<PAGE> PAGE 1
000 A000000 06/30/97
000 C000000 787628
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 SCUDDER INSTITUTIONAL FUND, INC.
001 B000000 811-4555
001 C000000 2123266656
002 A000000 345 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10154
002 D020000 0010
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 4
007 C010100 1
007 C010200 2
007 C020200 INSTITUTIONAL GOVERNMENT PORTFOLIO
007 C030200 N
007 C010300 3
007 C010400 4
007 C020400 INSTITUTIONAL CASH PORTFOLIO
007 C030400 N
007 C010500 5
007 C010600 6
007 C010700 7
007 C020700 INSTITUTIONAL TAX-FREE PORTFOLIO
007 C030700 N
007 C010800 8
007 C010900 9
007 C020900 INSTITUTIONAL INTERNATIONAL EQUITY PORTFOLIO
007 C030900 N
007 C011000 10
010 A00AA01 SCUDDER FUND ACCOUNTING CORPORATION
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02110
013 A00AA01 PRICE WATERHOUSE, LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10022
015 A00AA01 STATE STREET BANK & TRUST COMPANY
015 B00AA01 C
<PAGE> PAGE 2
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02110
015 E01AA01 X
015 A00AA02 BROWN BROTHERS HARRIMAN & COMPANY
015 B00AA02 C
015 C01AA02 BOSTON
015 C02AA02 MA
015 C03AA02 02109
015 E01AA02 X
015 A00AA03 MORGAN GUARANTY TRUST COMPANY
015 B00AA03 S
015 C01AA03 NEW YORK
015 C02AA03 NY
015 C03AA03 10260
015 E01AA03 X
015 A00AA04 CHEMICAL BANK
015 B00AA04 S
015 C01AA04 NEW YORK
015 C02AA04 NY
015 C03AA04 10041
015 E01AA04 X
015 A00AA05 THE BANK OF NEW YORK
015 B00AA05 S
015 C01AA05 NEW YORK
015 C02AA05 NY
015 C03AA05 10015
015 E01AA05 X
015 A00AA06 BANKERS TRUST COMPANY
015 B00AA06 S
015 C01AA06 NEW YORK
015 C02AA06 NY
015 C03AA06 10015
015 E01AA06 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 7
019 C00AA00 SCUDINSTFD
020 A000001 GOLDMAN SACHS & CO.
020 C000001 3
020 A000002 MORGAN STANLEY & CO.
020 C000002 2
020 A000003 LEHMAN BROTHERS, INC.
020 C000003 2
020 A000004 NIKKO SECURITIES CO., LTD.
020 C000004 2
020 A000005 CHEUVREUX DE VIRIEU S.A.
020 C000005 2
020 A000006 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
020 C000006 1
020 A000007 SBC WARBURG, INC.
<PAGE> PAGE 3
020 C000007 1
020 A000008 ENSKILDA SECURITIES
020 C000008 1
020 A000009 SOCIETE GENERALEINC.
020 C000009 1
020 A000010 CARNEGIE, INC.
020 C000010 1
021 000000 24
022 A000001 CANADIAN IMPERIAL BANK
022 C000001 41871
022 D000001 14923
022 A000002 DRESDNER
022 C000002 47912
022 D000002 5995
022 A000003 GOLDMAN, SACHS & CO
022 C000003 69716
022 D000003 157
022 A000004 MERRILL LYNCH
022 C000004 91151
022 D000004 49161
022 A000005 MESEROW
022 C000005 54849
022 D000005 0
022 A000006 NATIONS BANK OF NORTH CAROLINA
022 C000006 129260
022 D000006 975
022 A000007 PRUDENTIAL FUNDING
022 C000007 52715
022 D000007 0
022 A000008 SNAWA BKG SEC
022 C000008 68266
022 D000008 1588
022 A000009 THE FIRST BOSTON CORP
022 C000009 61729
022 D000009 80
022 A000010 WILLIAM CAPITAL
022 C000010 110624
022 D000010 4592
023 C000000 6222327
023 D000000 216709
026 A000000 N
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 Y
026 F000000 N
026 G010000 N
026 G020000 Y
026 H000000 N
027 000000 Y
077 A000000 N
<PAGE> PAGE 4
078 000000 N
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
028 G030400 0
028 G040400 333481
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062 A000400 Y
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062 F000400 34.1
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070 A010400 Y
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070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
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070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 N
070 J020400 N
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070 K020400 N
070 L010400 Y
070 L020400 Y
070 M010400 N
070 M020400 N
<PAGE> PAGE 9
070 N010400 Y
070 N020400 N
070 O010400 N
070 O020400 N
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070 P020400 N
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070 R020400 N
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<PAGE> PAGE 10
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<PAGE> PAGE 11
071 A000500 0
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028 A010700 15970
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<PAGE> PAGE 12
028 E040700 10501
028 F010700 23222
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028 F030700 0
028 F040700 15613
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062 E000700 100.0
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<PAGE> PAGE 13
070 H010700 N
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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050 000900 N
051 000900 N
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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SIGNATURE THOMAS F. MCDONOUGH
TITLE VICE PRESIDENT
<TABLE> <S> <C>
<ARTICLE>6
<LEGEND>
This schedule contains summary financial information extracted from the
Scudder Institutional Fund, Inc. Government Semiannual Report for the fiscal
period ended 6/30/97 and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<SERIES>
<NUMBER>2
<NAME>SIFI GOVERNMENT
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<INVESTMENTS-AT-COST> 45,630,634
<INVESTMENTS-AT-VALUE> 45,630,634
<RECEIVABLES> 185,395
<ASSETS-OTHER> 10,539
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<TOTAL-ASSETS> 45,826,568
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 248,137
<TOTAL-LIABILITIES> 248,137
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 45,578,432
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<SHARES-COMMON-PRIOR> 47,031,472
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<NET-ASSETS> 45,578,431
