Importing is a sequence, and each step has a document attached to it. Get the sequence right and the goods clear customs, the duty is correct and the VAT is recovered in full. Get one step wrong — usually the commodity code, occasionally the incoterm — and the cost shows up as duty you did not budget for, VAT you cannot reclaim, or a consignment sitting at a port accruing storage charges.
The prerequisites
Before the first shipment, two things must exist. An EORI number beginning GB is required to import into England, Wales and Scotland; moving goods into Northern Ireland can require an XI number as well. Registration is free and takes days rather than weeks, but nothing moves without it.
The second is a decision about who makes the customs declaration. You can do it yourself, which means software and trained people, or you can appoint a customs agent, a freight forwarder or your transporter to do it for you. Most businesses use an agent — but the legal responsibility for the accuracy of the declaration does not transfer with the work. An agent acting as your direct representative declares in your name and you carry the liability; indirect representation shares it. Businesses are routinely surprised by this after an error, having assumed they had bought a service and outsourced a risk.
Classification is the decision that costs money
Every product has a commodity code, and that code determines the rate of duty, whether an import licence is required, and whether any preference or suspension applies. It is the single most consequential judgement in the whole process, and it is routinely made by whoever fills in the first declaration and then repeated indefinitely.
Two things are worth doing properly. First, classify deliberately, with the reasoning documented — the notes to the tariff are a legal instrument, not a suggestion, and small distinctions in material or function move goods between rates. Second, where the classification is genuinely arguable and the volumes justify it, apply for an Advance Tariff Ruling, which binds HMRC for a period and removes the argument entirely.
Alongside the code sit two other cost drivers: origin, which determines whether a trade agreement reduces the duty to nil and which requires proof rather than assertion, and customs valuation, which decides the figure the duty percentage is applied to. Valuation usually follows the transaction value, but it must include costs the invoice may not show — royalties, assists, and freight and insurance to the UK border depending on terms.
Import VAT: stop paying it at the border
Import VAT is charged at the rate the goods would attract in the UK. A VAT-registered business recovers it as input tax, supported by the monthly C79 certificate — but recovering it later means funding it now, and for a business importing regularly that is a permanent cash drag.
Postponed VAT accounting removes it. Instead of paying import VAT at the border and reclaiming it later, the business accounts for it as output tax and reclaims it as input tax on the same VAT return, with no cash outlay at the border. The two entries cancel only where the VAT is fully recoverable: a partly exempt business, or one importing goods put to non-business use, recovers under the normal input tax rules and is left with a real cost. It requires no application or approval: the importer simply indicates it on the declaration and downloads the monthly statement to support the figures. Any business importing goods and not using it is financing HMRC for no reason.
Duty deferment does the equivalent job for customs duty, consolidating charges into a single monthly direct debit rather than payment per consignment, subject to a guarantee or an approved waiver.
Where the money leaks
- The wrong incoterm. Buying on DDP terms makes the supplier responsible for import — which can leave the UK business unable to recover the import VAT because it was not the importer of record. This is the most expensive incoterm mistake and the least visible;
- Not being the owner of the goods. Import VAT is recoverable by the owner at the time of import. Businesses importing goods they do not own — for processing, or on behalf of an overseas principal — frequently reclaim VAT they are not entitled to;
- Missed reliefs. Inward processing, returned goods relief and temporary admission each remove duty in defined circumstances, and each requires authorisation obtained before the goods arrive;
- Undeclared additions to value — tooling paid for separately, licence fees, design work supplied free to the manufacturer — which HMRC finds on audit and assesses with interest;
- Record keeping. Commercial invoices, declarations and C79s must be kept, and a business that cannot produce them loses the input tax as well as the argument.
A sensible order of operations
For a business importing for the first time: obtain the EORI; classify the products and price the duty into the landed cost model before committing to a supplier; agree incoterms that leave you as importer of record; appoint an agent and confirm in writing the basis of representation; elect postponed VAT accounting on the first declaration — there is nothing to register for; and set up duty deferment once volumes justify the guarantee. Then review the classifications annually, because product ranges change faster than the codes assigned to them.
Acumon advises on the VAT side of importing through international VAT and VAT compliance work, including recovery position, incoterm consequences and the treatment of goods moved for overseas principals — see also our guide to the reverse charge for the services side of the same question. If you are importing and still paying VAT at the border, that is the first thing to fix.