When Do My Indiana State Taxes Need to Be Filed?
Indiana residents are required to file their individual state income tax returns by a specific deadline each year. For the 2025 tax year, the filing deadline is April 15, 2026. This aligns with the federal tax filing deadline, as Indiana does not offer an extension beyond the federal deadline unless you have filed for an extension with the IRS.
Key Deadlines and Extensions
- Regular Filing Deadline: April 15, 2026 (for tax year 2025)
- Estimated Tax Payments: If you are required to make estimated tax payments, the fourth installment is due by January 15, 2026. However, if you file your return and pay the tax due by February 2, 2026, you are not required to make the fourth installment payment.
- Extensions: If you need more time to file, you must request an extension from the IRS. Indiana does not grant extensions independently. The extension request must be made using IRS Form 4868. If granted, your Indiana return will be due on October 15, 2026.
Forms Used for Filing
Depending on your residency status and income sources, you may need to file one of the following Indiana state tax forms:
- Form IT-40 – For full-year residents
- Form IT-40RNR – For part-year residents
- Form IT-40PNR – For nonresidents or part-year nonresidents with Indiana-source income
Important Notes for Filers
- Nonresidents must report only income derived from Indiana sources. Certain types of income (e.g., interest, dividends, unemployment compensation) are not taxed by Indiana if received while a nonresident.
- If you are a part-year resident, you must prorate your income based on the time spent in Indiana.
- Always complete your federal return (Form 1040) first before completing Indiana Schedule A or other state-specific forms.
Source:
Indiana State Instruction
Form IT-40PNR
Form IT-40RNR
Form IT-40
Disclaimer: Always verify details with the official Federal or State Department of Revenue Forms and Instructions before filing.