USITC Harmonized Tariff Schedule
The lookup index is generated from USITC's 2026 HTS Revision 9 JSON release. The HTS is the official U.S. tariff schedule for imports.
Open USITC HTSOfficial-source first
Sources and limits
This site is designed as a research shortcut. It should point you back to official tariff text, rulings, and customs guidance before you act.
USITC Open Data
USITC publishes HTS data in downloadable and machine-readable formats, including CSV, Excel, JSON, and API access.
Open USITC dataCBP CROSS Rulings
CBP's rulings database helps researchers compare product facts against prior classification rulings. Rulings can be highly fact-specific.
Search CBP rulingsTrade.gov HS Code Guide
Trade.gov explains the relationship between HS codes, HTS numbers, and Schedule B numbers for U.S. import and export workflows.
Read Trade.gov guideWorld Customs Organization
The WCO maintains the international Harmonized System, which is the global 6-digit foundation used by customs authorities.
Read WCO overviewHS Finder Methodology
Read how the lookup index is generated, how hierarchical descriptions are expanded, and what the ranking does not claim to prove.
Read methodologyWhat this site does not do
It does not issue customs rulings, guarantee a code, calculate all trade remedy duties, determine admissibility, or replace a licensed broker or official customs authority.