Understanding UK Customs Clearance After Brexit
The United Kingdom’s departure from the European Union has fundamentally changed the customs landscape for UK businesses trading internationally. Where goods previously moved freely between the UK and EU member states without customs formalities, every cross-border movement now requires a customs declaration — bringing with it new documentation requirements, potential duty liabilities, and compliance obligations.
What Has Changed Since Brexit?
Since Brexit, the UK has become a third country in relation to the EU. This means all goods imported into the UK from the EU require a UK import customs declaration, all goods exported to the EU require a UK export declaration, import duties may be payable depending on the commodity and its country of origin, and Rules of Origin requirements determine whether goods qualify for preferential duty rates under the UK-EU Trade and Cooperation Agreement.
Commodity Codes
Every item imported into or exported from the UK must be classified using a commodity code — an internationally standardised numerical code that identifies the nature of the goods. The commodity code determines the applicable duty rate, any import restrictions or licensing requirements, and statistical reporting obligations. Incorrect commodity codes are one of the most common causes of customs delays and penalties.
Import Declarations
When goods arrive in the UK from overseas, a customs import declaration must be submitted to HMRC’s Customs Declaration Service (CDS). This declaration includes details of the importer, the goods, their value, their origin, and the applicable duty and VAT. The importer remains legally responsible for the accuracy of the declaration, even when submitted by a third party.
Duty and VAT
Import duty is calculated as a percentage of the customs value of the goods. Import VAT is charged at the standard rate (currently 20%) on most goods imported into the UK. Businesses registered for VAT can typically reclaim import VAT as input tax on their VAT return, provided the goods are used for business purposes.
Rules of Origin
Under the UK-EU Trade and Cooperation Agreement, goods that originate in the UK or EU may qualify for zero or reduced import duties. However, to claim this preferential treatment, the goods must meet specific Rules of Origin criteria — meaning they must be sufficiently processed or manufactured in the UK or EU.
Common Customs Clearance Mistakes to Avoid
- Incorrect or missing commodity codes — leading to delays, penalties, or duty miscalculations
- Undervaluing goods — HMRC uses transaction value as the basis for duty, and undervaluation is a serious compliance risk
- Failing to retain customs records — businesses are required to retain customs documentation for at least four years
- Overlooking Rules of Origin — claiming preferential duty rates without meeting the origin criteria can result in significant retrospective duty demands
How a Freight Forwarder Can Help
An experienced, BIFA-accredited freight forwarder with dedicated customs expertise can manage the entire customs clearance process on your behalf — from commodity classification and declaration submission to duty payment and compliance monitoring. Working with a specialist customs team reduces the risk of errors, speeds up clearance times, and ensures your business remains compliant with HMRC requirements.
FreightMeter has a specialist customs clearance team with deep expertise in post-Brexit UK customs procedures. Contact us today to discuss your customs requirements.