PAGE 1
000 A000000 06/30/2013
000 C000000 0001308927
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 Eaton Vance Tax-Managed Buy-Write Income Fund
001 B000000 811-21676
001 C000000 6174828260
002 A000000 TWO INTERNATIONAL PLACE
002 B000000 Boston
002 C000000 MA
002 D010000 02110
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
008 A000001 Eaton Vance Management
008 B000001 A
008 C000001 801-15930
008 D010001 Boston
008 D020001 MA
008 D030001 02110
008 A000002 PARAMETRIC PORTFOLIO ASSOCIATES
008 B000002 S
008 C000002 801-60485
008 D010002 SEATTLE
008 D020002 WA
008 D030002 98109
010 A000001 Eaton Vance Management
010 B000001 801-15930
010 C010001 Boston
010 C020001 MA
010 C030001 02110
012 A000001 American Stock Transfer & Trust Company
012 B000001 84-00416
012 C010001 New York
012 C020001 NY
012 C030001 10038
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
014 A000001 Eaton Vance Distributors, Inc.
014 B000001 8-47939
PAGE 2
015 A000001 State Street Bank and Trust Company
015 B000001 C
015 C010001 Boston
015 C020001 MA
015 C030001 02116
015 E010001 X
015 A000002 AB SEB bankas
015 B000002 S
015 C010002 Vilnius
015 D010002 Lithuania
015 D020002 LT 2600
015 E040002 X
015 A000003 AS SEB banka
015 B000003 S
015 C010003 Riga
015 D010003 Latvia
015 D020003 LV-1076
015 E040003 X
015 A000004 AS SEB Pank
015 B000004 S
015 C010004 Tallinn
015 D010004 Estonia
015 D020004 15010
015 E040004 X
015 A000005 Banco BCT S.A.
015 B000005 S
015 C010005 San Jose
015 D010005 Costa Rica
015 E040005 X
015 A000006 Banco Itau Chile
015 B000006 S
015 C010006 Santiago
015 D010006 Chile
015 E040006 X
015 A000007 Banco Itau Uruguay S.A.
015 B000007 S
015 C010007 Montevideo
015 D010007 Uruguay
015 D020007 11000
015 E040007 X
015 A000008 Banco Nacional de Mexico S.A. (Banamex)
015 B000008 S
015 C010008 Mexico City
015 D010008 Mexico
015 D020008 01210
015 E040008 X
015 A000009 Bank Handlowy w Warszawie S.A.
015 B000009 S
015 C010009 Warsaw
015 D010009 Poland
015 D020009 00-249
PAGE 3
015 E040009 X
015 A000010 Bank Hapoalim B.M.
015 B000010 S
015 C010010 Tel Aviv
015 D010010 Israel
015 D020010 61000
015 E040010 X
015 A000011 Banque Internationale Arabe de Tunisie
015 B000011 S
015 C010011 Tunis Cedex
015 D010011 Tunisia
015 D020011 1080
015 E040011 X
015 A000012 BNP Paribas Securities Services, S.C.A.
015 B000012 S
015 C010012 Athens, Greece
015 D010012 Cyprus
015 D020012 115 28
015 E040012 X
015 A000013 BNP Paribas Securities Services, S.C.A.
015 B000013 S
015 C010013 Athens
015 D010013 Greece
015 D020013 115 28
015 E040013 X
015 A000014 BNP Paribas Securities Services, S.C.A.
015 B000014 S
015 C010014 Paris, France
015 D010014 Portugal
015 D020014 Lt 1.19.01
015 E040014 X
015 A000015 Ceskoslovenska obchodna banka, a.s.
015 B000015 S
015 C010015 Bratislava
015 D010015 Slovak Republic
015 D020015 815 63
015 E040015 X
015 A000016 Ceskoslovenska obchodni banka, a.s.
015 B000016 S
015 C010016 Prague
015 D010016 Czech Republic
015 D020016 150 57
015 E040016 X
015 A000017 Citibank A.S.
015 B000017 S
015 C010017 Istanbul
015 D010017 Turkey
015 D020017 34394
015 E040017 X
