PAGE  1
000 B000000 03/31/2007
000 C000000 1258943
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST
001 B000000 811-21409
001 C000000 6177427825
002 A000000 60 STATE STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02109
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 N
007 B000000  0
007 C010100  1
007 C010200  2
007 C010300  3
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A000001 PIONEER INVESTMENT MANAGEMENT, INC.
008 B000001 A
008 C000001 801-8255
008 D010001 BOSTON
008 D020001 MA
008 D030001 02109
010 A000001 PIONEER INVESTMENT MANAGEMENT, INC.
010 B000001 801-8255
010 C010001 BOSTON
010 C020001 MA
010 C030001 02109
010 A000002 PRINCETON ADMINISTRATORS, LLC
010 C010002 PRINCETON
010 C020002 NJ
010 C030002 08543
010 C040002 9095
011 A000001 PIONEER FUNDS DISTRIBUTOR, INC.
011 B000001 8-12345678
011 C010001 BOSTON
      PAGE  2
011 C020001 MA
011 C030001 02109
011 C040001 1820
011 A000002 UBS WARBURG
011 B000002 8-022651
011 C010002 STAMFORD
011 C020002 CT
011 C030002 06901
011 A000003 RBC CAPITAL MARKETS
011 B000003 8-045411
011 C010003 MINNEAPOLIS
011 C020003 MN
011 C030003 55402
011 C040003 4422
011 A000004 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
011 B000004 8-7221
011 C010004 NEW YORK
011 C020004 NY
011 C030004 10281
011 C040004 1201
011 A000005 JANNEY MONTGOMERY SCOTT LLC
011 B000005 8-462
011 C010005 PHILADELPHIA
011 C020005 PA
011 C030005 19103
011 C040005 1675
011 A000006 WACHOVIA CAPITAL MARKETS, LLC
011 B000006 8-99999
011 C010006 RICHMOND
011 C020006 VA
011 C030006 23219
012 A000001 PIONEER INV. MGMT. SHAREHOLDER SERVICES, INC.
012 B000001 85-00000
012 C010001 BOSTON
012 C020001 MA
012 C030001 02109
012 A000002 AMERICAN STOCK TRANSFER & TRUST COMPANY
012 B000002 85-00000
012 C010002 BROOKLYN
012 C020002 NY
012 C030002 11219
012 A000003 DEUTSCHE BANK TRUST COMPANY AMERICAS (PREF.)
012 B000003 85-00000
012 C010003 NEW YORK CITY
012 C020003 NY
012 C030003 10005
013 A000001 ERNST & YOUNG LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
013 B040001 5072
      PAGE  3
015 A000001 BROWN BROTHERS HARRIMAN & CO.
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02109
015 E010001 X
018  000000 Y
019 A000000 Y
019 B000000   82
019 C000000 PIONEERFDS
020 C000001      0
020 C000002      0
020 C000003      0
020 C000004      0
020 C000005      0
020 C000006      0
020 C000007      0
020 C000008      0
020 C000009      0
020 C000010      0
021  000000        0
022 A000001 BLACKROCK, INC.
022 B000001 13-3806694
022 C000001   1192249
022 D000001         0
022 A000002 LEHMAN BROTHERS, INC.
022 B000002 13-2518466
022 C000002     10168
022 D000002     11376
022 A000003 B.C. ZIEGLER AND COMPANY
022 B000003 39-0727640
022 C000003     19421
022 D000003      1160
022 A000004 WACHOVIA SECURITIES, LLC
022 B000004 54-0796506
022 C000004      6784
022 D000004     13508
022 A000005 UBS FINANCIAL SERVICES, INC.
022 B000005 13-2638166
022 C000005     10450
022 D000005     10415
022 A000006 HERBERT J. SIMS & CO., INC.
022 B000006 13-5213180
022 C000006     16259
022 D000006      2428
022 A000007 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000007 13-5674085
022 C000007     13000
022 D000007         0
022 A000008 CORBY CAPITAL MARKETS, INC.
022 B000008 52-1037969
      PAGE  4
022 C000008         0
022 D000008      5952
022 A000009 CITIGROUP GLOBAL MARKETS, INC.
022 B000009 11-2418191
022 C000009         0
022 D000009      5487
022 A000010 J. GIORDANO SECURITIES GROUP
022 C000010      3398
022 D000010         0
023 C000000    1277957
023 D000000      71260
024  000000 N
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027  000000 N
042 A000000   0
042 B000000   0
042 C000000   0
042 D000000   0
