Customs Duty Calculator UK - Import Duty and VAT Estimate
Answer: UK customs duty is estimated from customs value times the confirmed duty rate, then import VAT is calculated on customs value plus duty, excise or other import charges, and relevant UK incidental costs.
- Use the UK Trade Tariff service or UK Global Tariff guidance to confirm the commodity code, duty rate, origin treatment, suspensions, quotas, and trade remedies.
- Import VAT is normally based on customs value plus duty, excise or other import charges, and relevant UK incidental costs when they must be included.
- This is a planning estimate for Great Britain imports. Northern Ireland, excise goods, reliefs, returned goods, low-value ecommerce, and special customs procedures may need different treatment.
- This UK calculator does not use U.S. MPF, HMF, or CBP entry-fee logic.
UK customs duty is estimated from customs value times the confirmed UK duty rate, then import VAT is calculated on customs value plus duty, excise or other import charges, and relevant UK incidental costs.
How the calculation works
Use this UK customs duty calculator as a planning estimate before you ask a customs broker or freight forwarder for a final clearance quote. Enter all values in GBP after converting foreign currency at the exchange rate required for your declaration.
| Step | Formula |
|---|---|
| Planning customs value | goods value + international freight + insurance + other dutiable additions |
| Customs Duty | planning customs value x UK duty rate |
| Import VAT base | customs value + Customs Duty + excise/additional import charges + relevant UK incidental costs |
| Import VAT | import VAT base x import VAT rate |
| Estimated import charges | Customs Duty + excise/additional charges + import VAT + deferment fee + broker fee |
The duty rate must come from the UK Trade Tariff or UK Global Tariff treatment for the correct commodity code, origin, and preference status. This calculator does not classify goods, decide origin, apply reliefs, or file with HMRC. It also does not include U.S. Merchandise Processing Fee, Harbor Maintenance Fee, or any other CBP-specific charge.
FAQ
How do I calculate customs duty in the UK?
Start with the customs value, then multiply it by the duty rate confirmed from the UK Trade Tariff for the product commodity code and country of origin. The result is a planning duty estimate, not the final HMRC assessment.
What should I include in customs value?
For planning, include the goods value, international freight, insurance, and any dutiable additions such as assists, packing, or royalty amounts where applicable. Your broker should confirm the exact valuation basis for the declaration.
How is UK import VAT calculated?
UK import VAT is normally based on the customs value plus Customs Duty, excise duty or other charges payable on importation, and relevant incidental costs such as handling, storage, declaration, or UK destination transport when those costs must be included.
What import VAT rate should I use?
The standard UK VAT rate is 20% for many goods, but reduced, zero-rated, exempt, or special valuation treatment can apply. Keep the VAT rate editable and confirm the rate for the product before relying on the estimate.
Does this include excise duty or anti-dumping duty?
Yes, as an editable planning input. Use the excise/additional charges field for alcohol, tobacco, hydrocarbon oil, product levies, anti-dumping duty, safeguard duty, or other charges if they apply. The calculator does not determine those charges automatically.
What is a deferment fee?
A deferment fee is a broker or forwarder charge for using a duty deferment account to pay HMRC duty and import VAT. It is a service or finance charge, not Customs Duty itself.
Is this calculator valid for Northern Ireland?
This page is built for Great Britain planning. Northern Ireland imports can require different treatment depending on route, origin, and whether goods are at risk of moving to the EU, so confirm NI cases with HMRC guidance or a customs broker.
Does the UK use U.S. MPF or HMF?
No. U.S. MPF and HMF are not UK import charges. This UK calculator uses Customs Duty, import VAT, excise or additional import charges, deferment fees, and broker fees.
Can this replace HMRC or a customs broker?
No. It is a planning calculator. HMRC systems, the UK Trade Tariff, and your customs broker determine the final commodity classification, valuation, origin treatment, reliefs, import VAT base, and declaration amount.
Comparison
| Option | Best for | Notes |
|---|---|---|
| UK customs duty calculator | Early landed-cost planning for Great Britain imports | Models duty, import VAT, excise/additional charges, deferment fee, and broker fee |
| UK Trade Tariff service | Confirming commodity code, duty rate, VAT rate, suspensions, and trade remedies | Source of rate logic; still needs correct product classification |
| Customs broker quote | Final pre-entry clearance estimate | Can apply route, valuation, origin, excise, deferment, and document details |
| Generic landed cost calculator | Comparing product margin across markets | Useful for commercial planning but less specific to HMRC import VAT rules |
| U.S. customs duty calculator | Imports into the United States | Uses U.S. MPF/HMF logic and should not be used for UK customs charges |
Dated facts
As of May 13, 2026, GOV.UK lists the standard UK VAT rate as 20%, while the Trade Tariff service remains the public lookup route for commodity codes, duty rates, VAT treatment, suspensions, and reductions. HMRC import VAT guidance says the VAT value starts from customs value and adds Customs Duty or levies, excise duty or other import charges, and relevant incidental expenses where required. UK Global Tariff rates do not apply blindly to every shipment: free trade agreements, developing-country preferences, duty suspensions, tariff quotas, reliefs, trade remedies, and Northern Ireland routing can change the final charge.
Frequently asked questions
- How do I calculate customs duty in the UK?
- For planning, build the customs value from goods value, international freight, insurance, and dutiable additions, then multiply by the duty rate confirmed from the UK Trade Tariff for the commodity code and origin.
- How is UK import VAT calculated?
- Import VAT is normally calculated on the customs value plus Customs Duty, excise duty or other import charges, and relevant incidental costs such as handling or UK destination transport when they must be included.
- What VAT rate should I use for UK imports?
- The standard UK VAT rate is 20% for many goods, but reduced, zero, exempt, or special valuation treatment can apply. The calculator leaves the import VAT rate editable so you can match the commodity and HMRC treatment.
- Does this calculator include excise duty?
- It includes an editable excise or additional charges field for alcohol, tobacco, fuel, product levies, anti-dumping duty, safeguard duty, or other import charges. It does not classify those charges automatically.
- Does this replace the UK Global Tariff or HMRC guidance?
- No. Use the UK Trade Tariff service to confirm commodity code, origin, duty rate, VAT treatment, suspensions, quotas, reliefs, and trade remedies before making a customs declaration.
- Is this for Northern Ireland imports?
- It is designed for Great Britain planning. Northern Ireland movements can involve different rules depending on whether goods are at risk of moving to the EU, so confirm the route with HMRC or a customs broker.
- Does the UK charge U.S. MPF or HMF?
- No. MPF and HMF are U.S. customs fees. This UK calculator uses duty, import VAT, excise or additional import charges, deferment fees, and broker fees instead.