Mich. Comp. Laws § 490.412: Check cashing fees.

Sec. 412.

Except as provided in subsection (2), a domestic credit union shall not contract for, receive, impose, assess, or collect a charge or fee for the cashing of a check that exceeds 1 of the following percentages of the face amount of the check, as applicable:

Five percent for a payroll, pension, or government check.

Seven percent for a check from an insurance company, including, but not limited to, a private health or disability insurance plan payment.

Ten percent for a personal check, money order, or other check.

A domestic credit union may contract for, receive, impose, assess, or collect a charge or fee that does not exceed $25.00 for the first check the credit union cashes for an individual.