Ohio Rev. Code Ann. § 5733.021
(B) A taxpayer required to file a declaration of estimated tax report shall make remittance of such estimated tax to the tax commissioner as follows:
(2) If the estimated tax is in excess of the minimum tax:
(3) If the estimated tax is in excess of the minimum tax, and an extension of time for filing the report required by section 5733.02 of the Revised Code has been granted pursuant to section 5733.13 of the Revised Code:
(C)
(1)
(2)
(3) If the taxpayer did not file a report under section 5733.02 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) of this section for that tax year means the amount described in division (C)(3)(a) of this section. Otherwise, "qualifying net tax" as used in division (C) of this section for that tax year means the lesser of the amount described in division (C)(3)(a) or (b) of this section: