Ohio Rev. Code § 5726.53
A taxpayer may claim a refundable credit against the tax imposed by this chapter for each person included in the annual report of the taxpayer that was issued a tax credit certificate by the Ohio venture capital authority under section 150.07 of the Revised Code. The amount of the credit shall equal the amount specified in the tax credit certificate. The credit shall be claimed for the tax year specified in the tax credit certificate. The taxpayer shall claim the credit in the order required under section 5726.98 of the Revised Code. If the credit amount exceeds the tax otherwise due under section 5726.02 of the Revised Code after deducting all other credits preceding the credit in the order prescribed in section 5726.98 of the Revised Code, the excess shall be refunded to the taxpayer.
R.C. § 5726.53