015 A000018 Citibank del Peru, S.A.
015 B000018 S
PAGE 4
015 C010018 Lima
015 D010018 Peru
015 D020018 27
015 E040018 X
015 A000019 Citibank Maghreb
015 B000019 S
015 C010019 Casablanca
015 D010019 Morocco
015 D020019 20190
015 E040019 X
015 A000020 Citibank N.A.
015 B000020 S
015 C010020 Singapore
015 D010020 Singapore
015 D020020 486026
015 E040020 X
015 A000021 Citibank, N.A.
015 B000021 S
015 C010021 Buenos Aires
015 D010021 Argentina
015 D020021 1036
015 E040021 X
015 A000022 Citibank, N.A.
015 B000022 S
015 C010022 Sao Paulo
015 D010022 Brazil
015 D020022 SP 01311-920
015 E040022 X
015 A000023 Citibank, N.A.
015 B000023 S
015 C010023 Caracas
015 D010023 Venezuela
015 D020023 1050
015 E040023 X
015 A000024 Cititrust Colombia S.A. Sociedad Fiduciaria
015 B000024 S
015 C010024 Bogota DC
015 D010024 Colombia
015 E040024 X
015 A000025 Credit Suisse AG
015 B000025 S
015 C010025 Zurich
015 D010025 Switzerland
015 D020025 8070
015 E040025 X
015 A000026 Deutsche Bank AG
015 B000026 S
015 C010026 Netherlands
015 D010026 Belgium
015 D020026 1101 HE
015 E040026 X
PAGE 5
015 A000027 Deutsche Bank AG
015 B000027 S
015 C010027 Netherlands
015 D010027 France
015 D020027 1101 HE
015 E040027 X
015 A000028 Deutsche Bank AG
015 B000028 S
015 C010028 Eschborn
015 D010028 Germany
015 D020028 D-65760
015 E040028 X
015 A000029 Deutsche Bank AG
015 B000029 S
015 C010029 Mumbai
015 D010029 India
015 D020029 400 063
015 E040029 X
015 A000030 Deutsche Bank AG
015 B000030 S
015 C010030 Jakarta
015 D010030 Indonesia
015 D020030 10310
015 E040030 X
015 A000031 Deutsche Bank AG
015 B000031 S
015 C010031 Amsterdam
015 D010031 Netherlands
015 D020031 1101 HE
015 E040031 X
015 A000032 Deutsche Bank AG
015 B000032 S
015 C010032 Karachi
015 D010032 Pakistan
015 D020032 74000
015 E040032 X
015 A000033 Deutsche Bank AG
015 B000033 S
015 C010033 Makati City
015 D010033 Philippines
015 D020033 1226
015 E040033 X
015 A000034 Deutsche Bank AG
015 B000034 S
015 C010034 Netherlands
015 D010034 Portugal
015 D020034 1101 HE
015 E040034 X
015 A000035 Deutsche Bank AG
015 B000035 S
015 C010035 Taipei
PAGE 6
015 D010035 Taiwan - R.O.C.
015 D020035 106
015 E040035 X
015 A000036 Deutsche Bank S.A.E.
015 B000036 S
015 C010036 Madrid
015 D010036 Spain
015 D020036 28020
015 E040036 X
015 A000037 Deutsche Bank S.p.A.
015 B000037 S
015 C010037 Milan
015 D010037 Italy
015 D020037 20121
015 E040037 X
015 A000038 FirstRand Bank Limited
015 B000038 S
015 C010038 Johannesburg
015 D010038 South Africa
015 D020038 2001
015 E040038 X
015 A000039 HSBC Bank (China) Company Limited
015 B000039 S
015 C010039 Shanghai
015 D010039 China
015 D020039 200120
015 E040039 X
015 A000040 HSBC Bank (Vietnam) Limited
015 B000040 S
015 C010040 Ho Chi Minh City
015 D010040 Vietnam
015 E040040 X
015 A000041 HSBC Bank Egypt S.A.E.
015 B000041 S
015 C010041 Cairo
015 D010041 Egypt
015 E040041 X
015 A000042 HSBC Bank Middle East Limited
015 B000042 S
015 C010042 Al Seef
015 D010042 Bahrain
015 D020042 428
015 E040042 X
015 A000043 HSBC Bank Middle East Limited
015 B000043 S
015 C010043 Amman
015 D010043 Jordan
015 D020043 11190
