fees and expenses                            22,273
  Auction agent fees                                         195,859
  Custodian fees                                              11,673
  Registration fees                                           12,079
  Professional fees                                           36,163
  Printing expense                                             9,415
  Trustees' fees                                               6,360
  Pricing fees                                                 9,776
  Insurance fees                                               7,715
  Miscellaneous                                                7,181
                                                         -----------
    Total expenses                                                          $ 2,045,015
    Less management fees waived and expenses
      reimbursed by Pioneer Investment Management, Inc.                         (45,275)
                                                                            -----------
    Net expenses                                                            $ 1,999,740
                                                                            -----------
      Net investment income                                                 $13,241,601
                                                                            -----------
REALIZED AND UNREALIZED GAIN (LOSS) ON
INVESTMENTS AND INTEREST RATE SWAPS:
  Net realized gain (loss) from:
    Investments                                          $(2,005,947)
    Interest rate swaps                                      318,246        $(1,687,701)
                                                         -----------        -----------
  Change in net unrealized gain from:
    Investments                                          $15,045,602
    Interest rate swaps                                     (625,004)       $14,420,598
                                                         -----------        -----------
      Net gain on investments and interest rate swaps                       $12,732,897
                                                                            -----------
DISTRIBUTIONS TO PREFERRED SHAREOWNERS FROM
NET INVESTMENT INCOME                                                       $(2,573,203)
                                                                            -----------
  Net increase in net assets applicable to common
    shareowners resulting from operations                                   $23,401,295
                                                                            ===========



  The accompanying notes are an integral part of these financial statements.  23




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
STATEMENTS OF CHANGES IN NET ASSETS
--------------------------------------------------------------------------------
For the Six Months Ended 9/30/06 and the Year Ended from 3/31/06




                                                       Six Months
                                                         Ended             Year
                                                        9/30/06            Ended
                                                      (unaudited)         3/31/06
                                                                
FROM OPERATIONS:
  Net investment income                              $  13,241,601    $  26,621,808
  Net realized loss on investments and interest
    rate swaps                                          (1,687,701)     (13,577,265)
  Change in net unrealized gain on investments
    and interest rate swaps                             14,420,598       22,405,597
  Distributions to preferred shareowners from net
    investment income                                   (2,573,203)      (3,961,976)
                                                     -------------    -------------
    Net increase in net assets applicable to
      common shareowners                             $  23,401,295    $  31,488,164
                                                     -------------    -------------
DISTRIBUTIONS TO COMMON SHAREOWNERS FROM:
  Net investment income ($0.44 and $0.99 per
    share, respectively)                             $ (10,005,875)   $ (22,481,571)
                                                     -------------    -------------
    Total distributions to common shareowners        $ (10,005,875)   $ (22,481,571)
                                                     -------------    -------------
FROM TRUST SHARE TRANSACTIONS:
  Reinvestment of distributions                      $           -    $     630,886
                                                     -------------    -------------
    Net increase in net assets applicable to
      common shareowners resulting from Trust
      share transactions                             $           -    $     630,886
                                                     -------------    -------------
    Net increase in net assets applicable to
      common shareowners                             $  13,395,420    $   9,637,479
NET ASSETS APPLICABLE TO COMMON
SHAREOWNERS:
  Beginning of period                                  342,011,781      332,374,302
                                                     -------------    -------------
  End of period                                      $ 355,407,201    $ 342,011,781
                                                     =============    =============
  Undistributed net investment income                $   1,512,594    $     850,071
                                                     -------------    -------------



24  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
--------------------------------------------------------------------------------



                                                   Six Months
                                                      Ended              Year           Year         10/20/03 (b)
                                                     9/30/06             Ended          Ended             to
                                                   (unaudited)          3/31/06        3/31/05          3/31/04
                                                                                           
Per Common Share Operating Performance
Net asset value, beginning of period                $  15.04           $  14.64       $  14.51        $  14.33(c)
                                                    --------           --------       --------        --------
Increase (decrease) from investment
  operations:(a)
  Net investment income                             $   0.58           $   1.17       $   1.26        $   0.46
  Net realized and unrealized gain on
    investments and interest rate swaps                 0.56               0.39           0.18            0.23
  Dividends and distributions to preferred
    shareowners from:
    Net investment income                              (0.11)             (0.17)         (0.09)          (0.02)
    Net realized gains                                     -                  -          (0.01)              -
                                                    --------           --------       --------        --------
  Net increase from investment operations           $   1.03           $   1.39       $   1.34        $   0.67
Dividends and distributions to common
  shareowners from:
  Net investment income                                (0.44)             (0.99)         (1.13)          (0.38)
  Net realized gains                                       -                  -          (0.09)              -
Capital charge with respect to issuance of:
  Common shares                                            -                  -           0.01           (0.03)
  Preferred shares                                         -                  -              -           (0.08)
                                                    --------           --------       --------        --------
Net increase in net asset value                     $   0.59           $   0.40       $   0.13        $   0.18
                                                    --------           --------       --------        --------
Net asset value, end of period(d)                   $  15.63           $  15.04       $  14.64        $  14.51
                                                    ========           ========       ========        ========
Market value, end of period(d)                      $  14.99           $  14.99       $  14.37        $  15.05
                                                    --------           --------       --------        --------
Total return(e)                                         3.02%             11.55%          4.07%           2.93%
Ratios to average net assets of common
  shareowners
  Net expenses(f)                                       1.15%(g)           1.16%          1.18%           1.01%(g)
  Net investment income before preferred
    share dividends                                     7.65%(g)           7.88%          8.94%           6.98%(g)
  Preferred share dividends                             1.49%(g)           1.17%          0.64%           0.26%(g)
  Net investment income available to
    common shareowners                                  6.16%(g)           6.71%          8.30%           6.72%(g)
Portfolio turnover                                         7%                19%            39%             62%
Net assets of common shareowners, end of
  period (in thousands)                             $355,407           $342,012       $332,374        $327,492
Preferred shares outstanding (in thousands)         $150,000           $150,000       $150,000        $150,000
Asset coverage per preferred share, end
  of period                                         $ 84,248           $ 82,011       $ 80,396        $ 79,582
Average market value per preferred share            $ 25,000           $ 25,000       $ 25,000        $ 25,000
Liquidation value, including dividends
  payable, per preferred share                      $ 25,013           $ 25,009       $ 25,000        $ 25,000
Ratios to average net assets of common
  shareowners before waivers and
  reimbursement of expenses
  Net expenses(f)                                       1.18%(g)           1.16%          1.19%           1.04%(g)
  Net investment income before preferred
    share dividends                                     7.62%(g)           7.88%          8.93%           6.95%(g)
  Preferred share dividends                             1.49%(g)           1.17%          0.64%           0.26%(g)
  Net investment income available to
    common shareowners                                  6.13%(g)           6.71%          8.29%           6.69%(g)



