Customs duty is calculated from classified value, origin, and trade agreement preferences declared on the bill of entry.

What importers should know

Understanding Customs Duty Calculation helps you file accurate customs declarations, avoid penalties, and coordinate with freight forwarders, CHAs, and banks. Requirements vary by country, but the concepts below apply across major customs regimes (WCO-aligned systems).

Practical details

Includes ad valorem duty, specific duty, anti-dumping, safeguard, and import VAT/GST where applicable.

See our types of bill of entry guide, customs clearance process, and country-specific pages for local filing rules.

Documentation template

Download the template on this page to structure supporting paperwork before you file in your national customs system.

Free template download

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Open HTML or Word in any editor. For PDF, use Print → Save as PDF in your browser. Import CSV into Excel or Google Sheets.

Prepare your import documentation

Use free templates, country guides, and step-by-step customs topics — no account required.

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Frequently asked questions

Importers, customs brokers, logistics teams, and compliance staff involved in international shipments.

Concepts are widely aligned with WCO practice, but always confirm local law and portal requirements.

Browse our bill of entry by country hub for India, UAE, UK, USA, EU, ASEAN, and more.