On Wednesday, August 20, 2025, IIT phone lines will be down for maintenance. However, you can access tax account information or ask a question online.
Marihuana Retailers Excise (MRE) Tax
Homeowner's Principal Residence Exemption
Property Tax Forfeiture and Foreclosure
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A taxpayer requesting a waiver of penalty must do so in writing and provide reasonable cause as outlined in the Revenue Administrative Bulletin 2022-24.
Mail to:
Michigan Department of Treasury
Collection Services Bureau
P.O. Box 30199
Lansing, MI 48909