Understanding customs duty and VAT when importing to the UK

When importing products to the UK, you must account for both customs duty and import VAT on most goods entering from outside the country. These charges are calculated on the value of the goods, shipping costs and insurance, and they can significantly affect your upfront costs and working capital.

Understanding the processes, available reliefs and how to manage payments helps new importers plan cashflow more accurately and avoid unexpected delays at the border. Rates and rules change regularly, so always verify the latest details directly on GOV.UK and with HMRC before making purchases.

How customs duty is calculated on imports

Customs duty is a tax charged on goods imported from outside the UK. The amount depends on the type of product, its origin and its declared value. You calculate duty on the combined cost of the goods, freight and insurance.

Classification uses the commodity code system; each product has a specific code that determines the applicable rate. Incorrect classification can lead to overpayment or penalties, so checking the correct code on the Trade Tariff tool is an essential first step. Many new importers start by searching for similar products already imported to the UK to see the codes and rates applied in practice.

Some goods qualify for reduced or zero rates under trade agreements, but proof of origin is usually required. For small test orders it is common to pay the standard rate initially and review later whether a claim for preference can be made.

Import VAT explained

Import VAT is charged at the same rate as domestic VAT on equivalent UK sales. It is applied to the total value including the goods, shipping, insurance and any customs duty. Unlike domestic VAT, import VAT must normally be paid at the point the goods clear UK border controls.

For many new importers this creates a cashflow burden because the tax is paid before the stock is sold and before output VAT is collected from customers. Accurate record-keeping of import documents is therefore critical for any later reclaim or set-off against your VAT return.

Using a deferment account to manage payments

A deferment account, also known as a Customs Duty Deferment Account, lets you postpone payment of both customs duty and import VAT until a single monthly direct debit. This spreads the cost and improves cashflow compared with paying on each individual shipment.

To open an account you apply through HMRC and usually need to provide a guarantee, often in the form of a bank guarantee or insurance bond. The guarantee amount is based on the level of duty and VAT you expect to defer. New importers typically begin with modest import volumes to keep the required guarantee manageable.

Once approved, you receive a deferment number that your freight forwarder or customs agent uses when clearing shipments. At the end of the month HMRC issues a statement and collects the total owed by direct debit around the 15th of the following month. This gives you extra weeks of cash in hand compared with immediate payment on arrival.

Many early-stage e-commerce sellers share that the deferment account is one of the first formal arrangements they put in place once regular importing begins.

Reclaiming import VAT through your VAT return

Registered VAT businesses can usually reclaim import VAT as input tax on their next VAT return, provided the goods are for use in the business and proper records are kept. The reclaim reduces the net VAT payable to HMRC or increases any refund due.

To make a successful reclaim you need the import VAT certificate (C79) or equivalent electronic confirmation from HMRC. This document shows the exact amount of VAT paid on each import. Forwarders or agents can arrange for these certificates to be issued automatically.

Timing matters: the VAT can only be reclaimed in the accounting period in which the goods cleared and the tax was accounted for. If your VAT return periods do not align neatly with import dates, cashflow can still be affected even though the tax is ultimately recoverable.

Accurate matching of purchase invoices, shipping documents and C79 certificates is therefore a practical discipline that every new importer should establish early.

Cashflow impact for new importers

Even when VAT is fully reclaimable, the need to pay it upfront ties up working capital until the VAT return is submitted and any refund received. For a new business importing several pallets of stock each month this can represent a significant temporary outflow.

Customs duty, by contrast, is not recoverable in the same way and forms a permanent part of the landed cost. Budgeting for duty as a non-reclaimable expense is essential when calculating margins and setting retail prices.

Using a deferment account helps by moving the payment date, but the guarantee requirement still ties up credit lines or cash. Some importers choose to pay on a shipment-by-shipment basis at the start while they test demand, then move to deferment once volumes and predictability increase.

Building a simple cashflow forecast that includes expected duty, VAT, shipping and the timing of VAT reclaims allows more realistic decisions about order sizes and supplier payment terms. Many founders begin by importing smaller quantities to learn the actual costs and timings before committing to larger orders.

Practical steps to prepare for your first imports

1. Register for VAT if you are not already registered and expect to exceed the current registration threshold or wish to reclaim import VAT.

2. Research commodity codes and estimated duty rates for your products using the GOV.UK Trade Tariff tool. Cross-check with suppliers or agents.

3. Decide whether to use a freight forwarder or customs agent; most new importers find this reduces errors in the early stages.

4. Apply for a deferment account and the necessary guarantee if your planned import volume justifies the setup time.

5. Set up a filing system for commercial invoices, packing lists, bills of lading or airway bills, and C79 certificates.

6. Include duty and non-reclaimable costs in your product costing spreadsheets from day one.

7. Monitor actual versus forecast costs on the first few shipments and adjust order quantities or pricing accordingly.

Where to find current information

Rules, rates, thresholds and procedures for customs duty and import VAT change. Always consult the official GOV.UK pages on importing and VAT, the HMRC Trade Tariff tool, and the current guidance on deferment accounts. If you are unsure about classification or reliefs, consider speaking directly to HMRC or a licensed customs agent before placing large orders.

Founders developing their businesses at Loomworks can also discuss general importing approaches with the operator team, although specific tax advice must come from qualified professionals or HMRC.

Frequently asked questions

Related reading: How to audit suppliers as a small UK business, Product testing laboratories and certification for UK sellers, Using Alibaba to source products as a UK startup. Browse all product sourcing guides or apply to Loomworks.