Right, let's cut through the confusion. UK import tariffs and duties are one of the most misunderstood aspects of sourcing products from China and Vietnam — and getting them wrong can wipe out your margins before you've sold a single unit. Whether you're a first-time importer trying to figure out how much you'll owe HMRC, or a seasoned UK business looking to reduce your duty bill through trade agreements, this guide gives you the full picture in plain English.
This guide is for UK business owners, ecommerce sellers, Amazon FBA importers, and procurement managers who source (or want to source) products from overseas — primarily China and Vietnam. If you've ever stared at the UK Trade Tariff tool and felt completely lost, or if you've had a surprise customs bill land at Felixstowe that you didn't budget for, you're in exactly the right place.
UK import tariffs are taxes charged by HMRC when goods from outside the UK cross the border — calculated as a percentage of the customs value of your shipment. Import duties are the primary mechanism through which the UK government applies the UK Global Tariff (UKGT), the schedule of rates that replaced the EU's Common External Tariff after Brexit and now governs what UK importers pay across thousands of product categories.
The post-Brexit trading landscape has changed the game for UK importers in ways that are still catching people out. Before 2021, UK businesses importing from China were doing so under the EU's Common External Tariff — a system that was well-understood, well-documented, and widely used. Since the introduction of the UK Global Tariff (UKGT), the UK has its own independent tariff schedule, and whilst it closely mirrors the EU's rates in many categories, there are meaningful differences — and those differences can add up quickly when you're importing at volume.
Then there's the broader global trade environment. 2025 and 2026 have brought significant turbulence: the US has introduced sweeping tariffs on Chinese goods, which has pushed some Chinese manufacturers to seek alternative markets and accelerated a broader shift of production to Vietnam and other Southeast Asian countries. For UK importers, this creates both opportunity and complexity. Vietnam is increasingly competitive on price and quality — and thanks to the UK-Vietnam Free Trade Agreement (UKVFTA), UK businesses importing from Vietnam can access preferential tariff rates that don't apply to Chinese goods. But getting those preferential rates right requires proper documentation and a clear understanding of how rules of origin work.
Closer to home, HMRC has significantly tightened its customs compliance requirements in recent years. The transition from the old CHIEF system to the Customs Declaration Service (CDS) is complete, and businesses that haven't updated their customs processes are now operating with outdated tools. Errors in customs declarations can lead to delayed shipments at Felixstowe or Southampton, unexpected duty bills, or — in serious cases — penalties from HMRC. Understanding your obligations isn't optional; it's fundamental to running a viable import business in 2026.
The honest reality is that duty costs are often one of the biggest hidden variables in a product's landed cost. A 12% duty on a £50,000 consignment is £6,000 — money that goes straight to HMRC before you've paid for warehousing, fulfilment, or marketing. For UK businesses sourcing at scale, understanding and optimising your tariff position is one of the most direct levers available to improve margins.
The UK Global Tariff (UKGT) is the default set of import duty rates that applies to goods entering the UK from countries that don't have a preferential trade agreement with the UK. China falls into this category — there is currently no UK-China free trade agreement, so all goods imported from China are subject to the standard UKGT rate for their commodity code.
The UKGT was introduced on 1 January 2021 when the UK left the EU's customs union. It was designed to closely follow the EU's Common External Tariff (CET) in most product categories, but the UK government has made some deliberate adjustments. Notably, the UK simplified tariff rates in some categories, eliminating nuanced distinctions that existed in the EU system. In other areas — particularly consumer goods, textiles, and some electronics — rates have been tweaked either upward or downward compared to the EU schedule.
