C.R.S. § 39-22-329

(1) For the purposes of section 39-22-108 , each resident shareholder shall be considered to have paid a tax imposed on each resident shareholder in an amount equal to each resident shareholder’s pro rata share of any net income tax paid by the S corporation to a state which does not measure the income of shareholders of an S corporation by reference to the income of the S corporation. For the purposes of this section, the term “net income tax” means any tax imposed on, or measured by, an S corporation’s net income. (2) Each shareholder of an S corporation shall be allowed a credit against the tax imposed by section 39-22-104 in an amount equal to each shareholder’s pro rata share of the tax credits described in sections 39-30-103.5 to 39-30-105.6 earned by the S corporation.