If a letter arrived asking you to verify your identity, the reason you have to verify your tax return with the IRS is that something on the return matched a pattern the agency’s fraud filters watch for. The Taxpayer Protection Program holds the refund until you confirm you’re the person who filed. It’s routine, it’s common, and once you respond the return moves back into normal processing.
What Tripped the Filter
Every return runs through automated checks that compare your Form 1040 against W-2 and 1099 data employers and banks have already sent the IRS. A mismatch between what you reported and what those third parties reported is one of the fastest ways to get pulled aside.
Address changes are another common trigger, especially a move to a different state from last year’s filing. So are refunds that are much larger than in prior years, and returns filed very early in the season before employers have submitted wage reports.
Sometimes you didn’t do anything unusual. If someone already filed a return using your Social Security number, your legitimate filing is the second one in and gets held automatically. In that situation, the verification letter is often the first sign that you’re a victim of tax-related identity theft, which changes what you need to do next.
Which Letter You Received
The specific letter tells you what verification options are open to you. Every legitimate letter arrives by U.S. mail and carries a control number unique to your case. The IRS does not ask for passwords, PINs, or bank credentials by email or text; a message through those channels asking for that information is a scam.
- Letter 5071C is the most widely issued. It offers both an online option and a phone option.
- Letter 4883C requires you to call the Taxpayer Protection Program hotline. There is no online option.
- Letter 5447C goes to taxpayers with foreign addresses and provides phone and mail options.
- Letter 5747C is used less frequently and requires an in-person visit to a Taxpayer Assistance Center.
- Letter 6331C works like 5071C, with both an online path and a phone option.
How to Verify
Online
If your letter includes an online option (Letters 5071C and 6331C), this is the fastest route. The IRS uses a service called ID.me. You create an ID.me account or sign in with an existing one, upload a photo of your government-issued ID, and take a live selfie so the system can match your face to the photo. If you don’t want to use the selfie process or lack a smartphone camera, ID.me offers a live video call with an agent that doesn’t require biometrics. After ID.me confirms who you are, you enter the control number from your letter to link the verification to the held return. The portal is available around the clock.
Phone
Letter 4883C directs you to the Taxpayer Protection Program hotline, and every other letter type lists a phone number as a backup. Have your documents in front of you when you call. The representative will ask questions drawn from your tax returns and personal records. Wait times during peak filing season are long, so budget extra time. If you can’t reach anyone or you’re outside the United States, the general TPP line is 800-830-5084, with 267-941-1000 for international callers.
In Person
Letter 5747C requires an appointment at a Taxpayer Assistance Center, and phone representatives may also send you to one if they can’t finish verification over the phone. Bring your letter, original identification (not photocopies), and the tax return in question. The agent reviews your documents on the spot and updates your account.
Taxpayers under 18 can’t use the online tool. A parent or guardian should call the number on the letter to arrange verification for a minor’s return.
If You Didn’t File That Return
Getting a verification letter for a return you never filed means someone used your Social Security number to file a fraudulent one. Call the Taxpayer Protection Program hotline listed on your letter right away and tell the representative you didn’t file the return in question. The IRS will flag your account and start investigating.
After that call, file Form 14039, the Identity Theft Affidavit, to create a formal record. You can complete it online through the IRS website. One exception: if you received Letter 5747C, follow that letter’s instructions instead of filing Form 14039. Once the IRS processes your identity theft claim, you can file your legitimate return on paper. It takes longer than a normal filing because the agency has to sort out which return is real.
What to Have Ready
Gather everything before you call, log in, or head to an office. The documents are essentially the same across verification methods:
- The IRS letter itself, so you have the control number.
- The tax return for the year in question — the Form 1040 or 1040-SR you filed, or a copy from your tax software. W-2s and 1099s alone don’t substitute for the return.
- A prior-year tax return. The IRS often asks for your prior-year adjusted gross income, which sits on Line 11 of Form 1040.
- Supporting income documents: W-2s, 1099s, and any schedules for the year under review.
- A valid government-issued photo ID: driver’s license, state ID card, or U.S. passport.
If you claimed a refund, know the exact dollar amount from the return. Having precise figures ready speeds every method.
If You Don’t Respond
Ignoring the letter doesn’t make the hold go away. The IRS won’t process your return or release your refund until you complete the identity check, and the return sits suspended indefinitely. Letter 5071C gives you 30 days from the date printed on the letter to respond by phone. Miss that window and you can still verify, but processing takes longer because the IRS has to pull your case back into the active queue. Doing nothing never results in the refund arriving. If you lost the letter, check your IRS online account or call 800-830-5084 to get started.
How Long the Refund Takes After You Verify
Once verification clears, the return moves from the suspended queue back into normal processing. The IRS says this can take up to nine weeks, though many people see the refund sooner, especially if they filed electronically. Paper filers generally wait longer because their returns need manual data entry.
Track the refund through “Where’s My Refund?” on IRS.gov or the IRS2Go mobile app. You’ll need your Social Security number, filing status, and exact refund amount. The status should shift from “received” to “approved” once the security hold clears. If the IRS spots something else during final review, such as a questioned deduction or credit, expect more correspondence before the refund goes out. Verification is the biggest hurdle, but clearing it doesn’t guarantee the rest of the return passes without further review.
Interest When the Hold Runs Long
When the IRS holds your refund past a certain point, it owes you interest. Under the 45-day rule in IRC Section 6611(e), the agency has 45 days from the later of your return’s due date or the date you filed to issue the refund without owing interest. Past that, interest accrues from the original due date of the return and compounds daily.
The rate changes quarterly. For the first quarter of 2026, the rate on individual overpayments is 7%. For the second quarter of 2026, it drops to 6%. The IRS adds the interest automatically when it issues the refund; you don’t file a separate claim for it.
One catch: if you filed after the due date including extensions, interest doesn’t start until the date the IRS actually received the return, not the original due date. And if the IRS treats your return as “unprocessible” because information is missing, interest doesn’t begin until you supply what’s needed to complete it.
Keeping This From Happening Next Year
The most effective step is enrolling in the IRS Identity Protection PIN program. An IP PIN is a six-digit number you put on your return each year. Without it, no one can file a return under your Social Security number, which removes the most common trigger for verification holds.
Anyone with a Social Security number or Individual Taxpayer Identification Number can enroll. The easiest way is through your IRS online account at IRS.gov, where you can choose continuous enrollment (renewed every year going forward) or one-time enrollment for the current year only. If you can’t verify your identity online and your adjusted gross income is below $84,000 (or $168,000 for married filing jointly), you can apply using Form 15227 through the IRS website. Taxpayers who don’t qualify for either path can request an IP PIN in person at a Taxpayer Assistance Center with valid ID.
A few habits also cut your risk: file as early in the season as you can, use a secure connection when e-filing, and act immediately if the IRS or your tax software tells you a return has already been filed under your Social Security number.