Idaho State Tax Commission

Identity Verification Info

tax.idaho.gov/idverify

The Tax Commission might need to verify your identity. This helps safeguard your information and keeps your refund from going to criminals.

You could receive one of three letters:

  • A PIN letter that asks you to enter a personal identification number (PIN) we provided to confirm you filed the tax return we received
  • A quiz letter that asks questions to verify your identity
  • An ID verification letter that asks you to provide copies of documents
If you received one of these letters, we can't pay your refund or future refunds until you respond.

How do I respond to a letter I received from the Tax Commission?

Is this letter I received really from the Tax Commission?


Received a PIN letter?

Follow the instructions in the letter within 30 days of receiving it.


Received a quiz letter?

Only you can take the quiz.

Follow the instructions to take the quiz within 30 days of receiving the letter.

If you can't take the quiz, don't pass the quiz, or don't want to take it, you or your legal representative** can upload, mail, or bring the required documents to the Tax Commission.

** Your legal representative can be a legal guardian or someone you've given power of attorney to.


Received an ID verification letter asking for documents only?

Follow the instructions in the letter within 30 days of receiving it.



Required documents

Please don't provide original documents; we can't return them.

Send required documents:

  • If you got a quiz letter but didn't take or pass the quiz.
  • If you got the ID verification letter.

You must provide a copy from each of the following four categories below:

  1. A copy of page one only of the letter you received.
  2. A copy of your Social Security card, ITIN letter, or Medicare benefits statement.
  3. A copy of a government-issued identification that has your full name.
    Examples include but aren't limited to:
    • Driver's license or Star Card (current or expired less than a year)
    • Idaho identification card
    • Passport
    • Military identification
  4. A copy of a document that an organization mailed you less than three months ago showing your full name and address. It must match the name and address used on your current tax return.
    Examples include but aren't limited to:
    • Utility bill (gas, electric, cable, cell phone, etc.)
    • Bank statement (page one only)
    • Payroll stub
    • Tax bill
    • Insurance policy (vehicle, homeowners, renters, health, life)
    • Credit card statement (page one only)
Contact the issuing agency (e.g. Social Security Administration, IRS) if you've lost the required government-issued identification.

Returning documents

You can upload, mail, or bring copies of documents to a Tax Commission office. We can't accept documents by email or fax.

Upload the documents

Upload copies securely online at tax.idaho.gov/respond. You don't need a TAP account.

Mail the documents

Mail your identity verification letter, along with copies of the required documents, to:
Attn: Tax Discovery Bureau
Idaho State Tax Commission
PO Box 36
Boise, ID 83722-0410

We recommend you use registered or certified mail to track your documents and verify delivery.

Bring the documents to a Tax Commission office

Bring your identity verification letter, along with copies of the required documents, to one of our offices. See Office Hours and Locations

Page last updated June 22, 2021. Last full review of page: December 23, 2019.

This information is for general guidance only. Tax laws are complex and change regularly. We can't cover every circumstance in our guides. This guidance may not apply to your situation. Please contact us with any questions. We work to provide current and accurate information. But some information could have technical inaccuracies or typographical errors. If there's a conflict between current tax law and this information, current tax law will govern.