Most entry errors are fixable, but the fix depends on timing. Before liquidation, a post-summary correction can amend most fields on the entry summary. After liquidation, the remedy is a protest filed within 180 days. The mistake importers make is treating every error the same way, then discovering the window for the easy fix closed while they were deciding.
Three different fixes for three different stages
Customs entries move through stages, and each stage has its own correction tool. While the entry is still open, the broker can amend it directly with CBP. Once the entry summary is filed, changes go through a post-summary correction, which covers classification, value, origin, and quantity in most cases.
After CBP liquidates the entry, the file is effectively closed and the correction becomes a protest, a formal legal filing with a hard 180-day deadline from liquidation. Miss that deadline and even an obvious overpayment is usually gone for good.
The errors worth correcting first
Not every error matters equally. Classification errors that change the duty rate are the top priority, because they compound across every repeat shipment filed the same wrong way. Value errors matter when they are systematic, for example a freight amount double counted on every entry from one supplier.
Origin errors deserve special urgency when they affect Section 301 or other additional duties, since the rate gap can be 25 points rather than two. Rank your backlog by duty impact per entry multiplied by how many entries share the error.
What documentation a correction needs
CBP does not correct entries on your say-so. A classification correction needs the product evidence behind the new code: spec sheets, composition, photos, and ideally a ruling or a written classification analysis. A value correction needs the commercial documents showing the correct price actually paid.
Keep the correction packet self-contained. Reviewers should be able to see the original entry, the field being changed, the new value, and the document that proves it, without asking you a follow-up question. Packets that need a second round of questions sit in queues for months.
Fixing the process, not just the entry
A correction that does not change the underlying data will recur on the next shipment. If the error came from the broker instructions, update the instruction sheet. If it came from supplier invoices with ambiguous product descriptions, fix the invoice template at the source.
Build a simple pre-entry check for repeat SKUs: code, value basis, and origin confirmed once and locked, with any change triggering a review. Most post-entry work is really master-data work that nobody owned.
When to file a prior disclosure instead
Sometimes a correction reveals a pattern: the same undervaluation or misclassification ran for two years. At that point the question is bigger than one entry. A voluntary prior disclosure caps penalty exposure when you tell CBP about the error before they find it.
Get counsel involved before filing anything in that situation. The line between a routine correction and a disclosure is fact-specific, and the filing itself creates the record. The cost of advice is small next to a penalty case built on entries you already know are wrong.
Frequently asked questions
How long do I have to correct a customs entry?
Most fields can be corrected by post-summary correction until liquidation. After liquidation you generally have 180 days to file a protest. Check liquidation status entry by entry, because entries from the same week can liquidate on different dates.
Can I correct an entry if it means CBP owes me money?
Yes. Corrections and protests cover overpayments as well as underpayments. Refund claims for duty paid on a wrong classification are routine, provided the filing is timely and the new classification is documented.
Does filing a correction increase my audit risk?
A well documented correction is a normal part of trade compliance and brokers file them constantly. A pattern of identical errors left uncorrected is the bigger risk, because it suggests the importer knew and did nothing.
Who actually files the correction, me or my broker?
Your broker usually files it, but the importer of record is legally responsible for its accuracy. Review the correction before filing and keep the supporting documents in your own records, not only in the broker portal.