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.
Business Tax Forms
Tax forms are tax year specific. Any altering of a form to change a tax year or any reported tax period outside of the stated year of the form will result in an invalid filing and will not be accepted by Treasury.