MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
NSAR-B, 1998-06-29
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<PAGE>      PAGE  1
000 B000000 04/30/98
000 C000000 0000814079
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
001 B000000 811-5149
001 C000000 8002251576
002 A000000 ONE FINANCIAL CENTER 23RD FLOOR
002 B000000 BOSTON
002 C000000 MA
002 D010000 02111
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  5
007 C010100  1
007 C020100 MERRILL LYNCH TREASURY FUND
007 C030100 N
007 C010200  2
007 C020200 MERRILL LYNCH INSTITUTIONAL FUND
007 C030200 N
007 C010300  3
007 C020300 MERRILL LYNCH GOVERNMENT FUND
007 C030300 N
007 C010400  4
007 C020400 MERRILL LYNCH INSTITUTIONAL TAX-EXEMPT FUND
007 C030400 N
007 C010500  5
007 C020500 MERRILL LYNCH PREMIER INSTITUTIONAL FUND
007 C030500 N
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
007 C011100 11
007 C011200 12
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
<PAGE>      PAGE  2
007 C012000 20
008 A00AA01 FUND ASSET MANAGEMENT, L.P.
008 B00AA01 A
008 C00AA01 801-12485
008 D01AA01 PRINCETON
008 D02AA01 NJ
008 D03AA01 08543
008 D04AA01 9011
008 A00AA02 MERRILL LYNCH ASSET MANAGEMENT U.K. LTD.
008 B00AA02 S
008 C00AA02 801-31780
008 D01AA02 LONDON
008 D05AA02 ENGLAND
011 A00AA01 MERRILL LYNCH FUNDS DISTRIBUTOR, INC.
011 B00AA01 8-14663
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02111
011 C04AA01 2646
012 A00AA01 STATE STREET BANK AND TRUST COMPANY
012 B00AA01 85-05003
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02266
012 C04AA01 8500
013 A00AA01 DELOITTE & TOUCHE LLP
013 B01AA01 BOSTON
013 B02AA01 MA
013 B03AA01 02110
013 B04AA01 1617
014 A00AA01 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
014 B00AA01 8-7221
015 A00AA01 STATE STREET BANK AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02266
015 C04AA01 8500
015 E01AA01 X
015 A00AA02 THE BANK OF NEW YORK
015 B00AA02 S
015 C01AA02 NEW YORK
015 C02AA02 NY
015 C03AA02 10015
015 E01AA02 X
015 A00AA03 BANKERS TRUST COMPANY
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015 C02AA03 NY
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015 E01AA03 X
<PAGE>      PAGE  3
015 A00AA04 CHEMICAL BANK
015 B00AA04 S
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015 E01AA04 X
015 A00AA05 CUSTODIAL TRUST CO
015 B00AA05 S
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015 C02AA05 NY
015 C03AA05 10167
015 E01AA05 X
015 A00AA06 MORGAN GUARANTEE TRUST CO.
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015 C02AA06 NY
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018  00AA00 Y
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019 C00AA00 MERRILLLYN
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022 C000004  46809485
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022 A000005 LEHMAN BROTHERS INC.
022 B000005 13-2518466
<PAGE>      PAGE  4
022 C000005  46313056
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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
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070 D010100 N
<PAGE>      PAGE  9
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 N
070 J020100 N
070 K010100 N
070 K020100 N
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 N
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
076  000100     0.00
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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070 F010200 N
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070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 N
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<PAGE>      PAGE  14
070 K020200 N
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
046  000300 N
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<PAGE>      PAGE  18
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070 J010300 N
070 J020300 N
070 K010300 N
070 K020300 N
070 L010300 N
070 L020300 N
070 M010300 N
070 M020300 N
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300         0
071 B000300         0
071 C000300         0
071 D000300    0
072 A000300 12
072 B000300   110720
072 C000300        0
072 D000300        0
<PAGE>      PAGE  19
072 E000300        0
072 F000300     6331
072 G000300        0
072 H000300        0
072 I000300      301
072 J000300      182
072 K000300        0
072 L000300       16
072 M000300       18
072 N000300      354
072 O000300        0
072 P000300        0
072 Q000300        0
072 R000300       29
072 S000300      105
072 T000300        0
072 U000300        0
072 V000300        0
072 W000300       19
072 X000300     7355
072 Y000300     2369
072 Z000300   105734
072AA000300      197
072BB000300       84
072CC010300      217
072CC020300        0
072DD010300   105847
072DD020300        0
072EE000300        0
073 A010300   0.0530
073 A020300   0.0000
073 B000300   0.0000
073 C000300   0.0000
074 A000300    12932
074 B000300   595293
074 C000300  1500717
074 D000300        0
074 E000300        0
074 F000300        0
074 G000300        0
074 H000300        0
074 I000300        0
074 J000300        0
074 K000300        0
074 L000300     6614
074 M000300        4
074 N000300  2115560
074 O000300        0
074 P000300      354
074 Q000300        0
074 R010300        0
<PAGE>      PAGE  20
074 R020300        0
074 R030300        0
074 R040300      614
074 S000300        0
074 T000300  2114592
074 U010300  2114794
074 U020300        0
074 V010300     1.00
074 V020300     0.00
074 W000300   0.9999
074 X000300     3889
074 Y000300        0
075 A000300  1980642
075 B000300        0
076  000300     0.00
024  000400 N
025 D000401       0
025 D000402       0
025 D000403       0
025 D000404       0
025 D000405       0
025 D000406       0
025 D000407       0
025 D000408       0
028 A010400    558502
028 A020400      4251
028 A030400         0
028 A040400    440490
028 B010400   1170769
028 B020400      4829
028 B030400         0
028 B040400   1040329
028 C010400   1162211
028 C020400      5159
028 C030400         0
028 C040400    944459
028 D010400    641598
028 D020400      3771
028 D030400         0
028 D040400    929025
028 E010400    688790
028 E020400      4506
028 E030400         0
028 E040400    621096
028 F010400   1064334
028 F020400      5338
028 F030400         0
028 F040400    989908
028 G010400   5286204
028 G020400     27854
028 G030400         0
<PAGE>      PAGE  21
028 G040400   4965307
028 H000400         0
042 A000400   0
042 B000400   0
042 C000400 100
042 D000400   0
042 E000400   0
042 F000400   0
042 G000400   0
042 H000400   0
043  000400      0
044  000400   1025
045  000400 Y
046  000400 N
047  000400 Y
048  000400  0.000
048 A010400  1500000
048 A020400 0.450
048 B010400   500000
048 B020400 0.425
048 C010400        0
048 C020400 0.000
048 D010400        0
048 D020400 0.000
048 E010400        0
048 E020400 0.000
048 F010400        0
048 F020400 0.000
048 G010400        0
048 G020400 0.000
048 H010400        0
048 H020400 0.000
048 I010400        0
048 I020400 0.000
048 J010400        0
048 J020400 0.000
048 K010400  2000000
048 K020400 0.400
