GlossaryEN1 min readUpdated: Jun 12, 2026

WCO HS Convention

When goods cross a border, it must be clear what they are—and for that, there is the Harmonized System.

Last updated: 12 June 2026Published: 27 January 2026

Source: https://www.wcoomd.org/en/topics/nomenclature/overview/hs-convention.aspx

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Logistics Concept

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When goods cross a border, it must be clear what they are—and for that, there is the Harmonized System. The WCO HS Convention is the international treaty that defines this eight-digit classification system for all commodity categories and is administered by the World Customs Organization (WCO). Importers, exporters, and customs officials use HS codes to correctly calculate duties, record trade statistics, and apply security regulations—each commodity receives a unique number like 6204.62 (women's cotton trousers). The convention establishes not only the structural framework but also the rules for interpretation and classification decisions, ensuring consistency across borders. It is observed by over 200 countries worldwide and forms the backbone of modern customs nomenclature.

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