2018 Michigan Business Tax (MBT) Forms
Other Forms & Instructions
- Previous Year Forms
- Web-Based Tool for Completing Form 4585
- NOTE: Michigan Business Tax filers will make Quarterly Return payments using the Corporate Income Tax Quarterly Return (Form 4913).
- 4889, 2019 Request for Accelerated Payment for the Brownfield Redevelopment Credit and the Historic Preservation Credit
- 4913, 2019 Corporate Income Tax Quarterly Return and Instructions
- 4913, 2018 Corporate Income Tax Quarterly Return
- 4913, 2018 Corporate income Tax Quarterly Return Instructions

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