049  000400 N
050  000400 N
051  000400 N
052  000400 N
053 A000400 Y
053 B000400 Y
058 A000400 N
059  000400 Y
060 A000400 Y
060 B000400 Y
061  000400    25000
062 A000400 Y
062 B000400   0.0
<PAGE>      PAGE  22
062 C000400   0.0
062 D000400   0.0
062 E000400 100.0
062 F000400   0.0
062 G000400   0.0
062 H000400   0.0
062 I000400   0.0
062 J000400   0.0
062 K000400   0.0
062 L000400   0.0
062 M000400   0.0
062 N000400   0.0
062 O000400   0.0
062 P000400   0.0
062 Q000400   0.0
062 R000400   0.0
063 A000400  42
063 B000400  0.0
064 A000400 Y
064 B000400 N
070 A010400 Y
070 A020400 N
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 N
070 K010400 N
070 K020400 N
070 L010400 N
070 L020400 N
070 M010400 N
070 M020400 N
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
<PAGE>      PAGE  23
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 N
070 R020400 N
071 A000400         0
071 B000400         0
071 C000400         0
071 D000400    0
072 A000400 12
072 B000400    57941
072 C000400        0
072 D000400        0
072 E000400        0
072 F000400     6882
072 G000400        0
072 H000400        0
072 I000400      181
072 J000400      146
072 K000400        0
072 L000400       12
072 M000400       14
072 N000400      295
072 O000400        0
072 P000400        0
072 Q000400        0
072 R000400       16
072 S000400       14
072 T000400        0
072 U000400        0
072 V000400        0
072 W000400       10
072 X000400     7570
072 Y000400     3810
072 Z000400    54181
072AA000400        0
072BB000400        0
072CC010400        0
072CC020400        0
072DD010400    54173
072DD020400        0
072EE000400        0
073 A010400   0.0400
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400     1265
074 B000400        0
074 C000400  1779124
074 D000400        0
074 E000400        0
<PAGE>      PAGE  24
074 F000400        0
074 G000400        0
074 H000400        0
074 I000400        0
074 J000400    11480
074 K000400        0
074 L000400    13014
074 M000400        2
074 N000400  1804885
074 O000400        0
074 P000400      307
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400      136
074 S000400        0
074 T000400  1804442
074 U010400  1804571
074 U020400        0
074 V010400     1.00
074 V020400     0.00
074 W000400   0.9999
074 X000400     2586
074 Y000400        0
075 A000400  1535730
075 B000400        0
076  000400     0.00
024  000500 Y
025 A000501 GOLDMAN SACHS
025 B000501 13-5108880
025 C000501 D
025 D000501  330012
025 A000502 LEHMAN BROTHERS
025 B000502 13-2518466
025 C000502 D
025 D000502  234380
025 A000503 FUJI SECURITIES INC.
025 B000503 36-2880742
025 C000503 D
025 D000503  100000
025 A000504 NORMURA SECURITIES INTERNATIONAL INC
025 B000504 13-2642206
025 C000504 D
025 D000504   75000
025 A000505 MORGAN (J.P.) SECURUTIES INC
025 B000505 13-3224016
025 C000505 D
025 D000505  219884
025 A000506 CHASE SECURITIES INC
025 B000506 13-3112953
<PAGE>      PAGE  25
025 C000506 D
025 D000506   23000
025 D000507       0
025 D000508       0
028 A010500   5137205
028 A020500     23826
028 A030500         0
028 A040500   5301204
028 B010500   7917365
028 B020500     22438
028 B030500         0
028 B040500   9239216
028 C010500   8864585
028 C020500     22890
028 C030500         0
028 C040500   7174046
028 D010500   6517931
028 D020500     23188
028 D030500         0
028 D040500   6841991
028 E010500   8012293
028 E020500     24860
028 E030500         0
028 E040500   8620458
028 F010500   8207422
028 F020500     24296
028 F030500         0
028 F040500   7383601
028 G010500  44656801
028 G020500    141498
028 G030500         0
028 G040500  44560516
028 H000500         0
042 A000500   0
042 B000500   0
042 C000500 100
042 D000500   0
042 E000500   0
042 F000500   0
042 G000500   0
042 H000500   0
043  000500      0
044  000500      0
045  000500 Y
046  000500 N
047  000500 Y
048  000500  0.150
048 A010500        0
048 A020500 0.000
048 B010500        0
048 B020500 0.000
<PAGE>      PAGE  26
048 C010500        0
048 C020500 0.000
048 D010500        0
048 D020500 0.000
048 E010500        0
048 E020500 0.000
048 F010500        0
048 F020500 0.000
048 G010500        0
048 G020500 0.000
048 H010500        0
048 H020500 0.000
048 I010500        0
048 I020500 0.000
048 J010500        0
048 J020500 0.000
048 K010500        0
048 K020500 0.000
049  000500 N
050  000500 N
051  000500 N
052  000500 N
053 A000500 N
058 A000500 N
059  000500 Y
060 A000500 Y
060 B000500 Y
061  000500 10000000
062 A000500 Y
062 B000500   0.1
062 C000500  13.7
062 D000500   5.0
062 E000500   0.0
062 F000500  20.2
062 G000500   0.4
062 H000500   0.0
062 I000500  21.7
062 J000500   0.0
062 K000500   0.0
062 L000500  38.9
062 M000500   0.0
062 N000500   0.0
062 O000500   0.0
062 P000500   0.0
062 Q000500   0.0
062 R000500   0.0
063 A000500  73
063 B000500  0.0
064 A000500 N
064 B000500 N
070 A010500 Y
<PAGE>      PAGE  27
070 A020500 Y
070 B010500 N
070 B020500 N
070 C010500 N
070 C020500 N
070 D010500 N
070 D020500 N
070 E010500 N
070 E020500 N
070 F010500 N
070 F020500 N
070 G010500 N
070 G020500 N
070 H010500 N
070 H020500 N
070 I010500 N
070 I020500 N
070 J010500 N
070 J020500 N
070 K010500 N
070 K020500 N
070 L010500 Y
070 L020500 Y
070 M010500 N
070 M020500 N
070 N010500 Y
070 N020500 N
070 O010500 Y
070 O020500 N
070 P010500 Y
070 P020500 N
070 Q010500 N
070 Q020500 N
070 R010500 N
070 R020500 N
071 A000500         0
071 B000500         0
071 C000500         0
071 D000500    0
072 A000500 12
072 B000500   307744
072 C000500        0
072 D000500        0
072 E000500        0
072 F000500     8074
072 G000500        0
072 H000500        0
072 I000500       54
072 J000500      295
072 K000500        0
072 L000500       40
<PAGE>      PAGE  28
072 M000500       49
072 N000500      987
072 O000500        0
072 P000500        0
072 Q000500        0
072 R000500       43
072 S000500       19
072 T000500        0
072 U000500       43
072 V000500        0
072 W000500       24
072 X000500     9628
072 Y000500        0
072 Z000500   298116
072AA000500      703
072BB000500      145
072CC010500        0
072CC020500       13
072DD010500   298674
072DD020500        0
072EE000500        0
073 A010500   0.0550
073 A020500   0.0000
073 B000500   0.0000
073 C000500   0.0000
074 A000500     4539
074 B000500   332900
074 C000500  6357171
074 D000500        0
074 E000500        0
074 F000500        0
074 G000500        0
074 H000500        0
074 I000500        0
074 J000500     5000
074 K000500        0
074 L000500    49709
074 M000500      556
074 N000500  6749875
074 O000500   100003
074 P000500      820
074 Q000500        0
074 R010500        0
074 R020500        0
074 R030500        0
074 R040500     4529
074 S000500        0
074 T000500  6644523
074 U010500  6645473
074 U020500        0
074 V010500     1.00
<PAGE>      PAGE  29
074 V020500     0.00
074 W000500   0.9998
074 X000500      408
074 Y000500        0
075 A000500  5382504
075 B000500        0
076  000500     0.00
SIGNATURE                                                
TITLE                           
 


