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What should I do if the routing transit number on my return is incorrect?

What should I do if the routing transit number on my return is incorrect?

The Michigan Department of Treasury cannot add or make any changes to the Routing Transit Number (RTN) after the return has been received.  

If your RTN is incorrect and the financial institution has returned the deposit, a refund check will be mailed to you within 6 weeks after receipt of the returned direct deposit attempt.