  The accompanying notes are an integral part of these financial statements.  25




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS (continued)
--------------------------------------------------------------------------------

(a) The per share data presented above is based upon the average common shares
    outstanding for the periods presented.
(b) Trust shares were first publicly offered on October 15, 2003.
(c) Net asset value immediately after the closing of the first public offering
    was $14.30.
(d) Net asset value and market value are published in Barron's on Saturday, The
    Wall Street Journal on Monday and The New York Times on Monday and Saturday.
(e) Total investment return is calculated assuming a purchase of common shares
    at the current market value on the first day and a sale at the current
    market value on the last day of the periods reported. Dividends and
    distributions, if any, are assumed for purposes of this calculation to be
    reinvested at prices obtained under the Trust's dividend reinvestment plan.
    Total investment return does not reflect brokerage commissions. Total
    investment return less than a full period is not annualized. Past
    performance is not a guarantee of future results.
(f) Ratios do not reflect the effect of dividend payments to preferred
    shareowners.
(g) Annualized.
The information above represents the operating performance data for a share of
common stock outstanding, total investment return, ratios to average net assets
of common shareowners and other supplemental data for the periods indicated.
This information has been determined based upon financial information provided
in the financial statements and market value data for the Trust's common shares.



26  The accompanying notes are an integral part of these financial statements.




Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06 (unaudited)
--------------------------------------------------------------------------------

1. Organization and Significant Accounting Policies

Pioneer Municipal High Income Advantage Trust (the "Trust") was organized as a
Delaware statutory trust on August 6, 2003. Prior to commencing operations on
October 20, 2003, the Trust had no operations other than matters relating to
its organization and registration as a diversified, closed-end management
investment company under the Investment Company Act of 1940, as amended.

The Trust may invest in municipal securities with a broad range of maturities
and credit ratings, including both investment grade and below investment grade
municipal securities.

The Trust invests in below investment grade (high-yield) municipal securities.
Debt securities rated below investment grade are commonly referred to as "junk
bonds" and are considered speculative. These securities involve greater risk of
loss, are subject to greater price volatility, and are less liquid, especially
during periods of economic uncertainty or change, than higher rated debt
securities.

The Trust's financial statements have been prepared in conformity with U.S.
generally accepted accounting principles that require the management of the
Trust to, among other things, make estimates and assumptions that affect the
reported amounts of assets and liabilities, and the reported amounts of income,
expenses and gains and losses on investments during the reporting period.
Actual results could differ from those estimates.

The following is a summary of significant accounting policies followed by the
Trust in the preparation of its financial statements, which are consistent with
those policies generally accepted in the investment company industry:

A.  Security Valuation

    Security transactions are recorded as of trade date. Securities are valued
    at prices supplied by independent pricing services, which consider such
    factors as Treasury spreads, yields, maturities and ratings. Valuations
    may be supplemented by dealers and other sources, as required. The values
    of interest rate swaps are determined by obtaining dealer quotations.
    Securities for which market quotations are not readily available are
    valued at their fair values as determined by, or under the direction of,
    the Board of Trustees.


                                                                              27


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------

    At September 30, 2006, there were no securities fair valued. Temporary
    cash investments are valued at amortized cost.

    Discount and premium on debt securities are accreted or amortized,
    respectively, daily on an effective yield to maturity basis and are
    included in interest income. Interest income, including interest bearing
    cash accounts, is recorded on an accrual basis.

    Gains and losses on sales of investments are calculated on the identified
    cost method for both financial reporting and federal income tax purposes.

    Information regarding the Trust's principal risks is contained in the
    Trust's original offering prospectus, with additional information included
    in the Trust's Shareowner reports from time to time. Please refer to those
    documents when considering the Trust's risks. At times, the Trust's
    investments may represent industries or industry sectors that are
    interrelated or have common risks, making it more susceptible to any
    economic, political, or regulatory developments or other risks affecting
    those industries and sectors.

B.  Federal Income Taxes

    It is the Trust's policy to comply with the requirements of the Internal
    Revenue Code applicable to regulated investment companies and to
    distribute all of its taxable income and net realized capital gains, if
    any, to its shareowners. Therefore, no federal income tax provision is
    required.

    The amounts and characterizations of distributions to shareowners for
    financial reporting purposes are determined in accordance with federal
    income tax rules. Therefore, the source of the Trust's distributions may
    be shown in the accompanying financial statements as either from or in
    excess of net investment income or net realized gain on investments
    transactions, or from paid-in capital, depending on the type of book/tax
    differences that may exist.

    At March 31, 2006, the Trust had a capital loss carryforward of
    $15,917,330, which is comprised of $360,350, which will expire in 2013 and
    $15,556,980, which will expire in 2014, if not utilized.


28


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

    The tax character of distribution paid to common and preferred shareowners
    will be determined at the end of the fiscal year. Distributions during the
    year ended March 31, 2006 were as follows:



--------------------------------------------------------------------------------
                                                                      2006
--------------------------------------------------------------------------------
                                                                
Distributions paid from:
Tax exempt income                                                  $26,443,547
                                                                   -----------
   Total                                                           $26,443,547
                                                                   ===========
--------------------------------------------------------------------------------



    The following shows components of distributable earnings on a federal
    income tax basis at March 31, 2006.



--------------------------------------------------------------------------------
                                                                       2006
--------------------------------------------------------------------------------
                                                                
Undistributed tax-exempt income                                    $   626,796
Undistributed ordinary income                                          224,795
Capital loss carry forward                                         (15,917,330)
Dividend payable                                                    (1,874,116)
Unrealized appreciation                                             38,410,829
Post October loss deferred                                          (3,130,196)
                                                                   -----------
  Total                                                            $18,340,778
                                                                   ===========
--------------------------------------------------------------------------------


    The difference between book basis and tax basis unrealized appreciation is
    primarily attributable to the difference between book and tax amortization
    methods for premiums and discounts on fixed income securities and accrual
    of income on defaulted bond interest.