                               Exhibit to Item 77B



Deloitte &
   Touche LLP
- -------------        -----------------------------------------------------------
       [LOGO]        125 Summer Street                 Telephone: (617) 261-8000
                     Boston, Massachusetts 02110-1617  Facsimile: (617) 261-8111


INDEPENDENT AUDITORS' REPORT


To the Trustees and Shareholders of
  Merrill Lynch Funds for Institutions Series:

In planning and  performing  our audits of the  financial  statements of Merrill
Lynch  Funds for  Institutions  Series  (consisting  of  Merrill  Lynch  Premier
Institutional  Fund, Merrill Lynch  Institutional Fund, Merrill Lynch Government
Fund,  Merrill Lynch Treasury Fund, and Merrill Lynch  Institutional  Tax-Exempt
Fund) (the  "Funds")  for the year ended April 30, 1998 (on which we have issued
our report dated May 28, 1998),  we considered its internal  control,  including
control  activities  for  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, and not to provide
assurance on the Funds' internal control.

The  management of the Funds 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  the   safeguarding  of  assets  against
unauthorized acquisition, use or disposition.

Because of inherent  limitations  in any 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 the Funds' 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 one or
more of the internal  control  components  does not reduce to a  relatively  low
level the risk  that  errors  or fraud 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 the Funds' internal
control and its operation,  including controls for safeguarding securities, that
we consider to be material weaknesses as defined above as of April 30, 1998.

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


/s/  Deloitte & Touche LLP


May 28, 1998


- ---------------
Deloitte Touche
Tohmatsu
International
- ---------------




                               Exhibit to Item 77P

                           MERRILL LYNCH TREASURY FUND

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            ------    ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
01/21/98  GSI   P    U.S. Treasury Strip             11.00MM  SALOMON BROTHERS, INC.       5.1130  USTS  5/15/98  ST NR
01/22/98             due 05/15/98                             AUBREY G LANSTON & CO INC.   5.1130  USTS  5/15/98  ST NR
                     @ 5.1640% NR

01/21/98  GSI   S    U.S. Treasury Bill              10.00MM  AUBREY G LANSTON & CO INC.   5.0000  USTE  2/5/98  TB NR
01/23/98             due 02/05/98                             DEUTSCHE MORGAN GRENFELL     4.9900  USTE  2/5/98  TB NR
                     @ 4.9900% NR

01/22/98  GSI   P    U.S. Treasury Strip             10.00MM  DEUTSCHE MORGAN GRENFELL     5.1260  USTS  5/15/98  ST NR
01/23/98             due 05/15/98                             AUBREY G LANSTON & CO INC.   5.1170  USTS  5/15/98  ST NR
                     @ 5.1260% NR
</TABLE>


                                       10


<PAGE>


                               Exhibit to Item 77P

                           MERRILL LYNCH INSTITUTIONAL

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
11/14/97  MMI   P    American Honda Finance Co       30.00MM  LEHMAN BROS. INC./LCPI       5.7000  American Honda Finance Co CP FT
11/14/97             due 02/10/98                             JP MORG. SEC/MORG. GUAR TR   5.7100  Toshiba American, Inc. CP FT
                     @ 5.7200% FT

01/05/98  MMI   P    Countrywide Home Loans Inc     100.00MM  GOLDMAN SACHS & COMPANY      5.5800  Countrywide Home Loans Inc CP FT
01/05/98             due 02/27/98                             LEHMAN BROS. INC./LCPI       5.5700  Countrywide Home Loans Inc CP FT
                     @ 5.6000% FT

01/06/98  MMI   P    Lexington Parker Capital        26.50MM  GOLDMAN SACHS & COMPANY      5.5300  Lexington Parker Capital CP FT
01/06/98             due 03/02/98                             JP MORG. SEC/MORG. GUAR TR   5.5300  Lexington Parker Capital CP FT
                     @ 5.5800% FT

01/08/98  MMI   P    Bank of America NT & SA CD      25.00MM  GOLDMAN SACES & COMPANY      5.6200  Bank of America NT & SA CD FT
01/12/98             cpn 5.6000 due 01/12/99                  LEHMAN BROS. INC./LCPI       5.6300  Bank of America NT & SA CD FT
                     dtd 01/12/980 5.6500% FT

