IRS Letter 4883C: Verify Your Identity by Phone

Why did the IRS send Letter 4883C?

The IRS 4883C instructions say the IRS received a Form 1040-series return using your SSN or ITIN and needs to verify your identity and the return before continuing processing. Receiving the letter does not, by itself, prove that the return was fraudulent.

If you filed it, prepare to confirm the requested information. If you did not file a return for the stated tax year, tell the IRS; someone may have used your information. Our fraudulent-return guide covers the related reporting and filing questions.

Which phone number should I call?

Use the Taxpayer Protection Program hotline printed on your 4883C letter, as the IRS directs. Keep the number, notice year and response instructions together. If the letter seems unfamiliar, check it against the official IRS page before providing information.

This verification hotline does not provide general tax-account or refund-status information. RefundIQ’s 844-754-1040 is a separate assistance number; calling RefundIQ does not complete IRS verification.

What should I have ready for the call?

• The 4883C letter.
• The Form 1040-series return named in the letter.
• A return from a different prior year, if you filed one and have it available.
• Supporting records for those returns, including relevant W-2s, 1099s and Schedules C or F.

These are the IRS’s listed records. W-2s and 1099s are not tax returns. Use the phone-verification checklist and obtain missing return copies from your filing software or preparer before the call where possible.

Can a preparer or family member help?

The IRS representation instructions allow an authorized representative to call on your behalf when a completed Form 2848 is on file. The IRS encourages you to be available to help verify your identity. If someone assists without Form 2848, you must call together and you must participate.

For a fiduciary relationship, the same IRS page refers to Form 56. Do not assume that preparing a return automatically gives someone authority to handle every IRS verification step or access your online account.

What if I cannot verify by phone?

The IRS says it will ask you to schedule an appointment at a local IRS office and bring the listed documents for in-person verification. Follow that referral and its instructions. The in-person verification guide explains appointment preparation; use the requirements given for your case.

If your correspondence instead says 6330C, the IRS procedures identify it as a pilot equivalent handled under 4883C procedures. Start with the instructions on the letter you actually received.

Should I send Form 14039 instead?

The 4883C page explicitly says not to file Form 14039 for this letter; supply the information requested through its verification process. Keep separate suspected identity-theft situations within the existing conditional Form 14039 guide. Do not send an affidavit simply to avoid the verification call.

What happens after the call?

Until the IRS hears from you, it says it cannot process the affected return, issue a refund or credit an overpayment. After successful verification, the IRS describes up to nine weeks for a refund or overpayment credit; other problems can add delays. Follow the representative’s instructions and read the post-verification guide.