What it is
The Harmonized Tariff Schedule (HTS) is a globally standardized system of names and numbers for classifying traded products. It is used by customs authorities worldwide to identify products for duty, tax, and statistical purposes. In the U.S., the HTSUS (Harmonized Tariff Schedule of the United States) details the tariff rates and statistical categories for all merchandise imported into the U.S., based on the product's material, function, and processing.
The HTS is crucial for international trade and policy, as specific tariff rates are directly tied to these classifications. Changes to HTS codes or their associated duty rates, often resulting from trade agreements or retaliatory tariffs, can significantly alter import costs for businesses. Investors and companies use the HTS to calculate import duties, ensure compliance, and understand the cost implications of sourcing goods internationally. Disputes over HTS classification can lead to unexpected duties and delays.
Why it matters
The HTS determines the exact tariffs applied to imported goods, influencing the prices you pay and the profitability of companies importing products.
Reviewed under editorial standardsUpdated September 26, 2026Not investment advice