01/15/98  MMI   P    National City Bank-(KT) VD      25.00MM  CREDIT SUISSE FIRST BOSTON   5.5040  National City Bank - (KT) VD FT
01/20/98             cpn 5.4830 due 01/20/99                  GOLDMAN SACES & COMPANY      5.4830  Huntington National VD FT
                     dtd 01/20/980 5.5350% FT

01/26/98  GSI   P    Student Loan Mrktng. Assn.      40.00MM  GOLDMAN SACHS & COMPANY      5.5990  Student Loan Mrktng. Assn. AF NR
02/02/98             cpn 5.6340 due 02/02/99                  CREDIT SUISSE FIRST BOSTON   5.6290  Student Loan Mrktng. Assn. AF NR
                     dtd 02/02/980 5.6590% NR

01/27/98  MMI   P    Diageo Capital PLC CP           70.00MM  LEHMAN BROS. INC./LCPI       5.4600  Diageo Capital PLC CP FT
01/28/98             due 03/27/98                             JP MDRG. SEC/MORG. GUAR TR   5.4600  Diageo Capital PLC CP FT
                     @ 5.4800% FT
</TABLE>


                                       20


<PAGE>


                               Exhibit to Item 77P

                           MERRILL LYNCH INSTITUTIONAL

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
02/06/98  MMI   P    Canadian Imper. Bk of Comm YD   50.00MM  CREDIT SUISSE FIRST BOSTON   5.6000  Deutsche Bank A.G. YD FT
02/10/98             cpn 5.5500 due 02/10/99                  BZW SECUR. INC/BARCLAYS BK   5.5900  Canadian Imper. Bk of Comm YD FT
                     dtd 02/10/980 5.6000% FT

02/18/98  MMI   S    American Honda Finance Co. CP   25.60MM  CREDIT SUISSE FIRST BOSTON   5.6000  American Honda Finance Co. CP FT
02/18/98             due 02/23/98                             LEHMAN BROS. INC./LCPI       5.6200  American Honda Finance Co. CP FT
                     @ 5.5800% FT

02/18/98  MMI   P    American Honda Finance Co. CP   39.00MM  CREDIT SUISSE FIRST BOSTON   5.4900  American Honda Finance Co. CP FT
02/18/98             due 05/21/98                             LEHMAN BROS. INC./LCPI       5.4600  American Honda Finance Co. CP FT
                     @ 5.5200% FT

02/18/98  MMI   S    American Honda Finance Co. CP   40.00MM  CREDIT SUISSE FIRST BOSTON   5.6000  Amercian Honda Finance Co. CP FT
02/18/98             due 02/25/98                             LEHMAN BROS. INC./LCPI       5.6200  American Honda Finance Co. CP FT
                     @ 5.5800% FT

02/18/98  MMI   P    American Honda Finance Co. CP   11.00MM  CREDIT SUISSE FIRST BOSTON   5.4900  American Honda Finance Co. CP FT
02/18/98             due 05/11/98                             LEHMAN BROS. INC./LCPI       5.4600  American Honda Finance Co. CP FT
                     @ 5.5200% FT

02/25/98  MMI   S    Lexington Parker Cap. Co. CP    26.50MM  MORGAN STANLEY & CO, INC.    5.5600  Lexington Parker Cap. Co. CP FT
02/25/98             due 03/02/98                             CREDIT SUISSE FIRST BOSTON   5.5600  Lexington Parker Cap. Co. CP FT
                     @ 5.5600% FT

02/25/98  MMI   P    Lexington Parker Cap. Co. CP    26.50MM  MORGAN STANLEY & CO, INC.    5.5000  Lexington Parker Cap. Co. CP FT
02/26/98             due 05/29/98                             CREDIT SUISSE FIRST BOSTON   5.5200  Lexington Parker Cap. Co. CP FT
                     @ 5.5200% FT

03/17/98  MMI   P    Lexington Parker Cap. Co. CP    49.60MM  CREDIT SUISSE FIRST BOSTON   5.5200  Lexington Parker Cap. Co. CP FT
03/17/98             due 06/09/98                             MORGAN STANLEY & CO, INC.    5.5200  Lexington Parker Cap. Co. CP FT
                     @ 5.5400% FT

03/17/98  MMI   P    Fleet National Bank N.A. VD     50.00MM  GOLDMAN SACHS & COMPANY      5.6160  Fleet National Bank N.A. VD FT
03/19/98             cpn 5.5650 due 03/19/99                  LEHMAN BROS. INC./LCPI       5.6110  Fleet National Bank N.A. VD FT
                     dtd 03/19/980 5.6200% FT

04/02/98  MMI   P    Lexington Parker Cap. Co. CP    50.00MM  CREDIT SUISSE FIRST BOSTON   5.5400  Lexington Parker Cap. Co. CP FT
04/02/98             due 06/05/98                             MORGAN STANLEY & CO, INC.    5.5400  Lexington Parker Cap. Co. CP FT
                     @ 5.5600% FT

04/14/98  MMI   P    Norddeutsche Landes. Gir. YD    25.00MM  GOLDMAN SACES & COMPANY      5.7600  Deutsche Bank A.G.- YD FT
04/16/98             cpn 5.7200 due 04/16/99                  JP MORG. SEC/MORG. GUAR TR   5.7500  Canadian Imper. Bk of Comm YD FT
                     dtd 04/16/980 5.7600% FT
</TABLE>


                                       15


<PAGE>


                               Exhibit to Item 77P

                           MERRILL LYNCH INSTITUTIONAL

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
04/16/98  MMI   P    Republic Indus. Fndg. Co. CP   49.30MM   CREDIT SUISSE FIRST BOSTON   5.5300  Republic Indus. Fndg. Co. CP FT
04/16/98             due 05/29/98                             CHASE SECURITIES, INC.       5.S300  Republic Indus. Fndg. Co. CP FT
                     @ 5.5300% FT
</TABLE>


                                       16


<PAGE>


                               Exhibit to Item 77P

                               MERRILL LYNCH GOVT

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
01/20/98  GSI   P    Federal Home Loan Mrtg. Co AF   50.00MM  LEHMAN BROS. INC./LCPI       5.4750  Federal Home Loan Mrtg. Co AF NR
01/26/98             cpn 5.4250 due 01/27/98                  JP MORG. SEC/MORG. GUAR TR   5.4750  Federal Home Loan Mrtg. Co AF NR
                     dtd 01/26/98@ 5.4960% NR

