A CBP pre-penalty notice under Section 1592: what it says and what to do before the deadline

What is a pre-penalty notice?

A pre-penalty notice is the first formal step in a civil penalty case under 19 U.S.C. 1592, the statute that penalizes entering goods by means of a material false statement, act or omission made through negligence, gross negligence or fraud. Section 1592(b)(1) requires CBP to send it before any penalty claim, and 19 CFR 162.77 sets out when: the Fines, Penalties and Forfeitures Officer has reasonable cause to believe a violation occurred and decides further proceedings are warranted. The notice is CBP's statement of intent to issue a claim, not the claim itself. No money is due on it.

Two exceptions in 162.77(c) skip the notice altogether: claims of $1,000 or less and noncommercial importations. Everything else, including a case that began with a CF-28, a CF-29, a focused assessment or an investigation, reaches the importer as a pre-penalty notice first.

Do not confuse the notice with a CF-29. Customs Form 29 is the notice of action 19 CFR 152.2 uses to tell an importer, before liquidation, that CBP thinks the entered rate, value or quantity is wrong. It changes the duty on that entry; it proposes no penalty and starts none of the clocks below. A CF-29 can be the first sign that a penalty case is coming, but the case itself only starts with a document that cites 19 U.S.C. 1592 and contains the items in the next section.

By the time a notice arrives, CBP has already decided three things that matter for the rest of the case. It has picked a tentative culpability level, which CBP's own guidelines (19 CFR part 171, Appendix B, paragraph (E)(1)(a)) say must match the evidence at the time of issue. It has calculated a statute of limitations date, and Appendix B paragraph (E)(1)(a) requires the notice to say that CBP bases its actions on the earliest date the limitation period could be asserted. And it has computed an estimated loss of duties, which every later figure in the case is a multiple of.

This page covers what to do with the notice in the days you have. How CBP turns the loss figure into a penalty amount, and how the mitigation guidelines work, is on how CBP sizes a Section 1592 penalty. Involve trade counsel as soon as the notice arrives; this page describes the process and the numbers with their instruments and is not legal advice.

What must the notice contain, and where does each item sit in your data?

Section 1592(b)(1)(A) and 19 CFR 162.77(b) list six things the notice must contain. Each one points at fields you already hold, in the broker's entry export, the Form 7501s and the invoice file. Reading the notice against those fields is the first job.

The Form 7501 field-by-field guide explains each block and column if the notice cites one you do not work with every day.

The statute adds a seventh item: the notice must tell you that you have a reasonable opportunity to make oral and written representations on why a claim should not issue in the amount stated (1592(b)(1)(A)(vii)). 162.77(b)(2) turns that into the 30-day right described below.

How long do you have to respond?

The clocks in a 1592 case are counted from mailing, not receipt, and several of them shorten when the limitation period is close. The full sequence, with its instruments:

Two practical consequences follow from the table.

The oldest cited entry sets the pace. Section 1592(a) is violated by entering goods by means of a material false statement or omission, so the five years under 19 U.S.C. 1621 run from the entry made with it. Appendix B (E)(1)(a) says CBP bases its actions on the earliest date the limitation period may be asserted, the date of the alleged violation, and (E)(1)(d) tells the officer to compute the period as if the case were negligence or gross negligence even when fraud is alleged. An entry made in March 2022 reaches five years in March 2027. A notice mailed in October 2026 that includes it has less than a year left, so CBP may set a response period as short as 7 days, and Appendix B (E)(1)(d) says further time is then granted only with a waiver of the statute of limitations. Whether to sign a waiver is a decision for counsel, but you should know before the notice arrives which of your entries are within a year of their five-year date.

An extension has to be asked for in writing. 162.78(b) allows extensions only on written request, and only while at least a year remains. Ask early, with a reason that part 171 recognizes, and keep the request and the answer.

How do you rebuild CBP's loss figure from your own entry export?

The estimated loss of duties is the number every later step multiplies, so it is the number to test first. 19 CFR 162.71 and Appendix B (D) define it, and the definitions give you the method.

