S Corporation Tax Deadlines in Michigan
Federal and state filing dates, extensions, and estimate schedules for 2026.
Michigan filing deadline
Calendar-year due date follows federal timing for pass-through entities.
Due: Mar 16, 2026
Extension: Sep 15, 2026
Form: State S-corporation return
Estimated payments
No state estimated payment schedule listed.
Due: N/A
FAQ
Does Michigan require S Corporation estimated payments?
Estimated payments are not typically required at the entity level, but confirm with Michigan Department of Treasury.
Where can I file Michigan S Corporation taxes?
Use Michigan Department of Treasury resources at https://www.michigan.gov/taxes for forms and filing instructions.