Identity verification

What does IRS Letter 5071C mean?

The IRS CP5071 series, including Letter 5071C, asks you to verify your identity and whether you filed the return identified in the letter.

Reviewed against the linked IRS guidance on October 5, 2026. This summary does not replace your own notice.

Check the date and instructions on your letter

Do not share identity documents, passwords, or a Social Security number with this site. Use the official IRS verification route.

Why you may have received 5071C

If you did not file the return, someone may have used your information. If you did file it, verification helps the IRS continue processing.

What to check now

  1. 1Read the exact verification instructions on the letter.
  2. 2Go directly to IRS.gov/verifyreturn if your letter offers online verification.
  3. 3Have your tax records ready for the IRS process; do not enter them into this finder.

Read the IRS source

The official IRS page has the full instructions, payment or verification links when applicable, and contact information. Always compare it with the version of the letter you received.

Official IRS guidance for 5071C

Need a review of your specific facts?

IntegraFin can review the letter, relevant return, payment history, and records under an agreed scope. A website lookup cannot confirm a balance, deadline, or outcome, and requesting help does not pause the IRS process.

Request notice review