Liquidation is the moment CBP closes the books on an entry: the final classification, value, and duty are fixed, and the correction tools that worked last month stop working. Most entries liquidate about a year after entry, but that date moves. Extensions and suspensions are routine, and an importer who is not tracking which entries have liquidated, and which are still open, is guessing about its own exposure.
What liquidation settles
Liquidation is CBP's final computation of duties on an entry summary. Until it happens, the entered figures are provisional: a post summary correction can still amend them. After it, the figures are final unless a protest is filed within 180 days under 19 USC 1514.
The notice posts in ACE and, for many importers, that is the only place it posts. A broker who files the entry does not always flag liquidation to the importer, which is why entries quietly liquidate while a classification question is still being debated internally.
Why entries get extended
CBP can extend liquidation for up to three additional years, usually because it needs more information, a ruling is pending, or the entry is tied to an antidumping or countervailing duty review where the final rate is not yet known. Importers can also request an extension when they need time to substantiate a claim.
Suspension is different from extension. Entries subject to AD/CVD administrative reviews are often suspended, sometimes for years, until Commerce issues final results. The duty deposit paid at entry is not the final duty on a suspended entry, and treating it as final understates the liability sitting on the books.
Reading the clock correctly
The practical job is a liquidation report, pulled from ACE on a set cadence, listing entries by status: entered, liquidated, extended, suspended. Any entry approaching liquidation with an open question on it, a value adjustment, a possible preference claim, a classification doubt, needs a decision before the date, not after it.
After liquidation the protest window is 180 days and it does not reopen. Miss it and the entry stands as liquidated even if the classification was wrong and the overpayment is provable. Confirm liquidation status entry by entry with a licensed customs broker before assuming a correction route is still open.
The file that survives liquidation
A liquidated entry can still be audited. CBP has five years from the date of entry, in most cases, to pursue a material false statement, and the entry packet is the defence. Invoice, packing list, payment proof, classification worksheet, and any ruling relied on belong together, retrievable by entry number.
Importers who keep that packet complete rarely fear liquidation. The date becomes administrative. Importers who cannot reconstruct why a code was chosen experience liquidation as the start of a problem, not the end of one.
Keep reading
Related guides on this site: Post Summary Corrections: Fixing an Entry After the Goods Have Cleared When CBP Says Your Bond Is Not Sufficient: What Changed and What To Do Answers for teams shipping Shopify orders across borders.
Frequently asked questions
What does it mean when an entry liquidates?
CBP has made its final determination of classification, value, and duty for that entry. The figures are fixed unless a timely protest is filed within 180 days of the liquidation date.
How long after entry does liquidation usually happen?
Roughly a year is common, but CBP can extend liquidation and entries under antidumping or countervailing review are often suspended much longer. The ACE record for the specific entry is the only reliable source.
Can I still fix an error after liquidation?
The post summary correction route closes at liquidation. After that the tools are a protest for matters covered by 19 USC 1514, or a prior disclosure where a material false statement is involved.