| Factor | Sourcing from China | Sourcing from Vietnam |
|---|---|---|
| Trade Agreement with UK | None — standard UKGT applies | UKVFTA — preferential rates available |
| Duty Rate (Typical Clothing) | 12% ad valorem | 0–4% with valid UKVFTA certificate |
| Duty Rate (Electronics) | 0–14% depending on HS code | 0–14% (many electronics 0% under UKVFTA) |
| Duty Rate (Furniture) | 0–6.7% | 0–6.7% (significant reductions via UKVFTA) |
| Rules of Origin Required | No (no FTA to claim) | Yes — EUR.1 certificate or REX declaration |
| Sea Freight Transit Time | ~25–35 days to Felixstowe | ~30–35 days to Southampton/Felixstowe |
| CPTPP Membership Benefit | China not in CPTPP | Vietnam is a CPTPP member |
| US Tariff Disruption Risk | High — US tariffs shifting supply chains | Lower — Vietnam positioned as beneficiary |
Your commodity code — also called a tariff code or HS code — is the 10-digit number that determines which duty rate applies to your goods. It's based on the internationally standardised Harmonised System (HS) maintained by the World Customs Organisation, with the final digits being UK-specific extensions. Getting the right commodity code for your product is genuinely one of the most important things you'll do as an importer, and it's also one of the most commonly done wrong.
HMRC provides a free online tool at trade-tariff.service.gov.uk where you can search for your commodity code. You can search by keyword and browse through a classification hierarchy to find the most accurate code for your specific product. The tool also shows you the applicable duty rate, any trade agreement preferential rates, and any relevant regulatory requirements such as import licences or certificate requirements.
Here's what makes this genuinely tricky: the classification system is highly detailed, and the correct code isn't always obvious. A "yoga mat" might fall under sports equipment, rubber articles, or textile floor coverings depending on its material composition and primary use. A product misclassified under the wrong commodity code can result in paying the wrong duty rate — either underpaying (creating a compliance liability with HMRC) or overpaying (unnecessarily giving money to the government).
If you're importing a product at meaningful volume and you're not 100% certain of its commodity code, it's worth applying for a Binding Tariff Information (BTI) ruling from HMRC. A BTI is a formal, legally binding decision on the correct classification of your goods. Once issued, you can use it for up to three years and it gives you certainty — if HMRC later disagrees with the classification, you're protected if you followed the BTI.
Your freight forwarder or customs broker will need your commodity code to complete the customs declaration. Many experienced forwarders can sense-check your classification based on their experience — and it's worth having that conversation before your goods arrive at Felixstowe or Southampton.
Understanding how your duty bill is actually calculated is essential for accurate landed cost planning. The basic formula sounds simple — duty rate multiplied by customs value — but the devil is very much in the details of what "customs value" actually means.
For most imports, customs value is calculated on a CIF basis — that is, the Cost of Goods plus Insurance plus Freight to the UK border. This means the duty calculation includes not just what you paid for the goods, but also the cost of shipping them to the UK. If you're shipping a £20,000 consignment of goods with £2,000 freight costs and £100 insurance, your customs value is £22,100 — and duty is charged on that full amount.
For most UK importers sourcing from China or Vietnam, we recommend buying on FOB terms. This gives you control over the shipping arrangement (you choose the freight forwarder), clear visibility of your costs, and a clean basis for customs valuation. You'll need to add the freight cost to the FOB value to get your CIF customs value, but this is a straightforward calculation that your freight forwarder can walk you through.
Example: Calculating the landed duty cost on a clothing shipment from China
| Component | Amount (£) | Notes |
|---|---|---|
| FOB Value of Goods | £30,000 | What you paid the supplier |
| Ocean Freight | £2,200 | Shanghai to Felixstowe, 40ft container |
| Marine Insurance | £150 | Typically 0.3–0.5% of goods value |
| CIF Customs Value | £32,350 | FOB + freight + insurance |
| Commodity Code Duty Rate | 12% | Example: women's clothing from China (UKGT) |
| Import Duty Payable | £3,882 | 12% x £32,350 |
| Import VAT Base | £36,232 | Customs value + duty payable |
| Import VAT (20%) | £7,246 | Recoverable via VAT return if VAT-registered |
Note: Duty rates vary significantly by commodity code. Always check the UK Trade Tariff for your specific product. The above is illustrative only.
