An HS code (Harmonized System code) is an international classification system used to identify products for customs and tariff purposes. It uses a 6-digit base that is extended to 10 digits in the U.S. (HTS).

How many digits are in an HS code?

The international standard uses 6 digits. The U.S. Harmonized Tariff Schedule (HTS) extends this to 8-10 digits for more specific classification.

HS Code (Harmonized System Code)

An HS Code, or Harmonized System Code, is an internationally standardized system of names and numbers to classify traded products. The system is maintained by the World Customs Organization (WCO) and is used by more than 200 countries. In the United States, the system is extended to 10 digits and is known as the HTS (Harmonized Tariff Schedule).

Structure

2 digits: Chapter (e.g., 84 = Machinery)
4 digits: Heading (e.g., 8471 = Data processing machines)
6 digits: Subheading (internationally harmonized)
8-10 digits: National subdivision (U.S.-specific)

Why It Matters

Every imported product must be classified with an HS code for customs purposes. The code determines the applicable duty rate, whether any special tariffs apply (Section 301, reciprocal tariffs, etc.), and any import restrictions.

HS Code (Harmonized System Code)

Structure

Why It Matters

What is an HS code?

How many digits are in an HS code?

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