Modernizing Michigan's Motor Fuel and Tobacco Tax System

Motor Fuel Tax and Tobacco Tax are moving from the stand-alone MiMATS platform to the MiTreasury eServices - Business Portal in the new Michigan Treasury eServices platform.

• October 30, 2026: At 5 p.m., the MiMATS web platform will be decommissioned. Ensure all required filings and payments due on or before October 30 are submitted. Taxpayers who file and pay late may incur penalties and interest because tax returns or payment cannot be processed until November 12, 2026.
• November 12, 2026: Motor Fuel Tax and Tobacco Tax will be available in Michigan Treasury eServices.

Registration

Motor Fuel Tax, Tobacco Tax, Aviation Fuel Registrant, and Motor Fuel Statutory Refund accounts will now be registered through a singular Business Registration process in MiTreasury eServices - Business Portal. This replaces multiple registration paths previously used in MiMATS.

Power of Attorney (POA)

POA submissions will no longer be sent through MiMATS. A business administrator can submit POA authorizations in MiTreasury eServices - Business Portal. Third parties cannot submit POA authorizations electronically. Third parties with a POA on file with Treasury will still need to submit access requests through Michigan Treasury eServices to see and send tax information.

Communicating with Treasury Online

• Send questions to Treasury using the Send a Message link when logged in to Michigan Treasury eServices. Send a Message should not be used to respond to letters.
• Respond to a Treasury letter using the Respond to a Letter link when using Guest Services on a Michigan Treasury eServices Portal landing page.

The Michigan Treasury eServices web platform is comprised of two portals. How you use Michigan Treasury eServices depends on your role, the tax type, and what you need to do.

Role and Portal

Responsible parties of the entity (e.g., owners, officers, partners), employees of an entity who are responsible for tax or business matters, and third parties (e.g., tax professionals, service providers, attorneys) all use the MiTreasury eServices - Business Portal.

Tax Types

Most Motor Fuel Tax and Tobacco Tax online interactions including registration, filing returns, making payments, viewing/updating tax account information, and secure messaging, takes place in the MiTreasury eServices - Business Portal.

• Individuals claiming a Motor Fuel Statutory Refund will use the MiTreasury eServices - Citizen Portal.
• Individuals with Tobacco Enforcement responsibilities will use the MiTreasury eServices - Citizen Portal.

What Do You Need to Do?

What you can see and do within Michigan Treasury eServices depends on the access level you choose or achieve. To reach the Logged-in Services or Connected Services levels, you must sign in.

For sign in services, Michigan Treasury eServices uses MiLogin (the State of Michigan’s online identity management and authentication network). MiLogin has two different environments for sign-in services:

• The MiTreasury eServices - Business Portal leverages the MiLogin for Business environment.
  • If you have a username and password for Michigan Treasury Online (MTO), those credentials will work to sign in to Michigan Treasury eServices.
  • If you do not use MTO, determine if you already have a profile or if you need to create a new username and password by reviewing the Business Portal Logging In guide.

• The MiTreasury eServices - Citizen Portal leverages the MiLogin for Citizen environment. Determine if you already have a profile or if you need to create a new username and password by reviewing the Citizen Portal Logging In guide.

Motor Fuel Tax and Tobacco Tax stakeholders can restore the access they had in MiMATS for a limited time. Once Motor Fuel Tax and Tobacco Tax are available in Michigan Treasury eServices, you will be able to file, pay, and see tax account information on day one. Within 6 months from November 12, 2026, take the following steps:

1. Go to michigan.gov/mitreasuryeservices.
2. Select the MiTreasury eServices - Business Portal.
3. Use the Sign in with MiLogin for Business button.
4. Follow the prompts to sign in with your MiLogin for Business credentials.
5. From the Summary page, in the Manage My Accounts section, use the "MiMATS (Motor Fuel or Tobacco) Users link.
6. On the Motor Fuel & Tobacco Login Information page, enter your MiMATS username and password and your email address.
7. Follow the prompts to verify your email address. You will receive a confirmation message indicating your MiLogin profile has been connected to your Motor Fuel Tax and/or Tobacco Tax account(s).
8. On the Summary page, you will now see your connection(s) to Motor Fuel Tax and/or Tobacco Tax account(s).