Understanding the UK Global Tariff (UKGT)
The UKGT replaced the EU Common External Tariff for UK imports from 1 January 2021. Key features:
- Simplification — UKGT removed nuisance tariffs (under 2.5%) and rounded down rates to the nearest standard band (e.g. 4.7% became 4.5%).
- Modernisation — duties on green-energy products (wind, solar) were cut to 0%; many electronics zero-rated.
- Protection — agricultural and sensitive sectors retained higher rates (some over 25%).
- Transparent format — accessible via gov.uk/trade-tariff with 10-digit lookup.
The UKGT applies as the "MFN" (Most-Favoured-Nation) rate when importing from countries the UK has no FTA with, including the USA, China, India, Brazil. Trade preference schemes also apply for developing countries (Generalised Scheme of Preferences, GSP) reducing duty on imports from approved low-income countries.
Classification matters: Each product has a 10-digit commodity code. Misclassification can result in over- or under-payment, with HMRC able to demand back-duty up to 3 years (10 if fraud is suspected). Use the gov.uk Trade Tariff search tool or apply for an Advance Tariff Ruling (ATR) for complex products.
Free Trade Agreements active in 2025/26
UK FTAs that grant 0% (or reduced) duty in 2025/26:
- EU TCA (Trade and Cooperation Agreement) — 0% duty on most goods of EU origin, with rules of origin certification.
- UK-Australia FTA — full 0% on most goods; phased reductions on agriculture (15-year transition).
- UK-New Zealand FTA — similar to Australia.
- UK-Japan CEPA — 0% on most industrial goods; phased agriculture cuts.
- UK-Singapore, UK-Vietnam — 0% on most goods.
- UK-Switzerland, UK-Norway/Iceland — rolled over from EU FTAs.
- CPTPP — UK acceded in late 2024; ratification with each member individually.
Rules of origin are crucial — goods must qualify as originating in the FTA partner country (e.g. EU). For manufactured goods, this often means a minimum percentage of EU-content. For agricultural goods, "wholly obtained" is typical. Importers must hold proof: Statement of Origin, EUR.1 (where applicable), or Importer's Knowledge declaration.
Three worked examples (UK 2025/26)
Example 1: £10,000 mens' suit shipment from USA
UKGT rate for mens' suits: 12%. CIF value £10,000.
Calculation: Duty £1,200. Import VAT 20% × £11,200 = £2,240. Total £3,440. Landed cost £13,440.
Example 2: £20,000 EU machinery under TCA
CNC machine of German origin with statement of origin. UKGT MFN would be 4%.
Calculation under TCA (0%): Duty £0. VAT 20% × £20,000 = £4,000. Total £4,000. Landed cost £24,000. Without origin proof: 4% duty £800 + VAT 20% × £20,800 = £4,160. Total £4,960. Origin certification saves £960.
Example 3: Wine from Australia — full FTA preference
£500 case of Australian wine. UKGT excise + customs combined would be ~£100. Under UK-Australia FTA: 0% customs duty (excise still applies separately).
Calculation: Customs duty £0 under FTA. Import VAT 20% × £500 = £100. Plus alcohol excise duty (separate). Saves the £100 customs duty that would have applied without FTA proof.
Common mistakes to avoid
- Assuming EU imports are still tariff-free post-Brexit — only with TCA origin proof.
- Misclassifying products to lower-duty codes — HMRC audits and demands back-duty.
- Forgetting that anti-dumping duties (separate from MFN) apply to specific goods/origins (e.g. Chinese steel, e-bikes).
- Not keeping origin certificates for 6+ years — HMRC can audit retrospectively.
- Believing CIF = goods value only — includes insurance and freight to UK port.
- Using EUR.1 forms for goods that don't qualify under EU TCA rules of origin.
When to use this calculator
Use this calculator before any commercial import to estimate landed cost, when sourcing decisions are being made (UK vs EU vs Asia), and at each shipment to verify duty paid is correct. Compare FTA vs MFN scenarios when assessing supplier choice. Re-run when new FTAs come into force (CPTPP rolling implementations through 2026).
Regional differences (Scotland, Wales, Northern Ireland)
UK customs duty is administered uniformly by HMRC across England, Scotland, and Wales. Northern Ireland follows the EU Customs Union rules under the Windsor Framework: goods imported into NI from outside the UK may face EU customs procedures, with reimbursement for those entering NI but staying in the UK ("not at risk"). The UK Internal Market Scheme provides exemptions for movements not deemed at risk of entering the EU single market.