Mo. Rev. Stat. § 137.298
Other provisions of law to the contrary notwithstanding, any city may by ordinance include as a charge on bills issued for personal property taxes any outstanding parking violations issued on any vehicle for which personal property tax is to be paid and, if required by ordinance, such charge shall be collected with and in the same payment as personal property taxes are collected by the collector of revenue of such city. No personal property tax bill shall be considered paid unless all charges for parking violations are also paid in full and the collector of revenue shall not issue a paid personal property receipt until all such charges are paid.
(L. 1999 S.B. 19 § 7)