INSTITUTIONAL DAILY INCOME FUND
NSAR-B, 1998-05-28
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<PAGE>
000 B000000 03/31/98
000 C000000 0000918267
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 INSTITUTIONAL DAILY INCOME FUND
001 B000000 811-8312
001 C000000 2128305200
002 A000000 600 FIFTH AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10020
002 D020000 2302
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
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007 C010100  1
007 C020100 MONEY MARKET PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 U.S. GOVERNMENT PORTFOLIO
007 C030200 N
007 C010300  3
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A00AA01 REICH & TANG ASSET MANAGEMENT L.P.
008 B00AA01 A
008 C00AA01 801-47230
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10020
008 D04AA01 2302
011 A00AA01 REICH & TANG DISTRIBUTORS INC.
011 B00AA01 8-43429
011 C01AA01 NEW YORK
011 C02AA01 NY
011 C03AA01 10020
011 C04AA01 2302
012 A00AA01 REICH & TANG SERVICES INC.
<PAGE>
012 B00AA01 84-2007
012 C01AA01 NEW YORK
012 C02AA01 NY
012 C03AA01 10020
012 C04AA01 2302
013 A00AA01 MCGLADREY & PULLEN LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10017
015 A00AA01 INVESTORS FIDUCIARY TRUST COMPANY
015 B00AA01 C
015 C01AA01 KANSAS CITY
015 C02AA01 MO
015 C03AA01 64105
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022 C000001  27287994
022 D000001         0
022 A000002 CANADIAN IMPERIAL BANK OF COMMERCE
022 B000002 13-1942440
022 C000002  14203352
022 D000002         0
022 A000003 MORGAN (J.P.) SECURITIES INC.
022 B000003 13-3224016
022 C000003  13265467
022 D000003         0
022 A000004 GOLDMAN SACHS & CO.
022 B000004 13-5108880
022 C000004  11980692
022 D000004         0
022 A000005 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000005 13-2741729
022 C000005  10500000
022 D000005         0
022 A000006 JANNEY MONTGOMERY SCOTT INC.
<PAGE>
022 B000006 23-0731260
022 C000006    479434
022 D000006     89794
022 A000007 BANK OF AMERICA NT & SA
022 B000007 94-1687665
022 C000007    298992
022 D000007      7030
022 A000008 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000008 13-5674085
022 C000008    139459
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022 A000009 SEATTLE - NORTHWEST SECURIITES CORPORATION
022 B000009 91-1172183
022 C000009     99918
022 D000009         0
022 A000010 CLARKE (G.X.) & CO.
022 B000010 13-2969143
022 C000010     44789
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<PAGE>
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<PAGE>
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<PAGE>
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<PAGE>
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<PAGE>
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<PAGE>
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<PAGE>
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SIGNATURE   BERNADETTE N. FINN
TITLE       SECRETARY

WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>           6
<LEGEND>            The  schedule   contains   summary   financial   information
                    extracted  from  the  financial  statements  and  supporting
                    schedules  as of the end of the most  current  period and is
                    qualified in its  entirety by  reference  to such  financial
                    statements.
</LEGEND>
<CIK>               0000918267
<NAME>              Institutional Daily Income Fund
<SERIES>            U.S. Treasury Portfolio
<NUMBER>            1
<NAME>              Class A
       
<S>                               <C>    
<FISCAL-YEAR-END>             MAR-31-1998
<PERIOD-START>                APR-01-1997
<PERIOD-END>                  MAR-31-1998
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>           6
<LEGEND>            The  schedule   contains   summary   financial   information
                    extracted  from  the  financial  statements  and  supporting
                    schedules  as of the end of the most  current  period and is
                    qualified in its  entirety by  reference  to such  financial
                    statements.
</LEGEND>
<CIK>               0000918267
<NAME>              Institutional Daily Income Fund
<SERIES>            U.S. Treasury Portfolio
<NUMBER>            2
<NAME>              Class B
       
<S>                               <C>    
<FISCAL-YEAR-END>             MAR-31-1998
<PERIOD-START>                APR-01-1997
<PERIOD-END>                  MAR-31-1998
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>           6
<LEGEND>            The  schedule   contains   summary   financial   information
                    extracted  from  the  financial  statements  and  supporting
                    schedules  as of the end of the most  current  period and is
                    qualified in its  entirety by  reference  to such  financial
                    statements.
</LEGEND>
<CIK>               0000918267
<NAME>              Institutional Daily Income Fund
<SERIES>            Money Market Portfolio
<NUMBER>            3
<NAME>              Class A
       
