Customs value is the number a customs authority uses, together with a tariff code, to calculate duty owed on imported goods. Under the transaction value method, the most commonly used approach worldwide, this starts with the price paid or payable and then requires several additions: packing costs, selling commissions, royalties, and assists, items or services the buyer provides to the manufacturer free of charge or at a reduced cost. Assists in particular are the single most commonly missed addition, and getting them wrong has led to penalties running into the millions.
What actually belongs in customs value, beyond the invoice price
The transaction value method starts with the price actually paid or payable for the goods, then requires the importer to add anything not already reflected in that price.
- Packing costs the buyer pays for, including containers, labor and materials used to prepare the goods for shipment.
- Selling commissions paid to the seller’s agent, distinct from buying commissions paid to the buyer’s own agent, which are generally excluded.
- Royalties and license fees the buyer must pay as a condition of the sale, whether paid to the seller or a third party, as defined in 19 CFR 152.103.
- Assists, covered in detail below, since this is where most valuation errors actually happen.
Assists: the customs value addition importers miss most often
An assist is anything the buyer supplies to the manufacturer, directly or indirectly, free of charge or at reduced cost, for use in making the imported goods. It is not limited to physical materials.
- Materials and components the buyer provides, such as fabric, chemicals, or parts incorporated into the finished product.
- Tools, dies and molds the buyer supplies or pays for, used specifically to produce the imported goods.
- Engineering, design and technical support performed outside the country of import, even when no physical item changes hands, which regulators have confirmed counts as a dutiable assist in real rulings.
Missing an assist is not a minor paperwork oversight in the customs value calculation. One documented enforcement case resulted in a settlement of 7.7 million dollars over assist valuation alone, which is a useful reminder that this is treated as a real compliance failure, not a technicality.
Related party transactions and customs value: extra scrutiny applies
When the buyer and seller are related companies, the transaction value cannot simply be accepted at face value, since the relationship could have influenced the price.
- The circumstances of sale test, outlined in UK customs valuation guidance, looks for evidence that the price was set the same way it would have been between unrelated parties.
- The test values approach compares the declared price against values accepted for identical or similar goods sold to unrelated buyers around the same time.
- Transfer pricing documentation prepared for tax purposes can support a customs valuation position, but it is not automatically accepted just because it satisfies a different regulator.
The first sale rule: lowering customs value the right way
In some jurisdictions, when goods pass through a middleman before reaching the importer, the earlier factory sale price can be used instead of the higher price the middleman charged, provided the sale was a genuine, arm’s length transaction destined for the importing country.
The burden of proof sits with the importer, and the documentation, invoices, contracts and evidence of the sale chain, has to be available and consistent. This is often a genuine duty saving opportunity that gets left on the table simply because the supporting paperwork was never assembled properly.
Where document speed genuinely matters for a customs value dispute
Most customs valuation work happens well before a shipment moves. The moments that turn urgent share a common pattern.
- A customs authority questions a declared value and requests supporting documentation, such as an assist cost breakdown or a royalty agreement, within a set window.
- A related party shipment is held pending evidence that the price was not influenced by the relationship, and the required test value documentation is not yet assembled.
- A first sale claim is challenged, requiring the original factory invoice and contract to be produced quickly to defend the lower declared value.
In each case, the shipment or the refund claim can sit unresolved while the right customs value paperwork is located and delivered, which is exactly the kind of task an onboard courier is built to shorten.
How OBC ONE supports an urgent customs value document run
A typical mission runs through six steps with OBC ONE, most of which overlap to save time.
- Brief and quote. You share the document customs has requested, its origin, the customs office involved and the deadline. OBC ONE returns an all-in quote in under 15 minutes.
- Courier assignment. A vetted courier near the origin of the document is dispatched immediately.
- Secure pickup. The invoice, contract, or cost breakdown is collected directly from the party holding it.
- Personal custody in transit. The courier carries the item in the cabin, staying with it through every connection.
- Direct delivery. Handover happens at the customs office or the broker managing the response.
- Proof of delivery. Timestamped confirmation for the file.
Why freight forwarders route these missions through OBC ONE
Choosing the right partner for an urgent customs value document starts with the business model. Many specialty couriers sell directly to shippers, which puts them in competition with the forwarders who might otherwise use them. OBC ONE is built the opposite way: we work exclusively for and with freight forwarders and time-critical desks. We never approach your clients directly and never compete with you.
That partner model is backed by real operator experience. OBC ONE was founded by an onboard courier who personally flew roughly three million kilometers over six years, so the network understands what a genuine valuation deadline requires. Forwarders use us because we deliver:
- An all-in quote in under 15 minutes, 24/7/365.
- 1,500+ vetted couriers positioned around major hubs worldwide.
- True door to door coverage, with import and export customs clearance and Importer of Record service in most markets.
- IATA certified dangerous goods capability for shipments that require it.
- One specialty, onboard courier and hand carry for time-critical missions, done at the highest standard.
How to choose a partner for an urgent customs value document
- Real familiarity with how customs authorities request valuation evidence, not just general freight knowledge.
- Fast, transparent quoting, ideally with a named dispatcher accountable for the mission.
- Direct delivery to the specific customs office or broker involved, not just address level delivery.
- Documented dangerous goods competence, where relevant to the specific shipment.
- A forwarder-only model, if you are a forwarder, so your customs value delivery partner never becomes a competitor for your clients.
Frequently asked questions
What is customs value?
Customs value is the number a customs authority uses, together with a tariff code, to calculate duty owed on imported goods. Under the transaction value method, it starts with the price paid or payable, plus required additions such as packing, commissions, royalties, and assists.
What is an assist in customs valuation?
An assist is anything the buyer supplies to the manufacturer, directly or indirectly, free of charge or at reduced cost, for use in producing the imported goods. This includes materials, tools and molds, and engineering or design work performed outside the country of import.
Why do related party transactions get extra scrutiny?
When the buyer and seller are related, the price may have been influenced by that relationship, so the importer has to show the price was set as if the parties were unrelated, either through the circumstances of sale test or by comparing test values.
What is the first sale rule?
In some jurisdictions, when goods pass through a middleman, the earlier factory sale price can be used for customs value instead of the higher price the middleman charged, provided the earlier sale was genuine, arm’s length, and destined for the importing country.
Why does document speed matter in a valuation dispute?
When customs questions a declared value, requests supporting documentation, or holds a related party shipment pending evidence, the shipment or claim can sit unresolved until the right paperwork is located and delivered.
Do you sell directly to shippers or buyers?
No. OBC ONE works exclusively with and for freight forwarders and time-critical desks. We act as a white label partner and never approach our clients’ customers directly.
Get a valuation document moving in 15 minutes
If you are a freight forwarder facing a customs value question against a deadline, OBC ONE is your specialist hand carry partner, 24/7, worldwide and never a competitor. Contact our team for an all-in quote in under 15 minutes, or explore more time-critical logistics insights.
