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Treas. Reg. § 1.6662-1

Overview of the accuracy-related penalty.
eCFR amendment effective 2016-12-30 · current · last amended by T.D. 8617, 60 FR 45664, Sept. 1, 1995
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The earliest stored text of this section is effective Dec 30, 2016. Showing that version.
Section 6662 imposes an accuracy-related penalty on any portion of an underpayment of tax required to be shown on a return that is attributable to one or more of the following:
(a) Negligence or disregard of rules or regulations;
(b) Any substantial understatement of income tax;
(c) Any substantial valuation misstatement under chapter 1;
(d) Any substantial overstatement of pension liabilities; or
(e) Any substantial estate or gift tax valuation understatement.
Sections 1.6662-1 through 1.6662-5 address only the first three components of the accuracy-related penalty, i.e., the penalties for negligence or disregard of rules or regulations, substantial understatements of income tax, and substantial (or gross) valuation misstatements under chapter 1. The penalties for disregard of rules or regulations and for a substantial understatement of income tax may be avoided by adequately disclosing certain information as provided in § 1.6662-3(c) and §§ 1.6662-4(e) and (f), respectively. The penalties for negligence and for a substantial (or gross) valuation misstatement under chapter 1 may not be avoided by disclosure. No accuracy-related penalty may be imposed on any portion of an underpayment if there was reasonable cause for, and the taxpayer acted in good faith with respect to, such portion. The reasonable cause and good faith exception to the accuracy-related penalty is set forth in § 1.6664-4.
Source credit, amendments & notes

[T.D. 8381, 56 FR 67498, Dec. 31, 1991, as amended by T.D. 8617, 60 FR 45664, Sept. 1, 1995]

Treas. Reg. § 1.6662-1 — Overview of the accuracy-related penalty. · eCFR amendment effective 2016-12-30 · https://pensionresource.website/EAMain?content=EAMain.Law&id=cfr26-1.6662-1&asof=2010-09-09 · printed Oct 25, 2026
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  • (a) (a) Negligence or disregard of rules or regulations;
  • (b) (b) Any substantial understatement of income tax;
  • (c) (c) Any substantial valuation misstatement under chapter 1;
  • (d) (d) Any substantial overstatement of pension liabilities; or
  • (e) (e) Any substantial estate or gift tax valuation understate…
Implements
I.R.C. § 6662 Imposition of accuracy-related penalty on underpayments

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EffectiveThroughSourceAmended by
Dec 30, 2016currenteCFR amendment effective 2016-12-30T.D. 8617, 60 FR 45664, Sept. 1, 1995View
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