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Part 8

Publication 1281 — Backup Withholding for Missing and Incorrect Name/TINs (including instructions for reading tape cartridges and CD/DVD formats) · 2026-10-03 edition · updated 2026-10-04 · United States

INSTRUCTIONS FOR READING TAPE CARTRIDGES

General

A tape cartridge file will have the following characteristics:

a) 18 channel Standard Label/EBCDIC with: (a) odd parity and (b) a density of 1600 BPI.

b) Tape cartridges will be ½ -inch tape contained in plastic cartridges which are approximately 4-inches by 5

-inches by 1 -inch in dimension. Magnetic tape will be chromium dioxide particle based ½ -inch tape.

c) Tape cartridges are 3480 compatible (a) Contain 37,871 CPI

d) Tape thickness - 1.0 or 1.5 mils

Record Length

A tape will be blocked in groups of 20 records, subject to the following:

a) a record will be 208 tape positions,

b) all records except the Header and Trailer Labels will be blocked,

c) a block will be 4,160 tape positions, and

d) in the event of a short block (less than 20 records), all remaining positions will be filled in with 9s.

Tape Marking Conventions

Header Label:

a) Standard headers will be used. They will be marked VOL1, HDR1, HDR2. 2. The HDR1 record will contain

the Data Set Name “O4061211.” 3. This record will be 80 positions long.

Trailer Label:

a) Standard trailer labels will be used. They will begin with EOR1, EOR2, EOF1 or EOF2.

b) This label will be 80 positions long.

Tape Marks:

a) Tape marks are used to signify the physical end of the recording on the tape.

b) They follow the header label, and precede and follow the trailer label.

External Label:

A label marked with the Data Set Name “O4061211” will be put on the cartridge(s).

Backup Withholding For Missing and Incorrect Name/Tin(S) 31

INSTRUCTIONS FOR READING TAPE CARTRIDGES

PAYER “A” RECORD

TAPE POSITION FIELD TITLE LENGTH DESCRIPTION AND REMARKS
1 RECORD TYPE 1 An “a” will be entered
2-16 ACCESS KEY 15 Number used by the irs to group a payer’s
information return transmittals.
17-18 SERVICE CENTER 2 Two digit service center codes:
Brookhaven 19
Cincinnati 17
Memphis 49
Ogden 29
Philadelphia 28
19-27 PAYER’S EIN 9 The nine digit number assigned by the irs.
28-67 PAYER’S NAME 40 Self-explanatory.
68-75 NUMBER OF
DOCUMENTS
8 The number of information returns with
missing and incorrect tins associated with this
payer. It will be right justifed and zero flled.
76-83 BWH TIN STATUS 1 CNT 8 The number of documents sent to the payer
with a bwh-tin-status-indequal to “1” (see
payer “b” record). It will be right justifed and
zero flled.
84-91 BWH TIN STATUS 2 CNT 8 The number of documents sent to the payer
with a bwh-tin-status-ind equal to “2” (see
payer “b” record). It will be right justifed and
zero flled.
92-99 BWH TIN STATUS 3 CNT 8 The number of documents sent to the payer
with a bwh-tin-status-ind equal to “3” (see
payer “b” record). It will be right justifed and
zero flled.
100 FILLER 1 Blank flled
101-104 TAX YEAR 4 Tax year documents were submitted
105-208 FILLER 104 Blank flled

Backup Withholding For Missing and Incorrect Name/Tin(S) 32

INSTRUCTIONS FOR READING TAPE CARTRIDGES

PAYER “B” RECORD

TAPE POSITION FIELD TITLE LENGTH DESCRIPTION AND REMARKS
1 RECORD TYPE 1 A “b” will be entered
2-10 TIN 9 The payee’s tin
11 BWH TIN STATUS 1 “1” Missing tin “2” not currently issued tin “3”
incorrect name/tin
12-16 TCC 5 Transmitter control code
17-18 DOC TYPE 2 “10” = Form 1099-k “79” = form 1099-b “91”
= form 1099-g “86” = form 1099-div “92” =
form 1099-int “95” = form 1099-misc “96” =
form 1099-oid “97” = form 1099-patr “71” =
form 1099-nec
19-38 ACCOUNT NUMBER 20 Payee’s account number from payer
39-78 NAME LINE 1 40 Payee’s name line 1
79-118 NAME LINE 2 40 Payee’s name line 2
119-158 STREET ADDRESS 40 Payee’s street address
159-188 CITY 30 Payee’s city
189-190 STATE CODE 2 Payee’s state code
191-195 ZIP CODE 5 Payee’s zip code
196 TIN INDICATOR 1 “1” = Payer indicated ein
“2” = Payer indicated ssn
“0” = No tin indicated
197-200 PAYER OFFICE CODE 4 Alphanumeric
201-208 SEQUENCE NUMBER 8 Sequence number within payer

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INSTRUCTIONS FOR READING TAPE CARTRIDGES

PAYER “C” RECORD

TAPE POSITION FIELD TITLE LENGTH DESCRIPTION AND REMARKS

1 RECORD TYPE 1 A “c” will be entered

Counts as described in positions 68-99 of the payer “a” record

34-208 FILLER 175 Blank filled

Backup Withholding For Missing and Incorrect Name/Tin(S) 34

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▸Contents — Publication 1281 — Backup Withholding for Missing and Incorrect Name/TINs (including instructions for reading tape cartridges and CD/DVD formats)

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