IRS notice decoder · Identity and return verification
5071C: the IRS wants you to verify your identity and a return
A 5071C means a return was filed under your SSN or ITIN and the IRS wants you to confirm it's you, and your return, before it goes further.
By the Carry Forward Learning team Reviewed by Hunter Nottingham, JD, CPA
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CheckedOct 19, 2026What a 5071C means
A 5071C is an identity check. The IRS says a Form 1040-series return was filed under your Social Security number or ITIN, and it needs you to verify your identity and that return before it keeps processing it. source 1
The IRS groups it with the CP5071 and CP5071F as one series, and the same page covers all three. source 1
We read it as a fork in the road. If you filed, verifying lets your return move again. If you didn't file, verifying is how you tell the IRS someone else may have used your number. source 1
The single habit we'd stress: start verification only by typing irs.gov into your browser yourself. Never start it from a link in a message. Scammers copy these letters because people expect them.
The date that counts
The IRS page doesn't set a window of its own; it says to follow the instructions on your notice, so use any date printed there. Until you verify, the IRS says it can't continue processing the return. source 1
Why people get one
- You filed, and something about the return made the IRS's filters want to confirm it's really you.
- Someone else filed a return using your Social Security number or ITIN.
- Your return looked different from your past returns in a way that drew a second look.
First steps
- Start verification only by typing irs.gov into your browser yourself. Never start it from a link in an email, text or social media message, even one that looks like it came from the IRS.
- If your letter offers online verification, the IRS says to start at irs.gov/verifyreturn. Type that address in yourself. source 1
- Gather the notice, the return for the year on the notice, a prior-year return if you have one, and supporting documents such as Forms W-2 and 1099 and Schedule C or F. source 1
- If you didn't file a return, be ready to say so during verification. source 1
- If you can't verify online, use the number printed on your notice, and keep in mind it handles identity and return verification only, not refund status. source 1
- After it's settled, look into an Identity Protection PIN so no one else can file with your number. source 1
What not to do
- Don't start verification from a link in an email, text or social media message. Type irs.gov yourself.
- Don't file Form 14039, Identity Theft Affidavit, once you've verified, unless the IRS tells you to. source 1
- Don't call the number on the notice to ask about your refund; the IRS says other account information may not be available there. source 1
- Don't file a second copy of the same return to speed things up. Verify instead.
Related notices
Keep reading
Questions
Is a 5071C letter a scam?
A real one exists and is common. Check it without trusting the envelope: type irs.gov in yourself, and if the letter offers online verification, the IRS says to start at irs.gov/verifyreturn. Never start from a link in a message. source 1
What do I need to verify my identity for a 5071C?
The IRS lists the notice, the return for the year on the notice, a prior-year return if you have one, and supporting documents such as Forms W-2 and 1099 and Schedules C or F. source 1
I didn't file a return. What should I do with a 5071C?
The IRS says you may be a victim of identity theft and should verify with it, telling it during verification that you didn't file. source 1
Do I need to file Form 14039 after a 5071C?
The IRS says no, not if you verify your return, unless it tells you to. source 1
Sources
- IRS, Understanding your CP5071 series notice (updated March 17, 2026) (external site) checked Oct 19, 2026
Every rule on this page comes from the IRS page in the list, read on the date shown. Your notice itself is the final word on its own dates and amounts.