<S>                               <C>    
<FISCAL-YEAR-END>             MAR-31-1998
<PERIOD-START>                APR-01-1997
<PERIOD-END>                  MAR-31-1998
<PERIOD-TYPE>                 12-MOS
<INVESTMENTS-AT-COST>         342051843
<INVESTMENTS-AT-VALUE>        342051843
<RECEIVABLES>                 1143099
<ASSETS-OTHER>                0
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<ACCUMULATED-NII-CURRENT>     0
<OVERDISTRIBUTION-NII>        0
<ACCUMULATED-NET-GAINS>       0
<OVERDISTRIBUTION-GAINS>      0
<ACCUM-APPREC-OR-DEPREC>      0
<NET-ASSETS>                  336549942
<DIVIDEND-INCOME>             0
<INTEREST-INCOME>             16533164
<OTHER-INCOME>                0
<EXPENSES-NET>                743096
<NET-INVESTMENT-INCOME>       15790068
<REALIZED-GAINS-CURRENT>      3299
<APPREC-INCREASE-CURRENT>     0
<NET-CHANGE-FROM-OPS>         15793367
<EQUALIZATION>                0
<DISTRIBUTIONS-OF-INCOME>     1570068
<DISTRIBUTIONS-OF-GAINS>      3299
<DISTRIBUTIONS-OTHER>         0
<NUMBER-OF-SHARES-SOLD>       1855214053
<NUMBER-OF-SHARES-REDEEMED>   1730440541
<SHARES-REINVESTED>           15031138
<NET-CHANGE-IN-ASSETS>        139804650
<ACCUMULATED-NII-PRIOR>       0
<ACCUMULATED-GAINS-PRIOR>     0
<OVERDISTRIB-NII-PRIOR>       0
<OVERDIST-NET-GAINS-PRIOR>    0
<GROSS-ADVISORY-FEES>         348323
<INTEREST-EXPENSE>            0
<GROSS-EXPENSE>               959003
<AVERAGE-NET-ASSETS>          290268883
<PER-SHARE-NAV-BEGIN>         1.00
<PER-SHARE-NII>               .05
<PER-SHARE-GAIN-APPREC>       0
<PER-SHARE-DIVIDEND>          .05
<PER-SHARE-DISTRIBUTIONS>     0
<RETURNS-OF-CAPITAL>          0
<PER-SHARE-NAV-END>           1.00
<EXPENSE-RATIO>               .45
<AVG-DEBT-OUTSTANDING>        0
<AVG-DEBT-PER-SHARE>          0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE>           6
<LEGEND>            The  schedule   contains   summary   financial   information
                    extracted  from  the  financial  statements  and  supporting
                    schedules  as of the end of the most  current  period and is
                    qualified in its  entirety by  reference  to such  financial
                    statements.
</LEGEND>
<CIK>               0000918267
<NAME>              Institutional Daily Income Fund
<SERIES>            Money Market Portfolio
<NUMBER>            4
<NAME>              Class B
       