C.  Automatic Dividend Reinvestment Plan

    All common shareowners automatically participate in the Automatic Dividend
    Reinvestment Plan (the "Plan"), under which participants receive all
    dividends and capital gain distributions (collectively, "dividends") in
    full and fractional common shares of the Trust in lieu of cash.
    Shareowners may elect not to participate in the Plan. Shareowners not
    participating in the Plan receive all dividends and capital gain
    distributions in cash. Participation in the Plan is completely voluntary
    and may be terminated or resumed at any time without penalty by notifying
    American Stock Transfer & Trust Company, the agent for shareowners in
    administering the Plan (the


                                                                              29


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------

    "Plan Agent"), in writing prior to any dividend record date; otherwise
    such termination or resumption will be effective with respect to any
    subsequently declared dividend or other distribution. Whenever the Trust
    declares a dividend on common shares payable in cash, participants in the
    Plan will receive the equivalent in common shares acquired by the Plan
    Agent either (i) through receipt of additional unissued but authorized
    common shares from the Trust or (ii) by purchase of outstanding common
    shares on the New York Stock Exchange or elsewhere. If, on the payment
    date for any dividend, the net asset value per common share is equal to or
    less than the market price per share plus estimated brokerage trading fees
    ("market premium"), the Plan Agent will invest the dividend amount in
    newly issued common shares. The number of newly issued common shares to be
    credited to each account will be determined by dividing the dollar amount
    of the dividend by the net asset value per common share on the date the
    shares are issued, provided that the maximum discount from the then
    current market price per share on the date of issuance does not exceed 5%.
    If, on the payment date for any dividend, the net asset value per common
    share is greater than the market value ("market discount"), the Plan Agent
    will invest the dividend amount in common shares acquired in open-market
    purchases. There are no brokerage charges with respect to newly issued
    common shares. However, each participant will pay a pro rata share of
    brokerage trading fees incurred with respect to the Plan Agent's
    open-market purchases. Participating in the Plan does not relieve
    shareowners from any federal, state or local taxes which may be due on
    dividends paid in any taxable year. Shareowners holding Plan shares in a
    brokerage account may not be able to transfer the shares to another broker
    and continue to participate in the Plan.


2.  Management Agreement

Pioneer Investment Management, Inc. ("PIM"), a wholly owned indirect subsidiary
of Unicredito Italiano S.p.A. ("Unicredito Italiano"), manages the Trust's
portfolio. Management fees are calculated daily at the annual rate of 0.60% of
the Trust's average daily managed assets. "Managed assets" is the average daily
value of the Trust's total assets minus the sum of the Trust's liabilities,
which liabilities exclude debt related to leverage, short-term debt and the
aggregate liquidation preference of any outstanding preferred shares. At


30


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

September 30, 2006, $243,516 was payable to PIM related to management fees.

In addition, under PIM's management and administration agreements, certain
other services and costs are paid by PIM and reimbursed by the Trust. For the
six months ended September 30, 2006, the Trust recorded $62,186 in
reimbursement and is included in "Administration fees and reimbursement" on the
Statement of Operations.

The Trust has retained Princeton Administrators, LLC ("Princeton") to provide
certain administrative services to the Trust on its behalf. The Trust pays
Princeton a monthly fee at an annual rate of 0.07% of the average daily value
of the Trust's managed assets, subject to a minimum monthly fee of $10,000.

Also, PIM has agreed for the first three years of the Trust's investment
operations to limit the Trust's total annual expenses (excluding offering costs
for common and preferred shares, interest expense, the cost of defending or
prosecuting any claim or litigation to which the Trust is a party (together
with any amount in judgment or settlement), indemnification expense or taxes
incurred due to the failure of the Trust to qualify as a regulated investment
company under the Code or any other non-recurring or non-operating expenses) to
0.80% of the Trusts average daily managed assets. The dividend on any preferred
shares is not an expense for this purpose. For the six months ended September
30, 2006, the expense reduction under such arrangements was $45,275.

3.  Transfer Agents

Pioneer Investment Management Shareholder Services, Inc. ("PIMSS"), a wholly
owned indirect subsidiary of UniCredito Italiano, through a sub-transfer agency
agreement with American Stock Transfer & Trust Company provides substantially
all transfer agent and shareowner services related to the Trust's common shares
at negotiated rates. Deutsche Bank Trust Company Americas is the transfer
agent, registrar, dividend paying agent and redemption agent with respect to
the Trust's Auction Preferred Shares ("APS"). The Trust pays Deutsche Bank
Trust Company Americas an annual fee, as is agreed to from time to time by the
Trust and Deutsche Bank Trust Company Americas, for providing such services.


                                                                              31


Pioneer Municipal High Income Advantage Trust
--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06  (unaudited) (continued)

4.  Interest Rate Swaps

The Trust may enter into interest rate swap transactions to attempt to protect
itself from increasing dividend or interest expense on its leverage resulting
from increasing short-term interest rates. The cost of leverage may rise with
an increase in interest rates, generally having the effect of lower yields and
potentially lower dividends to common shareowners. Interest rate swaps can be
used to "lock in" the cost of leverage and reduce the negative impact that
rising short-term interest rates would have on the Trust's leveraging costs.

An interest rate swap is an agreement between two parties, which involves
exchanging a floating rate and fixed rate interest payments for a specified
period of time. Interest rate swaps involve the accrual of the net interest
payments between the parties on a daily basis, with the net amount recorded
within the unrealized appreciation/depreciation of interest rate swaps on the
Statement of Assets and Liabilities. Once the interim payments are settled in
cash, at the pre-determined dates specified in the agreement, the net amount is
recorded as realized gain or loss from interest rate swaps on the Statement of
Operations. During the term of the swap, changes in the value of the swap are
recognized as unrealized gains and losses by "marking-to market" the market
value of the swap based on values obtained from dealer quotations. When the swap
is terminated, the Trust will record a realized gain or loss equal to the
difference, if any, between the proceeds from (or cost of) closing the contract
and the cost basis of the contract. The Trust is exposed to credit risk in the
event of non-performance by the other party to the interest rate swap. However,
at September 30, 2006 the Trust does not anticipate non-performance by any
counterparty. Risk may also arise with regard to market movements in the value
of the swap arrangement that do not exactly offset the changes in the related
dividend requirement or interest expense on the Trust's leverage.