015 E040043 X
015 A000044 HSBC Bank Middle East Limited
015 B000044 S
PAGE 7
015 C010044 Safat
015 D010044 Kuwait
015 D020044 13017
015 E040044 X
015 A000045 HSBC Bank Middle East Limited
015 B000045 S
015 C010045 Beirut
015 D010045 Lebanon
015 D020045 1107 2080
015 E040045 X
015 A000046 HSBC Bank Middle East Limited
015 B000046 S
015 C010046 Doha
015 D010046 Qatar
015 E040046 X
015 A000047 HSBC Bank Middle East Limited
015 B000047 S
015 C010047 Dubai
015 D010047 UAE - ADX
015 E040047 X
015 A000048 HSBC Bank Middle East Limited
015 B000048 S
015 C010048 Dubai
015 D010048 UAE - DFM
015 E040048 X
015 A000049 HSBC Bank Middle East Limited
015 B000049 S
015 C010049 Dubai
015 D010049 UAE - DIFC
015 E040049 X
015 A000050 HSBC Bank Oman S.A.O.G.
015 B000050 S
015 C010050 Seeb
015 D010050 Oman
015 E040050 X
015 A000051 HSBC Ltd.
015 B000051 S
015 C010051 Sydney
015 D010051 Australia
015 D020051 2000
015 E040051 X
015 A000052 HSBC Ltd.
015 B000052 S
015 C010052 Mumbai
015 D010052 India
015 D020052 400 057
015 E040052 X
015 A000053 HSBC Ltd.
015 B000053 S
015 C010053 Tokyo
015 D010053 Japan
PAGE 8
015 D020053 103-0027
015 E040053 X
015 A000054 HSBC Ltd.
015 B000054 S
015 C010054 Ebene
015 D010054 Mauritius
015 E040054 X
015 A000055 HSBC Ltd.
015 B000055 S
015 C010055 Auckland
015 D010055 New Zealand
015 D020055 1010
015 E040055 X
015 A000056 HSBC Ltd.
015 B000056 S
015 C010056 Seoul
015 D010056 Republic of Korea
015 D020056 100-161
015 E040056 X
015 A000057 HSBC Ltd.
015 B000057 S
015 C010057 Colombo
015 D010057 Sri Lanka
015 D020057 01
015 E040057 X
015 A000058 ING Bank (Eurasia) ZAO
015 B000058 S
015 C010058 Moscow
015 D010058 Russia
015 D020058 127473
015 E040058 X
015 A000059 ING Bank N.V.
015 B000059 S
015 C010059 Sofia
015 D010059 Bulgaria
015 D020059 1404
015 E040059 X
015 A000060 ING Bank N.V.
015 B000060 S
015 C010060 Bucharest
015 D010060 Romania
015 D020060 011745
015 E040060 X
015 A000061 ING Bank Ukraine
015 B000061 S
015 C010061 Kiev
015 D010061 Ukraine
015 D020061 04070
015 E040061 X
015 A000062 JSC Bank of Georgia
015 B000062 S
PAGE 9
015 C010062 Tbilisi
015 D010062 Republic of Georgia
015 D020062 0160
015 E040062 X
015 A000063 Landsbankinn hf.
015 B000063 S
015 C010063 Reykjavik
015 D010063 Iceland
015 D020063 155
015 E040063 X
015 A000064 Mizuho Bank, Ltd.
015 B000064 S
015 C010064 Tokyo
015 D010064 Japan
015 D020064 104-0052
015 E040064 X
015 A000065 Privredna Banka Zagreb d.d.
015 B000065 S
015 C010065 Zagreb
015 D010065 Croatia
015 D020065 10000
015 E040065 X
015 A000066 Republic Bank Limited
015 B000066 S
015 C010066 Port of Spain
015 D010066 Trinidad & Tobago
015 E040066 X
015 A000067 SB HSBC Bank Kazakhstan JSC
015 B000067 S
015 C010067 Almaty
015 D010067 Kazakhstan
015 D020067 480021
015 E040067 X
015 A000068 Skandinaviska Enskilda Banken AB (publ)
015 B000068 S
015 C010068 Copenhagen
015 D010068 Denmark
015 D020068 1577
015 E040068 X
015 A000069 Skandinaviska Enskilda Banken AB (publ)
015 B000069 S
015 C010069 Helsinki
015 D010069 Finland
015 D020069 SF-00101
015 E040069 X
015 A000070 Skandinaviska Enskilda Banken AB (publ)
