What happens if I don’t pay my taxes by the due date(s)?

Any summer taxes paid after the due date, will incur interest charges at 1% per month but is still due to the Township Treasurer. Any property taxes paid after the due date of February 28/29th will incur interest and penalty fees, and will then need to be paid to Mackinac County Treasurer at 100 S Marley St, St Ignace, MI 49781, they can be reached at 906-643-7318, As all delinquent taxes get turned over to Mackinac County Treasurer March 1 of each year.