Customs authorities do not query entries at random. They query entries that look inconsistent — against your own history, against the commodity norm, or against the accompanying documents. If your query rate is sitting above two percent, something in your data is generating that signal repeatedly.
Cause one: classification drift
The same product gets classified under two different codes because two different people filed it. Authorities notice, because their systems compare your entries to each other before they compare them to anyone else’s.
Fix it by maintaining a product master with a single ruling per SKU, reviewed when the product changes and not before.
Cause two: valuation that does not reconcile
The declared value does not match the commercial invoice, or the invoice does not include assists, royalties or freight on the terms the incoterm requires. Each of those is a legitimate query, and each is avoidable with a valuation methodology agreed once and applied consistently.
Cause three: origin claimed without the evidence
Preference claims under a free-trade agreement are the single most audited part of an entry. Claiming preference is worth real money; claiming it without a supplier declaration on file is worth a penalty.
Keep the declarations current, and only claim where you can produce the paperwork within the audit window.
Cause four: filing after arrival
An entry filed when the cargo has already landed gives the authority no reason to prioritise it and every reason to inspect it. Filing at booking gives clearance the whole transit to happen in parallel.
Treat a query as a defect
The teams with the lowest query rates share one habit: every query gets a root cause, and the root cause gets fixed in the master data. Not the entry — the master data. Do that for six months and the rate falls to well under one percent and stays there.