Tax fraud versus negligence

Fraud is an intentional effort to underpay tax; negligence is carelessness or disregard of the rules without intent, and the distinction decides whether a taxpayer faces a 20 percent accuracy penalty, a 75 percent fraud penalty, or a criminal referral.

The IRS infers intent from badges of fraud: concealed income, false records, implausible explanations, dealings in cash, and a pattern of underreporting. A single mistake, even a large one, is usually negligence.

Why it matters: how an audit is handled from the first response can determine which side of the line the IRS lands on. See civil fraud penalty.

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Definitions are general information, not legal advice, and may not reflect the most recent changes in law.