Indiana State Tax Extension
Indiana Personal Tax ExtensionForm IT-9
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File Your Tax Return Now →Indiana Personal Income Tax Extension – No Federal Extension Required – Up to 7 Months
Indiana is one of the most generous states for extension filers. Taxpayers who secure a federal extension through IRS Form 4868 automatically receive the standard six-month extension – plus an additional 30 days, giving Indiana taxpayers until November 16, 2026 to file. No separate Indiana extension form is required when you have a federal extension. Alternatively, Indiana taxpayers without a federal extension can request the extension directly via INTIME (intime.dor.in.gov) or by filing Form IT-9 by April 15. Payment, however, remains due by April 15.
File by November 16, 2026
Indiana adds 30 days beyond the standard federal extension period – one of the longest filing windows in the country. Federal extension required to activate it.
Pay Any Balance by April 15, 2026
The extended filing deadline does not move the payment due date. Pay at least 90% of your Indiana income tax by April 15 to avoid the late-payment penalty. Interest accrues on any unpaid balance after April 15; the remaining balance (plus interest) must be paid by November 16.
Using Form IT-9
Form IT-9 (Application for Extension of Time to File) is used to request an extension of time to file and/or mail an extension payment to Indiana. If paying online through INTIME, no paper form is needed. INTIME supports both ACH/e-check (no fee) and credit/debit card payments.
Late Filing and Payment Penalties
Indiana imposes a 10% penalty on unpaid tax for both failure to file and failure to pay. Because both penalties share the same rate and can apply simultaneously, missing both obligations could result in penalties of up to 20% of unpaid tax. Filing by November 16 and paying by April 15 eliminates all exposure.
Best Practices
- ✓Activate Indiana’s November 16 deadline by April 15 – either via a federal Form 4868, or directly through INTIME or Form IT-9.
- ✓Pay any Indiana balance by April 15, 2026, using INTIME (intime.dor.in.gov) or Form IT-9 by mail.
- ✓Use INTIME for ACH/e-check payments – no fees and instant confirmation.
- ✓File your completed Indiana return by November 16, 2026.
Indiana’s extra 30 days beyond the federal window makes it one of the most taxpayer-friendly states for extension filers. Activate your extension by April 15 (federal Form 4868, INTIME, or Form IT-9), pay at least 90% of your liability, and take advantage of the full November 16 filing window.
Quick Reference Table
| Item | Details |
|---|---|
| State Abbreviation | IN |
| Extension Status | Automatic |
| Return Due Date | April 15, 2026 |
| Extended Due Date | November 16, 2026 |
| Online Payment | Indiana | Online Tax Extension Payment |
| Payment Voucher | Form IT-9 | Application for Extension of Time to File |
| State Payment Agency | Indiana Department of Revenue |
| Failure to File Penalty | 10% of unpaid tax |
| Failure to Pay Penalty | 10% of unpaid tax |
Extended? Your Indiana Return Deadline Is Coming Up.
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File My Return Securely →Indiana Extension Payment Options
Pay at least 90% of your Indiana income tax by April 15, 2026 to avoid the late-payment penalty. Any remaining balance (plus accrued interest) is due by November 16, 2026. INTIME (Indiana Taxpayer Information Management Engine) offers two online payment methods.
Pay Online – No Fee
Pay by electronic bank debit at intime.dor.in.gov. No fees assessed. Confirmation is immediate.
Pay by Card
Visa, MasterCard, and Discover are accepted through INTIME. A convenience fee applies. Save your confirmation number as proof of payment.
Mailing Address with Payment
P.O. Box 6117
Indianapolis, IN 46206-6117
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