1. List every cited entry and line. From the broker's entry export, pull entry number, entry date, port, line number, HTS number declared, entered value, the rate and duty declared on each Chapter 1 to 97 line and each Chapter 99 line, and the fees.
2. Recompute the duty under CBP's position. Apply the classification, value or origin the notice says was correct, at the rate that applied on that entry's date. Rates in Chapter 99 have changed often since 2025, so a rate that applied on one entry date may not have applied on another. The duty calculator shows the rate in force on a given date.
3. Include every duty, tax and fee the error moved. Appendix B (D)(1) counts marking, antidumping and countervailing duties and fees such as the merchandise processing fee and the harbor maintenance fee as part of a duty loss. A value error usually moves the MPF too; a classification error at the same value usually does not.
4. Split the loss by liquidation status. Under 162.71(a), an actual loss is on entries whose liquidation had become final; a potential loss is on entries whose liquidation had not. Appendix B (D)(5) adds them into the total loss of duty, and says paying either one does not reduce the total used for the penalty. The split still matters: the actual loss is what a penalty notice will demand under 162.79(b)(2), and the potential loss is collected when the entry liquidates.
5. Compare your total with CBP's, line by line. Differences usually trace to a rate applied on the wrong date, a fee counted that the error did not change, a line counted twice across a split entry, or a value base that includes freight. Each difference is a point for the written presentation.

A worked example, with illustrative rates. A notice mailed on October 13, 2026 alleges that one product family was declared at a 3 percent rate when the correct number carried 6 percent on every entry date, and cites five entries.

The total loss is $18,000: $13,950 actual and $4,050 potential. If the notice says $21,600, the gap is worth finding before the presentation. It might be a sixth entry you have not matched, a fee, or a rate applied to a value that included freight. The response is due 30 days from mailing, November 12, 2026, unless the notice set a shorter period. Entry 1 reaches its five-year date on March 10, 2027, so a shorter period of at least 7 days would have been open to CBP. Under the negligence ceiling in 19 U.S.C. 1592(c)(3), this case could not exceed $36,000, two times the loss, unless the domestic value of the goods were lower. How CBP sizes a Section 1592 penalty works the ranges for each culpability level on a set of lines like these.

Why run the check on every entry, not only the cited ones?

A notice lists the entries CBP found. Your export lists every entry you made. The same line check, run across all of them, answers three questions the notice cannot.

Are there more underpaid entries of the same kind? If the same goods were declared the same way on entries the notice does not list, assume CBP will find them. Note what 19 CFR 162.74(i)(1)(iv) does to them: once CBP issues a pre-penalty or penalty notice relating to the type of or circumstances of a violation, you are presumed to know of a formal investigation of that violation. A prior disclosure of the uncited entries of the same kind faces that presumption. It can be rebutted under 162.74(i)(2), and counsel will judge whether that is realistic. What the presumption does not reach is a violation of a different kind found in the same review: a valuation error on other goods, a missed Chapter 99 line on another product. Those can still be disclosed under 19 CFR 162.74 if CBP has not started an investigation of them, and the prior disclosure guide covers how to scope one.

Did the same error overpay elsewhere? Classification and origin errors rarely run one way. The same review often finds lines where the goods were declared under a number with a higher rate than the one CBP now says is correct, or Chapter 99 duties paid on goods an exclusion covered. Those are findings too. If the case arose from a CBP audit, 19 U.S.C. 1509(b)(6)(A) requires CBP, in calculating the loss or penalty under Section 1592, to offset overpayments on finally liquidated entries within the scope and period of that audit against the underpayments on finally liquidated entries, unless the overpayments were made to violate the law. Outside an audit, overpayments are refund claims with their own clocks: a post-summary correction before liquidation, a protest within 180 days after it. How long do you have to fix a past entry has those windows. Do not let them run out while the penalty case is open.

Is CBP's correct rate itself right on every date? If CBP's position is that the goods belonged under a different number, check that number's rate on each entry date, including any Chapter 99 duties that number carried and yours did not. A reclassification can add a Section 232 or Section 301 line that the original number never had, and the notice's loss figure should include it if it applied on that date. It can also remove one.

What can the written and oral presentation argue?

