Ohio Rev. Code § 3519.04
Within two days after receipt, under division (A) of section 3519.01 of the Revised Code, of the verified copy of a proposed state law or constitutional amendment proposing the levy of any tax or involving a matter that will necessitate the expenditure of any funds of the state or any political subdivision of the state, the secretary of state shall request of the office of budget and management an estimate of any annual expenditure of public funds proposed and of the tax commissioner the annual yield of any proposed taxes. The office of budget and management, on receipt of a request for an estimate of the annual expenditure of public funds proposed, shall prepare the estimate and file it in the office of the secretary of state. The tax commissioner, on receipt of a request for an estimate of the annual yield of any proposed taxes, shall prepare the estimate and file it in the office of the secretary of state. The office of budget and management and the tax commissioner may issue a joint estimate if the proposed state law or constitutional amendment necessitates both the expenditure of public funds and a levy of any tax.
Upon receipt of an estimate of the annual expenditure of public funds proposed from the office of budget and management, an estimate of the annual yield of any proposed taxes from the tax commissioner, or a joint estimate of the annual expenditure of public funds proposed and the annual yield of any proposed taxes from the office of budget and management and the tax commissioner, the secretary of state shall post the estimate on a web site of the office of secretary of state for thirty days before the election at which the proposed state law or constitutional amendment will be voted upon.
R.C. §3519.04