Under the terms of the agreement entered into by the Trust, the Trust receives
a floating rate of interest and pays a fixed rate of interest for the term.
Details of the swap agreement outstanding as of September 30, 2006 were as
follows:



--------------------------------------------------------------------------------------
                 Termination       Notional       Fixed      Floating      Unrealized
Counterparty         Date        Amount (000)     Rate         Rate       Appreciation
--------------------------------------------------------------------------------------
                                                            
 UBS AG         April 5, 2009      $75,000        2.665%    1 month BMA    $1,412,356
--------------------------------------------------------------------------------------



32


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

5.  Trust Shares

There are an unlimited number of common shares of beneficial interest
authorized. Of the 22,740,627 common shares of beneficial interest outstanding
at September 30, 2006, PIM owned 6,981 shares.

Transactions in common shares of beneficial interest for the six months ended
September 30, 2006 and the year ended March 31, 2006 were as follows:



--------------------------------------------------------------------------------
                                                       9/2006          3/2006
--------------------------------------------------------------------------------
                                                              
  Shares outstanding at
    beginning of period                              22,740,627     22,698,047
  Reinvestment of distributions                               -         42,580
                                                     ----------     ----------
      Shares outstanding at
        end of period                                22,740,627     22,740,627
                                                     ==========     ==========
--------------------------------------------------------------------------------


The Trust may classify or reclassify any unissued common shares of beneficial
interest into one or more series of preferred shares of beneficial interest. As
of September 30, 2006, there were 6,000 APS as follows: Series A-3,000 and
Series B-3,000.

Dividends on Series A and Series B are cumulative at a rate, which is reset
every seven days based on the results of an auction. Dividend rates ranged from
2.99% to 4.05% during the six months ended September 30, 2006.

The Trust may not declare dividends or make other distributions on its common
shares or purchase any such shares if, at the time of the declaration,
distribution or purchase, asset coverage with respect to the outstanding
preferred shares would be less than 200%.

The APS are redeemable at the option of the Trust, in whole or in part, on any
dividend payment date at $25,000 per share plus any accumulated or unpaid
dividends, whether or not declared. The APS are also subject to mandatory
redemption at $25,000 per share plus any accumulated or unpaid dividends,
whether or not declared, if certain requirements relating to the composition of
the assets and liabilities of the Trust as set forth in the Agreement and
Declaration of Trust are not satisfied.


                                                                              33


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------

The holders of APS have voting rights equal to the holders of the Trust's
common shares (one vote per share) and will vote together with holders of the
common shares as a single class. However, holders of APS are also entitled to
elect two of the Trust's Trustees. In addition, the Investment Company Act of
1940, as amended, requires that along with approval by shareowners that might
otherwise be required, the approval of the holders of a majority of any
outstanding preferred shares, voting separately as a class would be required to
(a) adopt any plan of reorganization that would adversely affect the preferred
shares and (b) take any action requiring a vote of security holders, including,
among other things, changes in the Trust's subclassification as a closed-end
management investment company or changes in its fundamental investment
restrictions.

6.  New Pronouncements

On July 13, 2006, the Financial Accounting Standards Board ("FASB") released
FASB Interpretation No. 48 "Accounting for Uncertainty in Income Taxes" ("FIN
48"). FIN 48 provides guidance for how uncertain tax positions should be
recognized, measured, presented and disclosed in the financial statements. FIN
48 requires the evaluation of tax positions taken or expected to be taken in
the course of preparing the Trust's tax returns to determine whether the tax
positions will "more-likely-than-not" be sustained by the applicable tax
authority. Tax positions not deemed to meet the more-likely-than-not threshold
would be recorded as a tax benefit or expense in the reporting period. Adoption
of FIN 48 is required for fiscal years beginning after December 15, 2006 and is
to be applied to all open tax years as of the effective date. At this time,
management is evaluating the implications of FIN 48 and any impact in the
financial statements has not yet been determined.

In addition, in September 2006, Statement of Financial Accounting Standards No.
157, Fair Value Measurements ("SFAS 157"), was issued and is effective for
fiscal years beginning after November 15, 2007. SFAS 157 defines fair value,
establishes a framework for measuring fair value and expands disclosures about
fair value measurements. Management is currently evaluating the impact the
adoption of SFAS 157 will have on the Trust's financial statement disclosures.


34


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

7.  Subsequent Events

Subsequent to September 30, 2006, the Board of Trustees of the Trust declared a
dividend from undistributed net investment income of $0.07 per common share
payable October 31, 2006, to shareowners of record on October 17, 2006.

For the period October 1, 2006 to October 31, 2006, dividends declared on
preferred shares totaled $448,650 in aggregate for the two outstanding
preferred share series.


                                                                              35


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS 9/30/06  (unaudited) (continued)
--------------------------------------------------------------------------------

ADDITIONAL INFORMATION (unaudited)

During the period, there have been no material changes in the Trust's
investment objective or fundamental policies that have not been approved by the
shareowners. There have been no changes in the Trust's charter or By-Laws that
would delay or prevent a change in control of the Trust which have not been
approved by the shareowners. There have been no changes in the principal risk
factors associated with investment in the Trust. There have been no changes in
the persons who are primarily responsible for the day-to-day management of the
Trust's portfolio.

Notice is hereby given in accordance with Section 23(c) of the Investment
Company Act of 1940 that the Trust may purchase, from time to time, its common
shares in the open market.


36


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
RESULTS OF SHAREHOLDER MEETING (unaudited)
--------------------------------------------------------------------------------

On September 21, 2006, Pioneer Municipal High Income Advantage Trust held its
annual meeting of shareowners to elect Class III trustees. All Class III
Trustees were elected. Here are the detailed results of the votes.

Proposal 1 - To elect Class III Trustees.



--------------------------------------------------------------------------------
Nominee                                               Affirmative     Withheld
--------------------------------------------------------------------------------
                                                                 
Mary K. Bush                                           21,679,438      352,341
Thomas J. Perna                                        21,693,730      338,049
Marguerite A. Piret+                                        5,269           37
--------------------------------------------------------------------------------


+ Elected by Preferred Shares only


                                                                              37


Pioneer Municipal High Income Advantage Trust

--------------------------------------------------------------------------------
TRUSTEES, OFFICERS AND SERVICE PROVIDERS
--------------------------------------------------------------------------------

Trustees                                       Officers
John F. Cogan, Jr., Chairman                   John F. Cogan, Jr., President
David R. Bock                                  Osbert M. Hood, Executive
Mary K. Bush                                     Vice President
Margaret B.W. Graham                           Vincent Nave, Treasurer
Osbert M. Hood                                 Dorothy E. Bourassa, Secretary
Thomas J. Perna
Marguerite A. Piret
Stephen K. West
John Winthrop

Investment Adviser
Pioneer Investment Management, Inc.


