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LegalText 26 U.S.C. § 4963 Definitions us united_states_code code_section 26 INTERNAL REVENUE CODE 42 PRIVATE FOUNDATIONS; AND CERTAIN OTHER TAX-EXEMPT ORGANIZATIONS 4963 26 U.S.C. § 4963 current 119-100 2026-06-26 official https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc26@119-100.zip /us/usc/t26/s4963 data/legal/raw/us/code/title-26/usc26.xml 40f03ae72855a796a0db29bfb743b19a97c2a8f64fe4905e589c23ba02262709 a261f094809116f42a96648a3d5eee80fa010379d67412551c21dd5c900b27f4 87d408c6d66e9e2fac5565b87ff30a13d4c9c78c86341a29ec25679aa619d374 2026-07-04 official
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26 U.S.C. § 4963 - Definitions

Text

(a) First tier tax For purposes of this subchapter, the term “first tier tax” means any tax imposed by subsection (a) of section 4941, 4942, 4943, 4944, 4945, 4951, 4952, 4955, 4958, 4966, 4967, 4971, or 4975.

(b) Second tier tax For purposes of this subchapter, the term “second tier tax” means any tax imposed by subsection (b) of section 4941, 4942, 4943, 4944, 4945, 4951, 4952, 4955, 4958, 4971, or 4975.

(c) Taxable event For purposes of this subchapter, the term “taxable event” means any act (or failure to act) giving rise to liability for tax under section 4941, 4942, 4943, 4944, 4945, 4951, 4952, 4955, 4958, 4966, 4967, 4971, or 4975.

(d) Correct For purposes of this subchapter—

(1) In general Except as provided in paragraph (2), the term “correct” has the same meaning as when used in the section which imposes the second tier tax.

(2) Special rules The term “correct” means—

(A) in the case of the second tier tax imposed by section 4942(b), reducing the amount of the undistributed income to zero,

(B) in the case of the second tier tax imposed by section 4943(b), reducing the amount of the excess business holdings to zero, and

(C) in the case of the second tier tax imposed by section 4944, removing the investment from jeopardy.

(e) Correction period For purposes of this subchapter—

(1) In general The term “correction period” means, with respect to any taxable event, the period beginning on the date on which such event occurs and ending 90 days after the date of mailing under section 6212 of a notice of deficiency with respect to the second tier tax imposed on such taxable event, extended by—

(A) any period in which a deficiency cannot be assessed under section 6213(a) (determined without regard to the last sentence of section 4961(b)), and

(B) any other period which the Secretary determines is reasonable and necessary to bring about correction of the taxable event.

(2) Special rules for when taxable event occurs For purposes of paragraph (1), the taxable event shall be treated as occurring—

(A) in the case of section 4942, on the first day of the taxable year for which there was a failure to distribute income,

(B) in the case of section 4943, on the first day on which there are excess business holdings,

(C) in the case of section 4971, on the last day of the plan year in which there is an accumulated funding deficiency, and

(D) in any other case, the date on which such event occurred.

(Added Pub. L. 96596, § 2(c)(1), Dec. 24, 1980, 94 Stat. 3473, § 4962; renumbered § 4963, Pub. L. 98369, div. A, title III, § 305(a), July 18, 1984, 98 Stat. 783; amended Pub. L. 100203, title X, § 10712(b)(3), Dec. 22, 1987, 101 Stat. 1330467; Pub. L. 104168, title XIII, § 1311(c)(2), July 30, 1996, 110 Stat. 1478; Pub. L. 109280, title XII, § 1231(b)(1), Aug. 17, 2006, 120 Stat. 1098.)

Notes

Editorial Notes

Amendments2006—Subsecs. (a), (c). Pub. L. 109280, which directed the insertion of “4966, 4967,” after “4958,” in subsecs. (a) and (c) of section 4963, without specifying the act to be amended, was executed by making the insertion in subsecs. (a) and (c) of this section, which is section 4963 of the Internal Revenue Code of 1986, to reflect the probable intent of Congress. 1996—Subsecs. (a) to (c). Pub. L. 104168 inserted “4958,” after “4955,”. 1987—Subsecs. (a) to (c). Pub. L. 100203 inserted reference to section 4955 of this title.

Statutory Notes and Related Subsidiaries

Effective Date of 2006 AmendmentPub. L. 109280, title XII, § 1231(c), Aug. 17, 2006, 120 Stat. 1098, provided that: “The amendments made by this section [enacting subchapter G of this chapter and amending this section] shall apply to taxable years beginning after the date of the enactment of this Act [Aug. 17, 2006].”

Effective Date of 1996 AmendmentAmendment by Pub. L. 104168 applicable to excess benefit transactions occurring on or after Sept. 14, 1995, and not applicable to any benefit arising from a transaction pursuant to any written contract which was binding on Sept. 13, 1995, and at all times thereafter before such transaction occurred, see section 1311(d)(1), (2) of Pub. L. 104168, set out as a note under section 4955 of this title.

Effective Date of 1987 AmendmentAmendment by Pub. L. 100203 applicable to taxable years beginning after Dec. 22, 1987, see section 10712(d) of Pub. L. 100203, set out as an Effective Date note under section 4955 of this title.

Effective DateFor effective date of section with respect to any first tier tax and to any second tier tax, see section 2(d) of Pub. L. 96596, set out as a note under section 4961 of this title.