<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000701939
<NAME> SEI DAILY INCOME TRUST
<SERIES>
<NUMBER> 061
<NAME> SHORT DURATION GOVERNMENT CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JAN-31-2000
<PERIOD-START> FEB-01-2000
<PERIOD-END> JUL-31-2000
<INVESTMENTS-AT-COST> 82486
<INVESTMENTS-AT-VALUE> 81793
<RECEIVABLES> 42
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 82737
<TOTAL-ASSETS> 414698
<PAYABLE-FOR-SECURITIES> 433
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 68
<TOTAL-LIABILITIES> 501
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 84375
<SHARES-COMMON-STOCK> 1
<SHARES-COMMON-PRIOR> 1
<ACCUMULATED-NII-CURRENT> 10
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (1456)
<ACCUM-APPREC-OR-DEPREC> (693)
<NET-ASSETS> 82236
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 2679
<OTHER-INCOME> 0
<EXPENSES-NET> (194)
<NET-INVESTMENT-INCOME> 2485
<REALIZED-GAINS-CURRENT> (590)
<APPREC-INCREASE-CURRENT> 1229
<NET-CHANGE-FROM-OPS> 3124
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> (4)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (4)
<ACCUMULATED-NII-PRIOR> 11
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> (866)
<GROSS-ADVISORY-FEES> 43
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 320
<AVERAGE-NET-ASSETS> 86788
<PER-SHARE-NAV-BEGIN> 9.86
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> 0.08
<PER-SHARE-DIVIDEND> (0.27)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.94
<EXPENSE-RATIO> 0.75
</TABLE>
