How do I verify the letter/notice I received was sent by the Michigan Department of Treasury?

You may verify the Letter/Notice you received was sent by the Michigan Department of Treasury using self-service.

Click on the above link and follow these steps:

1. Select the “Inquiries” option

2. Then select “Inquire about Other Topics”

3. You will be asked to enter the following information for security reasons:

• Primary filer’s Social Security number
• Primary filer’s last name
• Tax year
• Filing status
• Adjusted Gross Income (AGI)/Total Household Resources (THR)
  • If your AGI is a negative number, enter "-" after the number. Example: 1045-

Note: If you are unable to authenticate using your current tax year information, select the previous tax year for authentication.  When you submit your question, explain that you selected a previous tax year for authentication. Include the AGI/THR and tax year for which you are inquiring.