Michigan Compiled Laws, Chapter 493. Regulatory Loans § 493.71

Sec. 21.(1) A licensee or registrant may charge, contract for, receive, or collect on a secondary mortgage loan an interest rate not exceeding the interest rate permitted by the credit reform act, 1995 PA 162, MCL 445.1851 to 445.1864. Interest on a secondary mortgage loan under this act shall not be added or deducted in advance but shall be computed on the basis of the actual unpaid balance of the principal of the loan on a daily or monthly basis for the time actually outstanding until the loan is paid in full.

(2) This section does not prohibit a lender from offering the borrower, in connection with a secondary mortgage loan that involves other than open-end credit, an option to pay a prepaid finance charge in exchange for a lower contract interest rate or to charge a prepayment fee in the amount permitted under section 1c of 1966 PA 326, MCL 438.31c.