015 B000070 S
015 C010070 Oslo
015 D010070 Norway
015 D020070 N-0123
015 E040070 X
PAGE 10
015 A000071 Skandinaviska Enskilda Banken AB (publ)
015 B000071 S
015 C010071 Stockholm
015 D010071 Sweden
015 D020071 SE-106 40
015 E040071 X
015 A000072 SSBT United Kingdom
015 B000072 S
015 C010072 Edingburgh, Scotland
015 D010072 United Kingdom
015 D020072 EH5 2AW
015 E040072 X
015 A000073 Stanbic IBTC Bank Plc.
015 B000073 S
015 C010073 Lagos
015 D010073 Nigeria
015 D020073 101007
015 E040073 X
015 A000074 Standard Bank Namibia Limited
015 B000074 S
015 C010074 Windhoek
015 D010074 Namibia
015 E040074 X
015 A000075 Standard Bank of South Africa Limited
015 B000075 S
015 C010075 Johannesburg
015 D010075 South Africa
015 D020075 2000
015 E040075 X
015 A000076 Standard Chartered Bank
015 B000076 S
015 C010076 Dhaka
015 D010076 Bangladesh
015 D020076 1212
015 E040076 X
015 A000077 Standard Chartered Bank (Hong Kong) Limited
015 B000077 S
015 C010077 Kwun Tong
015 D010077 Hong Kong
015 E040077 X
015 A000078 Standard Chartered Bank (Taiwan) Limited
015 B000078 S
015 C010078 Taipei
015 D010078 Taiwan - R.O.C.
015 D020078 105
015 E040078 X
015 A000079 Standard Chartered Bank (Thai) PCL
015 B000079 S
015 C010079 Bangkok
015 D010079 Thailand
015 D020079 10500
PAGE 11
015 E040079 X
015 A000080 Standard Chartered Bank Botswana Limited
015 B000080 S
015 C010080 Gaborone
015 D010080 Botswana
015 E040080 X
015 A000081 Standard Chartered Bank Cote d Ivoire
015 B000081 S
015 C010081 Abidjan
015 D010081 Ivory Coast
015 D020081 17
015 E040081 X
015 A000082 Standard Chartered Bank Ghana Limited
015 B000082 S
015 C010082 Accra
015 D010082 Ghana
015 E040082 X
015 A000083 Standard Chartered Bank Kenya Limited
015 B000083 S
015 C010083 Nairobi
015 D010083 Kenya
015 D020083 00100 GPO
015 E040083 X
015 A000084 Standard Chartered Bank Malaysia Berhad
015 B000084 S
015 C010084 Kuala Lumpur
015 D010084 Malaysia
015 D020084 50250
015 E040084 X
015 A000085 Standard Chartered Bank Uganda Limited
015 B000085 S
015 C010085 Kampala
015 D010085 Uganda
015 E040085 X
015 A000086 Standard Chartered Bank Zambia Plc.
015 B000086 S
015 C010086 Lusaka
015 D010086 Zambia
015 D020086 10101
015 E040086 X
015 A000087 State Street Trust Company Canada
015 B000087 S
015 C010087 Toronto
015 D010087 Canada
015 D020087 M5C 3G6
015 E040087 X
015 A000088 UBS AG
015 B000088 S
015 C010088 Zurich
015 D010088 Switzerland
015 D020088 8098
PAGE 12
015 E040088 X
015 A000089 UniCredit Bank Austria AG
015 B000089 S
015 C010089 Vienna
015 D010089 Austria
015 D020089 A-1090
015 E040089 X
015 A000090 UniCredit Bank Czech Republic a.s.
015 B000090 S
015 C010090 Praha
015 D010090 Czech Republic
015 D020090 140 92
015 E040090 X
015 A000091 UniCredit Bank d.d.
015 B000091 S
015 C010091 Sarajevo
015 D010091 Bosnia
015 D020091 71 000
015 E040091 X
015 A000092 UniCredit Bank d.d.
015 B000092 S
015 C010092 Bosnia
015 D010092 Republic of Srpska
015 D020092 71 000
015 E040092 X
015 A000093 UniCredit Bank Hungary Zrt.
015 B000093 S
015 C010093 Budapest
015 D010093 Hungary
015 D020093 H-1054
015 E040093 X
015 A000094 UniCredit Bank Serbia JSC
