IDAHO INTERSTATE BANKING ACT – Amends existing law to provide for state or federal credit unions to be designated as state depositories.

Idaho's S 1103 allows state or federal credit unions to hold state funds by designating them as official state depositories, expanding options beyond traditional banks. Credit unions must annually submit an affidavit confirming they won’t boycott businesses in fossil fuels, firearms, or agriculture sectors, and provide collateral for funds exceeding insurance coverage. The law requires the state treasurer to verify compliance annually and revoke depository status for violations, with a 60-day notice period for credit unions to respond. It takes effect July 1, 2025, and applies directly to credit unions seeking to manage Idaho’s public funds.