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.
Filing Requirements 6. If I'm registered for the MBT what do I need to do to register for the CIT?
You are automatically registered for the CIT if you are currently registered for the MBT and meet the definition of "taxpayer" found in the CIT at MCL 206.611(5).