Ohio Rev. Code § 4501.031
All moneys received under section 4504.09 of the Revised Code shall be paid into the state treasury to the credit of the local motor vehicle license tax fund, which is hereby created, for distribution in the manner provided for in this chapter. The treasurer of state may invest any portion of the moneys credited to the fund in the same manner and subject to all the laws governing the investment of state funds by the treasurer of state. All investment earnings of the fund shall be credited to the fund.
The registrar of motor vehicles shall open an account with each county and district of registration in the state, and may assign each county and district a code for identification purposes. The code for a county or district may be the same as the code assigned to the county or district by the registrar under section 4501.03 of the Revised Code.
Once each month the registrar shall prepare vouchers in favor of the county auditor of each county levying a county motor vehicle license tax pursuant to section 4504.02, 4504.15, 4504.16, or 4504.24 of the Revised Code and of each county in which is located one or more townships levying a township motor vehicle license tax pursuant to section 4504.18 or 4504.181 of the Revised Code for the amount of the tax due the county or townships in the county.
All moneys received by the registrar under section 4504.09 of the Revised Code shall be distributed to counties, townships, and municipal corporations within thirty days of the expiration of the registration year. Necessary adjustments shall be made immediately out of funds available for distribution for the following two registration years.
R.C. § 4501.031