Modernizing Michigan's Motor Fuel and Tobacco Tax Systems

The Michigan Department of Treasury is upgrading the way Motor Fuel and Tobacco taxes are administered. Beginning in the fall, taxpayers will transition from MiMATS to Michigan Treasury eServices, improving reliability, accessibility, and customer experience for businesses, industry partners, and third party filers.

This modernization affects how users register, log in, file returns, make payments, manage licenses, request refunds and communicate with Treasury.

Unified Registration Process

Motor Fuel, Tobacco, Aviation Fuel, and Motor Fuel Statutory Refund accounts will now be registered through a single Business Registration request in the new Michigan Treasury eServices platform. This replaces multiple registration paths previously used in MiMATS.

MiLOGIN Now Required for Access

MiLOGIN is the state of Michigan’s single sign-on and identity management portal. It allows individuals and business users to access online government services across multiple state agencies using a single user ID and password.

All Motor Fuel and Tobacco filers must use MiLOGIN to access Michigan Treasury e Services. This means:

• MiMATS usernames will not carry over.
• Users will create or verify MiLOGIN credentials before accessing their accounts.
• Updated step by step login instructions will be provided.
• Motor Fuel Statutory refunds are individual accounts and routed through the MiLOGIN individual or citizen portal

New Non Filer Billing Process

Treasury is introducing a modernized non filer workflow for Motor Fuel and Tobacco tax types. Taxpayers may receive earlier notices, estimated returns, and new timelines for responding. These notices replace older MiMATS billing behaviors.

New Power of Attorney (POA) Workflow

POA records will no longer be added through MiMATS. User access will be managed by business account administrators Michigan Treasury eServices. This affects accountants, tax professionals, and third-party preparers.

New Voucher-Based Payment Method

Payments will be made through Michigan Treasury eServices voucher payments. Motor Fuel and Tobacco filers will receive updated instructions on how to submit payments using this new process.

Replacing “Respond to a Letter” With “Send a Message”

The MiMATS “Respond to a Letter” function will have a new process within Michigan Treasury eServices. Taxpayers will now communicate with Treasury using the “Send a Message” web request within the Michigan Treasury eServices. This ensures secure, trackable communication.

Accessing Existing MiMATS Accounts in the New System

Current MiMATS credentials can be used to access Michigan Treasury eServices for approximately six months after go-live.

Treasury’s modernization effort enhances security, improves online services, and streamlines compliance for Michigan’s Motor Fuel and Tobacco taxpayers by:

• Improving stability and system performance
• Standardizing filing processes
• Ensuring accurate licensing and registration workflows
• Reducing errors through updated user tools
• Supporting accessible, mobile friendly taxpayer experiences
• Protecting taxpayers by providing a secure and safe online environment to conduct Treasury business.

This upgrade ensures long term reliability while meeting state technology and accessibility standards.

These changes impact:

• Motor Fuel suppliers, carriers, wholesalers, and terminal operators
• Tobacco tax licensees
• Third party accountants, tax professionals, and delegated users
• Industry associations and compliance vendors
• Refund claimants such as agriculture, transit, aviation, and commercial operations

If your business files Motor Fuel or Tobacco Tax returns, maintains licenses, processes POAs, or communicates regularly with Treasury, this transition applies to you.

To prepare for the new Michigan Treasury eServices system, affected users should:

1. Watch for updated registration and filing instructions on Treasury’s Motor Fuel and Tobacco webpages.
2. Inform your staff, accounting teams, or external tax preparers about the coming changes.
3. Be aware of downtime windows during system cutover--exact dates will be communicated in advance.

Treasury will provide clear, timely updates as this transition moves forward. You can expect online resources, technical guidance, informational sessions, and regular communication to ensure a smooth transition to the modernized system.