Michigan Accounts Receivable Collection System

The Michigan Accounts Receivable Collection System (MARCS) is a Treasury program operated by a privately owned collection agency that has contracted with the State of Michigan to collect debts on behalf of the Department of Treasury. They may be reached by phone at 800-950-6227. Their fax number is 517-272-5562. Operating hours are Monday through Thursday 8AM to 9PM, Friday 8AM to 6PM and Saturday 8AM to noon.