Harmonized Tariff Schedule(HTC) and coding system(HS) is the mechanism by which international tariffs are standardized. Each country define its own Harmonized Tariff Schedule(HTS). Importers and Exporters must classify all goods moved across international borders using the HS code of the country of import. The first 6 digits of any HTS code is the same for any country. The Office of Tariff Affairs and Trade Agreements(USITC) is responsible for publishing the Harmonized Tariff Schedule of the United States Annotated (HTSA).
Exporters must need to know the HS number of the product for the following reasons: