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Treas. Reg. § 54.4971-1

General rules relating to excise tax on failure to meet minimum funding standards.
CFR 2005 annual edition (revised as of 2005-04-01) · superseded Apr 1, 2006 · last amended by T.D. 8084, 51 FR 16305, May 2, 1986
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The earliest stored text of this section is effective Apr 1, 1997. Showing that version.
(a) -(b) [Reserved]
(c) Additional tax. Section 4971(b) imposes an excise tax in any case in which an initial tax is imposed under section 4971(a) on an accumulated funding deficiency and the accumulated funding deficiency is not corrected within the taxable period (as defined in section 4971(c)(3)). The additional tax is 100 percent of the accumulated funding deficiency to the extent not corrected.
(d) [Reserved]
(e) Definition of taxable period—(1) In general. For purposes of any accumulated funding deficiency, the term “taxable period” means the period beginning with the end of the plan year in which there is an accumulated funding deficiency and ending on the earlier of:
(i) The date of mailing of a notice of deficiency under section 6212 with respect to the tax imposed by section 4971(a), or
(ii) The date on which the tax imposed by section 4971(a) is assessed.
(2) Special rule. Where a notice of deficiency referred to in paragraph (e)(1)(i) of this section is not mailed because a waiver of the restrictions on assessment and collection of a deficiency has been accepted or because the deficiency is paid, the date of filing of the waiver or the date of such payment, respectively, shall be treated as the end of the taxable period.
Source credit, amendments & notes

[T.D. 8084, 51 FR 16305, May 2, 1986]

Treas. Reg. § 54.4971-1 — General rules relating to excise tax on failure to meet minimum funding standards. · CFR 2005 annual edition (revised as of 2005-04-01) · https://pensionresource.website/EAMain?content=EAMain.Law&id=cfr26-54.4971-1&asof=1983-07-05 · printed Oct 16, 2026
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  • (a) (a) -(b) [Reserved]
  • (c) Additional tax.
  • (d) (d) [Reserved]
  • (e) (e) Definition of taxable period—(1) In general. For purpos…
Implements
I.R.C. § 4971 Taxes on failure to meet minimum funding standards

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Each row is a version of the text as published by the official source. Code dates are the edition/release point that first reflected the change; regulation dates are eCFR effective dates. The library checks the official sources automatically, so new versions appear here on their own; “run” opens the sync that recorded a version.

EffectiveThroughSourceAmended by
Apr 1, 1997Mar 31, 2006CFR 2005 annual edition (revised as of 2005-04-01) run 127T.D. 8084, 51 FR 16305, May 2, 1986View
Apr 1, 2006currenteCFR editorial change effective 2016-12-30 run 2T.D. 8084, 51 FR 16305, May 2, 1986View · Redline (sign in)
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