<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the Cash
Account Trust--Money Market Portfolio Semiannual Report for the period ended
10/31/00 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<CIK> 0000858372
<NAME> CASH ACCOUNT TRUST
<SERIES>
<NUMBER> 001
<NAME> MONEY MARKET PORTFOLIO-PREMIUM RESERVE MONEY MARKET SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> APR-30-2000
<PERIOD-START> MAY-01-2000
<PERIOD-END> OCT-31-2000
<INVESTMENTS-AT-COST> 9,590,397,302
<INVESTMENTS-AT-VALUE> 9,590,397,302
<RECEIVABLES> 29,500,467
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9,619,897,769
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 86,173,392
<TOTAL-LIABILITIES> 86,173,392
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 54,327,286
<SHARES-COMMON-PRIOR> 16,932,129
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 9,533,724,377
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> (282,730,201)
<OTHER-INCOME> 0
<EXPENSES-NET> 41,086,689
<NET-INVESTMENT-INCOME> 241,643,512
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 241,643,512
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (241,643,512)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 71,088,124
<NUMBER-OF-SHARES-REDEEMED> (34,381,779)
<SHARES-REINVESTED> 688,812
<NET-CHANGE-IN-ASSETS> 3,007,551,694
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,708,011
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 45,333,108
<AVERAGE-NET-ASSETS> 30,302,055
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (0.03)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.54
</TABLE>
