Mo. Rev. Stat. § 52.275

The county and township collectors for collecting taxes for drainage and levee districts shall collect on behalf of the county and pay into the county general fund the following amounts: in counties of the first class, except first class counties with a charter form of government, one percent on current taxes; in counties of the second class having less than one hundred thousand inhabitants and in counties of the third class, one and one-half percent of the amount he collects on current taxes; in counties of the third class where the collector is required by law to maintain a branch office, two and one-fourth percent of the amount he collects on current taxes; in counties of the fourth class, two percent of the amount he collects on current taxes; and in counties of the second class having less than one hundred thousand inhabitants and in all counties of the third and fourth classes, two percent of the amount he collects on delinquent drainage and levee taxes.