Ohio Revised Code Title VII. Municipal Corporations § 718.121

(A) Except as provided in division (B) of this section, if tax or withholding is paid to a municipal corporation on income or wages, and if a second municipal corporation imposes or assesses a tax on that income or wages after the time period allowed for a refund of the tax or withholding paid to the first municipal corporation, the second municipal corporation shall allow a nonrefundable credit, against the tax or withholding the second municipality claims is due with respect to such income or wages, equal to the tax or withholding paid to the first municipal corporation with respect to such income or wages.

(B) If the tax rate in the second municipal corporation is less than the tax rate in the first municipal corporation, then the credit described in division (A) of this section shall be calculated using the tax rate in effect in the second municipal corporation.

(C) If the tax rate in the second municipal corporation is greater than the tax rate in the first municipal corporation, the tax due in excess of the credit afforded is to be paid to the second municipal corporation, along with any penalty and interest accruing thereto during the period of nonpayment.

(D) Nothing in this section permits any credit carryforward.