Michigan State Tax Extension
Michigan Personal Tax ExtensionForm 4
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File Your Tax Return Now →Michigan Personal Income Tax Extension – Federal Extension Required
Michigan grants a six-month extension for filing personal income tax returns to taxpayers who have obtained a federal extension through IRS Form 4868. The Michigan Department of Treasury mirrors the federal timeline, extending the state filing deadline from April 15, 2026, to October 15, 2026. No separate Michigan extension application is needed. Any Michigan income tax owed remains due April 15.
Copy of Federal Extension Required with Your Return
Attach a copy of IRS Form 4868 to your Michigan return when you file by October 15. Omitting it can trigger processing issues with your extension even when a valid federal extension is on record.
Pay Any Balance by April 15, 2026
Michigan’s extension covers filing only – not payment. Any Michigan income tax owed must be paid by April 15 to avoid penalties and interest.
Using Form 4
Form 4 (Application for Extension of Time to File Michigan Tax Returns) is used when mailing an extension payment to Michigan. If paying online through Michigan Treasury eServices, no paper form is required.
Late Filing and Payment Penalties
Michigan’s failure-to-file penalty is 5% of tax for the first two months, then 5% per month or partial month thereafter, capped at 25%. The failure-to-pay penalty is 5% of unpaid tax, plus an additional 5% per month if unpaid after two months, also capped at 25%. Both penalties can apply simultaneously – paying by April 15 and filing by October 15 eliminates all exposure.
Best Practices
- ✓File IRS Form 4868 by April 15 – Michigan’s extension depends on federal approval.
- ✓Pay any Michigan balance by April 15, 2026, at michigan.gov/taxes or by mail with Form 4.
- ✓Attach a copy of Form 4868 when filing your Michigan return by October 15.
- ✓Save your payment confirmation as proof of timely payment.
Michigan’s process is direct: secure your federal extension, pay any balance by April 15, and file your Michigan return with a copy of Form 4868 attached by October 15, 2026.
Quick Reference Table
| Item | Details |
|---|---|
| State Abbreviation | MI |
| Extension Status | Federal Required |
| Return Due Date | April 15, 2026 |
| Extended Due Date | October 15, 2026 |
| Online Payment | Michigan | Online Tax Extension Payment |
| Payment Voucher | Form 4 | Application for Extension of Time to File Michigan Tax Returns |
| State Payment Agency | Michigan Department of Treasury |
| Failure to File Penalty | 5% for first 2 months, plus 5% per month thereafter, up to 25% |
| Failure to Pay Penalty | 5% of unpaid tax, plus 5% per month after 2 months, up to 25% |
Extended? Your Michigan Return Deadline Is Coming Up.
File your Michigan return securely online – accurate, fast, and backed by 24/7 support. Most filers finish in minutes.
File My Return Securely →Michigan Extension Payment Options
Any Michigan income tax owed is due by April 15, 2026. Pay through Michigan’s Michigan Treasury eServices online. EFT through checking or savings is free; debit card: $3.95 flat fee; credit card: 2.3% convenience fee.
Pay Online – Fee Applies
Go to michigan.gov/taxes and use Michigan Treasury eServices. EFT through checking or savings is free of charge.
Pay by Card – Fee Applies
Also available at michigan.gov/taxes via Michigan Treasury eServices. Debit card: $3.95 flat fee; credit card: 2.3% convenience fee.
Mailing Address with Payment
P.O. Box 30774
Lansing, MI 48909
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