Most tariff-refund denials, drawback disallowances, and refund-advance declines trace back to nine repeatable mistakes. None are about the merit of the underlying claim. All of them are preventable.
If you've been turned down, one of the nine patterns below almost certainly explains it. Most are fixable on refile — if the statutory window is still open.
Missed filing windows. No amount of merit reopens a closed clock.
Weak documentation. CBP can only rule on what's in the packet.
No single owner. Tariff exposure spans compliance, finance, legal, and ops.
The importer had a legitimate refund claim, but the 180-day post-liquidation protest window (or 300-day PSC window) expired before filing. CBP has no discretion here — the claim is legally final regardless of merit.
Nobody owns tariff exposure end-to-end. Finance sees the duty as a paid cost. The broker sees the entry as complete. Legal is not looped in. The clock runs quietly.
Run a rolling entry audit on the last 24 months of imports. Every entry inside a live protest window is a recoverable option; every entry outside it is not. Set a monthly review, not an annual one.
The protest asks for a new HTS classification but doesn't ground it in chapter notes, prior CBP rulings, or Court of International Trade case law. CBP denies for insufficient legal basis.
The importer or their broker wrote the argument without customs counsel. The chosen HTS is defensible commercially but not defensible under the General Rules of Interpretation CBP is bound to apply.
Every reclassification protest should cite at least one CBP ruling (search rulings.cbp.gov) or CIT case supporting the position. If none exist, request a binding ruling before filing rather than after being denied.
An exclusion or refund depends on country of origin, but the supporting documents (mill certs, factory affidavits, production records) don't clearly show substantial transformation in the claimed country.
Assembly and light processing don't automatically confer origin. CBP applies the substantial transformation test, and boilerplate supplier certificates rarely satisfy it.
Get factory-level production records, not just certificates of origin. Where transformation is marginal, obtain a binding ruling before importing rather than defending origin at protest.
The protest lists entry numbers that don't correspond to the entries containing the duty in question, or bundles pre- and post-liquidation entries under one filing.
The broker's entry log and the importer's AP system use different reference numbers. Reconciliation is manual and often skipped.
Reconcile broker-side entry summaries against ACE (Automated Commercial Environment) data before drafting the protest. File one protest per liquidation date, not one omnibus filing.
The drawback claim can't demonstrate a clean SKU-level (or substituted-commodity) link between the imported input and the exported finished good within the 5-year window. CBP disallows the claim.
Import records live in the customs broker's system, export records live in ERP or 3PL data, and BOMs live in engineering. Nobody has stitched them together.
Use drawback software (or a specialist) to build the audit trail before filing. Under TFTEA (2018), substitution rules are far more permissive than most importers realize — an old refusal to file may no longer apply.
A financing partner declines because they can't independently verify the entries, the filing, or the expected refund amount. They aren't declining the claim — they're declining visibility.
The importer's broker won't share ACE access with a third party, or the filing was made through a legal firm that treats the docket as confidential.
Grant the underwriter read-only ACE access for the entries in question, or provide a full copy of the protest packet under NDA. Underwriting improves dramatically with entry-level detail.
A First Sale for Export valuation gets challenged at audit and reversed, generating back duty, interest, and penalties on top of the original tariff.
The importer took the middleman's word that a legitimate first sale existed, without factory invoices, arm's-length pricing evidence, or documentation showing US-bound intent at the time of first sale.
Never rely on middleman documentation. Require factory-issued invoices, transaction records between factory and middleman, and evidence (purchase orders, correspondence) that the goods were destined for the US at the moment of first sale.
The FTZ Board or CBP kicks back the activation application for insufficient inventory controls, unclear operational scope, or a facility that doesn't meet security standards.
The applicant assumed FTZ is a paperwork exercise. It isn't — it's an operational designation with recurring compliance obligations.
Before applying, deploy WMS software that meets CBP audit standards, document your inventory control procedures, and pre-inspect the facility. Most successful activations are handled by consultants who do this weekly.
The refund claim says one thing about the product; a prior entry summary, a supplier declaration, or an SEC filing says another. CBP flags the inconsistency and denies.
Nobody harmonizes tariff positions across compliance, trade, finance, and investor relations. Each function writes what makes its own filing easier.
Before filing a material refund claim, sweep for public and CBP-visible statements about the same product. Reconcile or explain the difference inside the protest before CBP finds it.
Send us the denial letter and the underlying entry numbers. We'll tell you in one review whether it's a refile candidate, a documentation fix, or truly final — and where to look for other entries that would have been denied for the same reason.