Wyo. Stat. § 9-4-810: "Time deposit, open account"; rate of interest on public funds.

Quarterly each year, taking into consideration all information before it, the board of deposits shall fix the minimum rate of interest to be paid on time deposit, open account. Time deposits shall be at the minimum rate of interest as fixed by the board or at such higher rate as agreed to by the depository bank or credit union. The minimum rate shall go into effect on the first day of April, July, October and January following as the case may be, and the rate shall not be changed for three (3) months.