CUSTOMS & TRADE DEFINITION
HTS Code (Harmonized Tariff Schedule Code)
Authoritative Definition
An HTS code is an 8- to 10-digit national tariff extension used by specific countries—such as the United States (HTSUS)—to enforce statutory import duties, trade quotas, and statistical tracking beyond the 6-digit WCO backbone.
Why It Matters in International Trade
U.S. importers must declare exact 10-digit HTSUS codes on CBP Form 7501 entry summaries for lawful customs clearance.