Overview

When the IRS flags a return for identity verification (common letters include 5071C and 5747C), they ask for proof you are who you say you are. A clear, organized evidence checklist reduces follow-up requests and shortens refund hold times. The IRS’s identity resources explain why verification is required and outline response options — see IRS: Identity Theft and the IRS for details.

Essential evidence checklist (documents to gather)

  • Government photo ID (primary): U.S. driver’s license, state ID, or passport. Provide a legible copy of the front and back if required.
  • Social Security proof: Social Security card or SSA correspondence showing your SSN. If unavailable, an official SSA statement can help.
  • Address verification (secondary): Recent utility bill, bank statement, or lease agreement dated within the last 60 days.
  • Filing and income documents: W-2s, 1099s, Schedule K-1s, pay stubs, or other documents that match the income reported on the return.
  • Filing history or prior returns: A copy of the tax return in question and, if relevant, prior-year returns to show filing pattern.
  • Identity-theft documentation (if applicable): Identity Protection PIN (IP PIN) confirmation letter, FTC identity-theft report, or police report if you’ve reported fraud.
  • Supporting statements: A signed, dated statement explaining discrepancies or why documents are missing (for example, name changes or recently moved address).
  • Power of attorney (if someone else responds): Form 2848 authorization or written POA that matches the IRS requirements.

How to prepare documents

  • Make clear, high-resolution copies and keep originals. The IRS accepts scanned PDFs or photocopies when submitting by mail or through approved online channels.
  • Include a cover sheet: taxpayer name, SSN (last four digits if you prefer privacy on mailed copies), the IRS letter number, and a short list of included documents.
  • Date and sign any written statements you include.
  • When mailing, use certified mail with tracking or another service that provides proof of delivery.

How to submit your evidence

  • Online: The IRS provides online identity verification options for many letters; follow the instructions in the letter and use official IRS.gov links only. Online verification is usually the fastest option.
  • Phone: Some letters include a phone number or instructions to call the IRS. Use the phone numbers shown on the IRS letter or on IRS.gov to avoid impersonators.
  • Mail: Follow the address and instructions in the letter exactly. Keep copies and proof of mailing.
  • In person: Taxpayer Assistance Centers (TACs) can accept identity documents by appointment; check IRS.gov for local TAC services and appointment rules.

Timing and what to expect

  • Respond as soon as possible—many IRS letters ask for a response within 30 days. Delays can hold refunds for weeks or longer.
  • After the IRS receives acceptable evidence, processing resumes. Keep tracking numbers and copies; the IRS may take several weeks to update your return status.

Common mistakes to avoid

  • Sending poor-quality copies that obscure text or photos.
  • Omitting the IRS letter number or using the wrong mailing address.
  • Waiting to respond: do not ignore the letter.
  • Providing inconsistent names, addresses, or SSNs—clarify any name changes with supporting documents (marriage certificate, court order).

When you don’t have a requested document

  • Contact the IRS using the contact information on the letter to ask for alternatives.
  • Provide a signed explanation and substitute documents (for example, an SSA printout if you can’t find a physical card).
  • Consider filing Form 14039 (Identity Theft Affidavit) if you believe your identity was used fraudulently; see the IRS identity page for guidance.

Professional tips from practice

  • Keep a single “verification folder” each tax year with W-2s, 1099s, ID copies, and utility bills to speed any future responses.
  • If working with a tax professional, file Form 2848 so they can communicate directly with the IRS and track your case.
  • When in doubt, err on the side of over-documenting—provide corroborating documents rather than fewer items.

Related FinHelp resources

Frequently asked (brief)

  • How fast should I respond? Respond immediately—letters commonly request response within 30 days.
  • Can I verify online? Many verifications can be completed online; follow only IRS.gov links from the letter.
  • Should I hire a tax pro? If you suspect identity theft or the case is complex, a licensed tax professional can help and file Form 2848 to represent you.

Authoritative sources & further reading

Professional disclaimer

This article is educational only and does not constitute legal or tax advice. For help with a specific IRS letter or identity-theft situation, consult a licensed tax professional or the IRS directly.