[ARTICLE] 6
[CIK] 0000809991
[NAME] PAINEWEBBER MUNICIPAL SERIES
[SERIES]
[NUMBER] 1
[NAME] MUNICIPAL HIGH INCOME CLASS A
[MULTIPLIER] 1000
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] FEB-28-2001
[PERIOD-START] MAR-01-2000
[PERIOD-END] AUG-31-2000
[INVESTMENTS-AT-COST] 62991
[INVESTMENTS-AT-VALUE] 60176
[RECEIVABLES] 1198
[ASSETS-OTHER] 68
[OTHER-ITEMS-ASSETS] 37
[TOTAL-ASSETS] 61479
[PAYABLE-FOR-SECURITIES] 0
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 168
[TOTAL-LIABILITIES] 168
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 64651
[SHARES-COMMON-STOCK] 6185
[SHARES-COMMON-PRIOR] 6348
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] 0
[ACCUMULATED-NET-GAINS] (525)
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (2815)
[NET-ASSETS] 61311
[DIVIDEND-INCOME] 0
[INTEREST-INCOME] 2082
[OTHER-INCOME] 0
[EXPENSES-NET] (353)
[NET-INVESTMENT-INCOME] 1729
[REALIZED-GAINS-CURRENT] (6)
[APPREC-INCREASE-CURRENT] 325
[NET-CHANGE-FROM-OPS] 2048
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] (1729)
[DISTRIBUTIONS-OF-GAINS] 0
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 315
[NUMBER-OF-SHARES-REDEEMED] (570)
[SHARES-REINVESTED] 92
[NET-CHANGE-IN-ASSETS] (1281)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] (502)
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 188
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 353
[AVERAGE-NET-ASSETS] 62256
[PER-SHARE-NAV-BEGIN] 9.86
[PER-SHARE-NII] 0.28
[PER-SHARE-GAIN-APPREC] 0.05
[PER-SHARE-DIVIDEND] (0.28)
[PER-SHARE-DISTRIBUTIONS] 0
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 9.91
[EXPENSE-RATIO] 1.12
</TABLE>
