Customs Penalty Statute of Limitations: 19 U.S.C. 1621 Explained

The customs penalty statute of limitations is set by 19 U.S.C. 1621. For negligence and gross negligence violations, CBP must bring an action within five years of the date the violation occurred. For fraud, the five-year clock does not start until the date the violation is discovered. Waivers of the limitations period are permitted, and CBP routinely requests them during penalty negotiations.

Why the Statute of Limitations Matters to Importers

Customs penalties under 19 U.S.C. 1592 can reach the full domestic value of the merchandise for fraud, and substantial percentages of that value for gross negligence and negligence. Knowing when CBP's authority to pursue a penalty expires is therefore a core element of any compliance or litigation strategy. An importer who understands the limitations period can better assess its exposure, decide whether to engage in settlement negotiations, and recognize when a waiver request deserves careful scrutiny.

How the Five-Year Period Works

Negligence and Gross Negligence: Date of Violation

When a violation is classified as negligence or gross negligence, the five-year period runs from the date the underlying act or omission occurred. In practice, that date is typically tied to the entry date or the date the false or inaccurate information was presented to CBP. Because customs entries are date-stamped and retained in the Automated Commercial Environment, CBP can usually pinpoint this date precisely.

Key implications:

• An entry filed more than five years before CBP initiates an action is generally time-barred at the negligence and gross negligence levels.
• Where a pattern of violations spans several years, some entries may be within the limitations period while older entries are not.
• The limitations period applies even if CBP discovers the violation late, as long as the violation itself does not rise to the level of fraud.

Fraud: Date of Discovery

The fraud standard under 19 U.S.C. 1592 requires proof that the importer acted intentionally to defraud the United States. When that higher standard applies, the statute of limitations is measured differently. The five-year clock starts on the date the violation is discovered, not the date it occurred. This distinction is significant because fraud by its nature is often concealed. An importer that deliberately misclassified goods or falsified country-of-origin documents may face penalty exposure for entries that are far older than five years, as long as the government can show it discovered the violation within the preceding five years.

The practical effect is that fraud cases carry a longer effective reach. Importers should not assume that the age of an entry provides protection when intentional conduct is at issue.

Waivers of the Statute of Limitations

CBP frequently asks importers or their counsel to sign a waiver, sometimes called a tolling agreement, during penalty negotiations. A waiver suspends the running of the limitations period for a defined period of time. CBP's rationale is straightforward: penalty proceedings often take many months, and the agency does not want the clock to expire while the parties are engaged in good-faith settlement discussions.

Importers and their counsel should consider several points before signing a waiver:

• Scope: The waiver should specify exactly which entries and which violation dates it covers. An overly broad waiver may revive claims that would otherwise be time-barred.
• Duration: Waivers are typically time-limited. Parties should agree on a defined expiration date and negotiate extensions deliberately rather than signing open-ended agreements.
• Leverage: A refusal to waive is not necessarily a settlement-ending move, but it may prompt CBP to accelerate its penalty timeline. The decision should be made in full awareness of that dynamic.
• Legal counsel: Because a waiver is a legal agreement that affects substantive rights, it warrants review by a trade attorney before execution.

Interaction with the 1592 Penalty Process

The statute of limitations in 19 U.S.C. 1621 operates alongside the procedural steps CBP must follow before issuing a formal penalty. CBP typically issues a pre-penalty notice, accepts a response, and then issues a penalty notice before pursuing collection. Each of those steps takes time, which is exactly why CBP monitors the limitations period and requests waivers when negotiations are ongoing.

For a detailed walkthrough of how CBP moves from pre-penalty notice to final penalty, see CBP Pre-Penalty Notice: The 1592 Penalty Process Step by Step. If your situation involves a penalty that has already been issued and you are considering a formal mitigation petition, CBP Penalty Mitigation: Petitions Under 19 U.S.C. 1618 explains that parallel process in detail.

Statute of Limitations vs. Prior Disclosure

A prior disclosure, filed before CBP has formally initiated a penalty action, can substantially reduce penalty exposure. The availability of prior disclosure is independent of the statute of limitations, but the two interact in an important way: a prior disclosure filed after the limitations period has already expired on certain entries may not generate the same mitigation benefit as one filed while exposure exists. Importers who identify past errors should therefore assess both whether a prior disclosure is appropriate and whether the limitations period is still open. More background on the prior disclosure mechanism is available at CBP Prior Disclosure: How It Works and When to File.

Record Retention and the Five-Year Window

Because the limitations period for negligence and gross negligence runs five years from the date of violation, importers should maintain all entry records, supporting documents, and internal communications for at least that period, and longer where any fraud exposure could theoretically be argued. Strong record retention practices serve two purposes: they enable a credible defense if CBP raises old entries, and they demonstrate the kind of reasonable care that is central to contesting a negligence finding in the first place.

What Importers Should Do

1. Audit your open exposure window. Identify any entries from the past five years that carry classification, valuation, or origin errors, and assess whether those errors could be characterized as negligence, gross negligence, or fraud.
2. Review waiver requests carefully. Before signing any tolling agreement from CBP, have trade counsel confirm the scope, duration, and entries covered so you do not inadvertently extend exposure you believed was time-barred.
3. Consider prior disclosure timing. If internal review surfaces past errors, consult with counsel about whether a prior disclosure filed while the limitations period is still open would be advantageous.
4. Maintain records beyond five years where fraud risk exists. For any transactions where intent could be questioned, retain documentation indefinitely, since the fraud discovery rule gives CBP a longer effective reach.

This article is general information, not legal advice.