<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000797657
<NAME> BT INVESTMENT FUNDS
<SERIES>
<NUMBER> 16
<NAME> SMALL CAP FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-END> MAR-31-2000
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<OTHER-ITEMS-ASSETS> 32836
<TOTAL-ASSETS> 334829423
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<OTHER-ITEMS-LIABILITIES> 1567928
<TOTAL-LIABILITIES> 1567928
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 186755675
<SHARES-COMMON-STOCK> 11610478
<SHARES-COMMON-PRIOR> 9881175
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 84570820
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 61935000
<NET-ASSETS> 333261495
<DIVIDEND-INCOME> 0
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<OTHER-INCOME> 241404
<EXPENSES-NET> 853792
<NET-INVESTMENT-INCOME> (612388)
<REALIZED-GAINS-CURRENT> 85747159
<APPREC-INCREASE-CURRENT> 222969577
<NET-CHANGE-FROM-OPS> 108104348
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (32546077)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 11164209
<NUMBER-OF-SHARES-REDEEMED> 994334
<SHARES-REINVESTED> (10429240)
<NET-CHANGE-IN-ASSETS> 116989195
<ACCUMULATED-NII-PRIOR> (627826)
<ACCUMULATED-GAINS-PRIOR> 85840427
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
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<GROSS-EXPENSE> 882843
<AVERAGE-NET-ASSETS> 263401158
<PER-SHARE-NAV-BEGIN> 21.89
<PER-SHARE-NII> (0.05)
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<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 3.32
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 28.70
<EXPENSE-RATIO> 1.25
</TABLE>
