Idaho Code § 57-133
A public depository may pay interest to the depositing unit upon demand deposits, deposit accounts upon which negotiable orders of withdrawal may be written, and similar transaction deposit accounts made with it by such depositing unit as allowed by state or federal law.
The supervising boards of all depositing units are authorized in their discretion and from time to time to adopt, amend, and/or repeal rules and regulations not inconsistent with other provisions of this act providing for the payment by such depositing unit to its designated depository or depositories of reasonable charges for their services rendered in acting as such depositories. The rate of such charges and the terms and conditions thereof shall be fixed by such supervising boards in such rules and regulations, and shall be uniformly applicable to all designated depositories for such depositing unit under like circumstances and conditions. Such charges shall be allowed and paid from the funds of such depositing unit available for the payment of its general expenses as other claims against said funds are allowed and paid.
Every public depository shall pay interest upon time deposits made by the public depositing unit at rates not less than those paid to investors for deposits of the same amount and under like circumstances and conditions; provided, however, that such time deposits shall bear interest at a rate not in excess of the maximum rate permitted by any applicable governmental regulation.
Idaho Code § 57-133