<PAGE> PAGE 1
000 A000000 08/31/99
000 C000000 0000769894
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 PAINEWEBBER MUTUAL FUND TRUST
001 B000000 811-4312
001 C000000 2127133041
002 A000000 51 WEST 52ND STREET
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10019
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 2
007 C010100 1
007 C020100 CALIFORNIA TAX-FREE INCOME FUND
007 C030100 N
007 C010200 2
007 C020200 NATIONAL TAX-FREE INCOME FUND
007 C030200 N
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 A00AA01 MITCHELL HUTCHINS ASSET MANAGEMENT INC.
008 B00AA01 A
008 C00AA01 801-13219
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10019
010 A00AA01 MITCHELL HUTCHINS ASSET MANAGEMENT INC.
010 B00AA01 13219
010 C01AA01 NEW YORK
010 C02AA01 NY
010 C03AA01 10019
011 A00AA01 PAINEWEBBER, INC.
011 B00AA01 8-16267
011 C01AA01 NEW YORK
011 C02AA01 NY
<PAGE> PAGE 2
011 C03AA01 10019
012 A00AA01 PFPC, INC.
012 B00AA01 85-0000000
012 C01AA01 WILMINGTON
012 C02AA01 DE
012 C03AA01 19899
013 A00AA01 ERNST & YOUNG LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10019
014 A00AA01 PAINEWEBBER, INC.
014 B00AA01 8-16267
014 A00AA02 MITCHELL HUTCHINS ASSET MANAGEMENT, INC.
014 B00AA02 8-21901
015 A00AA01 STATE STREET BANK & TRUST CO.
015 B00AA01 C
015 C01AA01 NORTH QUINCY
015 C02AA01 MA
015 C03AA01 02171
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 74
019 C00AA00 PAINEWEBBE
020 A000001 MERRILL LYNCH, PIERCE FENNER & SMITH, INC.
020 B000001 13-5674085
020 C000001 1580
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 1580
022 A000001 SMITH BARNEY, INC.
022 B000001 13-3371860
022 C000001 50772
022 D000001 43497
022 A000002 ADVEST INC.
022 C000002 10449
022 D000002 16174
022 A000003 MORGAN STANLEY & CO., INC.
022 B000003 13-2655998
022 C000003 8900
022 D000003 9000
022 A000004 MORGAN (J.P.) SECURITIES, INC.
022 B000004 13-3224016
022 C000004 6300
<PAGE> PAGE 3
022 D000004 6234
022 A000005 PIPER JAFFRAY, INC.
022 C000005 0
022 D000005 10023
022 A000006 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
022 B000006 13-5674085
022 C000006 4880
022 D000006 5129
022 A000007 NUVEEN (JOHN) & CO., INC.
022 C000007 5700
022 D000007 4000
022 A000008 STERNE, AGEE & LEACH, INC.
022 C000008 7792
022 D000008 0
022 A000009 LEHMAN BROS., INC.
022 B000009 13-2518466
022 C000009 4000
022 D000009 3500
022 A000010 ABN AMRO SECURITIES, INC.
022 B000010 13-3227945
022 C000010 3311
022 D000010 3101
023 C000000 136853
023 D000000 134150
024 00AA00 N
025 D00AA01 0
025 D00AA02 0
025 D00AA03 0
025 D00AA04 0
025 D00AA05 0
025 D00AA06 0
025 D00AA07 0
025 D00AA08 0
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 Y
027 000000 Y
037 00AA00 N
038 00AA00 0
039 00AA00 Y
040 00AA00 Y
041 00AA00 Y
045 00AA00 Y
046 00AA00 N
047 00AA00 Y
<PAGE> PAGE 4
048 00AA00 0.500
048 A01AA00 0
048 A02AA00 0.000
048 B01AA00 0
048 B02AA00 0.000
048 C01AA00 0
048 C02AA00 0.000
048 D01AA00 0
048 D02AA00 0.000
048 E01AA00 0
048 E02AA00 0.000
048 F01AA00 0
048 F02AA00 0.000
048 G01AA00 0
048 G02AA00 0.000
048 H01AA00 0
048 H02AA00 0.000
048 I01AA00 0
048 I02AA00 0.000
048 J01AA00 0
048 J02AA00 0.000
048 K01AA00 0
048 K02AA00 0.000
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 N
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 Y
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 N
055 A00AA00 N
055 B00AA00 N
056 00AA00 Y
057 00AA00 N
058 A00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 1000
066 A00AA00 N
067 00AA00 N
068 A00AA00 N
068 B00AA00 N
<PAGE> PAGE 5
069 00AA00 N
077 A000000 N
078 000000 N
080 C00AA00 0
081 B00AA00 0
082 B00AA00 0
083 B00AA00 0
084 B00AA00 0
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
028 A010100 2458
028 A020100 295
028 A030100 0
028 A040100 3165
028 B010100 2959
028 B020100 309
028 B030100 0
028 B040100 1684
028 C010100 2145
028 C020100 264
028 C030100 0
028 C040100 1946
028 D010100 1435
028 D020100 284
028 D030100 0
028 D040100 3183
028 E010100 1236
028 E020100 292
028 E030100 0
028 E040100 2568
028 F010100 1314