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1,227,083
<OTHER-INCOME> 0
<EXPENSES-NET> 88,286
<NET-INVESTMENT-INCOME> 1,138,797
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 1,138,797
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1,138,797
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 42,815,907
<NUMBER-OF-SHARES-REDEEMED> (44,266,153)
<SHARES-REINVESTED> 81
<NET-CHANGE-IN-ASSETS> (1,451,164)
<ACCUMULATED-NII-PRIOR> 0
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<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 34,125
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<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 45,878,961
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
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<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> (0.03)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.39
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE>6
<LEGEND>
This schedule contains summary financial information extracted from the
Scudder Institutional Fund, Inc. Cash Semiannual Report for the fiscal period
ended 6/30/97 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<SERIES>
<NUMBER>4
<NAME>SIFI CASH
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<INVESTMENTS-AT-COST> 308,684,811
<INVESTMENTS-AT-VALUE> 308,684,811
<RECEIVABLES> 1,541,254
<ASSETS-OTHER> 16,256
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 310,242,321
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 3,350,316
<TOTAL-LIABILITIES> 3,350,316
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 306,892,005
<SHARES-COMMON-STOCK> 306,892,005
<SHARES-COMMON-PRIOR> 272,183,819
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 306,892,005
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 8,819,691
<OTHER-INCOME> 0
<EXPENSES-NET> 345,182
<NET-INVESTMENT-INCOME> 8,474,508
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 8,474,508
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (8,474,508)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 366,042,296
<NUMBER-OF-SHARES-REDEEMED> (333,480,270)
<SHARES-REINVESTED> 2,161,825
<NET-CHANGE-IN-ASSETS> 34,722,171
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 239,952
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 322,546,798
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> (0.03)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.22
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE>6
<LEGEND>
This schedule contains summary financial information extracted from the Scudder
Institutional Fund, Inc. Tax Free Semiannual Report for the fiscal year ended
6/30/97 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<SERIES>
<NUMBER>7
<NAME>SIFI TAX FREE
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<INVESTMENTS-AT-COST> 96,330,493
<INVESTMENTS-AT-VALUE> 96,330,493
<RECEIVABLES> 749,213
<ASSETS-OTHER> 4,263,218
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 101,342,924
<PAYABLE-FOR-SECURITIES> 2,013,390
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 369,806
<TOTAL-LIABILITIES> 2,383,196
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 98,959,728
<SHARES-COMMON-STOCK> 98,959,728
<SHARES-COMMON-PRIOR> 104,106,209
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 98,959,728
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1,736,332
<OTHER-INCOME> 0
<EXPENSES-NET> 145,800
<NET-INVESTMENT-INCOME> 1,590,532
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 1,590,532
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1,590,532
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 95,355,634
<NUMBER-OF-SHARES-REDEEMED> (100,481,664)
<SHARES-REINVESTED> 66,043
<NET-CHANGE-IN-ASSETS> (5,064,385)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 72,078
<INTEREST-EXPENSE> 14,625
<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 96,953,195
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> (0.02)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.30
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the
Institutional International Equity Semiannual Report for the fiscal period ended
6/30/97 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<SERIES>
<NUMBER>9
<NAME>Institutional International Equity
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<INVESTMENTS-AT-COST> 16,626,986
<INVESTMENTS-AT-VALUE> 20,555,548
<RECEIVABLES> 135,006
<ASSETS-OTHER> 23,193
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 20,713,747
<PAYABLE-FOR-SECURITIES> 2,784
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 64,460
<TOTAL-LIABILITIES> 67,244
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 17,435,524
<SHARES-COMMON-STOCK> 1,452,762
<SHARES-COMMON-PRIOR> 1,433,768
<ACCUMULATED-NII-CURRENT> 157,402
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (873,968)
<ACCUM-APPREC-OR-DEPREC> 3,927,545
<NET-ASSETS> 20,646,503
<DIVIDEND-INCOME> 216,548
<INTEREST-INCOME> 29,366
<OTHER-INCOME> 0
<EXPENSES-NET> 87,659
<NET-INVESTMENT-INCOME> 158,255
<REALIZED-GAINS-CURRENT> (711,163)
<APPREC-INCREASE-CURRENT> 3,056,075
<NET-CHANGE-FROM-OPS> 2,503,167
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 28,615
<NUMBER-OF-SHARES-REDEEMED> (9,621)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 2,748,995
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> (853)
<OVERDIST-NET-GAINS-PRIOR> (162,805)
<GROSS-ADVISORY-FEES> 83,045
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 0
<AVERAGE-NET-ASSETS> 18,605,038
<PER-SHARE-NAV-BEGIN> 12.48
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 1.62
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 14.21
<EXPENSE-RATIO> 0.95
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
