Expertise · Customs compliance
Customs compliance: taking back control of classification, origin and value
Three data points drive almost all of your customs exposure: the HS code, the origin and the declared value. We make them accurate, we document them, and we put you in a position to defend them under audit.
Customs compliance is almost never a pure question of law. It is a question of data and evidence: a commodity code assigned eight years ago by a forwarder who no longer exists, a preferential origin claimed without anyone being able to retrieve the supplier's declaration, a declared value that ignores royalties paid separately to the parent company. Each of these is invisible until there is an audit. Each becomes very expensive once there is one.
Our work is to make those three data points verifiable. Not to produce another report, but to leave behind documented, defensible positions owned by someone in your organisation.
Tariff classification: the most copied and least verified data point
The commodity code drives the duty rate, eligibility for preferences, the application of trade defence measures and, increasingly, the trigger for non-customs regulation — carbon border adjustment, deforestation rules, export restrictions. A classification error therefore no longer costs only a duty differential: it can create a reporting failure under an entirely separate regime.
In most industrial companies we audit, between 5% and 15% of active part numbers carry a questionable code. The causes are always the same: a supplier classification adopted without review, a catch-all heading chosen for composite articles, no update after a nomenclature change, or an existing item copied when creating a new record in the ERP.
- Classification review by product family, with written reasoning based on the GIRs, section and chapter notes and WCO classification opinions.
- Treatment of contested cases: composite articles, retail sets, parts and accessories, multi-function machines.
- Preparation and filing of Binding Tariff Information applications on high-stakes headings.
- An item-creation rule in the ERP: who classifies, on what basis, with what validation.
Origin: preferential and non-preferential are different disciplines
Non-preferential origin determines the country of origin for commercial policy measures — anti-dumping, quotas, marking. Preferential origin governs access to the reduced rate under a free trade agreement. These are two distinct legal regimes with different rules, and it is common to find a company applying one while believing it is dealing with the other.
The exposure on preferential origin is asymmetric: the benefit is immediate and visible, the burden of proof is deferred and rests entirely on the exporter. In a post-clearance verification — including one triggered by the importing country's administration years later — the absence of valid supplier's declarations is enough to collapse the preference across all affected flows.
| Topic | Question you must be able to answer | Evidence expected |
|---|---|---|
| Applicable rule | Which list rule applies to this heading under this agreement? | Dated extract of the agreement annex |
| Calculation | Is the value-added or tariff-shift rule met, item by item? | Archived, refreshed origin calculation |
| Non-originating materials | Where do they come from, at what ex-works price? | Supplier's declarations (long-term or single) |
| Exporter status | Are you a registered (REX) or approved exporter where required? | Current REX number / authorisation |
| Retention | Can you produce all of this three to five years later? | Complete and retrievable origin file |
Watch point
An expired long-term supplier's declaration does not only invalidate future shipments: it retroactively weakens every origin proof issued during the uncovered period. We regularly meet companies that track their outbound origin certificates perfectly while not tracking the supplier declarations underpinning them.
Customs valuation: what the invoice does not say
Transaction value is the starting point, not the answer. Additions — royalties and licence fees, assists, transport and insurance to the point of introduction, selling commissions — are the leading source of assessment in integrated groups, because they flow outside the commercial invoicing stream and therefore outside the customs team's field of view.
Related-party flows require specific treatment. A transfer pricing policy accepted by the tax authority is not, in itself, an acceptable customs value; and year-end retroactive adjustments raise a customs question that few organisations address explicitly.
- Mapping of ancillary financial flows: licences, recharged R&D, free-issue tooling, marketing contributions.
- Analysis of intercompany flows and articulation with transfer pricing documentation.
- Use of valuation simplification where adjustments are unknown at declaration.
- Securing corrections: when, how and to whom an adjustment is declared.
Special procedures and post-clearance audit readiness
Inward processing, customs warehousing, end-use, temporary admission and transit are cash and competitiveness levers, but they impose stock-record obligations that many companies underestimate at authorisation and discover at discharge. We work in both directions: building the authorisation file where the gain is real and documented, or establishing that it is not and sparing you a permanent administrative burden for a marginal saving.
Audit readiness is built in advance, not when the notice arrives. We run the exercise under real conditions, including the most revealing test of all: reconciling, over a full financial year, the amounts declared to customs with the accounts.
Deliverables
What you keep at the end
Documents your teams can use, not a closing presentation.
Reasoned classification matrix
One file per product family: code, rule applied, source, confidence level, and the items to settle by BTI.
Origin file
Applicable rules by agreement, archived calculations, status of supplier declarations, plan to chase the missing ones.
Valuation memorandum
The additions identified, the recommended treatment, and where relevant the correction procedure.
Flow map
Who declares what, under which procedure, with which authorisation, and where the unowned gaps are.
Written procedures
Control steps embedded in existing processes: item creation, annual review, verification of the broker's declarations.
Prioritised action plan
Three tiers: what exposes you now, what costs money every month, and what is continuous improvement.
Method
How an engagement runs
Clarify
Extract twelve months of declaration data, interview the operators, read the standing authorisations. The aim is to see flows as declared, not as described.
Prioritise
Quantify exposure by topic — duties potentially owed, fragile preferences, unmet obligations. Not everything matters equally, and we say so.
Secure
Handle the critical items: BTIs, corrections, rebuilt origin files, updated authorisations.
Equip
Procedures, control rules, training for the functions concerned, handover to a named owner. We leave; the framework stays.
Frequently asked questions
What is the difference between customs compliance and customs clearance?
Clearance is the declarative act: preparing and lodging the declaration, usually through a customs representative. Customs compliance is what makes that act defensible — the accuracy of classification, origin and value, the validity of authorisations, and the traceability of decisions. A customs representative declares what you send them; responsibility for the content remains yours, including under indirect representation. We deliberately do not provide clearance services, so that we can stay on the control side.
How far back can a post-clearance audit reach?
In the European Union, a customs debt may in principle be notified within three years of its incurrence, extendable to a minimum of five years where the debt results from an act liable to criminal prosecution. Document retention obligations follow a comparable logic. In practice you must be able to justify positions taken several years earlier, often by people who have since left — which is why written documentation matters more than institutional memory.
We already use a customs broker. Do we still need an advisor?
The two roles do not substitute for one another. A broker executes declarations from the data you supply and has neither the mandate nor generally the means to verify your nomenclature, your origin calculations or your valuation additions. Almost every assessment we see concerns data supplied by the company, not keying errors by the representative.
Do you work in Switzerland as well as the EU?
Yes, and it is often the core of the matter for our clients: groups with entities on both sides of the border are in fact managing two distinct legal regimes, with origin rules articulated by agreement, different procedures before the FOCBS and EU customs, and valuation questions specific to cross-border intercompany flows. We work both sides within a single engagement rather than treating Switzerland as an annexe.