Importing into the UK is not just about paying the right duty — it's about having the right registrations, documentation, and compliance infrastructure in place. This is an area where UK businesses that used to import via the EU frequently come unstuck, particularly if they were relying on EU-based intermediaries to handle customs before Brexit.
An EORI (Economic Operators Registration and Identification) number is a unique identifier that HMRC requires for any business or individual importing into or exporting from the UK. If you don't have one, your goods simply cannot be cleared through UK customs. Getting an EORI number is free — you apply through HMRC's website, and if you're already VAT-registered, you'll typically receive your EORI number within a few working days.
The Customs Declaration Service (CDS) is HMRC's current platform for submitting import and export declarations. It replaced the old CHIEF system, which was finally switched off in 2023. If you have a customs broker or freight forwarder handling your declarations — which most importers do — they will be submitting through CDS on your behalf.
If you're importing products that require safety certification — electronics, toys, PPE, machinery — you need to be aware of UKCA (UK Conformity Assessed) marking. UKCA is the UK equivalent of the EU's CE mark. For goods being sold in Great Britain, UKCA marking is required. CE marking is no longer sufficient for the GB market. You are responsible for ensuring your products meet UK product safety regulations and carry the appropriate marking.
The following mistakes can result in goods being held at the border, returned to origin, or destroyed at your expense — and in serious cases, financial penalties from HMRC or Trading Standards:
One of the most significant — and most underused — ways UK businesses can reduce their import duty costs is by sourcing from countries that have a free trade agreement with the UK. Two agreements are particularly relevant: the UK-Vietnam Free Trade Agreement (UKVFTA) and the UK's membership of CPTPP.
The UKVFTA came into effect on 1 January 2021. Under the UKVFTA, 65% of tariff lines became zero-rated immediately when the agreement came into force, with the agreement scheduled to eliminate tariffs on 99.2% of goods by 2029. UK-Vietnam trade reached approximately £9.6bn in 2024, and the UKVFTA is a key driver of that growth.
To claim the preferential duty rate under the UKVFTA, your goods must meet the agreement's rules of origin — meaning the goods must genuinely originate in Vietnam. HMRC is alert to tariff circumvention (goods manufactured in China simply transshipped through Vietnam) and enforcement has increased. Your Vietnamese supplier must provide either an EUR.1 certificate or a REX (Registered Exporter) declaration to evidence origin compliance.
The UK formally joined the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) in December 2024, becoming the first European country to do so. Vietnam is a CPTPP member, meaning UK-Vietnam trade has two preferential frameworks to draw upon. In practice, the UKVFTA remains the primary agreement for most UK importers, but CPTPP offers additional flexibility around cumulation of origin from other member countries.
| Product Category | UKGT Rate (China) | UKVFTA Rate (Vietnam) | Saving on £100k Order |
|---|---|---|---|
| Women's Clothing | 12% | 0% (from 2023) | ~£12,000 |
| Footwear (leather) | 8–17% | 0–4% | £4,000–£17,000 |
| Wooden Furniture | 2.7–6.7% | 0% | £2,700–£6,700 |
| Gym Equipment | 2.7–4.7% | 0% | £2,700–£4,700 |
| Consumer Electronics | 0–14% | 0% (most categories) | Up to £14,000 |
Rates are indicative. Verify specific commodity code rates via the UK Trade Tariff before making sourcing decisions.
Beyond trade agreements, HMRC administers several duty relief schemes that UK importers can use to reduce or defer their duty liability. Inward Processing Relief (IPR) allows businesses to import goods without paying import duty if those goods will be processed or incorporated into other goods subsequently re-exported from the UK. This is particularly valuable for UK manufacturers importing Chinese components to make finished goods exported to the EU.
Customs Warehousing allows businesses to store imported goods without paying import duty until those goods are released for sale in the UK or re-exported. Warehousing providers near Felixstowe and Southampton offer bonded facilities specifically designed for importers managing large consignments over extended sell-through periods.
