Amendments
1988—Subsec. (d). Pub. L. 100–647 struck out subsec. (d) which read as follows: “Tax Preferences.—
“(1) Organizations taxable at corporate rates.—If an organization is subject to tax on unrelated business taxable income pursuant to subsection (a), the tax imposed by section 56 shall apply to such organizations with respect to items of tax preference which enter into the computation of unrelated business taxable income in the same manner as section 56 applies to corporations.
“(2) Organizations taxable as trusts.—If an organization is subject to tax on unrelated business taxable income pursuant to subsection (b), the taxes imposed by section 55 shall apply to such organization with respect to items of tax preference which enter into the computation of unrelated business taxable income.”
1982—Subsec. (d)(2). Pub. L. 97–248 substituted “section 55” for “section 55 and section 56 (as the case may be)”.
1978—Subsec. (a)(1). Pub. L. 95–600, § 301(b)(5)(A), substituted “a tax” for “a normal tax and a surtax”.
Subsec. (a)(2). Pub. L. 95–600, § 301(b)(5)(B), substituted “tax” for “taxes” wherever appearing.
Subsec. (d).
Pub. L. 95–600, § 421(e)(3), substituted provisions relating to organizations taxable at corporate rates and organizations taxable as trusts, for provisions relating to imposition of the tax imposed by
section 56 of this title to an organization subject to tax under this section for tax preferences computed in unrelated business taxable income.
1977—Subsec. (b)(1). Pub. L. 95–30 substituted “section 1(e)” for “section 1(d)”.
1969—Subsec. (a)(2)(A).
Pub. L. 91–172, § 121(a)(1), removed reference, in heading, to pars. (2), (3), (5), (6), (14)(B), (C), and (17) of
section 501(c) of this title, and, in text, struck out exemptions to churches, conventions, or associations of churches, from the imposition of tax on their unrelated business income, made corporations organized under
section 501(c)(1) of this title (i.e. organized under Acts of Congress), exempt from such tax, but made all such exemptions subservient to the exceptions in part II and
section 501(a) of this title.
Subsec. (b)(1). Pub. L. 91–172, § 803(d)(2), substituted section 1(d) for section 1 in reference to section under which the computation of the tax dealing with the imposition of tax on the unrelated business taxable income of trusts, is computed.
Subsec. (b)(2). Pub. L. 91–172, § 121(a)(2), pluralized “trust” in heading and in text made the imposition of tax on the unrelated business income of exempt trusts subject to provisions of part II, and, for purposes of determining trusts exempt from taxation, substituted reference to section 501(a) for reference to “section 501(c)(3) or (17) or section 401(a)”.
Subsec. (c). Pub. L. 91–172, § 121(a)(3), added subsec. (c). Former subsec. (c), covering the effective date, was struck out.
Subsec. (d). Pub. L. 91–172, § 301(b)(8), added subsec. (d).
1966—Subsec. (a)(2)(A). Pub. L. 89–352 inserted “(14)(B) or (C),” after “(6),” in heading and in text.
1960—Subsec. (a)(2). Pub. L. 86–667, § 3(a), included organizations described in section 501(c)(17) within subpar. (A).
Subsec. (b). Pub. L. 86–667, § 3(b), inserted a reference to section 501(c)(17).