Custodian
Brown Brothers Harriman & Co.


Independent Registered Public Accounting Firm
Ernst & Young LLP


Legal Counsel
Wilmer Cutler Pickering Hale and Dorr LLP


Transfer Agent
Pioneer Investment Management Shareholder Services, Inc.


Shareowner Services and Sub-Transfer Agent
American Stock Transfer & Trust Company


Preferred Share Auction/Transfer Agent and Registrar
Deutsche Bank Trust Company Americas


Sub-Administrator
Princeton Administrators, LLC

Proxy Voting Policies and Procedures of the Trust are available without charge,
upon request, by calling our toll free number (1-800-225-6292). Information
regarding how the Trust voted proxies relating to portfolio securities during
the most recent 12 months ended June 30, is publicly available to shareowners
at www.pioneerinvestments.com. This information is also available on the
Securities and Exchange Commission's web site at http://www.sec.gov.


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HOW TO CONTACT PIONEER
--------------------------------------------------------------------------------

We are pleased to offer a variety of convenient ways for you to contact us for
assistance or information.

You can call American Stock Transfer & Trust Company (AST) for:

Account Information                                               1-800-710-0935

Or write to AST:


For                                                      Write to
                                                      
 General inquiries, lost dividend checks,                American Stock
 change of address, lost stock certifi-                  Transfer & Trust
 cates, stock transfer                                   Operations Center
                                                         6201 15th Ave.
                                                         Brooklyn, NY 11219
 Dividend reinvestment plan (DRIP)                       American Stock
                                                         Transfer & Trust
                                                         Wall Street Station
                                                         P.O. Box 922
                                                         New York, NY 10269-0560

Website                                                          www.amstock.com

For additional information, please contact your investment advisor or visit our
web site www.pioneerinvestments.com.

The Trust files a complete statement of investments with the Securities and
Exchange Commission for the first and third quarters for each fiscal year on
Form N-Q. Shareowners may view the filed Form N-Q by visiting the Commission's
web site at http://www.sec.gov. The filed form may also be viewed and copied at
the Commission's Public Reference Room in Washington, DC. Information regarding
the operations of the Public Reference Room may be obtained by calling
1-800-SEC-0330.

The Trust's Chief Executive Officer is required by the New York Stock Exchange's
Listing Standards to file annually with the Exchange a certification that he is
not aware of any violation by the Trust of the Exchange's Corporate Governance
Standards applicable to the Trust. The Trust has filed such certification.


ITEM 2. CODE OF ETHICS.

(a) Disclose whether, as of the end of the period covered by the report, the
registrant has adopted a code of ethics that applies to the registrant's
principal executive officer, principal financial officer, principal accounting
officer or controller, or persons performing similar functions, regardless of
whether these individuals are employed by the registrant or a third party.  If
the registrant has not adopted such a code of ethics, explain why it has not
done so.

The registrant has adopted, as of the end of the period covered by this report,
a code of ethics that applies to the registrant's principal executive officer,
principal financial officer, principal accounting officer and controller.

(b) For purposes of this Item, the term "code of ethics" means written standards
that are reasonably designed to deter wrongdoing and to promote:

        (1) Honest and ethical conduct, including the ethical handling of actual
        or apparent conflicts of interest between personal and professional
        relationships;

        (2) Full, fair, accurate, timely, and understandable disclosure in
        reports and documents that a registrant files with, or submits to, the
        Commission and in other public communications made by the registrant;

        (3) Compliance with applicable governmental laws, rules, and
        regulations;

        (4) The prompt internal reporting of violations of the code to an
        appropriate person or persons identified in the code; and

        (5) Accountability for adherence to the code.

(c) The registrant must briefly describe the nature of any amendment, during the
period covered by the report, to a provision of its code of ethics that applies
to the registrant's principal executive officer, principal financial officer,
principal accounting officer or controller, or persons performing similar
functions, regardless of whether these individuals are employed by the
registrant or a third party, and that relates to any element of the code of
ethics definition enumerated in paragraph (b) of this Item. The registrant must
file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless
the registrant has elected to satisfy paragraph (f) of this Item by posting its
code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by
undertaking to provide its code of ethics to any person without charge, upon
request, pursuant to paragraph (f)(3) of this Item.

The registrant has made no amendments to the code of ethics during the period
covered by this report.

(d) If the registrant has, during the period covered by the report, granted a
waiver, including an implicit waiver, from a provision of the code of ethics to
the registrant's principal executive officer, principal financial officer,
principal accounting officer or controller, or persons performing similar
functions, regardless of whether these individuals are employed by the
registrant or a third party, that relates to one or more of the items set forth
in paragraph (b) of this Item, the registrant must briefly describe the nature
of the waiver, the name of the person to whom the waiver was granted, and the
date of the waiver.

Not applicable.

(e) If the registrant intends to satisfy the disclosure requirement under
paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from,
a provision of its code of ethics that applies to the registrant's principal
executive officer, principal financial officer, principal accounting officer or
controller, or persons performing similar functions and that relates to any
element of the code of ethics definition enumerated in paragraph (b) of this
Item by posting such information on its Internet website, disclose the
registrant's Internet address and such intention.

Not applicable.

(f) The registrant must:

        (1) File with the Commission, pursuant to Item 10(a), a copy of its code
        of ethics that applies to the registrant's principal executive officer,
        principal financial officer, principal accounting officer or controller,
        or persons performing similar functions, as an exhibit to its annual
        report on this Form N-CSR;

        (2) Post the text of such code of ethics on its Internet website and
        disclose, in its most recent report on this Form N-CSR, its Internet
        address and the fact that it has posted such code of ethics on its
        Internet website; or

        (3) Undertake in its most recent report on this Form N-CSR to provide to
        any person without charge, upon request, a copy of such code of ethics
        and explain the manner in which such request may be made.
	See Item 10(2)

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

(a) (1)  Disclose that the registrant's board of trustees has determined that
         the registrant either:

    (i)  Has at least one audit committee financial expert serving on its audit
         committee; or

    (ii) Does not have an audit committee financial expert serving on its audit
         committee.

The registrant's Board of Trustees has determined that the registrant has at
least one audit committee financial expert.