01/28/98  GSI   P    Student Loan Mrktng. Assn. AF   10.00MM  GOLDMAN SACHS & COMPANY      5.6080  Federal Natl. Mrtg. Assn. AF NR
02/04/98             cpn 5.6830 due 02/04/00                  CREDIT SUISSE FIRST BOSTON   5.6690  Student Loan Mrktng. Aasn. AF NR
                     dtd 02/04/98@ 5.7080% NR
</TABLE>


                                       12


<PAGE>


                               Exhibit to Item 77P

                               MERRILL LYNCH GOVT

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
02/11/98  GSI   S    Federal Home Loan Mrtg. Co DN   50.00MM  JP MORG. SEC/MORG. GUAR TR   5.3850  Federal Home Loan Mrtg. Co DN YR
02/12/98             due 04/24/98                             HSBC SECURITIES, INC.        5.3900  Federal Home Loan Mrtg. Co DN YR
                     @ 5.3700% NR

03/20/98  GSI   P    Federal Natl. Mrtg. Assn. AC    20.00MM  GOLDMAN SACHS & COMPANY      5.5860  Federal Natl. Mrtg. Assn. AC NR
03/26/98             cpn 5.5200 due 03/26/99                  DONALDSON, LUFKIN & JEN      5.5970  Federal Natl. Mrtg. Assn. AC NR
                     dtd 03/26/98@ 5.6020% NR
</TABLE>


                                       9


<PAGE>


                               Exhibit to Item 77P

                          ML PREMIER INSTITUTIONAL FUND

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
11/13/97  MMI   P    Altas Funding Corporation CP    49.50MM  LEHMAN BROS. INC./LCPI       5.8000  Atlas Funding Corporation CP FT
11/17/97             due 12/15/97                             GOLDMAN SACHS & COMPANY      5.8000  Atlas Funding Corporation CP FT
                     @ 5.8000% FT

11/14/97  MMI   P    American Honda Finance Co CP    30.00MM  LEHMAN BROS. INC./LCPI       5.7000  American Honda Finance Co CP FT
11/14/97             due 02/10/98                             JP MORG. SEC/MORG. GUAR TR   5.7100  Toshiba America, Inc. CP FT
                     @ 5.7200% FT

01/06/98  MMI   P    Lexington Parker Capital CP     69.30MM  GOLDMAN SACHS & COMPANY      5.5300  Lexington Parker Capital CP FT
01/06/98             due 03/02/98                             JP MORG. SEC/MORG. GUAR TR   5.5300  Lexington Parker Capital CP FT
                     @ 5.5800% FT

01/08/98  MMI   P    Bank of America NT & SA CD      25.00MM  GOLDMAN SACHS & COMPANY      5.6200  Bank of America NT & SA CD FT
01/12/98             cpn 5.6000 due 01/12/99                  LEHMAN BROS. INC./LCPI       5.6300  Bank of America NT & SA CD FT
                     dtd 01/12/98e 5.6500% FT

01/13/98  GSI   S    Federal Home Loan Bank DN       50.00MM  CREDIT SUISSE FIRST BOSTON   5.l900  Federal Home Loan Bank DN NR
01/14/98             due 07/10/98                             GOLDMAN SACES & COMPANY      5.2000  Federal Natl. Mrtg. Assn. DN NR
                     @ 5.1700% NR

01/15/98  MMI   P    American Honda Finance Co. MV   25.00MM  CREDIT SUISSE FIRST BOSTON   5.4120  American Honda Finance Co. MV FT
01/20/98             cpn 5.8220 due 04/06/98                  GOLDMAN SACHS & COMPANY      5.4120  American Honda Finance Co. MV FT
                     dtd 0l/0S/98Q 5.6220% FT

01/15/98  MMI   P    National City Bank - (KT) VD    25.00MM  CREDIT SUISSE FIRST BOSTON   5.5040  National City Bank - (KT) VD FT
01/20/98             cpn 5.4830 due 01/20/99                  GOLDMAN SACHS & COMPANY      5.4830  Huntington National VD FT
                     dtd 01/20/98Q 5.5350% FT

01/20/98  MMI   P    Allomon Funding Corp. CP        19.90MM  LEHMAN BROS. INC./LCPI       5.4500  Allomon Funding Corp. CP FT
01/20/98             due 04/13/98                             SALOMON BROTHERS. INC.       5.4500  Allomon Funding Corp. CP FT
                     @ 5.4500% FT

01/20/98  GSI   P    U.S. Treasury Note              10.00MM  LEHMAN BROS. INC./LCPI       5.3740  USTN 12/31/97 5.625  TN NR
01/21/98             cpn 5.6250 due 12/31/99                  JP MORG. SEC/MORG. GUAR TR   5.3740  USTN 12/31/97 5.625  TN NR
                     dtd 12/31/970 5.3740% NR

01/26/98  GSI   P    Student Loan Mrktng. Assn. AF   60.00MM  GOLDMAN SACHS & COMPANY      5.5990  Student Loan Mrktng. Assn. AF NR
02/02/98             cpn 5.6340 due 02/02/00                  CREDIT SUISSE FIRST BOSTON   5.6290  Student Loan Mrktng. Assn. AF NR
                     dtd 02/02/980 5.6590% NR

01/27/98  MMI   P    Diageo Capital PLC CP           70.00MM  LEHMAN BROS. INC./LCPI       5.4600  Diageo Capital PLC CP FT
01/28/98             due 03/27/98                             JP MORG. SEC/MORG. GUAR TR   5.4600  Diageo Capital PLC CP FT
                     @ 5.4800% FT
</TABLE>


                                       17


<PAGE>


                               Exhibit to Item 77P

                         ML PREMIER INSTITUTIONAL FUND

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
01/28/98  GSI   P    Student Loan Mrktng. Assn. AF   76.00MM  GOLDMAN SACHS & COMPANY      5.6080  Federal Natl. Mrtg. Assn. AF NR
02/04/98             cpn 5.6830 due 02/04/00                  CREDIT SUISSE FIRST BOSTON   5.6690  Student Loan Mrktng. Assn. AF NR
                     dtd 02/04/98@ 5.7080% NR
</TABLE>


                                       18


<PAGE>


                               Exhibit to Item 77P

                          ML PREMIER INSTITUTIONAL FUND

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
02/05/98  MMI   P    Societe Generale, NY YD         25.00MM  CREDIT SUISSE FIRST BOSTON   5.5900  Societe Generale, NY YD FT
02/09/98             cpn 5.5500 due 02/09/99                  GOLDMAN SACHS & COMPANY      5.5900  Societe Generale, NY YD FT
                     dtd 02/09/980 5.6000% FT

