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Michigan Treasury Online
MTO is the Michigan Department of Treasury's web portal to many business taxes. Treasury is committed to protecting sensitive taxpayer information while providing accessible and exceptional web services.
Michigan Treasury Online
Michigan Treasury Online (MTO) is a Treasury web service offering people the ability to interact with Treasury on behalf of businesses registered for taxes in Michigan.
Michigan Treasury Online Updates – December 2025
You no longer need to be connected to a registered business tax account through the sales, use, and withholding (SUW) Tax Service to file most W-2s and 1099s with Treasury electronically.
Sales and Use Taxes - State of Michigan
Individuals or businesses that sell tangible personal property to the final consumer are required to remit a 6% sales tax on the total price of their taxable retail sales to the State of Michigan.
Business Taxes - Michigan
You can login to upload documentation and review responses to prior questions, or ask Treasury account-specific or general questions, or view responses to your questions.
Accessing MTO - State of Michigan
Use a browser supported by MTO to access the online application: Select the About menu option. The type and version of your browser should be listed here. If you are trying to access MTO from a non-US IP address, you will likely run into Error 522 and be unable to interact with the web service.
Business Taxes - etreas.michigan.gov
By accessing and using this computer system, you are consenting to system monitoring for law enforcement and other purposes. Unauthorized use of, or access to, this computer system may subject you to state and federal criminal prosecution and penalties as well as civil penalties.
MiTreasury eServices - Business Portal
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