Mont. Code Ann. § 19-13-604

The state shall make its contributions from the general fund. The general fund contributions must be made annually after the end of each fiscal year but no later than November 1. The board shall notify the state auditor by September 1 of each fiscal year of the annual compensation, excluding overtime, holiday payments, shift differential payments, compensatory time payments, and payments in lieu of sick leave, paid to all active members during the preceding fiscal year. The state's contribution is 32.61% of this total compensation. The contributions are statutorily appropriated, as provided in 17-7-502.