<S>                               <C>    
<FISCAL-YEAR-END>             MAR-31-1998
<PERIOD-START>                APR-01-1997
<PERIOD-END>                  MAR-31-1998
<PERIOD-TYPE>                 12-MOS
<INVESTMENTS-AT-COST>         342051843
<INVESTMENTS-AT-VALUE>        342051843
<RECEIVABLES>                 1143099
<ASSETS-OTHER>                0
<OTHER-ITEMS-ASSETS>          386670
<TOTAL-ASSETS>                343581612
<PAYABLE-FOR-SECURITIES>      6620000
<SENIOR-LONG-TERM-DEBT>       0
<OTHER-ITEMS-LIABILITIES>     411670
<TOTAL-LIABILITIES>           7031670
<SENIOR-EQUITY>               0
<PAID-IN-CAPITAL-COMMON>      336549942
<SHARES-COMMON-STOCK>         336549942
<SHARES-COMMON-PRIOR>         196745292
<ACCUMULATED-NII-CURRENT>     0
<OVERDISTRIBUTION-NII>        0
<ACCUMULATED-NET-GAINS>       0
<OVERDISTRIBUTION-GAINS>      0
<ACCUM-APPREC-OR-DEPREC>      0
<NET-ASSETS>                  336549942
<DIVIDEND-INCOME>             0
<INTEREST-INCOME>             16533164
<OTHER-INCOME>                0
<EXPENSES-NET>                743096
<NET-INVESTMENT-INCOME>       15790068
<REALIZED-GAINS-CURRENT>      3299
<APPREC-INCREASE-CURRENT>     0
<NET-CHANGE-FROM-OPS>         15793367
<EQUALIZATION>                0
<DISTRIBUTIONS-OF-INCOME>     1570068
<DISTRIBUTIONS-OF-GAINS>      3299
<DISTRIBUTIONS-OTHER>         0
<NUMBER-OF-SHARES-SOLD>       1855214053
<NUMBER-OF-SHARES-REDEEMED>   1730440541
<SHARES-REINVESTED>           15031138
<NET-CHANGE-IN-ASSETS>        139804650
<ACCUMULATED-NII-PRIOR>       0
<ACCUMULATED-GAINS-PRIOR>     0
<OVERDISTRIB-NII-PRIOR>       0
<OVERDIST-NET-GAINS-PRIOR>    0
<GROSS-ADVISORY-FEES>         348323
<INTEREST-EXPENSE>            0
<GROSS-EXPENSE>               959003
<AVERAGE-NET-ASSETS>          290268883
<PER-SHARE-NAV-BEGIN>         1.00
<PER-SHARE-NII>               .06
<PER-SHARE-GAIN-APPREC>       0
<PER-SHARE-DIVIDEND>          .06
<PER-SHARE-DISTRIBUTIONS>     0
<RETURNS-OF-CAPITAL>          0
<PER-SHARE-NAV-END>           1.00
<EXPENSE-RATIO>               .20
<AVG-DEBT-OUTSTANDING>        0
<AVG-DEBT-PER-SHARE>          0
        

</TABLE>



                           McGLADREY & PULLEN, LLP
                   Certified Public Accountants and Consultants
                     REPORT OF CERTIFIED PUBLIC ACCOUNTANTS

The Board of Directors
Institutional Daily Income Fund - Money Market Portfolio
 and U.S. Treasury Portfolio


In  planning  and   performing   our  audit  of  the  financial   statements  of
Institutional  Daily  Income Fund - Money  Market  Portfolio  and U.S.  Treasury
Portfolio for the year ended March 31, 1998, we considered its internal control,
including  controls  over  safeguarding  securities,  in order to determine  our
auditing  procedures  for the purpose of expressing our opinion on the financial
statements  and to comply with the  requirements  of Form N-SAR,  not to provide
assurance on internal control.

The management of  Institutional  Daily Income Fund - Money Market Portfolio and
U.S. Treasury Portfolio is responsible for establishing and maintaining internal
control.  In  fulfilling  this   responsibility,   estimates  and  judgments  by
management  are  required to assess the expected  benefits and related  costs of
controls.  Generally,  controls  that are  relevant  to an audit  pertain to the
entity's objective of preparing financial  statements for external purposes that
are  fairly   presented  in  conformity  with  generally   accepted   accounting
principles.  Those controls include  safeguarding of assets against unauthorized
acquisition, use, or disposition.

Because of inherent  limitations in internal control,  errors or fraud may occur
and not be detected.  Also,  projection of any evaluation of internal control to
future periods is subject to the risk that it may become  inadequate  because of
changes in conditions or that the  effectiveness of the design and operation may
deteriorate.

Our consideration of internal control would not necessarily disclose all matters
in  internal   control  that  might  be  material   weaknesses  under  standards
established  by the  American  Institute  of  Certified  Public  Accountants.  A
material  weakness  is a  condition  in which  the  design or  operation  of any
specific  internal  control  component does not reduce to a relatively low level
the risk that  errors or  irregularities  in amounts  that would be  material in
relation to the financial statements being audited may occur and not be detected
within a timely  period by employees in the normal  course of  performing  their
assigned  functions.  However,  we noted no matters involving  internal control,
including controls over safeguarding securities, that we consider to be material
weaknesses as defined above as of March 31, 1998.

This report is intended solely for the information and use of management and the
Securities and Exchange Commission.


                                                         McGladrey & Pullen, LLP

New York, New York
April 27, 1998




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