5. Why did I receive an assessment notice after mailing my payment?

Allow 30-45 days to process your payment. If the payment you submitted has already cleared your bank account, provide a copy of the front and back of the cashed/canceled check or money order to:

Michigan Department of Treasury
City Income Tax Administration
PO Box 30741
Lansing, MI 48909

Include a copy of the notice with your correspondence so it can be credited to your account.

Note: To avoid any future processing delays, always include the appropriate voucher when mailing your payment. This ensures timely and accurate processing of your payment.