CUSTOMS & TRADE DEFINITION
Harmonized System (WCO HS)
Authoritative Definition
The Harmonized System is the global customs classification framework governed by the World Customs Organization (WCO). Updated every five years (currently 2022 Edition), it encompasses 21 Sections, 98 Chapters, and 5,755 6-digit subheadings.
Why It Matters in International Trade
Over 98% of international merchandise trade is classified using the WCO Harmonized System backbone.