INTERNATIONAL TRADE LAW
CBP Form 29 Notice of Action: How to Respond
A CBP Form 29, the Notice of Action, is U.S. Customs and Border Protection’s formal notice that it is changing — or proposing to change — something on your entry: usually the tariff classification, the declared value, or the duty rate. The single most important thing on the form is which box is checked. “Action Proposed” means you have 20 days to talk CBP out of it. “Action Taken” means the change is already made, and your remedy is a protest after liquidation. Either way, the form is telling you that more duties are coming unless you act.
This guide explains what triggers a Form 29, the difference between proposed and taken action, how to respond effectively, and what happens if you don’t.
What a CBP Form 29 Is
CBP Form 29 is the notice required by 19 CFR 152.2: when CBP believes the entered rate or value of merchandise is too low (or the quantity exceeds what was entered) and the duty increase on the entry exceeds $15, it must promptly notify the importer of the nature of the difference. In practice, a Form 29 typically announces one of three things:
- A rate advance — CBP disagrees with your tariff classification and is applying a higher duty rate, including additional tariffs (Section 301, Section 232, antidumping/countervailing duties).
- A value advance — CBP believes the declared value is too low, often after questioning related-party pricing, assists, or undeclared additions to price.
- A classification or origin change — which can cascade into both of the above.
The form identifies the entry number, describes the change and its legal basis, and states whether the action is proposed or has been taken.
“Action Proposed” vs. “Action Taken”
The two versions of the form carry very different stakes and clocks.
| Action Proposed | Action Taken | |
|---|---|---|
| What it means | CBP intends to change the entry but hasn’t yet | CBP has already changed the entry |
| Your window | 20 days from the date of the notice | None before liquidation — entry proceeds to liquidate as changed |
| Best response | Persuade CBP now with law and documents | Prepare to protest within 180 days of liquidation |
| If you succeed | Entry liquidates as you filed it | Protest granted; duties refunded with interest |
The 20-day window comes straight from the regulation: liquidation generally won’t be withheld more than 20 days from the date the notice is mailed unless CBP finds compelling reasons. Extensions are sometimes granted on request, but never assume one.
Form 28 vs. Form 29: Question vs. Conclusion
A CBP Form 28, Request for Information, is a question — CBP asking for invoices, payment records, or classification support because something looks off. A Form 29 is a conclusion: CBP has reviewed what it has and decided (or tentatively decided) you got it wrong. Many Form 29s follow an unanswered or poorly answered Form 28, which is why a weak CF-28 response is one of the most expensive shortcuts in importing. If you receive either form, assume your other entries with the same merchandise are getting the same scrutiny.
How to Respond Effectively
A Form 29 response is a legal brief in miniature, not a complaint letter. Within the 20 days, an effective response does three things:
- States the correct treatment with authority. Cite the HTSUS provisions, General Rules of Interpretation, CBP rulings, court decisions, or valuation regulations (19 CFR Part 152) that support your entered classification or value.
- Proves the facts. Attach the evidence CBP needs to agree with you — product specifications, engineering documents, bills of materials, transfer-pricing studies, supplier declarations, origin records.
- Addresses scope. If CBP’s theory would apply to your other entries, say so strategically — a persuasive response on one entry can shut down a rate advance across all of them, while a sloppy one can invite it.
If CBP’s position is partly right, conceding the point and correcting it credibly is usually better than fighting everything. Credibility with the import specialist and the Center of Excellence reviewing your account is an asset that outlasts any single entry.
What Happens If You Ignore a Form 29
The entry liquidates with the change CBP described, and you get a bill for the increased duties, plus interest. Liquidation converts CBP’s position into a final decision — and your last administrative remedy is a protest under 19 U.S.C. § 1514, filed within 180 days of liquidation (on CBP Form 19 or electronically through the ACE Protest Module). The 180 days are calendar days, the deadline is statutory, and missing it forfeits both administrative review and access to the Court of International Trade. A protest is a real remedy — CBP grants meritorious ones and refunds duties with interest — but it is slower, costlier, and colder than persuading CBP during the 20-day window, when the official who issued the notice can simply not take the action.
| Stage | Deadline | Remedy |
|---|---|---|
| Action Proposed | 20 days from notice | Written response; action not taken |
| Action Taken / liquidation | 180 days after liquidation | Protest under 19 U.S.C. § 1514 |
| Protest denied | 180 days after denial | Suit at the Court of International Trade |
When to Consider a Prior Disclosure
Sometimes the Form 29 is right — and the same error runs through dozens or hundreds of your entries. If responding truthfully would reveal a pattern of misclassification, undervaluation, or false origin claims, you may be facing penalty exposure under 19 U.S.C. § 1592, where penalties for negligence can reach twice the lost duties and for fraud the full domestic value of the merchandise. A prior disclosure, filed before CBP commences a formal investigation, caps penalties dramatically — typically to interest on the lost duties in negligence cases. The order of operations matters enormously here: a Form 29 means CBP is already looking, but a valid disclosure window may still be open. This is the point at which to involve counsel before responding, not after.
Frequently Asked Questions
Is a CBP Form 29 a penalty?
No. It changes the duties owed on an entry; it is not itself a fine. But the facts behind a Form 29 — especially repeated misclassification or undervaluation — can ripen into a penalty case, and ignoring the notice makes that more likely.
How long do I have to respond to a CBP Form 29?
If the notice is marked “Action Proposed,” 20 days from its date. If marked “Action Taken,” there is no pre-liquidation response — your remedy is a protest within 180 days after the entry liquidates.
Can I get money back after CBP takes action?
Yes, through a timely protest. If CBP grants it, the entry is reliquidated and overpaid duties are refunded with interest. If the protest is denied, you can sue at the Court of International Trade within 180 days of the denial.
Does a Form 29 affect my other shipments?
Usually. CBP applies its position to your future entries of the same merchandise, and can review past entries that haven’t liquidated. A seizure is a different and more severe track — if you receive a notice of seizure, separate deadlines apply.
A Form 29 is winnable — but only inside the window, and only with a response built on authority and evidence. Reidel Law Firm represents importers in Form 29 responses, protests, and prior disclosures nationwide, and our flat-fee import/export compliance memo gives you a fixed-cost assessment of your classification and valuation exposure before CBP finds it first.
