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Part 4

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

ACTIONS FOR MISSING TIN(S) AND INCORRECT NAME/TIN COMBINATIONS

The CP2100 or CP2100A Notice includes a listing(s) of the information returns you filed that had missing, incorrect, and/or not currently issued TIN(s). You should compare the listing(s) to your records to determine which of the following required actions you must take.

Missing TIN(s)

We consider a TIN to be missing if it is not provided or if it is obviously incorrect. Examples are a TIN with more or less than nine digits, or with a mixture of digits and letters. For accounts with missing TIN(s), make sure backup withholding has begun and continue backup withholding until you receive a TIN. If you have not begun backup withholding, generally you must:

  1. Begin backup withholding on any reportable payment you make and continue backup withholding until you receive a TIN. Remember that in some cases, the TIN must be certified.

  2. Do not send a first or second “B” Notice in response to the CP2100 or CP2100A Notice. However, in order to avoid a penalty for filing an information return that omitted the payee’s TIN, you must make a first annual solicitation for the TIN (generally by December 31 of the year in which the account is opened) and if a TIN is still not received make a second annual solicitation by December 31 of the following year. No annual solicitations are required in the years in which no reported payments are made.

  3. Report amounts withheld on Form 945, Annual Return of Withheld Federal Income Tax, and make the required deposits.

Note: Generally, you must obtain a TIN from a payee even for a “one-time” transaction. If you do not, the law allows us to charge a penalty. Publication 1586, Reasonable Cause Regulations and Requirements for Missing and Incorrect Name/TIN(s), has information on removing or reducing penalties due to reasonable cause.

Note: If you inadvertently did not include the TIN on the information return, do not contact the payee. Include the TIN on any future information returns filed.

Incorrect Name/TIN Combinations (including not currently issued TINs)

A Name/TIN combination is incorrect if it does not match or cannot be found on IRS or SSA files. You must follow different procedures depending on whether information on the listing(s) agrees or disagrees with you business records. Compare the listing(s) with your records and take the following actions:

For account information that does not agree, check to see if you put the incorrect information on the return, if the information changed after you filed the return, or if the IRS misprinted the information when processing the return. In these situations, do not write to the IRS. However:

1. If you reported the incorrect information on the return, correct your records and include that information on any future information returns you file. Do not send a “B” Notice to the payee. Do not send the correction to the IRS.

2. If the information changed after you filed the return, include that information on any future information returns you file. Do not send a “B” Notice to the payee. Do not send the correction to the IRS.

3. If the IRS misprinted your information, make a note of it in your records and do not take any action. Do not send the correction to the IRS.

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ACTIONS FOR MISSING TIN(S) AND INCORRECT NAME/TIN COMBINATIONS

For account information that agrees with your records, determine whether this is the first or second time, within three calendar years, that we have notified you about an incorrect Name/TIN combination. Your first notification of an incorrect Name/TIN combination occurs when the payee TIN appears for the first time on the listing we send you. The second notification of an incorrect Name/TIN combination is when the same payee TIN appears for the second time within three calendar years on the listing.

Note: The 60-day exemption from backup withholding on presentation of an awaiting - TIN certificate applies only to interest and dividend payments, and certain payments made with respect to readily tradable instruments. Any other reportable payment, such as non-employee compensation, is subject to backup withholding immediately, even if the payee has applied for and is awaiting a TIN. Upon presentation of an awaiting TIN certificate, the payee must certify under penalties of perjury that he/she is not currently subject to backup withholding.

First “B” Notice

  1. Send the First “B” Notice, Form W-9, and an optional reply envelope to the payee within 15 business days from the date of the CP2100/CP2100A Notice or the date you received it (whichever is later). Date the “B” Notice no later than 30 business days after the date of the CP2100/CP2100A Notice or the date you received it (whichever is later). The outer mailing envelope must be clearly marked “IMPORTANT TAX INFORMATION ENCLOSED” or “IMPORTANT TAX RETURN DOCUMENT ENCLOSED.”

