Mo. Rev. Stat. § 488.5017

A surcharge of one dollar *, as provided for in section 56.765, shall be assessed as costs in each court proceeding filed in any court in the state in all criminal cases including violations of any county ordinance or any violation of a criminal or traffic law of the state, including an infraction; except that no such surcharge shall be collected in any proceeding in any court when the proceeding or the defendant has been dismissed by the court or when costs are to be paid by the state, county or municipality.