Customs debt liability in the UK – when a customs agent is also liable for declaration errors

A single error in a customs declaration — an incorrect commodity code, an undervalued shipment, a missing preference document — and HMRC can demand payment of duty together with interest. But who actually foots the bill: the importer or the customs agency? The answer depends on the form of representation and the nature of the working relationship. This article explains the mechanism of customs debt liability in the UK, both for importers and for businesses using the services of a customs agency.

What is customs debt in the UK?

Customs debt is the legal obligation to pay customs and tax charges (duty + import VAT) arising from the introduction of goods into the UK customs territory or from a breach of the conditions of a customs procedure.

Customs debt arises, among other circumstances, when: - Goods are released into free circulation (standard import) - A customs procedure is breached (for example, goods placed under transit went missing or failed to reach the declared destination) - The customs declaration contained incorrect data that resulted in an underpayment of duty - Goods were moved without a customs declaration

In the UK the legal basis for customs debt is the Taxation (Cross-border Trade) Act 2018 and its associated secondary legislation, and HMRC is the authority empowered to enforce the liability.

Who is the customs debtor in the UK — the concept of "debtor"

UK customs law specifies who may be obliged to pay customs debt. The importer is always the primary customs debtor — it is the importer who places the goods into circulation and who holds title to them. However, depending on the form of representation used when lodging the declaration, a customs agency may also become a debtor.

The key factor here is the form of authority granted to the customs agency.

Direct representation vs indirect representation — the fundamental difference

Direct representation

In this model the customs agency lodges the declaration in the name of and on behalf of the importer. The agency acts as an authorised representative — much like a solicitor acting on a client's behalf. Liability for customs debt rests exclusively with the importer.

Condition: the agency must clearly indicate in the CDS declaration that it is acting as a direct representative. Code "2" (direct) is entered in the "Representation" field.

Consequences for the importer: the importer bears full responsibility for the accuracy of the information supplied to the agency. If the importer provided incorrect documents or undervalued figures — it is the importer HMRC will pursue.

Consequences for the customs agency: under direct representation the agency is in principle not a customs debtor. This does not, however, mean it has no liability whatsoever — the agency may still face professional and civil liability if an error arose from its own negligence.

Indirect representation

In this model the customs agency lodges the declaration in its own name, but on behalf of the importer. The agency formally becomes a party to the customs proceedings.

Code "3" (indirect) is entered in CDS.

Consequences: under indirect representation HMRC can pursue payment of customs debt from both the importer and the customs agency — they are jointly and severally liable for the debt. HMRC may choose which of them to demand payment from.

Why do agencies choose indirect representation? In certain situations indirect representation is required (for example, when the importer does not hold a GB EORI and uses the agency's EORI instead) or is preferred by the client. Agencies must then manage the risk appropriately — including through due diligence and appropriate contractual provisions.

When can HMRC pursue the customs agency?

Even under direct representation there are situations in which a customs agency may find itself in HMRC's sights:

Undervaluation

If an agency accepted invoices with values conspicuously below market prices — without making enquiries or carrying out due diligence — HMRC may conclude that the agency "should have known" about the undervaluation. This applies particularly to goods from China and South-East Asia, where undervaluation is a common abuse.

Incorrect tariff classification

If a customs agency applied an incorrect commodity code (HS code) and as a result a lower duty rate was applied, HMRC may demand a top-up payment from the importer. The customs agency may face professional liability towards the client if the error arose from its own negligence.

False or falsified documents

If an agency accepted and lodged declarations based on documents that gave reasonable grounds for doubt as to their authenticity — HMRC may question its conduct. In extreme cases (involvement in a fraud scheme) the agency may be subject to criminal prosecution.

Breach of transit procedure

If a customs agency administered a T1 transit procedure as principal (the party primarily liable in transit) and the goods failed to reach their destination — the agency as principal is directly liable for the customs debt arising from the undischarged transit.

Due diligence — how to protect yourself and your clients

Due diligence is not merely a formality — it is real protection against liability. A customs agency operating in accordance with due diligence principles:

Verifies the identity and status of the client: - EORI number and its validity - Consistency of the company name with registration documents - History of the relationship (is the client known and reliable)

Verifies commercial documents: - Invoices are issued by genuine sellers, and values are consistent with transaction values in the market - Tariff preference documents (EUR.1, origin declaration) are authentic and correctly issued - Dangerous, regulated, or licenced goods hold the appropriate permits

Applies caution in relation to known risks: - Goods with a high undervaluation risk (electronics, textiles, footwear from China) - Sectors with a historically high incidence of customs infringements - New clients with no track record or incomplete documentation

A customs agency that can demonstrate to HMRC that it exercised proper due diligence is in a significantly stronger position when the accuracy of a declaration is challenged.

[LINK: HMRC Customs Duty guidance — gov.uk]

Practical implications for importers

If you use the services of a customs agency, you should be aware of the following:

1. Always sign a letter of authority — specify whether it is direct or indirect representation. The absence of a written authority creates risk for both parties.
2. Supply complete and accurate documents — as the importer you are responsible for the accuracy of the invoice, the customs value, and the origin declaration. The agency lodges the declaration on the basis of what you provide.
3. Review the contract with the customs agency — does it contain clauses covering liability, indemnity limits, and due diligence procedures?
4. Retain documents for a minimum of 4 years — HMRC has the right to audit customs declarations for 4 years (longer in cases of fraud).

When can a customs agency seek compensation from the client?

The reverse scenario also exists. If a customs agency (acting under indirect representation) has incurred the costs of customs debt as a result of incorrect documents or information supplied by the importer — it may seek compensation from the client through civil proceedings.

This is why well-drafted contracts with a customs agency include: - An indemnity clause — the importer undertakes to reimburse costs incurred by the agency as a result of incorrect documents - A limit on the agency's liability for its own errors - A clear allocation of due diligence responsibilities on both sides