Mich. Comp. Laws § 206.352: Direct deposit of tax refund.

Sec. 352.

For the 1997 tax year and each tax year after the 1997 tax year, a taxpayer who is due a refund determined under section 30 of Act No. 122 of the Public Acts of 1941, being section 205.30 of the Michigan Compiled Laws, may request a direct deposit of that refund to a financial institution of the taxpayer's choice that is located in the United States by completing a direct deposit form prescribed by the department and attaching the completed form to the taxpayer's annual return.

The department shall comply with a request under this section unless the request is incomplete or defective in a manner that precludes the department from honoring the request. If the department does not honor the request, the department shall issue a warrant, as provided in Act No. 122 of the Public Acts of 1941, being sections 205.1 to 205.31 of the Michigan Compiled Laws, and at the same time provide the taxpayer with a written explanation including the specific reason for not honoring the taxpayer's request for direct deposit.