Mo. Rev. Stat. § 67.380: Charges limited to cost of service.

State agencies may require political subdivisions to pay a service charge limited to the cost of such service as is rendered by the state agency and as shall be set forth in the contractual agreement. Charges for services paid by political subdivisions toward the cost of state technical services shall be deposited in the fund from which the state agency receives the appropriation for which this political subdivision is reimbursing the state.