FINANACIAL ACCOUNTABILITY STABLECOIN TRANSACTION ACT – Adds to existing law to establish the Financial Accountability Stablecoin Transaction (FAST) Act to provide for the authorization and use of payment stablecoins.

Idaho's H 586 (FAST Act) authorizes the state to use specific digital payment stablecoins for government transactions, directly affecting state agencies, vendors, and contractors. It establishes criteria for "authorized payment stablecoins" that meet federal standards (like the GENIUS Act) or are state-issued public-purpose stablecoins, requiring annual lists of approved coins maintained by the state treasurer and controller. Vendors or contractors may choose to receive payments in these stablecoins but are not required to, with disclosures about redemption and risks provided beforehand. The law mandates annual reports to the legislature detailing authorized coins, transaction volumes, cost savings, and how usage benefits state finances, while requiring coordination with federal regulators.