02/06/98  MMI   P    Societe Generale, NY YD         25.00MM  CREDIT SUISSE FIRST BOSTON   5.6000  Deutsche Bank A.G. YD FT
02/10/98             cpn 5.5800 due 02/10/99                  BZW SECUR. INC/BARCLAYS BK   5.5900  Canadian Imper. Bk of Comm VD FT
                     dtd 02/10/980 5.6100% FT

02/25/98  MMI   S    Lexington Parker Cap. Co. CP    69.30MM  CREDIT SUISSE FIRST BOSTON   5.5600  Lexington Parker Cap. Co. CP FT
02/25/98             due 03/02/98                             MORGAN STANLEY & CO, INC.    5.5600  Lexington Parker Cap. Co. CP FT
                     @ 5.5600% FT

02/25/98  MMI   P    Lexington Parker Cap. Co. CP    69.30MM  MORGAN STANLEY & CO, INC.    5.5000  Lexingotn Parker Cap. Co. CP FT
02/26/98             due 05/29/98                             CREDIT SUISSE FIRST BOSTON   5.5000  Lexington Parker Cap. Co. CP FT
                     @ 5.5200% FT

02/26/98  MMI   S    Diageo Capital PLC CP           70.00MM  GOLDMAN SACHS & COMPANY      5.5700  Diageo Capital PLC CP FT
02/26/98             due 03/27/98                             LEHMAN BROS. INC./LCPI       5.6000  Diageo Capital PLC CP FT
                     @ 5.5500% FT

02/27/98  MMI   P    Banner Receivables Corp. CP     36.10MM  JP MORG. SEC/MORG. GUAR TR   5.7500  Banner Receivables Corp. CP FT
02/27/98             due 05/01/98                             MORGAN STANLEY & CO, INC.    5.8000  Banner Receivables Corp. CP FT
                     @ 5.8300% FT

03/16/98  MMI   P    Bankers Trust Company VD        75.00MM  CREDIT SUISSE FIRST BOSTON   5.6040  Bankers Trust Company VD FT
03/18/98             cpn 5.5730 due 03/18/99                  GOLDMAN SACHS & COMPANY      5.6090  Bankers Trust Company VD FT
                     dtd 03/18/980 5.6140% FT

03/18/98  MMI   P    Student Loan Mrktng Assoc. AF   30.00MM  GOLDMAN SACHS & COMPANY      5.5870  Student Loan Mrktng Assoc. AF NR
03/19/98             cpn 5.3380 due 08/02/99                  LEHMAN BROS. INC./LCPI       5.5770  Student Loan Mrktng Assoc. AF NR
                     dtd 08/02/940 5.5920% NR

03/25/98  MMI   P    Deutsche Bank A.G. YD           50.00MM  CREDIT SUISSE FIRST BOSTON   5.7200  Deutsche Bank A.G. YD FT
03/26/98             cpn 5.6700 due 03/26/99                  DEUTSCHE MORGAN GRENFELL     5.7000  Deutsche Bank A.G. YD FT
                     dtd 03/26/980 5.7200% FT

04/02/98  MMI   P    Lexington Parker Cap. Co. CP    76.30MM  CREDIT SUISSE FIRST BOSTON   5.5400  Lexington Parker Cap. Co. CP FT
04/02/98             due 06/05/98                             MORGAN STANLEY & CO, INC.    5.5400  Lexington Parker Cap. Co. CP FT
                     @ 5.5600% FT

04/02/98  MMI   P    Lexington Parker Cap. Co. CP    80.50MM  MORGAN STANLEY & CO, INC.    5.5500  Park Ave Receivables CP FT
04/02/98             due 05/12/98                             CREDIT SUISSE FIRST BOSTON   5.5400  Lexington Parker Cap. Co. CP FT
                     @ 5.5600% FT
</TABLE>


                                       11


<PAGE>


                               Exhibit to Item 77P

                          ML PREMIER INSTITUTIONAL FUND

                                 TRADING VOLUME


<TABLE>
<CAPTION>
Trade     Sub
Settle    Code  P/S       Security                  Amount    Competitive Broker           Prices             Security
- --------  ----  ---  -------------------            -------   ----------------------       ------  ---------------------------------
<S>       <C>   <C>  <C>                            <C>       <C>                          <C>     <C>
04/03/98  MMI   P    Bankers Trust Company CD        25.00MM  JP MORG. SEC/MORG. GUAR YR   5.6500  Bankers Trust Company CD FT
04/06/98             cpn 5.6800 due 04/06/99                  GOLDMAN SACHS & COMPANY      5.6400  Bankers Trust Company CD FT
                     dtd 04/06/980 5.6600% FT
</TABLE>


