Oregon Revised Statutes Revenue and Taxation § 318.020

(1) There hereby is imposed upon every corporation for each taxable year a tax at the rate provided in ORS 317.061 upon its Oregon taxable income derived from sources within this state, other than income for which the corporation is subject to the tax imposed by ORS chapter 317 according to or measured by its Oregon taxable income.

(2) Income from sources within this state includes income from tangible or intangible property located or having a situs in this state and income from any activities carried on in this state, regardless of whether carried on in intrastate, interstate or foreign commerce.

(3) Income that constitutes net long-term capital gain described in ORS 317.063 shall be taxed at the rate imposed under ORS 317.063.