Ohio Rev. Code § 3119.28: Paying processing charge.

(A) As used in this section, "current support payment" means the amount of support due an obligee that an obligor is required to pay in a particular payment for the current month as specified in a support order. "Current support payment" does not include payments on arrearages under the support order.

(B) The obligor shall pay the amount imposed pursuant to section 3119.27 of the Revised Code with every current support payment, and with every payment on arrearages.