                                       12



<TABLE> <S> <C>


<ARTICLE>                     6
<CIK>                         0000814079
<NAME>                        MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
<SERIES>
   <NUMBER>                   1
   <NAME>                     MERILL LYNCH TREASURY FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              APR-30-1998
<PERIOD-START>                                 MAY-01-1997
<PERIOD-END>                                   APR-30-1998
<INVESTMENTS-AT-COST>                            743874141
<INVESTMENTS-AT-VALUE>                           744813967
<RECEIVABLES>                                     14452318
<ASSETS-OTHER>                                      347126
<OTHER-ITEMS-ASSETS>                                     0
<TOTAL-ASSETS>                                   759613411
<PAYABLE-FOR-SECURITIES>                                 0
<SENIOR-LONG-TERM-DEBT>                                  0
<OTHER-ITEMS-LIABILITIES>                           416553
<TOTAL-LIABILITIES>                                 416553
<SENIOR-EQUITY>                                          0
<PAID-IN-CAPITAL-COMMON>                         758257032
<SHARES-COMMON-STOCK>                            758257032
<SHARES-COMMON-PRIOR>                            611790184
<ACCUMULATED-NII-CURRENT>                                0
<OVERDISTRIBUTION-NII>                                   0
<ACCUMULATED-NET-GAINS>                                  0
<OVERDISTRIBUTION-GAINS>                                 0
<ACCUM-APPREC-OR-DEPREC>                            939826
<NET-ASSETS>                                     759196858
<DIVIDEND-INCOME>                                        0
<INTEREST-INCOME>                                 35145485
<OTHER-INCOME>                                           0
<EXPENSES-NET>                                     1703082
<NET-INVESTMENT-INCOME>                           33442403
<REALIZED-GAINS-CURRENT>                            384816
<APPREC-INCREASE-CURRENT>                           886152
<NET-CHANGE-FROM-OPS>                             34713371
<EQUALIZATION>                                           0
<DISTRIBUTIONS-OF-INCOME>                         33827219
<DISTRIBUTIONS-OF-GAINS>                            465733
<DISTRIBUTIONS-OTHER>                                    0
<NUMBER-OF-SHARES-SOLD>                         4496611001
<NUMBER-OF-SHARES-REDEEMED>                     4381758509
<SHARES-REINVESTED>                               31614356
<NET-CHANGE-IN-ASSETS>                           146466848
<ACCUMULATED-NII-PRIOR>                                  0
<ACCUMULATED-GAINS-PRIOR>                                0
<OVERDISTRIB-NII-PRIOR>                                  0
<OVERDIST-NET-GAINS-PRIOR>                               0
<GROSS-ADVISORY-FEES>                              2294733
<INTEREST-EXPENSE>                                       0
<GROSS-EXPENSE>                                    2677351
<AVERAGE-NET-ASSETS>                             660231801
<PER-SHARE-NAV-BEGIN>                                 1.00
<PER-SHARE-NII>                                       .051
<PER-SHARE-GAIN-APPREC>                               .000
<PER-SHARE-DIVIDEND>                                  .051
<PER-SHARE-DISTRIBUTIONS>                                0
<RETURNS-OF-CAPITAL>                                     0
<PER-SHARE-NAV-END>                                   1.00
<EXPENSE-RATIO>                                       .026
<AVG-DEBT-OUTSTANDING>                                   0
<AVG-DEBT-PER-SHARE>                                     0
        


</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<CIK>                         0000814079
<NAME>                        MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
<SERIES>
   <NUMBER>                   2
   <NAME>                     MERRILL LYNCH INSTITUTIONAL FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              APR-30-1998
<PERIOD-START>                                 MAY-01-1997
<PERIOD-END>                                   APR-30-1998
<INVESTMENTS-AT-COST>                           7311072749
<INVESTMENTS-AT-VALUE>                          7309802890
<RECEIVABLES>                                     61766446
<ASSETS-OTHER>                                     5192885
<OTHER-ITEMS-ASSETS>                                     0
<TOTAL-ASSETS>                                  7376762221
<PAYABLE-FOR-SECURITIES>                                 0
<SENIOR-LONG-TERM-DEBT>                                  0
<OTHER-ITEMS-LIABILITIES>                          4337274
<TOTAL-LIABILITIES>                                4337274
<SENIOR-EQUITY>                                          0
<PAID-IN-CAPITAL-COMMON>                        7373694806
<SHARES-COMMON-STOCK>                           7373694806
<SHARES-COMMON-PRIOR>                           6201308027
<ACCUMULATED-NII-CURRENT>                                0
<OVERDISTRIBUTION-NII>                                   0
<ACCUMULATED-NET-GAINS>                                  0
<OVERDISTRIBUTION-GAINS>                                 0
<ACCUM-APPREC-OR-DEPREC>                          (1269859)
<NET-ASSETS>                                    7372424947
<DIVIDEND-INCOME>                                        0
<INTEREST-INCOME>                                374545277
<OTHER-INCOME>                                           0
<EXPENSES-NET>                                    16501786
<NET-INVESTMENT-INCOME>                          358043491
<REALIZED-GAINS-CURRENT>                            235380
<APPREC-INCREASE-CURRENT>                          2160230
<NET-CHANGE-FROM-OPS>                            360439101
<EQUALIZATION>                                           0
<DISTRIBUTIONS-OF-INCOME>                        358278871
<DISTRIBUTIONS-OF-GAINS>                            467608
<DISTRIBUTIONS-OTHER>                                    0
<NUMBER-OF-SHARES-SOLD>                        42976137621
<NUMBER-OF-SHARES-REDEEMED>                    42118189627
<SHARES-REINVESTED>                              314438784
<NET-CHANGE-IN-ASSETS>                          1172386778
<ACCUMULATED-NII-PRIOR>                                  0
<ACCUMULATED-GAINS-PRIOR>                                0
<OVERDISTRIB-NII-PRIOR>                                  0
<OVERDIST-NET-GAINS-PRIOR>                               0
<GROSS-ADVISORY-FEES>                             21807793
<INTEREST-EXPENSE>                                       0
<GROSS-EXPENSE>                                   25120800
<AVERAGE-NET-ASSETS>                            6594389628
<PER-SHARE-NAV-BEGIN>                                 1.00
<PER-SHARE-NII>                                       .054
<PER-SHARE-GAIN-APPREC>                               .000
<PER-SHARE-DIVIDEND>                                  .054
<PER-SHARE-DISTRIBUTIONS>                                0
<RETURNS-OF-CAPITAL>                                     0
<PER-SHARE-NAV-END>                                   1.00
<EXPENSE-RATIO>                                        .25
<AVG-DEBT-OUTSTANDING>                                   0
<AVG-DEBT-PER-SHARE>                                     0
        


</TABLE>

<TABLE> <S> <C>


<ARTICLE>                    6
<CIK>                        0000814079
<NAME>                       MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
<SERIES>
   <NUMBER>                  3
   <NAME>                    MERRILL LYNCH GOVERNMENT FUND
       
