An IRS identity verification letter for a tax refund means the agency’s fraud filters stopped your return and won’t release your money until you confirm you’re the person who filed it. The fix is usually straightforward: follow the exact instructions printed on your letter, verify through the method it specifies, and your refund should move within about nine weeks. What matters most is responding, and responding the way your specific letter tells you to.
Identify Which Letter You Received
The letter type dictates everything else. Look at the top corner for the notice number.
- CP5071, 5071C, or CP5071F: verify online at irs.gov/verifyreturn, or use the alternative instructions printed in the notice.1Internal Revenue Service. Understanding Your CP5071 Series Notice
- Letter 5447C: also directs you to the online verification portal.2Internal Revenue Service. Verify Your Return
- Letter 5747C: you cannot verify online. Call the toll-free number on the letter to schedule an in-person appointment at a Taxpayer Assistance Center.3Internal Revenue Service. Understanding Your Letter 5747C
- Letter 6331C: issued when the IRS suspects someone else may have filed using your information. Follow the instructions in the letter.
Every letter carries a reference number that links your verification session to your flagged return. Keep the letter somewhere safe. Losing it means calling the IRS for a replacement and adding weeks to the process.
Make Sure the Letter Is Real Before You Act
Scammers imitate these notices because they know people take them seriously. The IRS only initiates contact about a flagged return through a letter delivered by the U.S. Postal Service. It does not start these conversations by email, text message, phone call, or social media.4Internal Revenue Service. Ways to Tell if the IRS Is Reaching Out or if It’s a Scammer
If someone calls claiming to be the IRS, threatens arrest, or demands payment by gift card or prepaid debit card, hang up. That is not how the agency operates.4Internal Revenue Service. Ways to Tell if the IRS Is Reaching Out or if It’s a Scammer If a mailed letter looks suspicious, log into your IRS Online Account and check whether the same notice appears there. You can also call the IRS using the number listed on irs.gov rather than any number printed on the document in your hand.
What to Have in Front of You
Verification asks specific questions about specific line items. Gather everything before you start, because pausing mid-session to search for a document is how people get flustered and trigger extra questions.
- The IRS letter itself, with its reference number.
- The tax return the IRS is asking about, complete with all schedules and attachments.
- Your prior-year return. The system cross-references it during verification.
- W-2s and any 1099s for the tax year in question.
- A government-issued photo ID: driver’s license, state ID, or U.S. passport. For a Letter 5747C in-person appointment, bring the original document, not a copy.3Internal Revenue Service. Understanding Your Letter 5747C
If you end up on an ID.me video call, you’ll need either two primary IDs or one primary ID plus a secondary document such as a Social Security card, health insurance card, W-2, birth certificate with an official seal, or a recent bank statement, pay stub, or utility bill. Secondary documents generally can’t be more than a year old.
Completing the Verification
For CP5071 series notices and Letter 5447C, go to irs.gov/verifyreturn.2Internal Revenue Service. Verify Your Return The site uses ID.me for identity verification. You’ll either get through an automated document match, or you’ll be routed to a live video call with a “Trusted Referee” who checks your documents on camera. The video option exists specifically for people the automated flow can’t clear.
After ID.me confirms who you are, the IRS portal asks about details from your current and prior-year returns. These are not general questions. Expect something like the exact amount on a specific line of your 2024 Form 1040. This is where having the actual return in front of you matters. If the online system can’t confirm enough of your answers, it will direct you to call the toll-free number on your letter and complete verification by phone with a live agent working from the same format.
For Letter 5747C, skip the online portal. Call to schedule an appointment at a Taxpayer Assistance Center, then bring your original photo ID and supporting documents to the appointment.3Internal Revenue Service. Understanding Your Letter 5747C You’ll get confirmation on the spot once verification is complete.
