Mo. Rev. Stat. § 488.605: Circuit clerk, duties — (child support).

The circuit clerk shall charge an amount determined pursuant to sections 488.010 to 488.020* as fees for maintaining records required pursuant to section 452.340, which fee shall be deducted from the first maintenance or support payment made each calendar year, except that no fee shall be charged for maintaining records for any IV-D case. This fee shall be paid to the county or city general revenue fund.