§ 1.6662-1 - Overview of the accuracy-related penalty.

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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:

Negligence or disregard of rules or regulations;

Any substantial understatement of income tax;

Any substantial valuation misstatement under chapter 1;

Any substantial overstatement of pension liabilities; or

Any substantial estate or gift tax valuation understatement.