The Michigan Department of Treasury has been made aware that some "Reminder of Tax Due" letters sent to taxpayers contain an incorrect toll-free (1-800) TTY number, which may connect callers to a potential scam. Taxpayers with questions regarding unpaid individual income taxes are asked to contact the Treasury directly at 517-636-4486. We apologize for any confusion or concern this may have caused.
Michigan Treasury Online
Michigan Treasury Online Help Center
Michigan Treasury Online (MTO) is a Treasury web service offering people the ability to interact with Treasury on behalf of businesses registered for taxes in Michigan. MTO allows responsible parties of a business, their representatives, or anyone with a legitimate purpose secure, 24/7 online access to Treasury business tax accounts to electronically file and pay business taxes, update account information, and view Treasury issued correspondence.