IRS Notice Letter 5071C
Identity Verification Request
Letter 5071C (and related 4883C / 5747C / 6331C) asks you to verify your identity before the IRS processes a return filed under your SSN. The refund is frozen until verification completes.
Tax Attorney · Villanova University School of Law · Admitted in Delaware, New Jersey, United States Tax Court
Notice Letter 5071C in Plain English
Letter 5071C (and its close relatives 4883C, 5747C, and 6331C) is an identity verification letter. The IRS's fraud filters flagged your return for possible identity theft and is holding the refund until you prove you filed it. Until you verify, the return sits — and any refund is frozen.
Why the IRS sent you a Letter 5071C
Your return matched patterns the IRS's Return Review Program associates with identity theft.
A refund was filed under your SSN by someone else earlier in the season and yours arrived second.
Address, income, or dependent data on the return differs meaningfully from prior years.
What Happens If You Ignore Notice Letter 5071C
Refund frozen indefinitely. If you don't verify, the IRS discards the return as suspected identity theft — permanently forfeiting that year's refund.
Every day you wait, penalties compound, interest accrues, and your options shrink. The IRS does not negotiate well with silence — they escalate.
What To Do About Notice Letter 5071C
Verify at idverify.irs.gov if offered, or call the number on the letter with prior-year return in hand. If you did NOT file, file Form 14039 immediately and request an IP PIN.
- 1
Verify online at idverify.irs.gov if the letter offers that option — it is faster than phone verification and confirms in real time.
- 2
If phone verification is required, gather the prior-year return, current-year return, and any supporting documents (W-2s, 1099s) before calling — the agent will not proceed without them.
- 3
If you did NOT file the return the IRS is asking about, tell the agent immediately and file Form 14039 (Identity Theft Affidavit).
- 4
Confirm the address on file and request an IP PIN for future years to prevent recurrence.
- 5
Expect a 6–9 week refund delay even after successful verification.
A Senior Tax Attorney's Take on Letter 5071C
Identity-verification cases are usually procedural, but the ones that go wrong go very wrong — endorsed fraudulent returns can take 12+ months to unwind. When in doubt, verify carefully or not at all until you can compare the IRS's version to your records line by line.
Call (877) 829-5267Costly Mistakes People Make With Notice Letter 5071C
Ignoring the letter because 'the refund will come eventually' — the IRS discards unverified returns after roughly 30 days and the refund is permanently forfeit.
Verifying a return that you did not actually file, thereby endorsing an identity thief's fraudulent return.
Not requesting an IP PIN after resolution, which leaves the same vulnerability in place for next year.
IRS Notices Related to Letter 5071C
These are the notices the IRS most often sends before, after, or alongside a Letter 5071C. Read the related ones to understand where you are in the collection sequence.
Tax Resolution Services That Resolve a Letter 5071C
Senior tax attorneys at McCauley Law Offices use these strategies to stop, settle, or unwind a Letter 5071C notice.
Primary Sources & Authority
We cite the underlying IRS publications and statutes so you can verify everything on this page.