CBP Protest Process: Deadline, Filing, and Further Review

The CBP protest filing process is the formal way to challenge a U.S. Customs and Border Protection decision on an import entry, and it runs on a single hard deadline: you have 180 calendar days from the date of liquidation or the challenged decision to file CBP Form 19 or submit an electronic protest through the ACE Portal. Miss that window and the decision becomes final against you, with no extensions, no waivers, and no judicial second look. The rules live in 19 U.S.C. § 1514 and 19 CFR Part 174.

Which Decisions Qualify for a Protest

The protest mechanism only reaches a defined list of CBP decisions. Anything outside the list becomes final on its own terms and has to be pursued through other channels, if at all. The protestable categories are:

Classification of merchandise under the Harmonized Tariff Schedule and the rate and amount of duties charged.
The appraised value CBP assigned to your goods.
Any charge or exaction within the jurisdiction of the Secretary of the Treasury.
Exclusion of merchandise from entry or delivery, or a demand for redelivery to customs custody.
Liquidation or reliquidation of an entry, including any modification of that computation.
Refusal of a drawback claim.
Refusal to reliquidate a previously liquidated entry.

If your dispute doesn’t fit one of these categories, the protest process is not the tool.

Who Can File

Standing is limited to parties with direct exposure to the decision. Under the statute, the following can file:

The importer of record or consignee shown on the entry papers.
The surety on the entry bond, provided the filing certifies it is not being used to extend another party’s deadline.
Any person who actually paid a duty, fee, or other exaction, as to that specific payment.
Any person seeking entry or delivery of the merchandise, as to a denial of that request.
A drawback claimant, as to a refusal of the claim.
For USMCA country-of-origin determinations, the exporter or producer who completed and signed the certification of origin, even if they are not the importer.

Any of these parties can designate an agent or attorney to file, including a licensed customs broker acting under a power of attorney. An unrelated third party cannot step into someone else’s import dispute.¹

The 180-Day Deadline and How to Find the Start Date

The 180-day clock is jurisdictional. CBP cannot grant extensions, there is no good-cause exception, and no court can revive a late protest. Everything about the process depends on identifying the correct trigger date.

For entries that liquidate normally, the legal date of liquidation is the date CBP posts the electronic notice on cbp.gov. That posted date, kept online for at least 15 months, is the official evidence of liquidation. CBP may also send a courtesy notice to the entry filer or surety, but the courtesy notice is not the formal one, and relying on it is a common way to blow the deadline. For entries that liquidate by operation of law because CBP didn’t act within the statutory period, the liquidation date is the date that statutory period expired, even if the notice is posted later.²

For non-liquidation decisions, such as an exclusion or a drawback refusal, the 180 days run from the date CBP made the decision you’re challenging.¹

What Has to Be in the Protest

Protests are filed on CBP Form 19, or a form of identical size and content in the same order. Paper filings must be submitted in quadruplicate. Electronic filings through ACE do not require copies but must be completed in a single session, because the system does not save partial drafts.³

Under 19 CFR § 174.13, the protest must contain:

The name and address of the importer of record or consignee, and of any agent or attorney signing on their behalf.
The importer number of the protestant, plus the agent’s importer number if an agent is acting under a power of attorney.
The number and date of each entry covered.
The date of liquidation, or the date of the non-liquidation decision being challenged.
A specific description of the affected merchandise, detailed enough to distinguish it from other items on the entry.
The nature of and justification for each objection, stated distinctly and specifically for each category of merchandise or decision.
The date and protest number of any earlier protest on the same merchandise and issues, if you want consistent treatment.
A statement, to the best of your knowledge, about whether the entry is or could become the subject of a drawback claim.

A single protest can cover multiple entries only if all of them involve the same protesting party, the same category of merchandise, and a common decision.⁴

Supporting evidence should go in at filing, not after CBP asks. Commercial invoices, lab reports, prior rulings, and detailed classification or valuation arguments belong with the protest itself. In ACE, documents upload directly into the Protest Module; individual files are capped at 10 MB, but there is no limit on the number of files. If a physical sample is needed, ship it separately to the designated Port or Center of Excellence and Expertise, and note in the protest record when, how, and to whom the sample was sent.³

How to Submit

Electronic Filing Through ACE

Electronic submission through the ACE Secure Data Portal is the preferred route. You need a protest filer account first. If you already have an ACE Portal account for other trade functions, you can request that protest filer capability be added; separate filer accounts can be created under a primary account for different users in your organization. The daily cutoff is 11:59 p.m. Eastern Standard Time, so a protest filed at 11:58 p.m. on day 180 still counts. The system issues confirmation of receipt, which is worth saving as proof of timely filing.³