Returned Goods Relief allows goods originally exported from the UK and subsequently returned (e.g., unsold stock from an overseas distributor) to re-enter the UK without duty being charged again, subject to conditions around timeframe and the goods not having been substantially altered.
All duty relief schemes require prior authorisation from HMRC before your goods arrive in the UK. You cannot retroactively claim most reliefs after clearance. Speak to a specialist customs broker or trade compliance consultant and get the authorisation in place before your next shipment.
Import duty and import VAT are two separate charges. When goods arrive in the UK, in addition to any import duty, import VAT at 20% is also due (for most goods). The VAT is calculated on the customs value of the goods plus the import duty payable — which is why the VAT bill is always larger than the duty bill.
Under Postponed VAT Accounting (PVA), introduced in January 2021, UK VAT-registered businesses can defer paying import VAT at the border and instead account for it on their VAT return. For businesses that fully recover their input VAT, PVA means import VAT is effectively a paper exercise — it goes on and comes off in the same return, with no net cash impact. To use PVA, you opt in on your customs declarations (your freight forwarder handles this), then access your monthly Postponed Import VAT Statement through HMRC's online services.
Note that import duty is not deferred under PVA — only the VAT. Import duty remains payable at customs clearance unless you're using a duty deferment account, which allows monthly payment via direct debit. Duty deferment accounts are worth setting up for businesses importing regularly — they smooth out cash flow by batching all duty payments into one monthly direct debit.
The UK has established a network of Freeport zones across England (with similar arrangements in Scotland, Wales, and Northern Ireland). These include sites near Felixstowe (Freeport East), the Thames Gateway (Thames Freeport), and others. Within a Freeport zone, goods can be imported without paying import duty, processed or manufactured within the zone, and then either exported (without ever paying UK duty) or entered into free circulation in the UK at a potentially lower rate if processing has changed the product's commodity code.
Freeports also offer business rates relief, stamp duty land tax relief, and in some cases enhanced capital allowances. The practical relevance for most small to mid-sized UK importers is limited — the customs duty benefits apply primarily to businesses doing meaningful processing or manufacturing within the zone. However, for UK businesses importing components from China, carrying out UK assembly, and exporting a significant proportion of finished goods, the Freeport model is worth exploring.
At Epic Sourcing, we've worked with UK businesses at every stage of their importing journey. The tariff and duty mistakes we see fall into a predictable set of patterns.
Mistake 1: Treating Duty as a Fixed Cost Without Checking. Many UK importers assume a rough duty rate based on hearsay, without checking the actual current rate for their specific commodity code. Duty rates change — the UKGT is updated, product classifications shift. The only reliable way to know your rate is to look up your 10-digit commodity code in the current UK Trade Tariff. Do this for every new product, not just once at launch.
Mistake 2: Not Claiming UKVFTA Preferential Rates. UK businesses importing from Vietnam often pay the standard UKGT rate when they could claim zero or reduced duty under the UKVFTA — simply because they haven't set up the documentation process with their supplier. If you're sourcing from Vietnam, establish whether your products meet UKVFTA rules of origin and set up the EUR.1 or REX flow before your first shipment.
Mistake 3: Under-Declaring the Customs Value. Some suppliers offer to put a lower value on the commercial invoice to reduce the UK importer's duty bill. This is customs fraud, and HMRC takes it extremely seriously. Beyond the legal risk, under-declared values create insurance problems and can trigger HMRC audits. Always ensure the commercial invoice reflects the true transaction value.
Mistake 4: Ignoring Regulatory Requirements for Controlled Goods. Many product categories — food and drink, toys, cosmetics, electrical goods, medical devices — have specific regulatory requirements beyond tariff classification. Finding out at Felixstowe that your goods can't be cleared because you're missing a required certificate is expensive and stressful. Research the full regulatory landscape before placing any order.