028 F020100 271
028 F030100 0
028 F040100 3309
028 G010100 11547
028 G020100 1715
028 G030100 0
028 G040100 15855
028 H000100 5430
029 000100 Y
030 A000100 74
<PAGE> PAGE 6
030 B000100 4.00
030 C000100 0.00
031 A000100 47
031 B000100 0
032 000100 0
033 000100 27
034 000100 Y
035 000100 37
036 A000100 N
036 B000100 0
042 A000100 0
042 B000100 0
042 C000100 0
042 D000100 0
042 E000100 0
042 F000100 0
042 G000100 0
042 H000100 100
043 000100 283
044 000100 0
049 000100 N
050 000100 N
051 000100 N
052 000100 N
053 A000100 Y
053 B000100 Y
053 C000100 N
062 A000100 Y
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 0.0
062 M000100 0.0
062 N000100 0.0
062 O000100 102.8
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 20.3
064 A000100 Y
064 B000100 N
070 A010100 Y
070 A020100 N
<PAGE> PAGE 7
070 B010100 N
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 Y
070 E020100 Y
070 F010100 N
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
070 K020100 N
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 Y
070 Q020100 N
070 R010100 Y
070 R020100 N
071 A000100 19507
071 B000100 24750
071 C000100 154587
071 D000100 13
072 A000100 6
072 B000100 4047
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 374
072 G000100 0
072 H000100 0
072 I000100 25
072 J000100 39
072 K000100 4
072 L000100 20
072 M000100 5
<PAGE> PAGE 8
072 N000100 21
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 20
072 S000100 13
072 T000100 283
072 U000100 0
072 V000100 0
072 W000100 11
072 X000100 815
072 Y000100 150
072 Z000100 3382
072AA000100 390
072BB000100 0
072CC010100 0
072CC020100 8384
072DD010100 2733
072DD020100 649
072EE000100 0
073 A010100 0.0000
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 76
074 B000100 0
074 C000100 0
074 D000100 145446
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 0
074 K000100 0
074 L000100 2310
074 M000100 28
074 N000100 147860
074 O000100 5186
074 P000100 82
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 1164
074 S000100 0
074 T000100 141428
074 U010100 10481
074 U020100 2873
074 V010100 10.59
074 V020100 0.00
<PAGE> PAGE 9
074 W000100 0.0000
074 X000100 3141
074 Y000100 22443
075 A000100 0
075 B000100 148829
076 000100 0.00
028 A010200 2492
028 A020200 726
028 A030200 0
028 A040200 6250
028 B010200 2665
028 B020200 779
028 B030200 0
028 B040200 4076
028 C010200 1220
028 C020200 662
028 C030200 0
028 C040200 4441
028 D010200 1777
028 D020200 720
028 D030200 0
028 D040200 3730
028 E010200 2297
028 E020200 753
028 E030200 0
028 E040200 2729
028 F010200 2168
028 F020200 698
028 F030200 0
028 F040200 2707
028 G010200 12619
028 G020200 4338
028 G030200 0
028 G040200 23933
028 H000200 5795
029 000200 Y
030 A000200 74
030 B000200 4.00
030 C000200 0.00
031 A000200 47
031 B000200 0
032 000200 0
033 000200 27
034 000200 Y
035 000200 43
036 A000200 Y
036 B000200 0
042 A000200 0
042 B000200 0
042 C000200 0
042 D000200 0
<PAGE> PAGE 10
042 E000200 0
042 F000200 0
042 G000200 0
042 H000200 100
043 000200 560
044 000200 0
049 000200 N
050 000200 N
051 000200 N
052 000200 N
053 A000200 N
062 A000200 Y
062 B000200 0.0
062 C000200 0.0
062 D000200 0.0
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 -5.0
062 M000200 0.0
062 N000200 0.0
062 O000200 105.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 0
063 B000200 19.1
064 A000200 Y
064 B000200 N
070 A010200 Y
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 Y
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 Y
070 E020200 Y
070 F010200 N
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
<PAGE> PAGE 11
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 N
070 Q010200 Y
070 Q020200 N
070 R010200 Y
070 R020200 N
071 A000200 54896
071 B000200 51029
071 C000200 290112
071 D000200 18
072 A000200 6
072 B000200 8158
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 724
072 G000200 0
072 H000200 0
072 I000200 43
072 J000200 56
072 K000200 10
072 L000200 20
072 M000200 5
072 N000200 22
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 14
072 S000200 14
072 T000200 560
