HS Code (Harmonized System Code)

What Is an HS Code (Harmonized System Code)?

An HS code is a product classification number from the Harmonized Commodity Description and Coding System, maintained by the World Customs Organization. Most countries use the same first six digits to classify goods, then add more digits for national detail. In the United States, the extended version is the Harmonized Tariff Schedule (HTS), which uses ten-digit codes for imports.

How It Works

HS codes are organized from broad to specific:

• Chapter (2 digits): a broad category of goods.
• Heading (4 digits): a group of products within that chapter.
• Subheading (6 digits): a more specific product type, shared internationally.
• National digits: additional digits each country adds for its own tariff and statistical purposes.

Classification depends on what a product is made of, what it does and how it is presented. For example, a cotton t-shirt and a polyester t-shirt may fall under different codes, and a gift set may be classified differently from the individual items inside it. The code is declared on commercial invoices and customs entries.

Why It Matters for Ecommerce Brands

The HS code helps determine the duty rate applied to an import, whether special rules or restrictions apply and how the shipment is reported. Using the wrong code can lead to paying the wrong amount of duty, delays at the border, or penalties. For international brands importing inventory into the US, classification is one of the first steps in estimating landed cost. Because classification can be complex and rules change, brands should work with a licensed customs broker to confirm the correct codes. This is general information, not legal or customs advice.