The moment an old-entry review turns up a problem, the most common reaction is: “that shipment cleared two years ago — leave it alone.” The instinct is understandable, and in the US customs system it is the most expensive choice available. CBP built an explicit exit called Prior Disclosure: tell customs yourself, before an investigation opens, and the penalty gap versus being caught is not a discount — it is a different order of magnitude.
Why speaking first is worth money
When CBP pursues filing errors, it weighs not only what went wrong but how you faced it. Same classification error, same underpaid duty:
- Caught by CBP: penalties computed by tier — negligence, gross negligence, fraud — with the audit likely widening: one error found, five years of entries opened
- Voluntarily disclosed: under a qualifying disclosure, the penalty ceiling drops to a completely different level; in most cases the practical burden approaches duty plus interest
That is not customs being kind — it is mechanism design. CBP’s audit capacity is finite; paying importers to self-correct is cheaper than door-to-door review, and the discount for confession is the price of that incentive.
What can be disclosed
Prior Disclosure covers the core declaration fields — the same territory reasonable care governs:
- Classification: wrong HTS code, under-reported rate
- Valuation: dutiable value missing assists, royalties or other statutory additions; related-party prices set low
- Origin: wrong origin declared, or additional duties (Section 301 and similar) unpaid
- Other misstatements: quantity, specifications, misused duty exemptions
A common misconception: only errors that shorted duty need disclosure. No — a false statement is itself the violation; even where the recomputed duty shows no shortfall, the record still needs correcting.
The procedure: written, scoped, tendered
Prior Disclosure is not an apologetic phone call — it has structure:
- A written submission to CBP, identifying itself as a prior disclosure
- The nature and scope of the error: which field, which entries, what period, what the correct declaration should have been
- Tender of the shorted duties alongside
- A perfection window: where full line-items and amounts cannot be computed immediately, disclose and define the scope first, then perfect the details and payment within the deadline (extendable) — practical, because reconstructing five years of entry data is rarely a one-week job
The responsible party is whoever holds the Importer of Record name; brokers assist, but the disclosure is the IOR’s own act.
The window: a door that is closing
The premise is that CBP has not yet opened an investigation (or you are unaware of one). The door does not stay open: a CF28 inquiry or notice of review means the space is shrinking, because once a case opens, the same issue no longer counts as voluntary. So when a self-audit surfaces a systemic error, evaluation must be fast — scope, duty gap, disclose or not is a decision for the coming weeks, not next year’s budget meeting. Find it yourself and you hold the card; let customs find it first and the card is gone.
Where SKYCARGO fits
SKYCARGO INC handles the front half: assembling the entry records, bounding the error, computing the duty gap — so you walk into the decision with complete data. Whether to disclose, how to draft, negotiation strategy — that is legal work for customs attorneys. B2B shipments, talk to us. (Personal parcels: Shiptw.)
Prior Disclosure requirements and effects follow current CBP law. Reference only; consult compliance counsel or customs attorneys.



