US Tariff HTS Code Lookup & Import Duty API

US tariff API and HTS code lookup for import duty research, customs tariff rates, tariff classification, landed cost research, general rates, special rates, units, and footnotes. Search official USITC Harmonized Tariff Schedule records by product keyword or HTS code prefix. Results are published classification and rate evidence—not a binding CBP ruling, legal advice, complete landed-cost calculation, origin or FTA proof, or guarantee of duty owed; Chapter 99 duties, exclusions, quotas, trade remedies, valuation, origin, and revisions can change treatment.