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HS Code Duty Calculator

Duty by product category, and what misclassification costs.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Duty rates and thresholds change with trade policy. These are planning estimates — the entry filed with customs decides the actual charge.

Duty per shipment

£696.00

at the correct 12.0% rate

Correct rate 12.0%£696.00
Declared rate 6.5%£377.00
Difference per shipment£319.00
Over a year£2,552.00

Under-declaring by this much leaves £2,552 a year of unpaid duty exposed to reassessment, with penalties and interest on top. A binding tariff ruling removes the uncertainty.

How the HS Code Duty Calculator works

The HS code determines the duty rate, and a wrong code is expensive in both directions. Under-classifying invites reassessment, penalties and interest; over-classifying means quietly overpaying on every shipment, sometimes for years before anyone notices.

Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.

Frequently asked questions

What is an HS code?

A standardised commodity classification used by nearly every customs authority. The first six digits are internationally common; countries extend them to eight or ten digits for their own tariff and statistical purposes.

How do I find the right code?

Use your customs authority's tariff lookup and read the section and chapter notes, which govern classification and frequently override what the description suggests. For anything ambiguous or high volume, a binding ruling from customs gives certainty.

What is a binding tariff ruling?

A formal decision from customs confirming the classification of your product, valid for several years. It removes the risk of reassessment and is worth obtaining for any product you import in quantity or where the classification is genuinely arguable.

Who is responsible if the code is wrong?

The importer of record, even when a broker or freight forwarder chose the code. Delegating the task does not delegate the liability, which is why reviewing what your broker declares is worth the time.

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