19 CFR 162.78(c) says the written presentation needs no particular form, should answer the allegations, and should give the reasons the claim should not issue or should be lower. 162.78(d) allows one written and one oral presentation as of right, and more at the officer's discretion. The grounds the law gives, each of which counsel will weigh:

1. No violation. Under 1592(a)(2) and 19 CFR 162.73(c), a clerical error or mistake of fact is not a violation unless it is part of a pattern of negligent conduct. Appendix B (D)(7) and (D)(8) define both, and (A) adds that the unintentional repetition of an initial clerical error by an electronic system is generally not a pattern, unless CBP drew your attention to it and you did not correct it.
2. Not material. Appendix B (B) defines materiality broadly, as a natural tendency to influence CBP's action on classification, appraisement, admissibility, duty liability, statistics, origin and more. It also says the "but for" test does not apply. This ground is narrow.
3. A lower culpability level. The levels are defined in Appendix B (C), and the level picks the range. Since Appendix B (E)(2)(b) says the level in the pre-penalty notice will generally not rise in the penalty notice, this presentation is where a lower one is argued. The records that show care was taken are on reasonable care for importers.
4. A wrong loss figure. The rebuild above.
5. Mitigating factors. Appendix B (G) lists them, and each counts only if the case record establishes it. One of them runs on this calendar: paying the actual loss before the penalty notice, and within 30 days of CBP telling you the amount, counts as immediate remedial action. The full list, and what each factor does to the figure, is on how CBP sizes a Section 1592 penalty.

Where the case could end up matters for how the presentation is written. In a 1592 suit at the Court of International Trade, every issue, including the amount, is tried de novo (1592(e)(1)). For negligence, CBP must prove the act or omission and the importer must prove it did not result from negligence (1592(e)(4)). For gross negligence CBP must prove every element, and for fraud it must do so by clear and convincing evidence (1592(e)(2) and (3)).

What happens after you respond?

Under 19 CFR 162.79, the officer considers the presentation and either finds no violation, which ends the case with a written notice, or issues a penalty notice. The penalty notice must state any changes from the pre-penalty notice and inform you of the right to apply for relief under 19 U.S.C. 1618. Where you are liable for an actual loss of duties, it must identify the entries, state the amount and how it was calculated, and require deposit within 30 days of the notice (162.79(b)(2)). Under Section 1592(d), CBP must require lost duties to be restored whether or not a penalty is assessed.

From the penalty notice, 19 CFR part 171 takes over. The petition is filed with the Fines, Penalties and Forfeitures office named in the notice within 60 days of mailing (171.2), signed by the petitioner, an attorney, a customs broker or a responsible corporate officer or employee (171.1(b)). For 1592 cases an oral presentation is also available (171.3(a)). The decision comes in writing with findings of fact and conclusions of law (171.21). It cannot be protested (171.23(a)), and paying a mitigated amount is an accord and satisfaction of the claim, though it does not bar a supplemental petition (171.23(b)). The supplemental petition is due within 60 days of the decision, or of a later decision that reduces the loss of duties (171.61), and CBP may require a waiver of the statute of limitations first if less than a year remains (171.64). If a petition is not filed in time in a shortened-period case, the matter goes to the Office of Chief Counsel for referral to the Department of Justice (171.2(e)), and once a case is referred, CBP takes no further action on petitions (171.13(a)).

How does a line-level audit help when a notice arrives?

The work in the first week is mostly data work: match the cited entries, rebuild the loss, run the same test on everything else, and find what each line's liquidation status is today. That is the same work a post-entry audit does on a standing basis. TariffSense reads broker entry exports and entry summaries in any layout and flags each line where the declared duty differs from what the measures in force on the entry date required, in both directions, with the entry date, line number and liquidation data attached. The post-entry audit page shows what goes in and what comes back. The presentation, the petition and any disclosure remain documents for the importer and counsel.

What should you do this week?

1. Write the mailing date of the notice on your calendar, compute day 30, and check whether the notice set a shorter period.
2. Send the notice to trade counsel the day it arrives.
3. Pull the five-year entry export and find every cited entry and line. Note each entry's liquidation status and five-year date.
4. Rebuild the loss figure line by line, split into actual and potential, and list every difference from CBP's figure.
5. Run the same check on every entry with the same goods, and on everything else, in both directions. Separate the uncited same-kind entries, the different-kind findings and the overpayments, and give counsel all three lists.
6. Gather the dated records of how the original classification, value or origin decision was made, and the evidence for any mitigating factor in Appendix B (G).

The post-entry audit pillar describes the line checks in detail. If the case began with a request for information, CF-28 and CF-29: how to audit yourself before CBP asks covers that earlier stage, and the focused assessment guide covers the audit route.