What Is an IRS Identity Verification Letter?
A tax return can be flagged for extra scrutiny not because anything on it looks wrong, but simply because the IRS wants to confirm the person filing it is who they claim to be.
The short answer
An identity verification letter is a notice the IRS sends when a filed return trips a fraud-prevention filter, asking the filer to confirm their identity before the return is processed further. It doesn’t mean a return has an error — it means the return hasn’t yet been confirmed as genuinely coming from the person named on it, often because the filing pattern looked unusual compared to prior years or matched signs commonly associated with identity theft.
Why these letters get sent
Because tax-related identity theft involves filing a fraudulent return in someone else’s name to claim a refund, the IRS runs automated checks designed to catch mismatched or suspicious filings before a refund goes out. A letter can be triggered by something as simple as filing from a new address, using new tax software, or a return that otherwise deviates from an established filing pattern — it isn’t necessarily a sign that anything is actually wrong.
General verification methods
The letter typically offers more than one way to verify identity, which can include an online identity verification process, a phone line, or occasionally an in-person appointment. Each method generally asks for information from the return in question, along with other identifying details, to confirm the filing was legitimate. The letter itself specifies which methods are available for that particular case.
How it affects a refund
Until identity is verified, the return generally sits unprocessed, which means any expected refund is on hold. This is one of the more common reasons a refund is delayed well past the usual processing window, and it’s separate from other reasons a return might take longer, such as a notice requesting additional information about a specific line item.
What to check before responding
- Confirm the letter is genuine. These letters arrive by mail, and it’s worth being cautious of any unsolicited call, text, or email claiming to represent the same request.
- Have the return and prior-year information on hand. Verification generally asks for details drawn from both the current filing and a previous year’s return.
- Respond by the method and deadline listed. Delaying the response only extends how long the return sits unprocessed.
If verification confirms fraud
If the process reveals that someone else filed using a person’s information, that discovery opens a separate identity-theft resolution process, distinct from simply completing verification on a legitimate return. In that situation, people sometimes also consider a broader identity-protection step like a credit freeze, separate from anything the IRS itself handles, and a tax transcript can later help confirm exactly what was filed and processed on the account once the situation is resolved.
A practical habit
Filing a complete, consistent return each year, and keeping prior-year records accessible, makes it easier to respond quickly if a verification letter does arrive, since the process depends heavily on having those past details on hand.