Letter 4883C: Identity Verification Required
The IRS suspects potential identity theft and needs you to verify your identity before processing your return.
Deadline
30 days from notice date
Do I owe money?
No
What does Letter 4883C mean?
Letter 4883C means the IRS flagged your tax return as potentially filed by someone other than you. This is a protective measure against tax-related identity theft — someone may have filed a return using your Social Security number to claim a fraudulent refund. Your legitimate return is being held until your identity is verified. This does not mean you're in trouble — it means the IRS is protecting you.
What should you do next?
- 1Call the IRS Identity Verification number shown on the letter (typically 1-800-830-5084) within 30 days
- 2Have ready: the 4883C letter, your prior year tax return, the current year return you filed, and a photo ID
- 3If you did not file the return in question: tell the IRS — this means someone filed fraudulently using your SSN
- 4Do not use IRS.gov to verify for 4883C — this letter specifically requires a phone call
Frequently asked questions
What if I didn't file a return this year — why did I get 4883C?
If you received 4883C but didn't file, someone else used your SSN to file a fraudulent return. Call the IRS immediately, report it to IdentityTheft.gov, and place a fraud alert with the credit bureaus.
How long does identity verification take after the call?
After a successful 4883C verification call, your return typically processes within 9 weeks. Refunds are delayed until the process is complete.
Can I verify online instead of calling?
4883C specifically requires a phone call. Other IRS identity notices (like 5071C) allow online verification at idverify.irs.gov, but 4883C does not — you must call.
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Explain my noticeLast updated: 2026-05-18