United States — Michigan · Administrative guidance
Michigan changes tax-service channels from November
On 30 October 2026, Michigan’s Department of Treasury announced an expansion of its tax eServices from 12 November, with temporary service interruptions during the transition. Businesses should check which tax accounts and filing channels are affected.
- Official document:
- Michigan Treasury announcement30October2026: eServices expansion12November and service interruptions; administrative route, no statutory amendment identified
- Development date:
- 2026-10-30
The expansion covers Treasury-administered city income taxes, wholesale marijuana tax, marijuana retailers excise tax, motor-fuel and tobacco taxes, and 9-1-1 accounts. Detroit taxpayers and businesses gain online filing, payment and registration services. Wholesale marijuana taxpayers gain online filing beyond existing payment services.[1]
Marijuana retailers and city employer-withholding bulk filers move from Michigan Treasury Online to the new platform, while the separate MiMATS motor-fuel and tobacco system merges into it. Sales, use and state withholding-tax filing remain in their existing systems: this is not a migration of every Michigan tax account.[1]
Treasury warns of web-platform interruptions and temporary call-centre closures. Groups should check tax-specific outage guidance, sign-in arrangements and outstanding transactions. The announcement asks taxpayers to plan around filing deadlines; it does not announce a general extension or change tax rates.[1]
Official sources
- [1] Michigan Treasury eServices to Expand Nov.12
Michigan Department of Treasury · Document date: 2026-10-30
Entire substantive announcement315–355 read: actualpublication317, November12 service list328–334, call-centeroutages338–344, weboutages345, preparation349–355. Header/navigation not substantive evidence.