Indiana business tax extension
Indiana honors the federal extension for Form IT-20, and has its own extension form for a business without one. The federal extension is Form 7004, due for calendar-year corporations and for partnerships and S corporations. In general, an extension gives you more time to file, not more time to pay.
Last updated · From Indiana's own forms, instructions and laws, cited below
Does Indiana accept the federal extension?
A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request.
Indiana's rules for each business return, as its own instructions and laws state them:
Corporations
- Return
- Form IT-20, Indiana Corporate Adjusted Gross Income Tax Return
- Due date
- The 15th day of the 5th month after the tax year ends (May 15 for a calendar year)
- Extension
- A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request. With a federal Form 7004, enclose a copy with the return and check box M; no separate Indiana request is needed. Without one, request an Indiana extension through INTIME or by letter before the original due date.
- Extended due date
- One month after the federal extended due date of Form 1120
- Payment
- The tax is due by the original due date, even with an extension. To pay with the extension: INTIME (intime.dor.in.gov).
S corporations
- Return
- Form IT-20S, Indiana S Corporation Income Tax Return
- Due date
- The 15th day of the 4th month after the tax year ends (April 15 for a calendar year)
- Extension
- A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request. With a federal Form 7004, enclose a copy with the return and check box R; no separate Indiana request is needed. Without one, request an Indiana extension through INTIME or by letter before the original due date.
- Extended due date
- One month after the federal extended due date of Form 1120-S
- Payment
- The tax is due by the original due date, even with an extension. To pay with the extension: INTIME, or Form IT-6WTH for composite withholding and pass-through entity tax.
Partnerships
- Return
- Form IT-65, Indiana Partnership Return
- Due date
- The 15th day of the 4th month after the tax year ends (April 15 for a calendar year)
- Extension
- A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request. With a federal Form 7004, enclose a copy with the return and check box G; no separate Indiana request is needed. Without one, request an Indiana extension through INTIME or by letter before the original due date.
- Extended due date
- One month after the federal extended due date of Form 1065
- Payment
- The tax is due by the original due date, even with an extension. To pay with the extension: INTIME, or Form IT-6WTH for composite withholding and pass-through entity tax.
Estates and trusts
- Return
- Form IT-41, Indiana Fiduciary Income Tax Return
- Due date
- The 15th day of the 4th month after the tax year ends (April 15 for a calendar year)
- Extension
- A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request. Attach a copy of the federal extension to Form IT-41. Without one, request an Indiana extension through INTIME or by letter to the DOR Fiduciary Section.
- Extended due date
- One month after the federal extended due date of Form 1041
- Payment
- The tax is due by the original due date, even with an extension. To pay with the extension: Form IT-41ES, Fiduciary Payment Voucher, or INTIME.
When is the federal business extension due?
Corporations, S corporations, partnerships, multi-member LLCs, estates and trusts extend their federal return with Form 7004, filed by the return's original due date. The extension is automatic: no reason is needed and the IRS doesn't approve it. We e-file it for a flat $9.95. These are the 2027 dates for calendar-year 2026 returns:
| Return | Who files | File the extension by | Extended to |
|---|---|---|---|
| Form 1065 Partnerships & multi-member LLCs, Form 7004 | 6 months | ||
| Form 1120-S S corporations (and LLCs taxed as S corps), Form 7004 | 6 months | ||
| Form 1120 C corporations (and LLCs taxed as C corps), Form 7004 | 6 months | ||
| Form 1041 Estates & trusts, Form 7004 | 5½ months | ||
| Form 990, 990-EZ, 990-PF Tax-exempt organizations & private foundations, Form 8868 | May 15, 2027 is a Saturday | 6 months |
Federal dates follow the IRS rule: a deadline on a weekend or legal holiday moves to the next business day. A fiscal-year business counts from its own year-end; see the fiscal-year deadline guide.
Tax-exempt organizations extend the 990 series with Form 8868, not Form 7004. Each return needs its own extension, so extending a business return does not extend its owners' personal returns.
Does an extension give more time to pay?
No. A federal extension moves the filing deadline only: tax owed is due by the original due date, and the IRS charges interest and the late-payment penalty on anything paid after it. Indiana's instructions say the same for its returns: a Indiana extension doesn't move the payment deadline. More in does an extension give you more time to pay?
Where are Indiana's forms and instructions?
On the Indiana Department of Revenue website, which has the current forms, instructions and online services. The rules on this page are summarized from the sources below. We e-file the federal extension; the Indiana return and any Indiana extension request go to the state.
Indiana extension FAQ
Does Indiana accept the federal business tax extension?
A federal extension (Form 7004) also extends the Indiana return. Without a federal extension, Indiana has its own extension request. With a federal Form 7004, enclose a copy with the return and check box M; no separate Indiana request is needed. Without one, request an Indiana extension through INTIME or by letter before the original due date.
When is the Indiana Form IT-20 due?
The 15th day of the 5th month after the tax year ends (May 15 for a calendar year).
Does a Indiana extension give more time to pay?
No. The tax is due by the original due date, even with an extension. To pay with the extension: INTIME (intime.dor.in.gov).
Does a Indiana business still need a federal extension?
Yes, to get more time for its federal return: Form 7004, filed by April 15, 2027 for a calendar-year corporation or March 15, 2027 for a partnership or S corporation. Indiana honors that federal extension for the state return too.
Sources
- Indiana 2025 IT-20 Corporate Income Tax Booklet, read
- Indiana 2025 IT-20S S Corporation Income Tax Booklet, read
- Indiana 2025 IT-65 Partnership Return Booklet, read
- Indiana 2025 IT-41 Fiduciary Income Tax Booklet, read
- Income Tax Information Bulletin #15: Extension of Time to File Indiana Corporation Income Tax Returns and Recognition of the Federal Extension of Time to File Indiana Corporation Income Tax Returns (December 2022) (PDF), read
- DOR: Fiduciary Income Tax FAQs, read
- Current Year Corporate/Partnership Tax Forms - DOR, read
Filing a federal business extension this season?
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