Ohio Revised Code Title VII. Municipal Corporations § 718.851

(A) All taxpayers that have made the election allowed under section 718.80 of the Revised Code shall file any tax return or extension for filing a tax return, and shall make payment of amounts shown to be due on such returns, electronically, either through the Ohio business gateway or in another manner as prescribed by the tax commissioner.

(B) A taxpayer may apply to the commissioner, on a form prescribed by the commissioner, to be excused from the requirement to file returns and make payments electronically. For good cause shown, the commissioner may excuse the applicant from the requirement and permit the applicant to file the returns or make the payments by nonelectronic means.

(C) The tax commissioner may adopt rules establishing the following: