Michigan Business Tax
- Due to the COVID-19 pandemic and Gov. Gretchen Whitmer’s “Stay Home, Stay Safe” Executive Order, only online tax services are available at this time. Please submit your questions online by selecting “Check My Account Information” and choosing “Account Information”. Please allow 72 hours to receive a response. We appreciate your patience and understanding during this time.
MBT E-file Mandate for Tax Year 2010
Beginning with the 2010 tax year, Michigan will have an enforced Michigan Business Tax (MBT) e-file mandate.
Developers producing MBT tax preparation software and computer-generated forms must support e-file for all eligible Michigan forms that are included in their software package. All eligible MBT returns prepared using tax preparation software or computer-generated forms must be e-filed.
Treasury will not process computer-generated paper returns that are eligible to be e-filed. A notice will be mailed to the taxpayer indicating that their return was not filed in the proper form and content and must be e-filed. Payment received with a paper return will be processed and credited to the taxpayer's account even when the return is not processed.
Additional information will be published on Treasury's Web site as it becomes available. E-file information is available at www.MIfastfile.org.
The Michigan Business Tax (MBT), which was signed into law by Governor Jennifer M. Granholm July 12, 2007, imposes a 4.95% business income tax and a modified gross receipts tax at the rate of 0.8%. Insurance companies and financial institutions pay alternate taxes (see below). The MBT replaces the Single Business Tax, effective January 1, 2008.
On December 4, 2007, Governor Jennifer M. Granholm signed Public Act 145 of 2007 amending the MBT. Although the primary purpose of PA 145 was to institute an MBT surcharge, PA 145 also makes some additional changes, which are detailed in the link below.
To view additional detail on components of the Michigan Business Tax, choose from the categories to the right.
- The Tax
- Additional Details and Components
- New, Retained, and Expanded Credits
- Personal Property Tax Credits
- Frequently Asked Questions
- Filing Due Dates
- MBT FAQs Referencing Common Adjustments Made to MBT Returns
- Certificated Credits
Only taxpayers with Certificated Credits can elect to file MBT.
- Notice Regarding Materials and Supplies
- Notice To Taxpayers Regarding Overpayments Remaining On Michigan Business Tax Accounts
- Notice to Taxpayers: Financial Institution Unitary Filing and Reporting of Eliminations for the MBT and CIT
- Notice to Taxpayers Regarding Federally Disregarded Entities and the Michigan Business Tax
- Notice To Taxpayers Regarding Film Production Credit Qualified Vendors
- Web-Based Tool for Completing Form 4585
- 2014 Michigan Community Foundation MBT Credit Certification Application
- 2014 Michigan Education Foundation MBT Credit Certification Application
- MBT E-file Mandate for Tax Year 2010 MBT Forms and Instructions will not be mailed this year
- Michigan Business Tax (MBT) Details