Importer’s Knowledge: How to Claim Preferential Duty Rates

Claiming reduced or zero duty under a Free Trade Agreement can deliver significant cost savings. However, many importers rely entirely on suppliers for origin documentation, which is not always available or reliable.

Importer’s Knowledge is an alternative approach that allows importers to claim preferential duty based on their own records — but it comes with increased responsibility.

What is Importer’s Knowledge?

Importer’s Knowledge is a customs mechanism that allows an importer to claim preferential duty rates without a supplier’s formal Statement of Origin, provided sufficient evidence is held to prove the goods meet the relevant rules of origin.

This gives importers greater control over duty claims, but also places full responsibility on them to demonstrate compliance if challenged.

When is it used?

Importer’s Knowledge is typically used when:

• A supplier cannot provide a valid Statement of Origin

• The importer has detailed knowledge of the supply chain

• There is sufficient documentation to support origin rules

It is commonly applied in structured supply chains where production and sourcing data is accessible.

What evidence is required?

To support an Importer’s Knowledge claim, importers must retain clear and auditable records, which may include:

• Correct commodity classification of the finished goods

• Details of where and how the goods were produced

• Information on non-originating materials used in production

• Evidence of sufficient processing or substantial transformation

• Supporting commercial and production documentation
  

The level of detail required will depend on the specific Free Trade Agreement and rules of origin applied.

What are the risks?

While Importer’s Knowledge offers flexibility, it also introduces compliance risk:

• Misinterpreting origin rules

• Relying on incomplete or unverified supplier information

• Failing to maintain sufficient supporting documentation
  

If a claim cannot be substantiated during an audit, this may result in duty reassessment, backdated charges, and potential penalties.

Alternative approach

Where sufficient evidence is not available, importers may instead rely on a supplier-issued Statement of Origin, where the exporter takes responsibility for the origin declaration.

Why it matters

Importer’s Knowledge can provide greater control and potential cost savings, particularly in complex supply chains. However, it should only be used where robust evidence is available and records are maintained in a format suitable for audit.

Understanding the requirements in advance helps reduce risk and avoid post-clearance issues.

If you are unsure whether this procedure applies to your shipments, our customs team can review requirements in advance of import.

GCL: customs team HMRC: Proving originating status and claiming a reduced rate of Customs Duty for trade between the UK and EU Disclaimer: This article provides general guidance only and reflects UK customs procedures at the time of publication. Customs regulations and tariff provisions may change and can vary depending on individual circumstances.

Importers and exporters remain responsible for ensuring declarations are accurate and compliant with HMRC requirements. Where necessary, reference should be made to the UK Trade Tariff or professional advice obtained before making customs decisions.