    (2) If the registrant provides the disclosure required by paragraph
(a)(1)(i) of this Item, it must disclose the name of the audit committee
financial expert and whether that person is "independent." In order to be
considered "independent" for purposes of this Item, a member of an audit
committee may not, other than in his or her capacity as a member of the audit
committee, the board of trustees, or any other board committee:

    (i)  Accept directly or indirectly any consulting, advisory, or other
         compensatory fee from the issuer; or

    (ii) Be an "interested person" of the investment company as defined in
         Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)).

Ms. Marguerite A. Piret, an independent trustee, is such an audit committee
financial expert.

    (3) If the registrant provides the disclosure required by paragraph (a)(1)
(ii) of this Item, it must explain why it does not have an audit committee
financial expert.

Not applicable.


ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

(a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each
of the last two fiscal years for professional services rendered by the principal
accountant for the audit of the registrant's annual financial statements or
services that are normally provided by the accountant in connection with
statutory and regulatory filings or engagements for those fiscal years.

N/A

(b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in
each of the last two fiscal years for assurance and related services by the
principal accountant that are reasonably related to the performance of the audit
of the registrant's financial statements and are not reported under
paragraph (a) of this Item. Registrants shall describe the nature of the
services comprising the fees disclosed under this category.

N/A

(c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of
the last two fiscal years for professional services rendered by the principal
accountant for tax compliance, tax advice, and tax planning. Registrants shall
describe the nature of the services comprising the fees disclosed under this
category.

N/A

(d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in
each of the last two fiscal years for products and services provided by the
principal accountant, other than the services reported in paragraphs (a) through
(c) of this Item. Registrants shall describe the nature of the services
comprising the fees disclosed under this category.

N/A

(e) (1) Disclose the audit committee's pre-approval policies and procedures
described in paragraph (c)(7) of Rule 2-01 of Regulation S-X.

 PIONEER FUNDS
            APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES
                       PROVIDED BY THE INDEPENDENT AUDITOR

                  SECTION I - POLICY PURPOSE AND APPLICABILITY

The Pioneer Funds recognize the importance of maintaining the independence of
their outside auditors. Maintaining independence is a shared responsibility
involving Pioneer Investment Management, Inc ("PIM"), the audit committee and
the independent auditors.

The Funds recognize that a Fund's independent auditors: 1) possess knowledge of
the Funds, 2) are able to incorporate certain services into the scope of the
audit, thereby avoiding redundant work, cost and disruption of Fund personnel
and processes, and 3) have expertise that has value to the Funds. As a result,
there are situations where it is desirable to use the Fund's independent
auditors for services in addition to the annual audit and where the potential
for conflicts of interests are minimal. Consequently, this policy, which is
intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and
procedures to be followed by the Funds when retaining the independent audit firm
to perform audit, audit-related tax and other services under those
circumstances, while also maintaining independence.

Approval of a service in accordance with this policy for a Fund shall also
constitute approval for any other Fund whose pre-approval is required pursuant
to Rule 210.2-01(c)(7)(ii).

In addition to the procedures set forth in this policy, any non-audit services
that may be provided consistently with Rule 210.2-01 may be approved by the
Audit Committee itself and any pre-approval that may be waived in accordance
with Rule 210.2-01(c)(7)(i)(C) is hereby waived.

Selection of a Fund's independent auditors and their compensation shall be
determined by the Audit Committee and shall not be subject to this policy.



                               SECTION II - POLICY

---------------- -------------------------------- -------------------------------------------------
SERVICE           SERVICE CATEGORY DESCRIPTION      SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
CATEGORY
---------------- -------------------------------- -------------------------------------------------
                                            
I.  AUDIT        Services that are directly       o Accounting research assistance
SERVICES         related to performing the        o SEC consultation, registration
                 independent audit of the Funds     statements, and reporting
                                                  o Tax accrual related matters
                                                  o Implementation of new accounting
                                                    standards
                                                  o Compliance letters (e.g. rating agency
                                                    letters)
                                                  o Regulatory reviews and assistance
                                                    regarding financial matters
                                                  o Semi-annual reviews (if requested)
                                                  o Comfort letters for closed end
                                                    offerings
---------------- -------------------------------- -------------------------------------------------
II.              Services which are not           o AICPA attest and agreed-upon procedures
AUDIT-RELATED    prohibited under Rule            o Technology control assessments
SERVICES         210.2-01(C)(4) (the "Rule")      o Financial reporting control assessments
                 and are related extensions of    o Enterprise security architecture
                 the audit services support the     assessment
                 audit, or use the
                 knowledge/expertise gained
                 from the audit procedures as a
                 foundation to complete the
                 project.  In most cases, if
                 the Audit-Related Services are
                 not performed by the Audit
                 firm, the scope of the Audit
                 Services would likely
                 increase.  The Services are
                 typically well-defined and
                 governed by accounting
                 professional standards (AICPA,
                 SEC, etc.)
---------------- -------------------------------- -------------------------------------------------

 ------------------------------------- ------------------------------------
                                    
   AUDIT COMMITTEE APPROVAL POLICY               AUDIT COMMITTEE
                                                REPORTING POLICY
 ------------------------------------- ------------------------------------
                                    
 o "One-time" pre-approval             o A summary of all such
   for the audit period for all          services and related fees
   pre-approved specific service         reported at each regularly
   subcategories.  Approval of the       scheduled Audit Committee
   independent auditors as               meeting.
   auditors for a Fund shall
   constitute pre approval for
   these services.
 ------------------------------------- ------------------------------------
 o "One-time" pre-approval             o A summary of all such
   for the fund fiscal year within       services and related fees
   a specified dollar limit              (including comparison to
   for all pre-approved                  specified dollar limits)
   specific service subcategories        reported quarterly.

 o Specific approval is
   needed to exceed the
   pre-approved dollar limit for
   these services (see general
   Audit Committee approval policy
   below for details on obtaining
   specific approvals)

 o Specific approval is
   needed to use the Fund's
   auditors for Audit-Related
   Services not denoted as
   "pre-approved", or
   to add a specific service
   subcategory as "pre-approved"
 ------------------------------------- ------------------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- --------------------------- -----------------------------------------------
   SERVICE CATEGORY          SERVICE CATEGORY        SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
                               DESCRIPTION
----------------------- --------------------------- -----------------------------------------------
                                              
III. TAX SERVICES       Services which are not      o Tax planning and support
                        prohibited by the Rule,     o Tax controversy assistance
                        if an officer of the Fund   o Tax compliance, tax returns, excise
                        determines that using the     tax returns and support
                        Fund's auditor to provide   o Tax opinions
                        these services creates
                        significant synergy in
                        the form of efficiency,
                        minimized disruption, or
                        the ability to maintain a
                        desired level of
                        confidentiality.
----------------------- --------------------------- -----------------------------------------------

