Title 26 › Subtitle D — Miscellaneous Excise Taxes › CHAPTER 42 — PRIVATE FOUNDATIONS; AND CERTAIN OTHER TAX-EXEMPT ORGANIZATIONS › Subchapter E — Abatement of First and Second Tier Taxes in Certain Cases › § 4963
Defines key words used for certain excise taxes. A "first tier tax" means the tax in subsection (a) of sections 4941, 4942, 4943, 4944, 4945, 4951, 4952, 4955, 4958, 4966, 4967, 4971, and 4975. A "second tier tax" means the tax in subsection (b) of sections 4941, 4942, 4943, 4944, 4945, 4951, 4952, 4955, 4958, 4971, and 4975. A "taxable event" is any act or failure to act that creates tax liability under those same sections (including 4966 and 4967 where listed). "Correct" usually means the same as in the second-tier rule, except: for 4942(b) it means reducing undistributed income to zero; for 4943(b) it means reducing excess business holdings to zero; and for 4944 it means removing the investment from jeopardy. The "correction period" runs from when the taxable event happens until 90 days after a notice of deficiency is mailed under section 6212 for the second tier tax, plus any time when a deficiency cannot be assessed under section 6213(a) (ignoring the last sentence of 4961(b)) and any other reasonable time the Secretary allows. For timing, a 4942 event is treated as occurring on the first day of the taxable year with the failure to distribute income, a 4943 event on the first day excess holdings exist, a 4971 event on the last day of the plan year with an accumulated funding deficiency, and other events on the date they occur.
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Internal Revenue Code, Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 4963
Title 26, Internal Revenue Code
Last Updated
Sep 22, 2026
Release point: 119-110