Verifying Your Individual Income Tax Return

If you receive an Identity Verification Letter or a PIN Verification Letter from the department, we need additional information from you to verify that a return wasn’t fraudulently filed on your behalf. We cannot process your refund until you provide us with this information. Please follow the instructions on the letter to verify your identity.

If you need assistance, please contact us at (406) 444-6900.

How to Verify Your Individual Income Tax Return

Online: Verify online using the TransAction Portal

By Mail:

Please Note: We do not accept documents via email. 

If you have moved since filing, please send proof of your current mailing address and a written request to update the address we have on file.