Paper Filing

Paper protests go on CBP Form 19 in quadruplicate, addressed to CBP at the port of entry where the original entry was processed, with an original signature from the authorized filer or representative. Certified mail gives you a delivery receipt that documents the filing date if timeliness is ever questioned.⁵

Amending a Protest After Filing

You can add claims or challenge an additional decision on the same category of merchandise by filing an amendment, but only before the original 180-day protest deadline runs out. The amendment window is the filing window, not the decision window. Paper amendments go in quadruplicate on CBP Form 19, clearly labeled “Amendment to Protest” at the top; electronic amendments go through the same ACE filing. Only the original filer, or their agent or attorney, can amend.⁶

What Happens After You File

CBP has two years from the date of filing to allow or deny the protest in whole or in part. Many protests sit for months. The three possible outcomes are full allowance, partial allowance, or denial. A partial allowance can still produce a meaningful refund depending on the amounts involved. If CBP allows the protest, any duties found to have been overpaid must be refunded, and any drawback found due must be paid.⁷

Accelerated Disposition

To force a faster answer, you can request accelerated disposition under 19 CFR § 174.22. For entries made on or after December 18, 2004, the request can go in with the protest or any time after, sent by certified or registered mail to the port director, Center director, or other CBP officer who received the protest. The Center director then has 30 days to allow or deny. If nothing happens in that 30-day window, the protest is deemed denied on day 30. A deemed denial carries the same legal weight as an express denial and starts the clock for judicial review. Filers often use this route strategically to move a case to the Court of International Trade rather than wait up to two years.⁸

Application for Further Review

If you want CBP Headquarters to look at the case rather than the local Center, you can file an Application for Further Review (AFR) on CBP Form 19, either on the same form as the protest or on a separate copy, in quadruplicate. To qualify, the protest has to meet at least one of these:

CBP’s decision is inconsistent with a ruling from the Commissioner of CBP or with a prior decision on the same or substantially similar merchandise.
The protest raises questions of law or fact the Commissioner and the customs courts have not previously addressed.
The issue was ruled on before, but you are presenting new facts or legal arguments not considered the first time.
CBP Headquarters previously refused to consider the question when it was raised as a request for internal advice.

⁹

The application must also state that you have not already received an adverse ruling from the Commissioner or a final adverse court decision on the same claim for the same category of merchandise. If you have, the AFR route is generally closed and the courts are the remaining option.¹⁰

Refunds and Interest If You Win

When CBP allows a protest and finds duties were overpaid, the refund is paid within 30 days of the corrective liquidation or reliquidation. Interest accrues from the date you originally deposited the estimated duties through the date of that corrective liquidation. The rate is set quarterly by the IRS based on the federal short-term rate and can change each quarter, so the rate applied to your refund depends on when the overpayment period falls.¹¹¹²

If CBP Denies the Protest

A denial, whether express or deemed, opens a 180-day window to file a civil action in the U.S. Court of International Trade. For an express denial, the 180 days run from the date CBP mails the denial notice. For a deemed denial under accelerated disposition, they run from the date the protest was deemed denied by operation of law. This deadline is as rigid as the protest deadline itself; miss it and the denial stands.¹³

1
Office of the Law Revision Counsel. 19 USC 1514 – Protest Against Decisions of Customs Service
2
eCFR. 19 CFR 159.9 – Notice of Liquidation and Date of Liquidation for Formal Entries
3
U.S. Customs and Border Protection. ACE Protest Frequently Asked Questions
4
eCFR. 19 CFR 174.13 – Contents of Protest
5
eCFR. 19 CFR Part 174 – Protests
6
eCFR. 19 CFR 174.14 – Amendment of Protests
7
Office of the Law Revision Counsel. 19 USC 1515 – Review of Protest
8
eCFR. 19 CFR 174.22 – Accelerated Disposition of Protest
9
eCFR. 19 CFR 174.24 – Criteria for Further Review
10
eCFR. 19 CFR 174.25 – Application for Further Review
11
Office of the Law Revision Counsel. 19 USC 1505 – Payment of Duties and Fees
12
Federal Register. Quarterly IRS Interest Rates Used in Calculating Interest on Overdue Accounts and Refunds of Customs Duties
13
Office of the Law Revision Counsel. 28 USC 2636 – Time for Commencement of Action