Main Content Act 11 of 1869 friendly link printer friendly bills affecting mcl index link Search within this Statute for INTEREST ON DUE AND UNPAID INTERESTAct 11 of 1869AN ACT relating to interest upon installments falling due upon written contracts. History: 1869, Act 11, Eff. July 5, 1869 The People of the State of Michigan enact: DocumentTypeDescription Section 438.101SectionInterest on due and unpaid interest; rate.