042 E000000   0
042 F000000   0
042 G000000   0
042 H000000   0
043  000000      0
044  000000      0
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.600
048 A010000        0
048 A020000 0.000
048 B010000        0
048 B020000 0.000
048 C010000        0
048 C020000 0.000
048 D010000        0
048 D020000 0.000
048 E010000        0
048 E020000 0.000
048 F010000        0
048 F020000 0.000
048 G010000        0
048 G020000 0.000
048 H010000        0
      PAGE  5
048 H020000 0.000
048 I010000        0
048 I020000 0.000
048 J010000        0
048 J020000 0.000
048 K010000        0
048 K020000 0.000
049  000000 N
050  000000 N
051  000000 N
052  000000 N
053 A000000 Y
053 B000000 Y
053 C000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 Y
060 B000000 Y
061  000000        0
062 A000000 Y
062 B000000   0.0
062 C000000   0.0
062 D000000   0.0
062 E000000   0.0
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0
062 J000000   0.0
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
      PAGE  6
062 N000000   0.0
062 O000000 135.0
062 P000000   0.0
062 Q000000   0.0
062 R000000   0.8
063 A000000   0
063 B000000 22.2
064 A000000 Y
064 B000000 Y
065  000000 N
066 A000000 N
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 N
070 J020000 N
070 K010000 Y
070 K020000 Y
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
      PAGE  7
071 A000000     85708
071 B000000     94250
071 C000000    490966
071 D000000   17
072 A000000 12
072 B000000    30485
072 C000000        0
072 D000000        0
072 E000000        0
072 F000000     3019
072 G000000      459
072 H000000        0
072 I000000      430
072 J000000       23
072 K000000        0
072 L000000       17
072 M000000       10
072 N000000       24
072 O000000        0
072 P000000        0
072 Q000000        0
072 R000000       58
072 S000000       69
072 T000000        0
072 U000000        0
072 V000000        0
072 W000000       50
072 X000000     4159
072 Y000000       48
072 Z000000    26374
072AA000000     5510
072BB000000        0
072CC010000    12752
072CC020000        0
072DD010000    19557
072DD020000        0
072EE000000        0
073 A010000   0.8600
073 A020000   0.0000
073 B000000   0.0000
073 C000000   0.0000
074 A000000        0
074 B000000        0
074 C000000        0
074 D000000   488393
074 E000000        0
074 F000000        0
074 G000000        0
074 H000000        0
074 I000000     3153
074 J000000    11628
      PAGE  8
074 K000000        0
074 L000000     9189
074 M000000     1539
074 N000000   513902
074 O000000        0
074 P000000      270
074 Q000000        0
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000     1664
074 S000000   150080
074 T000000   361888
074 U010000    22741
074 U020000        0
074 V010000    15.91
074 V020000     0.00
074 W000000   0.0000
074 X000000     9917
074 Y000000        0
075 A000000        0
075 B000000   353260
076  000000    15.61
077 A000000 Y
077 B000000 Y
078  000000 N
080 A000000 ICI MUTUAL INSURANCE CO.
080 C000000    60000
081 A000000 Y
081 B000000  82
082 A000000 N
082 B000000        0
083 A000000 N
083 B000000        0
084 A000000 N
084 B000000        0
085 A000000 Y
085 B000000 N
086 A010000      0
086 A020000      0
086 B010000      0
086 B020000      0
086 C010000      0
086 C020000      0
086 D010000      0
086 D020000      0
086 E010000      0
086 E020000      0
086 F010000      0
086 F020000      0
087 A010000 COMMON STOCK
      PAGE  9
087 A020000 723762100
087 A030000 MAV
087 B010000 PREFERRED STOCK - SERIES A
087 B020000 723762209
087 C010000 PREFERRED STOCK - SERIES B
087 C020000 723762308
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE   MARY KELLERMANN
TITLE       ACCOUNTING MANAGER