Customs valuation plays a central role in how multinational groups structure cross border transactions and manage regulatory exposure across jurisdictions with differing tax and tariff regimes.

In a globalised economy, multinational enterprises (MNEs) and corporations may have branches, affiliate companies, and distribution hubs across multiple regions. They may also have fragmented ownership and control, for example, where a majority shareholder exercises control over a group, but regional subsidiaries have different shareholders or operate under disparate brand names.

In other circumstances, a holding company as the ultimate shareholder will separate their cashflow-generating assets in separate companies within the group, whereby the companies may benefit from paying for the intercompany lease of equipment, the licensing of intellectual property rights, finance, real estate, and cross-border purchase of goods from their manufacturing facilities.

The controlling parent organisation may seek for profits to accrue in a particular region, for multiple reasons including but not limited to the corporation tax rate, and distribution of shareholders’ dividends.

In circumstances where a prior relationship may impact the pricing of the goods for customs purposes, or where no sale is occurring but a cross-border transfer of goods takes place between manufacturing and distribution hubs, the customs authorities will seek to ensure that the valuation for customs purposes reflects the market value of the goods.

The World Trade Organization (WTO) has developed a set of guidelines for customs valuation that are incorporated into the national legislation of its members, including in the UK. The harmonised application of customs valuation rules is intended to standardise the application of customs valuation policy, whereby all 166 member states of the WTO are required to acknowledge customs valuation policy in domestic legislation.

The Agreement on Implementation of Article VII of the General Agreement on Tariffs and Trade 1994, referred to as the World Trade Organization (WTO) Valuation Agreement, is a legal document that provides for sequential valuation methods within Part I, Rules on Customs Valuation, Article 1 to Article 7, and other relevant information for determining customs valuation within Part I, Article 8 to Article 17. Annex I provides interpretative notes on the use of the methodology and practical examples.

The remaining pages in this content hub will set out the six types of customs valuation below, and provide example use cases. When reviewing the information presented, regional adjustments may be required, for example the United Kingdom includes the cost of freight and insurance (CIF) value to the UK border within the valuation for customs purposes, whereas the United States bases the valuation on the free on board (FOB) price; the cost of the goods and delivery up until the goods have been loaded on board a vessel.

Within the United Kingdom, in 2021, HMRC (His Majesty’s Revenue and Customs) collected £2.95 billion in customs duty. Reuters has reported that the US collected $100 billion in tariff income between January and July 2025. As tariffs are generally calculated on an ad valorem basis, customs valuation is essential to taxation, and governments may impose penalties and post-clearance demands if customs valuation rules are not adhered to. Section 24 – 41 of the Finance Act 2003 (UK) provides for two types of civil penalties: 1) the civil evasion penalty and 2) the civil penalty for deliberate evasion of customs rules related to specific taxes and duties.

Best practices for internal controls and documentation

Companies should maintain an internal Customs Valuation Policy, accompanied by a due diligence checklist for logistics managers, finance and/or operations to review and sign off on the appropriate valuation method in circumstances where no sale occurs, or a sale occurs between related parties. Critical to the interpretation of the WTO Customs Valuation framework is the consecutive application of the rules. Methods 1 to 6 must be applied on a consecutive basis; only Methods 4 and 5 are interchangeable at the discretion of the importer.

Furthermore, regional variations such as whether the transaction value is based upon the CIF or FOB price, or whether the first sale or final sale for export should be considered. Whilst methodology is for the most part harmonised through the WTO agreement on customs valuation, it is also advisable to review regional variations such as the first sale rule, differentiations in the inclusion of transport and insurance related costs, and permissions related to transfer pricing. Customs authorities may conduct post clearance audits and issue post clearance demands; therefore, documented evidence of transaction value should be part of every organisation’s audit and archive procedures.

For deeper analysis of customs valuation methodologies, regional variations, and practical compliance considerations, explore the full Exporters Guide here