Ohio Rev. Code Ann. § 5726.06
(A) The reporting person for a taxpayer shall file estimated tax reports and remit the amount of tax estimated to be due for a tax year to the tax commissioner as follows:
(B)
(C)
(2) If the taxpayer did not file a report under section 5726.02 of the Revised Code for the tax year or failed to prepare and file the report in good faith for the tax year, "qualifying net tax" as used in division (C)(1) of this section for that tax year means the amount described in division (C)(2)(a) of this section. Otherwise, "qualifying net tax" as used in division (C)(1) of this section for that tax year means the lesser of the amount described in division (C)(2)(a) or (b) of this section.