<S>                          <C>
<PERIOD-TYPE>                12-MOS
<FISCAL-YEAR-END>                              APR-30-1998
<PERIOD-START>                                 MAY-1-1997
<PERIOD-END>                                   APR-30-1998
<INVESTMENTS-AT-COST>                          2,096,211,463
<INVESTMENTS-AT-VALUE>                         2,096,009,566
<RECEIVABLES>                                  6,613,612
<ASSETS-OTHER>                                 12,936,329
<OTHER-ITEMS-ASSETS>                           0
<TOTAL-ASSETS>                                 2,115,559,507
<PAYABLE-FOR-SECURITIES>                       0
<SENIOR-LONG-TERM-DEBT>                        0
<OTHER-ITEMS-LIABILITIES>                      967,078
<TOTAL-LIABILITIES>                            967,078
<SENIOR-EQUITY>                                0
<PAID-IN-CAPITAL-COMMON>                       2,114,794,326
<SHARES-COMMON-STOCK>                          2,114,794,326
<SHARES-COMMON-PRIOR>                          2,017,817,815
<ACCUMULATED-NII-CURRENT>                      0
<OVERDISTRIBUTION-NII>                         0
<ACCUMULATED-NET-GAINS>                        0
<OVERDISTRIBUTION-GAINS>                       0
<ACCUM-APPREC-OR-DEPREC>                       (201,897)
<NET-ASSETS>                                   2,114,592,429
<DIVIDEND-INCOME>                              0
<INTEREST-INCOME>                              110,719,788
<OTHER-INCOME>                                 0
<EXPENSES-NET>                                 4,986,047
<NET-INVESTMENT-INCOME>                        105,733,741
<REALIZED-GAINS-CURRENT>                       113,052
<APPREC-INCREASE-CURRENT>                      216,971
<NET-CHANGE-FROM-OPS>                          106,063,764
<EQUALIZATION>                                 0
<DISTRIBUTIONS-OF-INCOME>                      105,846,793
<DISTRIBUTIONS-OF-GAINS>                       196,857
<DISTRIBUTIONS-OTHER>                          0
<NUMBER-OF-SHARES-SOLD>                        11,216,903,849
<NUMBER-OF-SHARES-REDEEMED>                    11,220,047,484
<SHARES-REINVESTED>                            100,120,146
<NET-CHANGE-IN-ASSETS>                         96,976,511
<ACCUMULATED-NII-PRIOR>                        0
<ACCUMULATED-GAINS-PRIOR>                      0
<OVERDISTRIB-NII-PRIOR>                        0
<OVERDIST-NET-GAINS-PRIOR>                     0
<GROSS-ADVISORY-FEES>                          6,330,489
<INTEREST-EXPENSE>                             0
<GROSS-EXPENSE>                                7,355,251
<AVERAGE-NET-ASSETS>                           1,980,642,358
<PER-SHARE-NAV-BEGIN>                          1.00
<PER-SHARE-NII>                                .053
<PER-SHARE-GAIN-APPREC>                        .000
<PER-SHARE-DIVIDEND>                           .053
<PER-SHARE-DISTRIBUTIONS>                      0
<RETURNS-OF-CAPITAL>                           0
<PER-SHARE-NAV-END>                            1.00
<EXPENSE-RATIO>                                .25
<AVG-DEBT-OUTSTANDING>                         0
<AVG-DEBT-PER-SHARE>                           0
        


</TABLE>

<TABLE> <S> <C>


<ARTICLE>                    6
<CIK>                        0000814079
<NAME>                       MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
<SERIES>
   <NUMBER>                  4
   <NAME>                    MERRILL LYNCH INSTITUTIONAL TAX-EXEMPT FUND
       
<S>                          <C>
<PERIOD-TYPE>                12-MOS
<FISCAL-YEAR-END>                              APR-30-1998
<PERIOD-START>                                 MAY-1-1997
<PERIOD-END>                                   APR-30-1998
<INVESTMENTS-AT-COST>                          1,779,123,910
<INVESTMENTS-AT-VALUE>                         1,779,123,910
<RECEIVABLES>                                  24,493,795
<ASSETS-OTHER>                                 1,266,766
<OTHER-ITEMS-ASSETS>                           0
<TOTAL-ASSETS>                                 1,804,884,471
<PAYABLE-FOR-SECURITIES>                       0
<SENIOR-LONG-TERM-DEBT>                        0
<OTHER-ITEMS-LIABILITIES>                      442,862
<TOTAL-LIABILITIES>                            442,862
<SENIOR-EQUITY>                                0
<PAID-IN-CAPITAL-COMMON>                       1,804,571,031
<SHARES-COMMON-STOCK>                          1,804,571,031
<SHARES-COMMON-PRIOR>                          1,003,777,618
<ACCUMULATED-NII-CURRENT>                      0
<OVERDISTRIBUTION-NII>                         0
<ACCUMULATED-NET-GAINS>                        0
<OVERDISTRIBUTION-GAINS>                       0
<ACCUM-APPREC-OR-DEPREC>                       (129,422)
<NET-ASSETS>                                   1,804,441,609
<DIVIDEND-INCOME>                              0
<INTEREST-INCOME>                              57,940,736
<OTHER-INCOME>                                 0
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<EXPENSE-RATIO>                                .24
<AVG-DEBT-OUTSTANDING>                         0
<AVG-DEBT-PER-SHARE>                           0
        


</TABLE>

<TABLE> <S> <C>


<ARTICLE>                    6
<CIK>                        0000814079
<NAME>                       MERRILL LYNCH FUNDS FOR INSTITUTIONS SERIES
<SERIES>
   <NUMBER>                  5
   <NAME>                    MERRILL LYNCH PREMIER INSTITUTIONAL FUND
       
<S>                          <C>
<PERIOD-TYPE>                12-MOS
<FISCAL-YEAR-END>                              APR-30-1998
<PERIOD-START>                                 JAN-27-1997
<PERIOD-END>                                   APR-30-1998
<INVESTMENTS-AT-COST>                          6,691,020,817
<INVESTMENTS-AT-VALUE>                         6,690,070,829
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<TOTAL-ASSETS>                                 6,749,875,223
<PAYABLE-FOR-SECURITIES>                       100,003,356
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<OTHER-ITEMS-LIABILITIES>                      5,349,234
<TOTAL-LIABILITIES>                            105,352,590
<SENIOR-EQUITY>                                0
<PAID-IN-CAPITAL-COMMON>                       6,645,472,621
<SHARES-COMMON-STOCK>                          6,645,472,621
<SHARES-COMMON-PRIOR>                          2,824,133,069
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<ACCUM-APPREC-OR-DEPREC>                       (949,988)
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<DIVIDEND-INCOME>                              0
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<REALIZED-GAINS-CURRENT>                       558,082
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<EQUALIZATION>                                 0
<DISTRIBUTIONS-OF-INCOME>                      298,673,725
<DISTRIBUTIONS-OF-GAINS>                       702,935
<DISTRIBUTIONS-OTHER>                          0
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<NUMBER-OF-SHARES-REDEEMED>                    77,301,915,817
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<GROSS-EXPENSE>                                9,627,769
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<PER-SHARE-NAV-BEGIN>                          1.00
<PER-SHARE-NII>                                .055
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<EXPENSE-RATIO>                                .18
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</TABLE>


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