WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000852495
<NAME> Cash Trust Series, Inc.
<SERIES>
<NUMBER> 01
<NAME> Government Cash Series
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> May-31-2000
<PERIOD-END> May-31-2000
<INVESTMENTS-AT-COST> 591,912,612
<INVESTMENTS-AT-VALUE> 591,912,612
<RECEIVABLES> 1,837,527
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 7,118
<TOTAL-ASSETS> 593,757,257
<PAYABLE-FOR-SECURITIES> 9,493,350
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,744,500
<TOTAL-LIABILITIES> 11,237,850
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 582,519,407
<SHARES-COMMON-STOCK> 582,519,407
<SHARES-COMMON-PRIOR> 649,080,502
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 582,519,407
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 34,573,136
<OTHER-INCOME> 0
<EXPENSES-NET> (6,298,251)
<NET-INVESTMENT-INCOME> 28,274,885
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 28,274,885
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (28,274,885)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,925,692,502
<NUMBER-OF-SHARES-REDEEMED> (3,016,440,338)
<SHARES-REINVESTED> 24,186,741
<NET-CHANGE-IN-ASSETS> (66,561,095)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3,115,695
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6,894,305
<AVERAGE-NET-ASSETS> 623,139,063
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.050
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> (0.050)
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<EXPENSE-RATIO> 1.01
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0.000
</TABLE>
