What is the difference between HS and HTS codes?

HS codes and HTS codes are related but different classification systems. HS Code (Harmonized System): - 6 digits, international standard - Used by 200+ countries - Same in every country for the first 6 digits HTS Code (Harmonized Tariff Schedule): - 10 digits, US-specific - First 6 digits match the HS code - Additional 4 digits for US-specific classification - Used for US import duty calculation Other extensions: - EU Combined Nomenclature (CN): 8 digits - UK Trade Tariff: 10 digits - Australia: 10 digits Which do you need? - Importing to US: 10-digit HTS from hts.usitc.gov - Exporting from US: Schedule B number - Importing to EU: 8-digit CN code via trade.ec.europa.eu/taxation_customs/dds2/taric - General use: 6-digit HS code