Indiana Personal Tax Extension 2026: 2025 Tax-Year Filing Guide
Individual Income Tax · Form IT-40
Indiana generally grants an automatic extension for individual returns. Indiana allows a federal extension automatically; Form IT-9 is required if no federal extension is filed. For federal details, see our federal tax extension resources.
File with confidence. eFile your Federal and Indiana state return through our secure platform with step-by-step guidance and 24/7 support.
✓ Secure e-filing✓ 24/7 filingIndiana generally grants an automatic extension for individual returns. Indiana allows a federal extension automatically; Form IT-9 is required if no federal extension is filed.
Last updated: September 12, 2026Indiana Personal Tax Extension: Filing Details
Indiana generally grants an automatic extension for individual returns. Indiana allows a federal extension automatically; Form IT-9 is required if no federal extension is filed.
Quick Reference: Deadlines and Forms
Use this summary to confirm Indiana filing deadlines, forms, and payment requirements.
| Item | Indiana personal return | Deadline or method |
|---|---|---|
| Original deadline | Form IT-40 | April 15, 2026 |
| Extended deadline | Automatic with Federal | November 16, 2026 |
| Return form | Form IT-40 | Use the current form |
| Payment | Form IT-9 | Due April 15, 2026 |
Frequently Asked Questions
Answers about Indiana personal tax extensions.
The Indiana extended filing deadline for the 2025 tax year is November 16, 2026.
Review the Indiana instructions to determine whether a federal extension or state request is required.
An extension gives more time to file, not more time to pay; pay the required amount by the original deadline.
Check the Indiana revenue or taxation department for current forms and instructions.