GlossaryEN1 min readUpdated: Jun 22, 2026
customs laws
Customs laws are the binding legal rules of a jurisdiction governing the import, export, and transit of goods across national borders—covering duty and tax assessment, required formalities, inspection procedures, and penalties for non-compliance.
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Source: https://www.wcoomd.org/en/topics/facilitation/instrument-and-tools/conventions/pf_revised_kyoto_conv.aspx
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Definition & Explanation
Customs laws are the binding legal rules of a jurisdiction governing the import, export, and transit of goods across national borders—covering duty and tax assessment, required formalities, inspection procedures, and penalties for non-compliance. For customs brokers, freight forwarders, and importers, they form the legal baseline of daily operations; every cross-border movement of goods falls under their scope. At the international level, national customs laws are shaped by multilateral frameworks, including WTO agreements on customs valuation and trade facilitation and the WCO's Revised Kyoto Convention, while each country retains its own implementing legislation. Customs laws should be distinguished from broader foreign trade regulations, which may impose import or export restrictions on political, security, or public-policy grounds beyond purely fiscal considerations.
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