Formally yes, in practice almost nobody does. UK import declarations are lodged in CDS and a business can file itself: it needs a GB EORI, a CDS subscription through Government Gateway and compatible customs software. In practice a customs agent or freight forwarder files it, because the cost of errors and the time to learn the system outweigh the saving. We handle clearance as part of the transport.
What do you formally need to self-clear?
- An EORI number starting with GB; without it no declaration can exist, as covered in our piece on the EORI number for UK trade.
- The company's own Government Gateway account and a CDS subscription; an agent's account cannot be used.
- CDS-compatible customs software, because HMRC provides no form for keying import declarations by hand.
- Payment arrangements: a duty deferment account or immediate payment, plus optionally VAT settlement through postponed VAT accounting.
- Tariff knowledge: commodity codes, procedures, document codes and origin preferences.
- For ro-ro transport, additionally GVMS and GMR handling, described in GVMS: how it works and the carrier's role.
Where do self-filing importers stumble most often?
Not at registration, but in the content of the declarations. CDS requires dozens of data elements, with procedure and document codes that owe nothing to intuition. Classic failures: a wrong commodity code and the wrong rate, covered in what a tariff mistake costs, wrongly declared origin and a lost TCA zero rate, transport costs missing from the customs value, and late supplementary declarations under simplified procedures. On top of that comes vocabulary you simply have to know; we collected the key terms in our CDS, CHIEF and MRN glossary. Each of these errors surfaces months later, at an audit or an HMRC letter, with interest.
When does self-clearing make sense?
When you have a steady, repeatable stream of identical goods, an in-house customs role or a person who genuinely knows the tariff, and volume at which the monthly cost of software and time pays back. Companies importing the same lines from the same suppliers can clear themselves efficiently. For a business shipping varied goods every few weeks, the numbers almost never add up.
When does a customs agent simply pay off?
An agent, acting as a direct or indirect representative, takes on the technical correctness of the declaration: codes, data elements, deadlines, communication with HMRC. We describe the types of representation in our article on customs representation and agency. In our model, clearance on both sides of the border is part of the transport service: one order covers the carriage, the Polish export declaration, the UK import and the GMR for the crossing. The importer supplies invoices and data, and the responsibility for pulling it together on time sits with us. In groupage this is the only practical setup, because one vehicle carries a dozen declarations that must be ready at the same moment.
What does self-clearing really cost?
It is not one invoice but four items that are easy to overlook. The first is customs software on subscription, paid regardless of how many declarations you lodge in a given month. The second is time: learning CDS, keeping up with tariff and procedure changes, and the filing itself, which on early attempts can take hours. The third is the financial risk of errors, which land on the declarant: back-payments, interest and post-audit corrections. The fourth, least obvious, is the cost of a standing truck when a declaration is not ready in time for the crossing; on a linehaul service a late declaration means moving to the next departure. Before deciding, price these four items on your own volumes and compare them with an agent's offer or a carrier with clearance bundled in. The calculation usually becomes unambiguous at just a few shipments a month.
Sources
- GOV.UK: get access to the Customs Declaration Service (accessed 17 Aug 2026)
- GOV.UK: get an EORI number (accessed 17 Aug 2026)
Prefer clearance to simply be part of the transport? Write via our contact form: we run the declarations on both sides and you receive the goods with a complete document set.