072 U000200 0
072 V000200 0
072 W000200 1
072 X000200 1469
072 Y000200 0
072 Z000200 6689
072AA000200 33
072BB000200 0
072CC010200 0
<PAGE> PAGE 12
072CC020200 16084
072DD010200 5249
072DD020200 1440
072EE000200 0
073 A010200 0.2700
073 A020200 0.2300
073 B000200 0.0000
073 C000200 0.0000
074 A000200 77
074 B000200 0
074 C000200 0
074 D000200 289914
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 0
074 K000200 0
074 L000200 5003
074 M000200 106
074 N000200 295100
074 O000200 17760
074 P000200 207
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 881
074 S000200 0
074 T000200 276252
074 U010200 19002
074 U020200 5915
074 V010200 11.09
074 V020200 0.00
074 W000200 0.0000
074 X000200 7729
074 Y000200 42315
075 A000200 0
075 B000200 287899
076 000200 0.00
SIGNATURE PAUL SCHUBERT
TITLE TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER CALIFORNIA TAX-FREE INCOME FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 116,779
<INVESTMENTS-AT-VALUE> 114,156
<RECEIVABLES> 1,813
<ASSETS-OTHER> 82
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 116,051
<PAYABLE-FOR-SECURITIES> 4,070
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 978
<TOTAL-LIABILITIES> 5,048
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 112,730
<SHARES-COMMON-STOCK> 10,481
<SHARES-COMMON-PRIOR> 10,670
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 898
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2,625)
<NET-ASSETS> 111,003
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3,176
<OTHER-INCOME> 0
<EXPENSES-NET> (447)
<NET-INVESTMENT-INCOME> 2,733
<REALIZED-GAINS-CURRENT> 306
<APPREC-INCREASE-CURRENT> (6,580)
<NET-CHANGE-FROM-OPS> (3,542)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2,733)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 737
<NUMBER-OF-SHARES-REDEEMED> (1,050)
<SHARES-REINVESTED> 123
<NET-CHANGE-IN-ASSETS> (8,389)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 592
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 294
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 564
<AVERAGE-NET-ASSETS> 116,890
<PER-SHARE-NAV-BEGIN> 11.18
<PER-SHARE-NII> 0.26
<PER-SHARE-GAIN-APPREC> (0.59)
<PER-SHARE-DIVIDEND> (0.26)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.59
<EXPENSE-RATIO> 0.76
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER NATIONAL TAX FREE INCOME-CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 222162
<INVESTMENTS-AT-VALUE> 221098
<RECEIVABLES> 3815
<ASSETS-OTHER> 81
<OTHER-ITEMS-ASSETS> 59
<TOTAL-ASSETS> 225053
<PAYABLE-FOR-SECURITIES> 13544
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 830
<TOTAL-LIABILITIES> 14374
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 210758
<SHARES-COMMON-STOCK> 19002
<SHARES-COMMON-PRIOR> 19365
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 840
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (920)
<NET-ASSETS> 210678
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 6222
<OTHER-INCOME> 0
<EXPENSES-NET> (968)
<NET-INVESTMENT-INCOME> 5254
<REALIZED-GAINS-CURRENT> 25
<APPREC-INCREASE-CURRENT> (12266)
<NET-CHANGE-FROM-OPS> (6987)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (5249)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5435
<NUMBER-OF-SHARES-REDEEMED> (10643)
<SHARES-REINVESTED> 3600
<NET-CHANGE-IN-ASSETS> (20738)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 810
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 553
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 968
<AVERAGE-NET-ASSETS> 218992
<PER-SHARE-NAV-BEGIN> 11.73
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> (0.64)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.27)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.09
<EXPENSE-RATIO> .87
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER CALIFORNIA TAX-FREE INCOME FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 12,849
<INVESTMENTS-AT-VALUE> 12,560
<RECEIVABLES> 199
<ASSETS-OTHER> 10
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 12,769
