Ohio Rev. Code § 5736.081
As used in this section, "debt to this state" means unpaid taxes due the state, unpaid workers' compensation premiums due under section 4123.35 of the Revised Code, unpaid unemployment compensation contributions due under section 4141.25 of the Revised Code, unpaid unemployment compensation payment in lieu of contribution under section 4141.241 of the Revised Code, unpaid fees payable to the state or to the clerk of courts pursuant to section 4505.06 of the Revised Code, incorrect payments for medicaid services under the medicaid program, or any unpaid charge, penalty, or interest arising from any of the foregoing.
If a taxpayer entitled to a refund under section 5736.08 of the Revised Code owes any debt to this state, the amount refundable may be applied in satisfaction of the debt. If the amount refundable is less than the amount of the debt, it may be applied in partial satisfaction of the debt. If the amount refundable is greater than the amount of the debt, the amount remaining after satisfaction of the debt shall be refunded. This section applies only to debts that have become final. For the purposes of this section, a debt becomes final when, under the applicable law, any time provided for petition for reassessment, request for reconsideration, or other appeal of the legality or validity of the amount giving rise to the debt expires without an appeal having been filed in the manner provided by law.
R.C. § 5736.081