Mich. Comp. Laws § 111.7

Sec. 7. Within 60 days after the confirmation, and where the council have decided to have the taxes levied and collected in 2 installments, and the roll is the city or July roll, on or before the first day of June following the confirmation of such rolls, as above provided, each supervisor shall deliver a certified copy of his assessment roll to the city clerk, to be filed in his office for the use of the council.