IRS Letter 4883C: identity verification required

The IRS's identity theft filters flag returns that look unusual. Letter 4883C asks you to call and answer questions to prove you filed the return. If you didn't file, telling the IRS stops the fraudulent return. Have the letter, the return listed, a prior-year return (if you filed one) and supporting documents like W-2s and 1099s nearby. The related Letter 5071C usually allows online verification instead.

Identity-verification letters are not collection notices. The IRS holds the return — and any refund — until you confirm who you are. If you don't respond, the return generally isn't processed, which can lead to later balance or missing-return notices.

Scam letters copy IRS formatting, so confirm a Letter 4883C before acting on it. Log in to your IRS Online Account — most notices, balances and payment history appear there — or request an account transcript. A genuine notice shows a notice or letter number (usually in the top or bottom right corner), the tax year, and explains your rights. If you call, use a number you find on IRS.gov, not a number printed only on a letter you're unsure about. The IRS doesn't demand payment by gift card, prepaid debit card, cryptocurrency or wire to an individual, and it doesn't threaten immediate arrest.

Respond as soon as possible. The return — and any refund — is held until you verify.

There's nothing to dispute — you're simply confirming your identity. If you didn't file the return in question, say so when you verify; the IRS will remove the fraudulent return from your account, and you may want an Identity Protection PIN for future filings.

The return generally won't be processed, so any refund stays frozen, and an unprocessed return can trigger later missing-return or balance notices.

Once your identity is verified, check your IRS Online Account to confirm the return was processed. If someone else filed using your information, file Form 14039 if the IRS asks you to, request an Identity Protection PIN for future years, and watch for related notices. If the return shows you owe, the payment options are the same as any balance: a short-term plan of up to 180 days, an installment agreement for balances of $50,000 or less online, or Currently Not Collectible status in a hardship.

You don't need to pay anyone to respond to a Letter 4883C. The Taxpayer Advocate Service, an independent organization inside the IRS, helps people whose problems aren't being resolved through normal channels or who face significant hardship. Low Income Taxpayer Clinics offer free or low-cost representation to eligible taxpayers, including in disputes with the IRS. Volunteer programs such as VITA can help prepare missing returns. If you do hire paid help, choose a credentialed professional — a CPA, enrolled agent or attorney — who can represent you before the IRS with Form 2848, and be wary of anyone who guarantees an outcome, demands large upfront fees, or tells you to stop communicating with the IRS. See red flags to watch for.

1. Read the whole notice and note the date, tax year and any deadline.
2. Verify it in your IRS Online Account or with a transcript.
3. Gather records — the return, payment proof and any documents the notice mentions.
4. Decide: agree and pay/verify, dispute with documentation, or request the hearing or appeal the notice describes.
5. Respond in writing or by the method shown, before the deadline, and keep copies and proof of mailing.
6. Get help if needed. You can authorize a CPA, enrolled agent or attorney with Form 2848, and the Taxpayer Advocate Service or a Low Income Taxpayer Clinic may help for free.

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