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.
Additional Details Categories
To view additional details on the Corporate Income Tax, choose from the categories below.
| Tax Base | Insurance Companies / Financial Institutions |
| Nexus and Apportionment | Unitary Business Groups |
| Credits | Filing Requirements |
| Forms & Instructions | FAQs |