The Michigan Department of Treasury has been made aware that some "Reminder of Tax Due" letters sent to taxpayers contain an incorrect toll-free (1-800) TTY number, which may connect callers to a potential scam. Taxpayers with questions regarding unpaid individual income taxes are asked to contact the Treasury directly at 517-636-4486. We apologize for any confusion or concern this may have caused.
2025 Corporate Income Tax Forms
| Form Number | Form Name | Description |
|---|---|---|
| 5300 | 2025 City of Detroit Corporate Income Tax Quarterly Estimated Return | Complete this form if your corporation has an annual corporate income tax liability of more than $250. |
| Two-digit Country Codes for Tax Returns |