  2. Make sure that necessary information such as the date, account number, and BWH rate are on the “B” Notice before mailing it to the payee. If you do not include the optional reply envelope be sure to provide return address information in your mailing.

  3. Update your records with the corrected information you receive from the payee and include it on any future information returns you file. Do not send the signed Form W-9 to the IRS.

  4. Begin backup withholding on payments made to payees who do not return a signed Form W-9 in response to the First “B” Notice, no later than 30 business days after the date of the CP2100/CP2100A Notice or the date you received it (whichever is later). However, you may begin backup withholding the day after the date you receive the CP2100 Notice. Stop backup withholding no later than 30 calendar days after you receive the signed Form W-9 from the payee. You may stop backup withholding any time within that 30 calendar day period.

Note: Do not file a corrected Information Return unless you are also making a change to the dollar amount reported on a Form 1099.

Note: It is your responsibility to send the appropriate “B” Notice to the payee, when required, to obtain the correct Name/TIN. This information may not be solicited by telephone. You need a TIN that the payee certifies as correct on Form W-9 in order to stop current backup withholding or prevent backup withholding from starting.

Second “B” Notice

  1. Send the Second “B” Notice and an optional reply envelope to the payee within 15 business days after the date of the CP2100/CP2100A Notice or the date you received it (whichever is later). Date the “B” notice no later than 30 business days after the date of the CP2100/CP2100A Notice or the date you received it (whichever is later). Do not send a Form W-9. The outer mailing envelope must be clearly marked “IMPORTANT TAX INFORMATION ENCLOSED” or “IMPORTANT TAX RETURN DOCUMENT ENCLOSED.”

Backup Withholding For Missing and Incorrect Name/Tin(S) 15

ACTIONS FOR MISSING TIN(S) AND INCORRECT NAME/TIN COMBINATIONS

  1. An individual payee must provide the payor with a copy of a Social Security card with his or her correct name and SSN. Payors may rely upon a Social Security card as being correct only if the name and SSN combination appearing on the card differ from the name and SSN combination appearing on the second B notice, or if there is a date appearing on the Social Security card that is no earlier than six months prior to the date of the second B notice. If the TIN is an EIN, the payee must contact the IRS to get his or her employer identification number validated on the IRS Letter 147C. A “Letter 685C” is requested from the IRS by the payee to validate an ITIN. The payee then sends a copy of the “Letter 685C” received from the IRS to the Payer. A “Letter 096C” is requested by the payee from the IRS to validate an ATIN. The payee then sends a copy of the “Letter 096C” received from the IRS to the payer.

  2. Allow 30 business days after the date of the Second “B” Notice to receive a copy of a Social Security card described in paragraph 2 or Letter 147C from the payee. Begin backup withholding on payments made to the payee if you do not receive a copy of a Social Security card or Letter 147C by the 30th business day. You may, at your option, begin backup withholding anytime during the 30 business day period. You must continue to backup withhold until you receive the validation. Stop backup withholding no later than 30 days after you receive the required validation. You may stop backup withholding anytime within the 30 calendar day period after receiving validation.

Note: You are not required to file a corrected Information Return unless you are also making a change to the dollar amount reported on Form 1099.

Note: It is your responsibility to send the appropriate “B” notice to the payee, when required, to solicit the correct Name/TIN. This information may not be solicited by telephone. You need a TIN validation (IRS Letter 147C or a copy of a Social Security cardas appropriate) in order to stop current backup withholding or prevent backup withholding from starting.

Third and Subsequent Notices

Generally, you may ignore a third or subsequent notice of missing or incorrect TIN(s) if you completed the actions for the First and Second “B” Notices and the incorrect payee name and TIN combination and account number remain the same. However, if the CP2100/CP2100A Notice and listing(s) relate to the same payee, but with a different Name/TIN combination than on the “first” and “second” notice, you must treat the notice as a “first” notice.

Backup Withholding For Missing and Incorrect Name/Tin(S) 16

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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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