------------------------------------- -------------------------
  AUDIT COMMITTEE APPROVAL POLICY         AUDIT COMMITTEE
                                          REPORTING POLICY
------------------------------------- -------------------------
------------------------------------- -------------------------
o "One-time" pre-approval             o A summary of
  for the fund fiscal  year             all such services and
  within a specified dollar limit       related fees
  				        (including comparison
  			                to specified dollar
  			                limits) reported
  			                quarterly.

o Specific approval is
  needed to exceed the
  pre-approved dollar limits for
  these services (see general
  Audit Committee approval policy
  below for details on obtaining
  specific approvals)

o Specific approval is
  needed to use the Fund's
  auditors for tax services not
  denoted as pre-approved, or to add a specific
  service subcategory as
  "pre-approved"
------------------------------------- -------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- --------------------------- -----------------------------------------------
   SERVICE CATEGORY          SERVICE CATEGORY        SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
                               DESCRIPTION
----------------------- --------------------------- -----------------------------------------------
                                              
IV.  OTHER SERVICES     Services which are not      o Business Risk Management support
                        prohibited by the Rule,     o Other control and regulatory
A. SYNERGISTIC,         if an officer of the Fund     compliance projects
UNIQUE QUALIFICATIONS   determines that using the
                        Fund's auditor to provide
                        these services creates
                        significant synergy in
                        the form of efficiency,
                        minimized disruption,
                        the ability to maintain a
                        desired level of
                        confidentiality, or where
                        the Fund's auditors
                        posses unique or superior
                        qualifications to provide
                        these services, resulting
                        in superior value and
                        results for the Fund.
----------------------- --------------------------- -----------------------------------------------

--------------------------------------- ------------------------
    AUDIT COMMITTEE APPROVAL POLICY         AUDIT COMMITTEE
                                            REPORTING POLICY
------------------------------------- --------------------------
                                   
o "One-time" pre-approval             o A summary of
  for the fund fiscal year within       all such services and
  a specified dollar limit              related fees
  			               (including comparison
  			                to specified dollar
  				        limits) reported
                                        quarterly.
o Specific approval is
  needed to exceed the
  pre-approved dollar limits for
  these services (see general
  Audit Committee approval policy
  below for details on obtaining
  specific approvals)

o Specific approval is
  needed to use the Fund's
  auditors for "Synergistic" or
  "Unique Qualifications" Other
  Services not denoted as
  pre-approved to the left, or to
  add a specific service
  subcategory as "pre-approved"
------------------------------------- --------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- ------------------------- -----------------------------------------------
   SERVICE CATEGORY         SERVICE CATEGORY        SPECIFIC PROHIBITED SERVICE SUBCATEGORIES
                              DESCRIPTION
----------------------- ------------------------- -----------------------------------------------
                                            
PROHIBITED  SERVICES    Services which result     1. Bookkeeping or other services
                        in the auditors losing       related to the accounting records or
                        independence status          financial statements of the audit
                        under the Rule.              client*
                                                  2. Financial information systems design
                                                     and implementation*
                                                  3. Appraisal or valuation services,
                                                     fairness* opinions, or
                                                     contribution-in-kind reports
                                                  4. Actuarial services (i.e., setting
                                                     actuarial reserves versus actuarial
                                                     audit work)*
                                                  5. Internal audit outsourcing services*
                                                  6. Management functions or human
                                                     resources
                                                  7. Broker or dealer, investment
                                                     advisor, or investment banking services
                                                  8. Legal services and expert services
                                                     unrelated to the audit
                                                  9. Any other service that the Public
                                                     Company Accounting Oversight Board
                                                     determines, by regulation, is
                                                     impermissible
----------------------- ------------------------- -----------------------------------------------

------------------------------------------- ------------------------------
     AUDIT COMMITTEE APPROVAL POLICY               AUDIT COMMITTEE
                                                  REPORTING POLICY
------------------------------------------- ------------------------------
o These services are not to be              o A summary of all
  performed with the exception of the(*)      services and related
  services that may be permitted              fees reported at each
  if they would not be subject to audit       regularly scheduled
  procedures at the audit client (as          Audit Committee meeting
  defined in rule 2-01(f)(4)) level           will serve as continual
  the firm providing the service.             confirmation that has
  				              not provided any
                                              restricted services.
------------------------------------------- ------------------------------

--------------------------------------------------------------------------------
GENERAL AUDIT COMMITTEE APPROVAL POLICY:
o For all projects, the officers of the Funds and the Fund's auditors will each
  make an assessment to determine that any proposed projects will not impair
  independence.

o Potential services will be classified into the four non-restricted service
  categories and the "Approval of Audit, Audit-Related, Tax and Other
  Services" Policy above will be applied. Any services outside the specific
  pre-approved service subcategories set forth above must be specifically
  approved by the Audit Committee.

o At least quarterly, the Audit Committee shall review a report summarizing the
  services by service category, including fees, provided by the Audit firm as
  set forth in the above policy.

--------------------------------------------------------------------------------


    (2) Disclose the percentage of services described in each of paragraphs (b)
   through (d) of this Item that were approved by the audit committee pursuant
   to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

    N/A

(f) If greater than 50 percent, disclose the percentage of hours expended on the
principal accountant's engagement to audit the registrant's financial statements
for the most recent fiscal year that were attributed to work performed by
persons other than the principal accountant's full-time, permanent employees.

N/A

(g) Disclose the aggregate non-audit fees billed by the registrant's accountant
for services rendered to the registrant, and rendered to the registrant's
investment adviser (not including any sub-adviser whose role is primarily
portfolio management and is subcontracted with or overseen by another investment
adviser), and any entity controlling, controlled by, or under common control
with the adviser that provides ongoing services to the registrant for each of
the last two fiscal years of the registrant.



N/A


(h) Disclose whether the registrant's audit committee of the board of trustees
has considered whether the provision of non-audit services that were rendered to
the registrant's investment adviser (not including any subadviser whose role is
primarily portfolio management and is subcontracted with or overseen by another
investment adviser), and any entity controlling, controlled by, or under common
control with the investment adviser that provides ongoing services to the
registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of
Rule 2-01 of Regulation S-X is compatible with maintaining the principal
accountant's independence.


