Idaho Code § 50-1045
Any resort city may establish a city property tax relief fund into which may be placed all or any portion of revenues received from any nonproperty tax levied in accordance with the provisions of this act and such nonproperty tax revenues may be used to replace city property taxes in the ensuing fiscal year by the amount of nonproperty tax revenues placed in the city property tax relief fund if city voters have approved of such use of nonproperty tax revenues in the election authorizing such city nonproperty tax. Any resort city that receives more revenues from any local-option nonproperty tax than such city has budgeted shall establish a city property tax relief fund into which shall be placed all revenues received in excess of the budget amount and such excess revenues shall be used to replace city property taxes in the ensuing fiscal year by the amount of all excess revenues placed in said city property tax relief fund.
Idaho Code § 50-1045