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Understanding your letter 6167C

What this letter is about

Letter 6167C tells you we need to verify your identity to process a federal income tax return filed with your name and taxpayer identification number.


What you need to do

  • Call the Taxpayer Assistance Center toll-free at the number on your letter.
  • If you are out of the country, mail your response with the requested information within 30 days.

Bring the following to your appointment:

  • The 6167C letter.
  • The income tax return referenced in the letter (Form 1040, 1040-A, 1040-EZ,1040-PR, 1040-NR, etc.).
    Note: A Form W-2 or Form 1099 is not a tax return.
  • A previous  year¡¯s income tax return, other than the year in the letter (Form 1040, 1040-A, 1040-EZ,1040-PR, 1040-NR, etc.).
    Note: A Form W-2 or Form 1099 is not a tax return.
  • Supporting documents that you filed for each year¡¯s income tax return (Form W-2, Form 1099, Schedule C or F, etc.).

Bring the following identity verification documents to your appointment:

  • A valid U.S. federal or state government-issued picture identification, such as a driver¡¯s license, state ID, or passport.
  • At least ONE of the following forms of identification:
  • Current U.S. federal or state government-issued identification that is different from the first document above;
  • U.S. Social Security card; mortgage statement with current address;
  • Lease agreement for a house or apartment with current address;
  • Car title;
  • Voter registration card (not the voter registration application);
  • Utility bill with current address;
  • Birth certificate (the IRS no longer accepts Puerto Rican birth certificates issued before July 1, 2010);
  • Current school records.

You may want to

  • Review this notice with your tax preparer.
  • Contact Taxpayer Advocate Service (TAS) if you¡¯re experiencing an economic hardship or need help in resolving problems. You can reach TAS at 877-777-4778 or TTY/TTD 800-829-4059.

What if you don't respond

We may not be able to process your return, issue refunds, or apply overpayments to next year¡¯s estimated tax.


Frequently asked questions

What happens after my appointment or after I have mailed the documentation?

Once we verify your identity and confirm you submitted the tax return, we¡¯ll continue processing your return. It will take about nine weeks to process.

What if I didn¡¯t file the tax return?

Someone else may have filed it for you without your consent. Send us a completed and signed Form 14039, Identity Theft Affidavit PDF. You may want to read our Identity Theft Central page while we review your Form 14039.

Bezwen ¨¨d?

  • Ou ka otorize yon moun (an angl¨¨) pou kontakte IRS la pou ou.
  • Gade si w kalifye pou resevwa ¨¨d nan men yon .
  • Si w pa kapab jwenn sa w vle a anliy, rele nan nimewo IRS nan pati anl¨¨ avi oswa l¨¨t ou a. Si w pa te resevwa yon l¨¨t oswa yon avi, itilize asistans telefonik
  • Si ou pa ka rezoud penalite a poukont ou, kontakte S¨¨vis Defans Kontribyab la, yon ¨°ganizasyon endepandan anndan IRS.