Mo. Rev. Stat. § 150.230

Every person, corporation or copartnership of persons, to whom a license shall have been granted to vend goods, wares and merchandise, who has filed a correct statement as herein required, and failed to pay the amount of revenue so owing to the collector of the proper county, shall be deemed to have forfeited the license issued to him or them in virtue hereof, and judgment shall be rendered for the plaintiff in damages, for double the amount of such revenue and costs.