Mo. Rev. Stat. § 88.818
The clerk shall on completion of all special tax bills enter an abstract thereof in a special book provided for that purpose. Said abstract shall recite the date of the tax bill, the name of the property owner and of the person in whose favor it is issued, and a description of the property subject to the lien, and the street upon which it abuts, amount of the tax bill, and the character of the improvement for which it is issued. When any tax bill is assigned, the assignment shall be noted thereon, and the assignee shall exhibit the same to the city clerk, who shall, on the margin of said tax bill, appropriately note the assignment. The party liable to pay the tax bill may either pay the owner of the tax bill, or he may pay the amount of the tax bill to the collector of the municipality, who shall accept the money and make out duplicate receipts therefor, one of which he shall deliver to the person so paying the tax bill and the other he shall file with the clerk of the municipality. And thereupon the clerk shall note the filing of the receipt on the margin of the abstract of the tax bill, and shall mark the latter "cancelled", and shall affix his name to the cancellation, with the date thereof. The cancellation shall have the effect to extinguish all liability or right of action on the tax bill. The collector, on the presentation to him of the tax bill by its owner, shall pay to him the amount thereof, taking duplicate receipts therefor, one of which he shall file with the clerk, who shall note it on the margin of the abstract of the tax bill, and the other the collector shall retain. The collector shall be liable on his bond for said collections, and shall be paid two percent thereof for his services.
§ 88.818, RSMo