Mistake 5: Not Using a Duty Deferment Account. If you're importing regularly, paying duty on each individual shipment at customs clearance is inefficient. A duty deferment account batches all your duty payments into a single monthly direct debit, improving cash flow significantly. The application requires a financial guarantee, but for businesses at meaningful import volumes it's well worth the setup effort.
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Book a free 30-minute consultation with our UK sourcing team. We'll review your current product categories, check your tariff position, and walk you through whether Vietnam sourcing could reduce your duty bill.
Book Your Free ConsultationUnderstanding tariffs and duties is one thing. Implementing that knowledge in the context of a live sourcing project — whilst managing supplier relationships, quality control, logistics, and product development — is another thing entirely. At Epic Sourcing, we've been helping UK businesses source from China and Vietnam since the company was founded, and tariff optimisation is a core part of what we help clients with, not an afterthought.
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Before you commit to a new supplier — particularly if you're considering switching to Vietnam for tariff reasons — it's essential to verify that supplier is legitimate and capable. Our supplier verification service gives you an independent, on-the-ground assessment of any factory in China or Vietnam before you place your first order.
Learn more about Supplier Verification →Epic Sourcing UK is based at 71–75 Shelton Street, London WC2H 9JQ. Our team has direct experience working with UK customs requirements, HMRC compliance, and the logistics infrastructure at Felixstowe and Southampton. We're a UK business built specifically around the needs of UK importers.
Import duty and import VAT are two separate charges applied when goods enter the UK. Import duty is a tariff — a tax charged as a percentage of the customs value of the goods, based on the commodity code and the country of origin. Import VAT is the standard 20% VAT applied to imported goods, calculated on the customs value plus any import duty payable. For UK VAT-registered businesses, import VAT is generally reclaimable on your VAT return (particularly if you're using Postponed VAT Accounting), making it a cash flow consideration rather than a true cost. Import duty, by contrast, is not reclaimable — it's a genuine cost of importing from countries without preferential trade agreements.
Yes, import duty applies to all commercial shipments of goods from China into the UK, subject to the applicable duty rate for your commodity code. The duty rate depends entirely on the commodity code for your specific product — some categories carry a zero rate, others can be 12% or higher. Using the UK Trade Tariff tool to look up your commodity code before importing is an essential first step for any UK business importing from China.
For some product categories and at sufficient import volumes, the duty savings from sourcing under the UKVFTA can be significant enough to justify a switch or at least a partial sourcing diversification to Vietnam. However, duty savings are just one variable in the equation. Vietnam's manufacturing capabilities are strong but not as broad as China's — China still dominates in many product categories for both capacity and supplier depth. Unit costs in Vietnam are often competitive for labour-intensive goods, but MOQs can sometimes be higher and tooling costs vary. At Epic Sourcing, we help clients model both options and make the decision with full cost visibility rather than guesswork.
Goods can be held at UK ports for a number of reasons: incorrect or incomplete customs documentation, HMRC selecting the shipment for a physical inspection, missing regulatory documentation (such as import licences or certificates), or a query about the declared value or commodity code. If your goods are held, your freight forwarder or customs broker will typically be your first point of contact — they'll receive the query from HMRC and work with you to resolve it. Resolving documentation issues can take days or even weeks, during which your goods sit in port storage at your cost. Prevention is always better than cure: invest in getting your documentation right before the goods depart the origin country.
You can technically handle your own customs declarations through HMRC's CDS system, but for most businesses — particularly those importing at any meaningful frequency or volume — using a specialist customs broker or freight forwarder is strongly recommended. Customs declarations require detailed knowledge of commodity codes, valuation rules, document requirements, and CDS procedures, and errors can be costly. A good customs broker will handle the declaration process, advise you on duty rates and potential relief schemes, and alert you to any regulatory requirements for your specific goods. The cost of a customs broker is almost always justified by the time saved and the reduced risk of costly errors.
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Whether you're paying too much duty on Chinese imports, exploring Vietnam sourcing for the first time, or trying to get your HMRC compliance in order — our UK team can help. Book a free 30-minute call and let's look at your numbers together.
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