Filing extensions: Ohio does not have an extension request form, but honors the IRS extension. If you filed an IRS extension, your due date for filing your Ohio IT 1040 and SD 100 is October 17, 2022. Include a copy of your IRS extension or IRS acknowledgment, and/or your extension confirmation number. An extension of time to file does not extend the time for payment of the tax due. You must make extension payments by April 18, 2022 on the Ohio IT 40P and/or SD 40P.
**Interest will accrue on any tax not paid by April 18, 2022, and penalties may also apply.**
See R.C. 5747.08(G) and Ohio Adm. Code 5703-7-05.