82-11-131. Privilege and license tax. (1) For the purpose of providing funds for defraying the expenses of the operation and enforcement of this chapter and expenses of the board, an operator or producer of oil and gas shall pay an assessment of 0.3% of the market value of each barrel of crude petroleum produced, saved and marketed, or stored within the state or exported from the state and the same rate on the market value of each 10,000 cubic feet of natural gas produced, saved and marketed, or stored within the state or exported from the state.

(2) The board shall, by rule adopted pursuant to the provisions of the Montana Administrative Procedure Act, fix a percentage of the assessment and may from time to time reduce or increase the percentage of the assessment as the expenses chargeable against the oil and gas conservation fund may require.

(3) The board shall give the department of revenue at least 90 days' notice of any change in the percentage of the rate adopted pursuant to this section.

(4) For the purposes of this section, the provisions of Title 15, chapter 36, part 3, apply to the privilege and license tax assessment.