<PAYABLE-FOR-SECURITIES> 448
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 108
<TOTAL-LIABILITIES> 556
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 12,404
<SHARES-COMMON-STOCK> 1,152
<SHARES-COMMON-PRIOR> 1,230
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 99
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (290)
<NET-ASSETS> 12,213
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 350
<OTHER-INCOME> 0
<EXPENSES-NET> (98)
<NET-INVESTMENT-INCOME> 252
<REALIZED-GAINS-CURRENT> 33
<APPREC-INCREASE-CURRENT> (724)
<NET-CHANGE-FROM-OPS> (438)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (252)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 235
<NUMBER-OF-SHARES-REDEEMED> (323)
<SHARES-REINVESTED> 10
<NET-CHANGE-IN-ASSETS> (875)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 68
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 32
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 111
<AVERAGE-NET-ASSETS> 12,954
<PER-SHARE-NAV-BEGIN> 11.18
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> (0.58)
<PER-SHARE-DIVIDEND> (0.21)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.60
<EXPENSE-RATIO> 1.51
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER NATIONAL TAX FREE INCOME-CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 21100
<INVESTMENTS-AT-VALUE> 20999
<RECEIVABLES> 362
<ASSETS-OTHER> 8
<OTHER-ITEMS-ASSETS> 7
<TOTAL-ASSETS> 21376
<PAYABLE-FOR-SECURITIES> 1286
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 79
<TOTAL-LIABILITIES> 1365
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 20017
<SHARES-COMMON-STOCK> 1805
<SHARES-COMMON-PRIOR> 2054
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 80
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (87)
<NET-ASSETS> 20009
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 591
<OTHER-INCOME> 0
<EXPENSES-NET> (174)
<NET-INVESTMENT-INCOME> 417
<REALIZED-GAINS-CURRENT> 2
<APPREC-INCREASE-CURRENT> (1165)
<NET-CHANGE-FROM-OPS> (746)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (428)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 262
<NUMBER-OF-SHARES-REDEEMED> (2967)
<SHARES-REINVESTED> 2126
<NET-CHANGE-IN-ASSETS> 95
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 86
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 52
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 174
<AVERAGE-NET-ASSETS> 21496
<PER-SHARE-NAV-BEGIN> 11.73
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> (0.65)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.23)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.08
<EXPENSE-RATIO> 1.65
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER CALIFORNIA TAX-FREE INCOME FUND CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 18,790
<INVESTMENTS-AT-VALUE> 18,369
<RECEIVABLES> 292
<ASSETS-OTHER> 13
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 18,674
<PAYABLE-FOR-SECURITIES> 655
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 157
<TOTAL-LIABILITIES> 812
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 18,139
<SHARES-COMMON-STOCK> 1,688
<SHARES-COMMON-PRIOR> 1,673
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 144
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (422)
<NET-ASSETS> 17,861
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 511
<OTHER-INCOME> 0
<EXPENSES-NET> (119)
<NET-INVESTMENT-INCOME> 390
<REALIZED-GAINS-CURRENT> 49
<APPREC-INCREASE-CURRENT> (1,059)
<NET-CHANGE-FROM-OPS> (620)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (390)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 243
<NUMBER-OF-SHARES-REDEEMED> (251)
<SHARES-REINVESTED> 23
<NET-CHANGE-IN-ASSETS> (1,300)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 93
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 47
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 138
<AVERAGE-NET-ASSETS> 18,725
<PER-SHARE-NAV-BEGIN> 11.17
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> (0.59)
<PER-SHARE-DIVIDEND> (0.23)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.58
