Calendar Year Filers: Return and payment due April 15; July 15; October 15; and January 15. Direct deposit into a personal checking or savings account; or Direct deposit to a child support debit card.Important - please review your tax form as there are changes to the documentation required to be submitted! Payments are due on or before last day of every month. Payment Types Accepted: online payments, money orders and cashier's checks. Michigan Legal Help has tools to fill many kinds of forms but we do not cover all areas. You may have a blank form that you need to fill out on your own. UM-Flint will accept payments on student charges in the form of cash, checks, money orders, cashiers checks, E-Check, and credit cards.