Idaho Code § 63-106
The state tax commission is authorized to accept, receipt, disburse and expend federal moneys, made available to accomplish in whole or in part any of the purposes of the laws enforced by the state tax commission. All moneys accepted under the provisions of this section shall be accepted and expended by the state tax commission upon such terms and conditions as prescribed by the United States. All moneys received by the state tax commission pursuant to this section shall be deposited in the state treasury and, unless otherwise prescribed by the authority in which said moneys were received, shall be kept in separate funds designated according to the purpose for which the moneys were made available, and held by the state in trust for such purposes. All such moneys are hereby appropriated for the purpose for which the same were made available, and the state tax commission is empowered to disburse or expend said moneys in accordance with the terms and conditions upon which they were made available.
Idaho Code § 63-106