<EXPENSE-RATIO> 1.26
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER NATIONAL TAX FREE INCOME-CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 47465
<INVESTMENTS-AT-VALUE> 47238
<RECEIVABLES> 815
<ASSETS-OTHER> 17
<OTHER-ITEMS-ASSETS> 12
<TOTAL-ASSETS> 48082
<PAYABLE-FOR-SECURITIES> 2894
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 177
<TOTAL-LIABILITIES> 3071
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 45029
<SHARES-COMMON-STOCK> 4060
<SHARES-COMMON-PRIOR> 4069
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 179
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (197)
<NET-ASSETS> 45012
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1329
<OTHER-INCOME> 0
<EXPENSES-NET> (325)
<NET-INVESTMENT-INCOME> 1004
<REALIZED-GAINS-CURRENT> 5
<APPREC-INCREASE-CURRENT> (2621)
<NET-CHANGE-FROM-OPS> (1612)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (1001)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 429
<NUMBER-OF-SHARES-REDEEMED> (603)
<SHARES-REINVESTED> 456
<NET-CHANGE-IN-ASSETS> (2614)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 170
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 118
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 325
<AVERAGE-NET-ASSETS> 46961
<PER-SHARE-NAV-BEGIN> 11.73
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> (0.64)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.24)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.09
<EXPENSE-RATIO> 1.39
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER CALIFORNIA TAX-FREE INCOME FUND CLASS Y
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 369
<INVESTMENTS-AT-VALUE> 361
<RECEIVABLES> 6
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 367
<PAYABLE-FOR-SECURITIES> 13
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 3
<TOTAL-LIABILITIES> 16
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 357
<SHARES-COMMON-STOCK> 33
<SHARES-COMMON-PRIOR> 28
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (9)
<NET-ASSETS> 351
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 10
<OTHER-INCOME> 0
<EXPENSES-NET> (1)
<NET-INVESTMENT-INCOME> 7
<REALIZED-GAINS-CURRENT> 1
<APPREC-INCREASE-CURRENT> (21)
<NET-CHANGE-FROM-OPS> (13)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (7)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 17
<NUMBER-OF-SHARES-REDEEMED> (12)
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> (24)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1
<AVERAGE-NET-ASSETS> 260
<PER-SHARE-NAV-BEGIN> 11.18
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> (0.59)
<PER-SHARE-DIVIDEND> (0.27)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.59
<EXPENSE-RATIO> 0.50
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> PAINEWEBBER NATIONAL TAX FREE INCOME-CLASS Y
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-START> MAR-01-1999
<PERIOD-END> AUG-31-1999
<INVESTMENTS-AT-COST> 583
<INVESTMENTS-AT-VALUE> 579
<RECEIVABLES> 10
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 589
<PAYABLE-FOR-SECURITIES> 36
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2
<TOTAL-LIABILITIES> 38
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 553
<SHARES-COMMON-STOCK> 50
<SHARES-COMMON-PRIOR> 27
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 2
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2)
<NET-ASSETS> 553
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 16
<OTHER-INCOME> 0
<EXPENSES-NET> (2)
<NET-INVESTMENT-INCOME> 14
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (31)
<NET-CHANGE-FROM-OPS> (17)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (11)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 230
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 450
<PER-SHARE-NAV-BEGIN> 11.73
<PER-SHARE-NII> 0.29
<PER-SHARE-GAIN-APPREC> (0.64)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.29)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.09
<EXPENSE-RATIO> .67
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
