Commodity Codes Explained: How to Classify Your Goods Correctly

What Is a Commodity Code?

A commodity code is the number that identifies exactly what a product is for customs purposes. Every item crossing the UK border needs one on its customs declaration, and it is what determines the duty rate, VAT treatment, and any licences or restrictions that apply to the shipment.

How the Code Is Structured

UK commodity codes run to ten digits. The first six are the Harmonized System (HS) number used internationally, the next two narrow it down under the UK’s own tariff schedule, and the final two are used for specific measures such as import licensing. Getting any part of that sequence wrong changes the duty rate that applies, sometimes significantly.

Why Classification Matters

The commodity code drives the duty rate, whether the goods need an import licence, whether preferential tariff rates under a trade agreement apply, and what data has to be reported for trade statistics. Misclassify a product and you either overpay duty on every shipment, or risk a customs review that finds you have underpaid, with penalties and interest to follow.

Common Classification Mistakes

Relying on a supplier’s invoice description, rather than the product’s actual composition and function, is the most frequent error. A generic description can point to entirely the wrong chapter of the tariff. Assuming a code stays right forever is another: tariff schedules are updated periodically, and a code that was accurate two years ago may no longer be. Treating similar products as identical is a third, since small differences in material, use, or packaging can put otherwise similar goods in different tariff headings altogether.

How GEIM Helps With Goods Classification

We classify goods against the current UK tariff before they ship, not after, so the commodity code on your declaration is right first time and stays consistent across repeat shipments. Visit our Goods Classification page for more on the service, or get in touch if you are unsure how a product should be classified.