N/A



Item 5. Audit Committee of Listed Registrants

(a) If the registrant is a listed issuer as defined in Rule 10A-3
under the Exchange Act (17 CFR 240.10A-3), state whether
or not the registrant has a separately-designated standing
 audit committee established in accordance with Section
3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)).
If the registrant has such a committee, however designated,
identify each committee member. If the entire board of directors
is acting as the registrants audit committee as specified in
Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)),
so state.

N/A

(b) If applicable, provide the disclosure required by Rule 10A-3(d)
under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption
from the listing standards for audit committees.

N/A

Item 6. Schedule of Investments.

File Schedule I Investments in securities of unaffiliated issuers
as of the close of the reporting period as set forth in 210.12-
12 of Regulation S-X [17 CFR 210.12-12], unless the schedule is
included as part of the report to shareholders filed under Item
1 of this Form.

Included in Item 1


ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR
CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

A closed-end management investment company that is filing an annual report on
this Form N-CSR must, unless it invests exclusively in non-voting securities,
describe the policies and procedures that it uses to determine how to vote
proxies relating to portfolio securities, including the procedures that the
company uses when a vote presents a conflict between the interests of its
shareholders, on the one hand, and those of the company's investment adviser;
principal underwriter; or any affiliated person (as defined in Section 2(a)(3)
of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules
thereunder) of the company, its investment adviser, or its principal
underwriter, on the other. Include any policies and procedures of the company's
investment adviser, or any other third party, that the company uses, or that are
used on the company's behalf, to determine how to vote proxies relating to
portfolio securities.

N/A



Item 8. Portfolio Managers of Closed-End Management Investment
        Companies.

(a) If the registrant is a closed-end management investment company that
is filing an annual report on this Form N-CSR,provide the following
information:
(1) State the name, title, and length of service of the person or persons
employed by or associated with the registrant or an investment adviser
of the registrant who are primarily responsible for the day-to-day management
of the registrants portfolio (Portfolio Manager). Also state each Portfolio
Managers business experience during the past 5 years.


Information not required in semi annual reports on form NCSR.


Item 9. Purchases of Equity Securities by Closed-End Management
Investment Company and Affiliated Purchasers.

(a) If the registrant is a closed-end management investment company,
in the following tabular format, provide the information specified in
paragraph (b) of this Item with respect to any purchase made by or on
behalf of the registrant or any affiliated purchaser, as defined in
Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of
shares or other units of any class of the registrants equity securities
that is registered by the registrant pursuant to Section 12 of the
Exchange Act (15 U.S.C. 781). Instruction to paragraph (a). Disclose
all purchases covered by this Item, including purchases that do not
satisfy the conditions of the safe harbor of Rule 10b-18 under the
Exchange Act (17 CFR 240.10b-18), made in the period covered by the
report. Provide disclosures covering repurchases made on a monthly basis.
For example, if the reporting period began on January 16 and ended on
July 15, the chart would show repurchases for the months from January 16
through February 15, February 16 through March 15, March 16 through
April 15, April 16 through May 15, May 16 through June 15, and June 16
through July 15.

During the period covered by this report, there were no purchases
made by or on behalf of the registrant or any affiliated purchaser
as defined in Rule 10b-18(a)(3) under the Securities Exchange Act
of 1934 (the Exchange Act), of shares of the registrants equity
securities that are registered by the registrant pursuant to
Section 12 of the Exchange Act.


Item 10. Submission of Matters to a Vote of Security Holders.

Describe any material changes to the procedures by which shareholders
may recommend nominees to the registrants board of directors, where
those changes were implemented after the registrant last provided
disclosure in response to the requirements of Item 7(d)(2)(ii)(G)
of Schedule 14A (17 CFR 240.14a-101), or this Item.


There have been no material changes to the procedures by which the
shareholders may recommend nominees to the registrants board of
directors since the registrant last provided disclosure in response
to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14(A) in
its definitive proxy statement, or this Item.


ITEM 11. CONTROLS AND PROCEDURES.

(a) Disclose the conclusions of the registrant's principal executive officer or
officers and principal financial officer or officers, or persons performing
similar functions, about the effectiveness of the registrant's disclosure
controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR
270.30a-2(c))) based on their evaluation of these controls and procedures as of
a date within 90 days of the filing date of the report that includes the
disclosure required by this paragraph.

The registrant's principal executive officer
and principal financial officer have
concluded that the registrant's disclosure
controls and procedures are effective based
on their evaluation of these controls and
procedures as of a date within 90 days of the
filing date of this report.


(b) Disclose whether or not there were significant changes in the registrant's
internal controls or in other factors that could significantly affect these
controls subsequent to the date of their evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.

There were no significant changes in the
registrant's internal control over financial
reporting that occurred during the second
fiscal quarter of the period covered by this
report that have materially affected, or are
reasonably likely to materially affect, the
registrant's internal control over financial
reporting.

The registrant's principal executive officer and principal financial
officer, however, voluntarily are reporting the following information:

In August of 2006 the registrant's investment adviser
enhanced its internal procedures for reporting performance
information required to be included in prospectuses.
Those enhancements involved additional internal controls
over the appropriateness of performance data
generated for this purpose.  Such enhancements were made
following an internal review which identified
prospectuses relating to certain classes of shares of
a limited number of registrants where, inadvertently,
performance information not reflecting the deduction of
applicable sales charges was included. Those prospectuses
were revised, and the revised prospectuses were distributed to
shareholders.


ITEM 12. EXHIBITS.

File the exhibits listed below as part of this Form. Letter or number the
exhibits in the sequence indicated.

(a) Any code of ethics, or amendment thereto, that is the subject of the
disclosure required by Item 2, to the extent that the registrant intends to
satisfy the Item 2 requirements through filing of an exhibit.



(b) A separate certification for each principal executive officer and principal
financial officer of the registrant as required by Rule 30a-2 under the Act
(17 CFR 270.30a-2).

Filed herewith.





                                   SIGNATURES

                          [See General Instruction F]


Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.


(Registrant) Pioneer Municipal High Income Advantage Trust


By (Signature and Title)* /s/ John F. Cogan, Jr.
John F. Cogan, Jr, President

Date November 29, 2006


Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.


By (Signature and Title)* /s/ John F. Cogan, Jr.
John F. Cogan, Jr., President

Date November 29, 2006


By (Signature and Title)* /s/ Vincent Nave
Vincent Nave, Treasurer

Date November 29, 2006

* Print the name and title of each signing officer under his or her signature.