Customs Value vs Invoice Price and Landed Cost

The invoice is the starting point, not always the customs value

Most importers price a deal from the supplier invoice, and it is a reasonable place to begin — but a declaration is not a copy of an invoice. Under the WTO valuation framework the customs value is normally the transaction value: the price actually paid or payable for the goods, plus specific adjustments the agreement allows. So the invoice figure can move before duty is applied, even when nobody has done anything wrong.

The WTO's technical information on customs valuation sets out the framework its members have agreed. Two things matter for costing. First, customs valuation exists to establish the value used for ad valorem duty — not to describe your commercial cost. Second, the adjustments are a defined list, applied on top of the price paid or payable, and they stop at the border.

Invoice price, customs value and landed cost side by side

If the CIF side of this is what you need, the companion guide on what CIF includes and where landed cost takes over walks through the formulas. This note is about the step before that: how the number customs works from comes into existence.

Transaction value and the adjustments that can apply

Transaction value is the price actually paid or payable for the goods when sold for export to the country of importation, adjusted in accordance with Article 8 of the agreement. Adjustments that may apply include:

• commissions and brokerage, except buying commissions;
• the cost of containers and of packing, where treated as part of the goods;
• “assists” — materials, components, tools, dies, moulds, engineering or design work you supply to the seller free or at reduced cost;
• royalties and licence fees, where they relate to the goods and are a condition of sale;
• certain proceeds of a later resale that accrue to the seller;
• transport, insurance and related loading or handling charges, where the importing member values on a CIF-type basis rather than an FOB one.

Note what is not on that list: your broker's fee, terminal handling at destination, inland trucking, warehousing, financing and your own selling costs. Those are real money, but they sit after the border and outside the WTO transaction-value adjustments. They belong in your landed cost, not your declared value.

Two qualifications matter. National law and the destination authority control the actual declaration — the agreement sets a framework, and countries implement it with their own rules, forms, currency-conversion practice and evidence requirements. And where buyer and seller are related, or the price is subject to conditions that cannot be valued, the authority may not accept transaction value at all.

A practical example of one authority's guidance

As a clearly labelled illustration of how a single customs authority publishes this — not as global law and not as guidance for anywhere else — the UK's HMRC maintains a collection titled working out the customs value of your imported goods. It carries separate notices for each valuation method, and for delivery costs, the value for import VAT, exchange rates, commissions, royalties and licence fees, and applying for an advance valuation ruling. UK-specific treatment does not transfer to other countries, but the shape of the guidance does: expect your own authority to publish the same categories, and expect it to be the authority that settles the question.

The six valuation methods, in sequence

When transaction value is unavailable or is not accepted, the agreement provides five further methods, applied in order rather than picked freely:

1. Transaction value — price paid or payable plus applicable adjustments.
2. Identical goods — the transaction value of identical goods sold for export to the same country.
3. Similar goods — the same idea, using goods that are similar rather than identical.
4. Deductive value — worked back from the resale price in the importing country, deducting the elements that were added after import.
5. Computed value — built up from production cost plus profit and general expenses.
6. Fall-back — a reasonable means consistent with the agreement's principles, where none of the above can be applied.

You do not need to master these to cost a shipment, and this is not legal advice. What matters commercially is that if your declaration is queried, the resulting value may be higher than your invoice, and your duty, tax and margin all move with it. Costing with a single unquestioned invoice figure hides that risk.

Worked illustrative example

All figures and rates below are illustrative only. Substitute the rates, bases and fees your destination actually applies.

Invoice goods value                        40,000.00
International freight                       3,200.00
Marine insurance                              260.00
Packing / container cost (Article 8 type)     540.00
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Illustrative customs value (CIF basis)     44,000.00

Ad valorem duty        @ 8% of value        3,520.00
Trade levy           @ 0.5% of value          220.00
Tax base = 44,000 + 3,520 + 220            47,740.00
Import VAT / GST      @ 15% of base         7,161.00
Clearing, terminal, documentation           1,150.00
Inland delivery                               480.00
------------------------------------------------------
Total landed cost                          56,531.00

The customs value is 44,000 — the invoice price of 40,000, plus freight and insurance because this illustrative country values on a CIF basis, plus a packing adjustment of the Article 8 type. Duty is charged on that 44,000, not on the 40,000 invoice.

The landed cost is 56,531, roughly 28% above the customs value and 41% above the invoice. The gap is entirely made up of things customs valuation was never trying to measure: the duty itself, the levy, the import tax, and the cost of moving goods from the terminal to your shelves. Note also how the duty compounds — it enters the tax base, so an extra percentage point of duty costs more than a percentage point of cash. The guide on how the import VAT or GST base is assembled shows why.

And because duty is ad valorem, the rate depends on classification. A defensible tariff line is as important as a defensible value — see what an HS code does and does not tell you about duty.

Documents to gather before you cost a shipment

• Commercial invoice and the underlying contract or purchase order.
• Freight invoice or quotation, and the insurance certificate or premium.
• The Incoterm agreed, so you know which costs are already inside the price.
• Packing and container costs, separately identified.
• Any commissions or brokerage, and whether each is a buying commission.
• Details of any assists: tooling, moulds, materials, design or engineering you supplied.
• Royalty or licence agreements relating to the goods.
• Whether you and the seller are related parties.
• Origin evidence and any preferential-origin claim.
• Tariff classification, with the source you took it from and the date you checked.
• The destination's valuation rules — FOB or CIF basis, currency conversion practice.
• Applicable duty, excise, levy and VAT or GST rules, with their bases.
• Post-border quotes: clearing, terminal handling, storage, inland delivery, bank charges.

With those in hand, the arithmetic is mechanical. You can run the whole sequence — customs value, duty, levies, tax base, clearing and cost per unit — in the free landed cost calculator, and the step-by-step landed cost method explains the order the charges arrive in.

If the shipment holds several products, the valuation and the allocation questions arrive together: each line needs its own value and classification, and shared costs need splitting on a basis you can defend. TrueCost Pro keeps multi-product shipments as saved records, allocates shared costs across lines and reconciles your estimate against the actual invoices once they arrive.

When to bring in a broker or the authority

Get professional input, rather than a spreadsheet, when:

• you and the supplier are related parties;
• royalties, licence fees or resale proceeds are part of the arrangement;
• you supply tooling, materials or design work to the seller;
• the goods arrive on consignment, free of charge, or as samples with no sale price;
• the transaction involves a chain of sales, or a price adjusted after import;
• classification is genuinely arguable and the duty difference is material.

Many authorities also issue advance valuation rulings: a written decision on how a specific transaction should be valued, obtained before you import. Where the duty at stake is large or the structure is unusual, a ruling converts an assumption into a fact you can cost from. A licensed customs broker in the destination country is the right person to ask what is available.

The takeaway

The invoice tells you what you agreed to pay. The customs value tells you what duty will be charged on, and it is the destination's decision, not yours. The landed cost tells you whether the shipment is worth doing. Cost from the third number, declare the second honestly with evidence behind every adjustment, and treat the first as an input rather than an answer.

All figures and rates in this note are illustrative estimates. This article explains general method and links to primary sources; it is not customs, tax or legal advice, and it is not an official interpretation of the WTO agreement or of any country's law. Confirm valuation treatment, classification, rates and tax bases with the destination customs authority or a licensed clearing agent before you commit to a purchase or a price. Our calculation methodology and editorial policy explains how we produce and review these figures, and how to tell us about a correction.