What is the difference between an HS code and an HTS code?
Updated: 2026-10-14
Short answer
An HS code refers to the international Harmonized System, which standardizes product classification at the six-digit level. An HTS code usually refers to a country's extended tariff classification; in the United States, HTSUS codes provide more detailed import classifications and duty rates. The first six digits align with the international HS structure, while later digits may differ by country.
What is the difference between an HS code and an HTS code?
An HS code refers to the international Harmonized System, which classifies products using a common six-digit structure. An HTS code usually refers to an extended national tariff classification. In the United States, the Harmonized Tariff Schedule of the United States (HTSUS) adds further digits to identify imports in greater detail and determine the applicable tariff treatment.
What is an HS code?
The Harmonized System is maintained by the World Customs Organization. Its internationally harmonized structure uses six digits to identify product categories for customs and trade statistics.
What is an HTS code?
In the United States, HTSUS codes extend the international HS structure with additional digits. The full U.S. classification identifies more detailed import categories and is used to determine tariff rates and customs reporting requirements.
How do the digits differ?
The first six digits are based on the international HS nomenclature. Countries add further digits to meet national tariff and statistical needs, so the full code used in one country may not be valid in another.
Why does the distinction matter?
A six-digit HS code may not be enough for a national customs declaration. Importers must identify the full code required by the destination country and verify the associated duty rate, reporting requirements, and any additional trade measures.
Where should I verify the code?
U.S. Harmonized Tariff Schedule: https://hts.usitc.gov/ | USITC guidance on tariff classification: https://www.usitc.gov/harmonized_tariff_information/frequently_asked_questions
Always classify the actual goods according to the destination country's tariff rules and current nomenclature. If classification remains uncertain, consult a customs professional or request a binding ruling where available.