Under 19 USC 1504, the liquidation deadline gives U.S. Customs and Border Protection one year from the date of entry to finalize the duties, taxes, and fees on an imported shipment.1Office of the Law Revision Counsel. 19 USC 1504 – Limitation on Liquidation If CBP doesn’t act within that year, and hasn’t extended or suspended the deadline, the entry is deemed liquidated by operation of law at whatever the importer originally declared. That backstop protects importers from indefinite uncertainty, but extensions and suspensions can push the real deadline much further out.
The One-Year Clock and What Liquidation Means
Liquidation is the final accounting on an import entry: CBP settles on the exact classification, value, rate, and total owed. Until liquidation, every duty payment sitting with CBP is only an estimate. The statute sets a one-year window from the date of entry to complete that process for consumption entries.1Office of the Law Revision Counsel. 19 USC 1504 – Limitation on Liquidation
The one-year rule covers formal entries generally, including entries subject to antidumping and countervailing duties and reconciliation entries. Drawback claims run on their own liquidation track tied to the underlying import entries, but the same one-year deadline and deemed-liquidation rule apply to them.2eCFR. 19 CFR Part 190 Subpart H – Liquidation and Protest of Drawback Entries
What Happens if CBP Misses the Deadline
When CBP fails to act within the year and hasn’t properly extended or suspended the deadline, the entry is “deemed liquidated.” The rate, value, quantity, and amount lock in at whatever the importer declared on entry.1Office of the Law Revision Counsel. 19 USC 1504 – Limitation on Liquidation The statute waives any requirement that CBP send a separate notice when this happens.
For an importer who was confident in the classification and valuation on entry, this is usually a favorable result. It also shifts a real burden onto you: nobody is going to write and confirm it. CBP’s official liquidation notices are posted on cbp.gov, and that electronic posting is the legal evidence of liquidation.3eCFR. 19 CFR 159.9 – Notice of Liquidation and Date of Liquidation for Formal Entries Any message that comes through the Automated Commercial Environment or by other means is a courtesy notice with no legal weight. Protest deadlines still run from the date CBP posts, so watching the official posting is what matters.
When the Clock Can Be Extended
The one-year deadline isn’t always the real deadline. CBP may extend liquidation in one-year increments when it doesn’t yet have the information needed to properly classify or appraise the goods, or when the importer asks for more time in writing and shows good cause.4eCFR. 19 CFR 159.12 – Extension of Time for Liquidation
Extensions cap out. Each one adds up to a year, and total extensions can’t exceed three years beyond the initial one-year period. The outer limit is four years from the date of entry.1Office of the Law Revision Counsel. 19 USC 1504 – Limitation on Liquidation If the entry still hasn’t been liquidated at that four-year mark, it deems out at the declared rate, the same way it would at one year with no extension in place.
CBP has to notify both the importer and the surety when it grants an extension. Notice is posted on cbp.gov, with courtesy notification available through ACE.4eCFR. 19 CFR 159.12 – Extension of Time for Liquidation Each extension pushes back the day you’ll know your final duty bill, so tracking them matters.
When the Clock Is Suspended Instead
A suspension is a different creature from an extension. Extensions are discretionary calls by CBP. Suspensions are compelled by statute or court order. The most common trigger is an antidumping or countervailing duty review at the Department of Commerce: while Commerce is working out final duty rates on a particular product from a particular country, liquidation of affected entries is suspended by law.
Suspensions have no four-year outer limit. They run as long as the underlying statute or court order requires, which in trade remedy cases can be well beyond four years. Once the suspension lifts, CBP has six months to liquidate. If it doesn’t liquidate within that six-month window, the entry is deemed liquidated at the importer’s originally declared rate.5Office of the Law Revision Counsel. 19 USC 1504 – Limitation on Liquidation Importers with entries tied up in antidumping proceedings need to watch for the removal notice and count six months from there.
CBP’s 90-Day Reliquidation Window
Even a completed liquidation isn’t quite final on the day it posts. Under 19 USC 1501, CBP can voluntarily reliquidate an entry within 90 days of the original liquidation date, whether or not the importer has already filed a protest.6Office of the Law Revision Counsel. 19 U.S. Code 1501 – Voluntary Reliquidations by U.S. Customs and Border Protection CBP might reliquidate because it caught a clerical error, received new information, or simply concluded the original assessment was wrong.
That cuts both ways. A favorable liquidation isn’t truly settled for three months, and an adjusted bill can arrive if CBP finds it undercharged you. On the flip side, if CBP made a mistake against you and catches it in time, reliquidation can fix things without a formal protest.
Protesting a Liquidation
If you disagree with how CBP liquidated an entry, you can file a protest under 19 USC 1514. Protests cover classification errors, valuation disputes, misapplied trade agreement rates, and incorrect duty calculations. You have 180 days from the date of liquidation to file.7Office of the Law Revision Counsel. 19 USC 1514 – Protest Against Decisions of Customs Service
Protests go on CBP Form 19, in writing or electronically. The filing has to identify each decision being challenged, describe the merchandise, and set out the reasons with supporting documentation such as invoices, lab reports, or prior CBP rulings.8eCFR. 19 CFR Part 174 – Protests Vague or unsupported protests are easy for CBP to deny.
Accelerated Disposition
When you want a faster answer, you can request accelerated disposition. Once CBP receives the request, it has 30 days to allow or deny the protest. If CBP doesn’t act in that window, the protest is deemed denied, and you can move straight to court.9eCFR. 19 CFR 174.22 – Accelerated Disposition of Protest It’s a useful tool when you think CBP is unlikely to reverse itself and you’d rather push the fight to litigation.
Going to the Court of International Trade
If CBP denies your protest, you can file a civil action in the U.S. Court of International Trade within 180 days of the denial.10Office of the Law Revision Counsel. 28 U.S. Code 2636 – Time for Commencement of Action The CIT conducts its own independent review rather than deferring to CBP, which gives importers a real shot at reversing an unfavorable decision. Miss the 180 days and the claim is barred.