(a) In general—(1) Inclusions. The gross income of a foreign corporation for any taxable year includes only (i) the gross income which is derived from sources within the United States and which is not effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation and (ii) the gross income, irrespective of whether such income is derived from sources within or without the United States, which is effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation. For the determination of the sources of income, see sections 861 through 863, and the regulations thereunder. For the determination of whether income from sources within or without the United States is effectively connected for the taxable year with the conduct of a trade or business in the United States, see sections 864(c) and 882 (d) and (e), §§ 1.864-3 through 1.864-7, and § 1.882-2.
(2) Exchange transactions. Even though a foreign corporation which effects certain transactions in the United States in stocks, securities, or commodities during the taxable year may not, by reason of section 864(b)(2) and paragraph (c) or (d) of § 1.864-2, be engaged in trade or business in the United States during the taxable year through the effecting of such transactions, nevertheless it shall be required to include in gross income for the taxable year the gains and profits from those transactions to the extent required by paragraph (c) of § 1.881-2 or by paragraph (a) of § 1.882-1.
(3) Exclusions. For exclusions from gross income of a foreign corporation, see § 1.883-1.
(b) Foreign corporations not engaged in U.S. business. In the case of a foreign corporation which at no time during the taxable year is engaged in trade or business in the United States the gross income shall include only (1) the gross income from sources within the United States which is described in section 881(a) and paragraphs (b) and (c) of § 1.881-2, and (2) the gross income from sources within the United States which, by reason of section 882 (d) or (e) and § 1.882-2, is treated as effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation.
(c) Foreign corporations engaged in U.S. business. In the case of a foreign corporation which is engaged in trade or business in the United States at any time during the taxable year, the gross income shall include (1) the gross income from sources within and without the United States which is effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation, (2) the gross income from sources within the United States which, by reason of section 882 (d) or (e) and § 1.882-2, is treated as effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation, and (3) the gross income from sources within the United States which is described in section 881(a) and paragraphs (b) and (c) of § 1.881-2 and is not effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation.
(d) Effective date. This section applies for taxable years beginning after December 31, 1966. For corresponding rules applicable to taxable years beginning before January 1, 1967, see 26 CFR 1.882-2 (Revised as of January 1, 1971).
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