Importing for the first time can feel like the paperwork arrives all at once. Your supplier is asking for shipping instructions, your forwarder wants a commodity code, and somewhere in the background, HMRC expects a declaration to be filed before your goods can move an inch beyond the port.
The good news is that the requirements are finite and predictable. Almost every delay we see at Felixstowe or Southampton comes down to something that could have been sorted weeks earlier, on dry land, before the container was even loaded.
Here is what to have in place before your first shipment sails.
Start With Your EORI Number
An Economic Operators Registration and Identification number is the reference HMRC uses to identify your business on every customs entry. Importers into Great Britain need a beginning with GB, and you cannot clear goods without it.
Applications go through HMRC and are usually processed quickly, often within a few working days, though it is not something you want to leave until the vessel is a week out.
One detail catches people out. Having an EORI number is not enough on its own, as it also needs to be subscribed to the Customs Declaration Service, the system that all UK declarations now pass through.
If that link has not been made, your forwarder will not be able to file on your behalf, and your container will sit in temporary storage, accruing charges. Check it before your first booking, not after.
Classify Your Goods Correctly
Every product you import needs a commodity code, and that code determines the duty rate you pay, the VAT treatment, and whether any licences, quotas or additional measures apply.
Codes are found in the UK Trade Tariff, and classification is a genuine skill rather than a quick lookup. The difference between two apparently similar codes can be several percentage points of duty on every consignment you ever bring in.
Suppliers will often volunteer a code on the invoice. Treat it as a starting point rather than a decision, because they are classifying for export from their own country, and the responsibility for getting it right at this end sits with you.
If your product is unusual or sits on the boundary between two headings, it is worth asking HMRC for an Advance Tariff Ruling, which gives you a legally binding classification you can rely on.
Understand What Goes Into the Customs Value
Duty is not calculated on the price of the goods alone. HMRC works from the customs value, which for most imports means the price paid plus the cost of transport and insurance to the UK border.
That means freight charges, and often a proportion of them if a container holds several consignments, form part of the figure to which duty is applied.
Other additions may also apply, including royalties, licence fees, and the value of any materials you supplied to the manufacturer free of charge.
Undervaluing at this stage is one of the most common findings in an HMRC audit, and the assessment usually arrives with interest attached.
Check Whether You Can Claim Preferential Duty
The UK has trade agreements and preference schemes covering a large share of its import trade, and many importers pay full duty simply because nobody checks.
Agreements with countries, including South Korea and New Zealand, can reduce or remove duties entirely. At the same time, the Developing Countries Trading Scheme offers reduced rates on goods from a long list of origins, including Bangladesh, Cambodia and Pakistan.
Preference is never automatic. You need valid proof of origin, issued in the correct format for the scheme in question, and your goods must genuinely meet the rules of origin rather than simply having been shipped from that country.
Ask your supplier for the documentation early, because retrofitting it after arrival is far harder than requesting it upfront.
Decide How You Will Handle Import VAT
Import VAT applies to most goods at the standard rate, and if you are VAT registered,d you will reclaim it. The question is whether you want to fund it in the meantime.
Postponed VAT Accounting lets VAT-registered businesses account for import VAT on their VAT return rather than paying it at the border, which removes the cash flow gap entirely. For a business importing regularly, this is the single most useful thing to set up before your first shipment.
Using it is straightforward, but your customs agent needs to know how to apply it on the declaration, so tell them at the point of booking. Duty still has to be paid, and if you import frequently, a duty deferment account allows you to settle monthly rather than on a shipment-by-shipment basis.
Check for Licences, Controls and Certificates
Customs clearance is not the only clearance your goods may need. Food, plant products, animal by-products, wood packaging, chemicals, cosmetics, electrical goods, and anything dual-use can carry additional requirements from bodies other than HMRC, and port health checks can hold a consignment even when the customs entry is perfect.
Product standards matter as well. Goods placed on the market in Great Britain must meet UK conformity requirements. While CE marking remains acceptable for many categories, it is worth confirming where your particular product falls rather than assuming.
Agree on Your Incoterms and Appoint Your Agent
Settle the Incoterm with your supplier before you agree on a price, because FOB, CIF and EXW each move the balance of cost and risk in a different direction, and a quote is meaningless without one.
Then appoint your customs agent or forwarder and give them written authority to act on your behalf; this is a formal requirement, not a mere formality.
Keep Your Records
Finally, keep everything. Invoices, packing lists, transport documents, declarations, origin proofs, and duty calculations should be retained for at least 4 years for customs purposes and 6 years for VAT. HMRC can and does look back, and a tidy file is the difference between a routine enquiry and an expensive one.
None of this is beyond a first-time importer, but it does reward preparation. If you would like a hand working through the list before your first container ships, our team is always happy to talk it over with you.
