Wyo. Stat. § 13-7-301: Savings and investment accounts.

State savings and loan associations may accept savings and issue savings account books or investment certificates as evidence of savings and shall credit interest or pay interest in cash periodically at least annually, if earned. Savings and investment accounts are ownership accounts in the association and not creditor liabilities and shall bear interest at a rate prescribed by the directors of the association for the period. If a rate is not specified prior to any period then accounts shall receive the rate prevailing the previous period. Interest shall be payable only if available from current earnings or undivided profits.