Definitions and effective date

(a) Definitions For purposes of this Act: (1) Net income tax The term net income tax has the meaning given that term for the purposes of the Act entitled An Act relating to the power of the States to impose net income taxes on income derived from interstate commerce, and authorizing studies by congressional committees of matters pertaining thereto, approved September 14, 1959 (15 U.S.C. 381 et seq.). (2) Other business activity tax (A) In general The term other business activity tax means any tax in the nature of a net income tax or tax measured by the amount of, or economic results of, business or related activity conducted in the State. (B) Exclusion The term other business activity tax does not include a sales tax, a use tax, or a similar transaction tax, imposed on the sale or acquisition of goods or services, whether or not denominated a tax imposed on the privilege of doing business. (3) Person The term person has the meaning given such term by section 1 of title 1 of the United States Code. Each corporation that is a member of a group of affiliated corporations, whether unitary or not, is itself a separate person. (4) State The term State means any of the several States, the District of Columbia, or any territory or possession of the United States, or any political subdivision of any of the foregoing. (5) Tangible personal property For purposes of section 3(b)(1)(C), the leasing or owning of tangible personal property does not include the leasing or licensing of computer software. (b) Effective Date This Act shall apply with respect to taxable periods beginning on or after January 1, 2026.