Mo. Rev. Stat. § 50.327: Base salary schedules for county officials — salary commission responsible for computation of county official salaries, except for charter counties — salary adjustments and increases, when.

1. Notwithstanding any other provisions of law to the contrary, the salary schedules contained in sections 49.082, 50.334, 50.343, 51.281, 51.282, 52.269, 53.082, 53.083, 54.261, 54.320, 55.091, 56.265, 58.095, and 473.742 shall be set as a base schedule for those county officials. Except when it is necessary to increase newly elected or reelected county officials' salaries, in accordance with Section 13, Article VII, Constitution of Missouri, to comply with the requirements of this section, the salary commission in all counties except charter counties in this state shall be responsible for the computation of salaries of all county officials; provided, however, that any percentage salary adjustments in a county shall be equal for all such officials in that county and any salary adjustment after August 28, 2026, shall not decrease the current salary of any official. To the extent that the current salary of any official exceeds the amount set forth in the salary schedules contained in sections 49.082, 50.334, 50.343, 51.281, 52.269, 53.082, 53.083, 54.261, 54.320, 55.091, 56.265, 58.095, and 473.742 as of August 28, 2026, such salary may only be increased as a result of further increases to assessed value as provided in such sections or in section 50.333.

2. In addition to the amounts set forth in the salary schedules contained in sections 49.082, 50.334, 50.343, 51.281, 52.282, 52.269, 53.082, 53.083, 54.261, 54.320, 55.091, 56.265, 58.095, and 473.742, salaries shall be adjusted each year on the anniversary date of each official's current term. The amount of adjustment shall be based on the following calculation:

(1) Determine the difference between the last completed assessed value for the county minus the assessed value for the county for the year prior to the last completed assessed value;

(2) Divide the difference by the amount of the last completed assessed value to determine the annual assessed value growth;

(3) Multiply the annual assessed value growth by the following amount:

Annual Assessed Value Growth Amount

Negative No Change

0 - 2.99% 1

3.00 - 5.99% 0.5

6.00 - 6.99% 0.33

7.00 - 7.99% 0.25

8.00 - 9.99% 0.20

10% plus .013

(4) Multiply the product of the calculation set forth in subdivision (3) of this subsection by the official's current salary; and

(5) Add the product of the calculation set forth in subdivision (4) of this subsection to the current salary amount. Adjustments made pursuant to this subsection shall not equal or exceed the salary for the next highest assessed valuation contained in sections 49.082, 50.334, 50.343, 51.281, 52.282, 52.269, 53.082, 53.083, 54.261, 54.320, 55.091, 56.265, 58.095, and 473.742.

3. Upon majority approval of the salary commission, the annual compensation of part-time prosecutors contained in section 56.265 and the county offices contained in sections 49.082, 50.334, 50.343, 51.281, 51.282, 52.269, 53.082, 53.083, 54.261, 54.320, 55.091, 58.095, and 473.742 may be increased greater than the compensation provided by the salary schedules; provided, however, that any vote to increase compensation be effective for all county offices in that county subject to the salary commission.

4. Upon the majority approval of the salary commission, the annual compensation of a county coroner of any county not having a charter form of government as provided in section 58.095 may be increased up to fourteen thousand dollars greater than the compensation provided by the salary schedule of such section.

5. The salary commission of any county of the third classification may amend the base schedules for the computation of salaries for county officials referenced in subsection 1 of this section to include assessed valuation factors in excess of three hundred million dollars; provided that the percentage of any adjustments in assessed valuation factors shall be equal for all such officials in that county.