§ 1.882-1. Taxation of foreign corporations engaged in U.S. business or of foreign corporations treated as having effectively connected income.

¶(a) Segregation of income. This section applies for purposes of determining the tax of a foreign corporation which at any time during the taxable year is engaged in trade or business in the United States. It also applies for purposes of determining the tax of a foreign corporation which at no time during the taxable year is engaged in trade or business in the United States but has for the taxable year real property income or interest on obligations of 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. A foreign corporation to which this section applies must segregate its gross income for the taxable year into two categories, namely, the income which is effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation and the income which is not effectively connected for the taxable year with the conduct of a trade or business in the United States by that corporation. A separate tax shall then be determined upon each such category of income, as provided in paragraph (b) of this section. The determination of whether income or gain is or is not effectively connected for the taxable year with the conduct of a trade or business in the United States by the foreign corporation shall be made in accordance with section 864(c) and §§ 1.864-3 through 1.864-7. For purposes of this section income which is effectively connected for the taxable year with the conduct of a trade or business in the United States includes all income which is treated under section 882 (d) or (e) and § 1.882-2 as income which is effectively connected for the taxable year with the conduct of a trade or business in the United States by the foreign corporation.

¶(b) Imposition of tax—

¶(c) Change in trade or business status. The principles of paragraph (c) of § 1.871-8 shall apply to cases where there has been a change in the trade or business status of a foreign corporation.

¶(d) Credits against tax. The credits allowed by section 32 (relating to tax withheld at source on foreign corporations), section 33 (relating to the foreign tax credit), section 38 (relating to investment in certain depreciable property), section 39 (relating to certain uses of gasoline and lubricating oil), section 40 (relating to expenses of work incentive programs), and section 6042 (relating to overpayments of a tax) shall be allowed against the tax determined in accordance with this section. However, the credits allowed by sections 33, 38, and 40 shall not be allowed against the flat tax of 30 percent imposed by section 881(a) and paragraph (b)(1) of this section. For special rules applicable in determining the foreign tax credit, see section 906(b) and the regulations thereunder. For the disallowance of certain credits where a return is not filed for the taxable year see section 882(c)(2) and the regulations thereunder.

¶(e) Payment of estimated tax. Every foreign corporation which for the taxable year is subject to tax under section 11 or 1201(a) and this section must make payment of its estimated tax in accordance with section 6154 and the regulations thereunder. In determining the amount of the estimated tax the foreign corporation must treat the tax imposed by section 881(a) and paragraph (b)(1) of this section as though it were a tax imposed by section 11.

¶(f) 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 1.882-1 (Revised as of January 1, 1971).