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Identity verification

IRS Letter 5071C

Verify your identity before the IRS processes your return

Respond by

The date printed on the letter

Who sent it

IRS
Facts on this page come from that IRS page, last updated by the IRS Mar 17, 2026; read by TaxScout Oct 19, 2026.

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What this letter asks of you, what to gather, and what to ask a professional if you need one. No phone number asked.

What this letter means

A Form 1040-series tax return was filed under your SSN or ITIN and the IRS needs you to verify your identity and the return before it continues processing. The IRS page covers notices CP5071, 5071C and CP5071F.

The IRS holds your return until you confirm it was you who filed it.

What to do

  1. 1Follow the instructions on your notice to verify your identity and the tax return.
  2. 2If your notice offers online verification, start at irs.gov/verifyreturn.
  3. 3Have your notice, the return for the tax year on the notice, a prior-year return if you have one, and supporting documents such as W-2s, 1099s and Schedules C or F ready.
  4. 4If you did not file the return, tell the IRS that during verification; you may be the victim of identity theft.
  5. 5If you cannot verify online, call the telephone number on your notice.

Is this letter real?

The contact information on the notice is for identity and tax-return verification only. The IRS page recommends getting an Identity Protection PIN and says you do not need Form 14039 if you verify the return, unless the IRS tells you to file it.

Check the notice number against the official IRS site before you respond, and respond only to the address or number printed on the official page.

Common questions

What is IRS Letter 5071C?

A Form 1040-series tax return was filed under your SSN or ITIN and the IRS needs you to verify your identity and the return before it continues processing. The IRS page covers notices CP5071, 5071C and CP5071F. The IRS page for it is titled 'Understanding your CP5071 series notice'.

How long do I have to respond to Letter 5071C?

The IRS page for this notice does not state a fixed number of days. Use the date printed on your letter, and act before it.

Is Letter 5071C a scam?

The contact information on the notice is for identity and tax-return verification only. The IRS page recommends getting an Identity Protection PIN and says you do not need Form 14039 if you verify the return, unless the IRS tells you to file it.

Do I need a CPA for Letter 5071C?

Not always. Upload the letter and the free report explains what it asks for and what to gather; if a professional makes sense, the report says why and what to ask. TaxScout never shares your request with any firm unless you ask for that on the report.

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Not tax advice. TaxScout is not the IRS. Deadlines and steps above are quoted from the IRS page linked at the top and may change; the letter in your hand controls.