<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000769894
<NAME> PAINEWEBBER MUTUAL FUND TRUST
<SERIES>
<NUMBER> 1
<NAME> CALIFORNIA TAX FREE INCOME - Y
<MULTIPLIER> 1000
<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> 476
<INVESTMENTS-AT-VALUE> 479
<RECEIVABLES> 8
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 487
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1
<TOTAL-LIABILITIES> 1
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 487
<SHARES-COMMON-STOCK> 45
<SHARES-COMMON-PRIOR> 35
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (4)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3
<NET-ASSETS> 486
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 14
<OTHER-INCOME> 0
<EXPENSES-NET> (1)
<NET-INVESTMENT-INCOME> 13
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 28
<NET-CHANGE-FROM-OPS> 41
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (11)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 2
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (3)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 405
<PER-SHARE-NAV-BEGIN> 10.17
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> 0.62
<PER-SHARE-DIVIDEND> (0.27)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.79
<EXPENSE-RATIO> 0.45
</TABLE>