Mo. Rev. Stat. § 196.945
An inspection fee shall be annually established by the board not to exceed five cents on each one hundred pounds of grade A raw milk for pasteurization produced under state milk inspection and* shall be paid by the milk plant to the state milk board. Milk dealers, processors, or distributors selling graded fluid milk and fluid milk products in the state as provided for by section 196.949 shall pay a fee, to be established annually by the board, not to exceed five cents on each one hundred pounds of milk or milk products to the state milk board; provided that no milk producer, person, milk dealer, milk processor or milk distributor shall be liable for inspection fees on fluid milk and fluid milk products for which fees have previously been paid to the state milk board. Such fees shall be paid to the state milk board on or before the twentieth day of each month for the preceding calendar month. The annual inspection fees shall be set by the board after holding a public hearing giving thirty days' public notice.
§ 196.945, RSMo