Idaho Statutes Title 63. Revenue and Taxation § 63-3025A. Franchise tax

(1) For taxable years commencing on and after January 1, 2001, a franchise tax shall be imposed upon any corporation, other than an S corporation, for the privilege of exercising its corporate franchise within the state during such taxable year including, but not limited to, corporations engaged in business in Idaho for the exclusive purpose of performing contracts with the United States department of energy at the Idaho national laboratory or any successor organization, which tax shall be measured by income which is attributable to this state under the provisions of this chapter and which tax shall be at the rate provided in section 63-3025, Idaho Code.

(2) In the case of an S corporation that is required to file a return under section 63-3030, Idaho Code, a tax is hereby imposed at the rate provided in subsection (1) of this section upon both:

(3) The tax imposed by subsection (1) or (2) of this section shall not be less than twenty dollars ($20.00);  provided further that the twenty dollar ($20.00) minimum payment shall not be collected from nonproductive mining corporations;  but the twenty dollar ($20.00) minimum tax shall apply to corporations qualified to file returns and actually filing returns under the provisions of subchapter “S” of the Internal Revenue Code.