Michigan Treasury moves more taxes online Nov. 12, with web outages starting tonight and call centers closed Nov. 4–6

LANSING — Michigan taxpayers who pay city income taxes, and businesses that pay marijuana, motor fuel or tobacco taxes, will manage those accounts through a new state online portal starting Thursday, Nov. 12. The switch comes with service interruptions between now and then.

The Michigan Department of Treasury said Friday that several of its web platforms would begin going offline at 5 p.m. Oct. 30, and that some of its call centers will close for up to three days the week after Election Day. All systems are scheduled to be running again on Nov. 12.

Treasury’s advice is simple: if you need to make a payment or file a return in one of the affected systems, do it before the switch.

The phone lines that will be closed or limited, according to Treasury:

Business tax call centers, closed Nov. 4 and 5. Individual income tax call centers, closed Nov. 5 and 6. Call centers for city income taxes, marijuana taxes, motor fuel and tobacco taxes, and miscellaneous taxes and fees, closed Nov. 4 through 6. Collections lines will offer limited service Nov. 4 through 6, and some phone services will be limited Monday, Nov. 2.

Once the switch is done, the Michigan Treasury eServices portal will handle Treasury-administered city income taxes, the wholesale marijuana tax, the marijuana retailers excise tax, the motor fuel tax, the tobacco tax and 9-1-1 accounts. City of Detroit taxpayers and businesses will get full online services, including filing, paying and registering a business. The state’s separate motor fuel and tobacco tax system, known as MiMATS, will be folded in.

Sales, use and withholding taxes are not moving. Those still go through Michigan Treasury Online, known as MTO.

The change will also matter in Flint, where the city income tax moves to the state on Jan. 1.

“We apologize for any inconvenience that may occur while systems and call centers are temporarily unavailable,” said Kavita Kale, who leads Treasury’s Revenue Services programs.

Treasury said people with existing MiLogin accounts may be able to use their current sign-in. Instructions for each tax type and a list of which web systems are down are posted at michigan.gov/MiTreasuryeServices.

Sources:
Michigan Department of Treasury, “Michigan Treasury eServices to Expand Nov. 12,” Oct. 30, 2026 (new tax types, Detroit services, MiMATS merger, MTO unchanged, call center closures, Oct. 30 outages, Kale quote, MiLogin), https://www.michigan.gov/treasury/news/2026/10/30/michigan-treasury-eservices-to-expand
Michigan Treasury eServices information page, https://www.michigan.gov/taxes/mitreasuryeservices
Photo: Brett Marr, “State Govt Complex.jpg,” Wikimedia Commons, CC BY-SA 3.0, cropped, https://commons.wikimedia.org/wiki/File:State_Govt_Complex.jpg

Lansing

Tags: Lansing · Michigan Treasury · Taxes · City Income Tax · Small Business · Detroit