Idaho Code § 67-7439: Taxes.

Income taxes shall only be imposed on lottery prizes received from lottery tickets purchased after the effective date of this act. Lottery prizes awarded by the Idaho state lottery under six hundred dollars ($600) shall not be subject to the state income tax. No taxes of any kind whatsoever shall be imposed upon the sale, purchase, storage, use or other consumption of Idaho lottery tickets or shares, or upon equipment, devices or systems directly used in the production, operation, sales, distribution, tracking, drawing, accounting, communication of or computation of lottery games.

The state lottery shall pay to a city, county, the state or any political subdivision or municipality thereof in which the state lottery occupies a premises owned by the state a grant not to exceed the amount that would be payable as taxes on the property in that year, if the property were not exempt from taxation.