VALID › Notice Library › Letter 4464C

In the IRS’s own words · not reviewed by VALID

4464C letter explained, in the IRS’s own words

Verifying your income and income tax withholding

Read the full 4464C page on irs.gov ↗

Quoted from www.irs.gov/individuals/understanding-your-letter-4464c, read October 15, 2026 · fingerprint 11196baf8500

What this letter is about

Verifying your income and income tax withholding

If you filed a return

  • You don't need to take any action. Please do not call us until 60 days after the letter date and only if you haven't received your refund or heard from us by then.
  • We recommend you review your return for any errors and file a corrected or amended return to correct the information.

You may want to

  • Review this letter with your tax preparer.
  • Consider an IRS Identity Protection PIN to help prevent misuse of your taxpayer identification number on fraudulent federal income tax returns. Learn more at IRS.gov/ippin.
  • 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.

Why is my return being reviewed?

We select some returns to determine if income, expenses, and credits are being reported accurately. This doesn't mean you made an error or were dishonest.

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.

What to do next

  • Write down the date on the letter today.
  • Look the number up on irs.gov yourself. Don’t trust a link or phone number from anyone else.
  • If it says you owe money or proposes changes to your return, take it to a licensed CPA, EA or tax attorney before that date.

Not advice. Not a filing. Verify with a licensed professional. Rules change by year and facts.

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