Ohio State Tax Extension
Ohio Personal Tax ExtensionForm IT 40P
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File Your Tax Return Now →Ohio Personal Income Tax Extension – Federal Extension Required
Ohio grants an automatic six-month extension for filing personal income tax returns to taxpayers who have obtained a federal extension through IRS Form 4868. The Ohio Department of Taxation aligns with the federal timeline, moving the state filing deadline from April 15, 2026, to October 15, 2026. No separate Ohio extension application is required – but when you file, you must check the extension box on Ohio IT 1040 and include a copy of Form 4868. Any Ohio tax owed remains due April 15.
Check the Box + Include Form 4868 Copy on IT 1040
When filing your Ohio IT 1040 by October 15, check the box indicating you filed federal Form 4868, and attach a copy of your IRS extension. Both steps are required – omitting either can trigger processing complications with your extension status.
Up to 50% or $500 – Among the Steepest in the U.S.
Ohio’s failure-to-file penalty is the greater of 5% of unpaid tax per month (up to 50%) or $50 per month (up to $500). This dual-track penalty structure makes late filing exceptionally costly in Ohio. Do not miss the October 15 deadline.
Using Form IT 40P
Form IT 40P (Ohio Income Tax Payment Coupon) is the payment voucher for mailing an extension payment to Ohio. For online payments, use the free e-check option at tax.ohio.gov/individual/payments/pay-online-page or pay by credit card through acipayonline.com (Ohio jurisdiction code: 6446) or by calling 1-800-272-9829.
Late Filing and Payment Penalties
Ohio’s failure-to-file penalty is the greater of 5% of unpaid tax per month (capped at 50%) or $50 per month (capped at $500) – one of the most aggressive penalty structures in the country. The failure-to-pay penalty is twice the applicable interest rate on unpaid tax. Pay by April 15 and file by October 15 to avoid all penalties.
Best Practices
- ✓File IRS Form 4868 by April 15 – Ohio’s extension depends on a valid federal extension.
- ✓Pay any Ohio balance by April 15, 2026, using the free e-check at tax.ohio.gov.
- ✓Check the extension box on Ohio IT 1040 and include a copy of Form 4868 when filing.
- ✓File your Ohio return by October 15, 2026 – Ohio’s filing penalty is among the steepest anywhere.
Ohio’s penalty exposure for missing the October 15 deadline is unusually severe. Secure your federal extension, pay by April 15, complete both required steps on the IT 1040, and file on time.
Quick Reference Table
| Item | Details |
|---|---|
| State Abbreviation | OH |
| Extension Status | Federal Required |
| Return Due Date | April 15, 2026 |
| Extended Due Date | October 15, 2026 |
| Online Payment | Ohio | Online Tax Extension Payment – Free E-Check |
| Payment Voucher | Form IT 40P | Ohio Income Tax Payment Coupon |
| State Payment Agency | Ohio Department of Taxation |
| Failure to File Penalty | Greater of 5% per month (up to 50%) or $50 per month (up to $500) |
| Failure to Pay Penalty | Twice the applicable interest rate on unpaid tax |
Extended? Your Ohio Return Deadline Is Coming Up.
File your Ohio return securely online – accurate, fast, and backed by 24/7 support. Most filers finish in minutes.
File My Return Securely →Ohio Extension Payment Options
Any Ohio income tax owed is due by April 15, 2026. Use the free e-check option at tax.ohio.gov to avoid processor fees, or pay by credit card through acipayonline.com.
Pay Online – No Fee
Visit tax.ohio.gov/individual/payments/pay-online-page for a free electronic check payment. No fee applies – the most cost-effective option for Ohio filers.
Pay by Card – Fee Applies
Visit acipayonline.com or call 1-800-272-9829 (Ohio jurisdiction code: 6446). Discover, Visa, MasterCard, and American Express accepted. Convenience fee applies.
Mailing Address with Payment
P.O. Box 182131
Columbus, OH 43218-2131
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