IRS Identity Verification Letters (5071C, 4883C, 5747C, 12C) Explained

Use this guide to understand common IRS identity/verification letters and complete verification safely without scams or duplicate filings.

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TL;DR

✓ Use only the contact methods and URLs printed on the IRS letter or official IRS account tools.
✓ Prepare your prior-year and current-year return details; verification often asks for line items.
✓ Identity letters commonly pause refunds until verification is completed.
✓ Do not file another return unless the IRS instructs it.

Quick Navigation

Symptoms Root Causes Step-by-step fixes What NOT to do If it persists Code directory Related guides & hubs FAQ References

Symptoms / When you see this

✓ You receive letters like 5071C, 4883C, 5747C, or 12C.
✓ Refund processing stops or delays after the letter date.
✓ IRS account tools prompt identity verification.

Root causes (grouped)

✓ Identity verification triggers from screening and mismatch checks.
✓ Missing documents or incomplete return package requests.
✓ Account access/verification prerequisites for online services.

Step-by-step fixes (safe, prioritized)

✓ Read the letter instructions and deadline; follow the specified verification channel.
✓ Gather: return copy, W-2/1099 data, and prior-year filing facts.
✓ Complete verification once through official channels and keep confirmation.
✓ Monitor transcript/account for updates; avoid duplicate submissions.

What NOT to do

✓ Do not use third-party phone numbers or links to verify identity.
✓ Do not email sensitive documents.
✓ Do not file duplicate returns to “restart” processing.

If it persists (escalation checklist)

✓ Keep letter copies, confirmation IDs, and dates of verification.
✓ If deadlines are involved, use official IRS escalation channels or tax professional help for complex cases.

Code directory within this guide

✓ Letter instructions vary. Always follow the letter’s official steps for your case.

Code	Meaning	Next step
4883C	Identity verification request — IRS Letter 4883C requests identity verification, often requiring a call or official verification workflow before processing continues.	Follow the checklist on the code page
5071C	Identity verification request — IRS Letter 5071C requests identity verification before the IRS will continue processing a return or release a refund.	Follow the checklist on the code page
5747C	Identity verification (in-person/appointment) — IRS Letter 5747C requests identity verification and may require an appointment or additional verification steps.	Follow the checklist on the code page
IRS identity verification	Identity confirmation required — This status indicates that the IRS requires identity confirmation before completing processing.	Follow the checklist on the code page

Tip: If your exact code isn’t listed, use the closest hub link above and browse related prefixes or message patterns.

FAQ

Is an identity letter proof of fraud?

Not necessarily. Screening can trigger verification even for legitimate returns.

Should I call a number from a random email/text?

No. Use only official IRS contact methods printed on your letter or official IRS sites.

Can verification speed up my refund?

Verification is often required before processing can continue; completing it correctly prevents additional delays.

What documents should I prepare?

Return copy, income forms (W-2/1099), and prior-year filing details.

Should I send documents if the letter doesn’t ask?

Usually no. Send only what is requested to avoid misrouting and delays.

How do I know verification is complete?

Use the confirmation from the verification process and monitor your account/transcript for updates.

What if I already filed and then got a 12C letter?

Respond with the specific missing items requested; do not refile unless instructed.

When should I get help?

When deadlines are near, when large amounts are involved, or when you can’t complete verification with official tools.

References / Notes

✓ IRS identity verification instructions on the letter
✓ IRS account tools
✓ Official IRS scam awareness guidance