If You Didn’t File the Return
If the letter is asking about a return you never filed, someone likely used your Social Security number to try to steal a refund. When you go through verification, tell the IRS during the interview that you did not file the return.1Internal Revenue Service. Understanding Your CP5071 Series Notice
Then file Form 14039, the Identity Theft Affidavit, to formally report the fraud. You can submit it online at irs.gov/dmaf, fax it toll-free to 855-807-5720, or mail it to the IRS in Fresno, California.5Internal Revenue Service. Form 14039, Identity Theft Affidavit If you also need to file your own legitimate return and the fraudulent one is blocking electronic filing, attach Form 14039 to a paper return and mail it to the IRS address where you normally file.
Be ready to wait. Identity theft cases currently take an average of about 20 months to resolve, and the IRS had roughly 387,000 such cases in inventory as of the most recent filing season.6Taxpayer Advocate Service. National Taxpayer Advocate Issues Mid-Year Report to Congress
When Your Refund Arrives
Once you verify successfully, the IRS lifts the fraud flag and returns your file to normal processing. Expect your refund within nine weeks of completing verification.2Internal Revenue Service. Verify Your Return Some cases move faster, but nine weeks is the window the IRS commits to.
Track progress with the “Where’s My Refund?” tool on irs.gov, which updates 24 hours after e-filing or four weeks after a paper filing.7Internal Revenue Service. Refunds The IRS2Go mobile app shows the same information; you enter your Social Security number, filing status, and the exact refund amount.8Internal Revenue Service. IRS2Go Mobile App
If the initial flag caught more than an identity question, such as questionable credits or income discrepancies, your return may go through additional manual review even after your identity is confirmed. If that happens, you’ll get a separate notice. Otherwise, the refund goes out by direct deposit or paper check based on what you originally chose.
What Happens if You Don’t Respond
Ignoring the letter doesn’t clear the flag. Your return stays frozen and the refund isn’t released. Eventually the IRS may treat the return as if it was never filed, which means starting over or contacting the agency to reopen verification.
There’s a hard deadline behind all of this. Under federal law you have three years from the date you filed a return, or two years from the date you paid the tax, whichever is later, to claim a refund.9Office of the Law Revision Counsel. 26 USC 6511 – Limitations on Credit or Refund If verification issues drag past that window, the refund is gone; the IRS has no authority to pay it. The clock doesn’t pause while your return sits in the queue.
Get an IP PIN Before Next Filing Season
An Identity Protection PIN is a six-digit number known only to you and the IRS. When you put it on your return, the IRS won’t accept any filing under your Social Security number without it, which locks out anyone trying to file in your name. Anyone with an SSN or ITIN who can verify their identity can enroll, and parents can request one for dependents.10Internal Revenue Service. Get an Identity Protection PIN
The fastest route is your IRS Online Account. If you can’t create one and your adjusted gross income on your most recent return was below $84,000 (or $168,000 for married filing jointly), apply using Form 15227 and the IRS will call to verify your identity by phone. The PIN arrives by mail within four to six weeks. If neither option works, authenticate in person at a Taxpayer Assistance Center and receive the PIN by mail within about three weeks.10Internal Revenue Service. Get an Identity Protection PIN
The PIN changes every year. If you enrolled online, retrieve the new one from your IRS account each January. If the IRS enrolled you automatically after confirming you were an identity theft victim, a CP01A notice with the updated PIN arrives by mail each year. The PIN applies to Forms 1040, 1040-NR, 1040-PR, 1040-SR, and 1040-SS, including prior-year returns filed during the current year.
When Your Case Stalls, Call the Taxpayer Advocate Service
The Taxpayer Advocate Service is an independent organization inside the IRS that helps when the normal process breaks down. If verification delays are causing real financial hardship, such as an eviction, unpaid medical care, or utilities about to be shut off, TAS can push your case forward. You’re also eligible if you’ve tried to resolve the issue directly with the IRS and gotten nowhere, or if you believe the system isn’t working the way it should.11Taxpayer Advocate Service. Identity Theft
Reach TAS at 1-877-777-4778 or through taxpayeradvocate.irs.gov. With identity theft cases averaging around 20 months, TAS is worth calling if the delay is causing genuine harm. TAS can’t override IRS decisions, but it can move a case that would otherwise sit in a queue indefinitely.