Mississippi Personal Tax Extension 2026: 2025 Tax-Year Filing Guide
Individual Income Tax · Form 80-105
Mississippi generally grants an automatic extension for individual returns. Mississippi accepts a federal extension for individual returns. The 2025 return is due April 15, 2026, and the extended deadline is October 15, 2026. For federal details, see our federal tax extension resources.
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✓ Secure e-filing✓ 24/7 filingMississippi generally grants an automatic extension for individual returns. Mississippi accepts a federal extension for individual returns. The 2025 return is due April 15, 2026, and the extended deadline is October 15, 2026.
Last updated: September 12, 2026Mississippi Personal Tax Extension: Filing Details
Mississippi generally grants an automatic extension for individual returns. Mississippi accepts a federal extension for individual returns. The 2025 return is due April 15, 2026, and the extended deadline is October 15, 2026.
Quick Reference: Deadlines and Forms
Use this summary to confirm Mississippi filing deadlines, forms, and payment requirements.
| Item | Mississippi personal return | Deadline or method |
|---|---|---|
| Original deadline | Form 80-105 | April 15, 2026 |
| Extended deadline | Automatic with Federal | October 15, 2026 |
| Return form | Form 80-105 | Use the current form |
| Payment | Form 80-106 | Due April 15, 2026 |
Frequently Asked Questions
Answers about Mississippi personal tax extensions.
Yes. Mississippi generally accepts an approved federal extension for the individual return.
File Form 80-106 by April 15 if Mississippi tax is due or you need a Mississippi extension without a federal extension.
Pay Mississippi tax by April 15; an extension gives more time to file, not to pay.
Check the Mississippi Department of Revenue for current forms and instructions.