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 Certified Assessing Officer (MCAO)
The State Tax Commission is pleased to announce that the January 2026 MCAO Program is now open for enrollment. The nine-month MCAO program covers ten chapters with weekly virtual classroom sessions. Classroom sessions will either be on Monday or Tuesday evenings and breaks are scheduled into the program. Specific classroom dates will be given after acceptance to the program. Applications must be received (not postmarked) by the STC no later than December 5, 2025. This session is limited to 70 students.
January 2026 MCAO Program Application
MCAO Application Review Process
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