CMTXX Cma Treasury Fund (MM)

000 B000000 03/31/2012
000 C000000 0000869311
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 BIF TREASURY FUND
001 B000000 811-06196
001 C000000 8002217210
002 A000000 100 BELLEVUE PARKWAY
002 B000000 WILMINGTON
002 C000000 DE
002 D010000 19809
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
010 A000001 BLACKROCK ADVISORS, LLC
010 B000001 801-47710
010 C010001 WILMINGTON
010 C020001 DE
010 C030001 19809
011 A000001 BLACKROCK INVESTMENTS, LLC
011 B000001 8-48436
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10022
012 A000001 FINANCIAL DATA SERVICES, INC.
012 B000001 84-01339
012 C010001 JACKSONVILLE
012 C020001 FL
012 C030001 32246
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
014 A000001 BLACKROCK CAPITAL MARKETS, LLC
014 B000001 8-67827
014 A000002 BLACKROCK EXECUTION SERVICES
014 B000002 8-48719
014 A000003 BLACKROCK INVESTMENTS, LLC
014 B000003 8-48436
014 A000004 HARRIS WILLIAMS LLC
014 B000004 8-53380
014 A000005 PNC CAPITAL MARKETS, INC.

014 B000005 8-32493
014 A000006 PNC INVESTMENTS LLC
014 B000006 8-66195
018 000000 Y
019 A000000 Y
019 B000000 287
019 C000000 BLKRKADVSR
021 000000 0
022 A000001 BLACKROCK INVESTMENTS, LLC
022 B000001 13-3806694
022 C000001 5748103
022 D000001 5487735
023 C000000 5748103
023 D000000 5487735
024 000000 N
026 A000000 N
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027 000000 Y
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028 B020000 36
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028 B040000 417572
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028 C020000 35
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028 C040000 720151
028 D010000 464602
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028 E010000 302859
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028 E040000 431807
028 F010000 539226
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028 F040000 495505
028 G010000 2923050
028 G020000 96

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080 A000000 Federal Insurance Company
080 B000000 NAT. UNION FIRE INS. CO. OF PITTSBURGH, PA
080 C000000 37300
081 A000000 Y

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SIGNATURE NEAL J. ANDREWS
TITLE CFO