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Michigan Department of Treasury - Taxes

July 22-28: Treasury eServices Outages

Due to system upgrade and maintenance, most Treasury eServices (City Taxes, Business Taxes, Individual Income Taxes, and Tax Professionals) will be completely unavailable between Monday, July 22 and Sunday, July 28.


During this outage, Michigan Treasury Online (MTO) will remain fully available for business tax needs and the Collections eService will be limited to viewing collection account information only. Treasury is here to support you; contact us with questions or if you need account information.