015 B000094 S
015 C010094 Belgrade
015 D010094 Serbia
015 D020094 RS-11070
015 E040094 X
015 A000095 UniCredit Bank Slovakia a.s.
015 B000095 S
015 C010095 Bratislava
015 D010095 Slovak Republic
015 D020095 SK-831 01
015 E040095 X
015 A000096 UniCredit Banka Slovenija d.d.
015 B000096 S
015 C010096 Ljubljana
015 D010096 Slovenia
015 D020096 1000
015 E040096 X
015 A000097 UniCredit Bulbank AD
015 B000097 S
PAGE 13
015 C010097 Sofia
015 D010097 Bulgaria
015 D020097 1000
015 E040097 X
015 A000098 Zagrebacka Banka d.d.
015 B000098 S
015 C010098 Zagreb
015 D010098 Croatia
015 D020098 10000
015 E040098 X
018 000000 Y
019 A000000 Y
019 B000000 186
019 C000000 EATONVANCE
020 A000001 MORGAN STANLEY
020 C000001 41
020 A000002 WEEDEN & CO.L.P.
020 B000002 13-3364318
020 C000002 6
020 A000003 Jefferies & Company, INC.
020 C000003 1
020 A000004 INSTINET, LLC
020 B000004 13-2625132
020 C000004 1
020 A000005 UBS Securities LLC
020 B000005 13-3873456
020 C000005 1
021 000000 50
023 C000000 0
023 D000000 0
024 000000 N
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
PAGE 14
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 1.000
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
PAGE 15
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 Y
053 B000000 N
053 C000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
PAGE 16
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 N
066 F000000 Y
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 Y
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 Y
070 D020000 Y
070 E010000 N
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 Y
070 K020000 Y
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
PAGE 17
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000 2321
071 B000000 37359
071 C000000 383878
071 D000000 1
072 A000000 6
072 B000000 0
072 C000000 4401
072 D000000 0
072 E000000 0
072 F000000 1899
072 G000000 0
072 H000000 0
072 I000000 9
072 J000000 127
072 K000000 0
072 L000000 83
072 M000000 7
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 24
072 S000000 4
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 30
072 X000000 2183
072 Y000000 0
072 Z000000 2218
072AA000000 0
072BB000000 10173
072CC010000 39007
072CC020000 0
072DD010000 15976
072DD020000 0
072EE000000 0
073 A010000 0.6480
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
PAGE 18
074 A000000 2123
074 B000000 0
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 382111
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 534
074 M000000 0
074 N000000 384768
074 O000000 0
074 P000000 320
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 2010
074 R040000 77
074 S000000 0
074 T000000 382361
074 U010000 24655
074 U020000 0
074 V010000 15.51
074 V020000 0.00
074 W000000 0.0000
074 X000000 18091
074 Y000000 0
075 A000000 0
075 B000000 380853
076 000000 14.51
077 A000000 N
078 000000 N
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
PAGE 19
086 F020000 0
087 A010000 COMMON SHARES
087 A020000 27828X100
087 A030000 ETB
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE JAMES F. KIRCHNER
TITLE TREASURER