What is an HS code?
The Harmonized System (HS) is the international nomenclature for classifying traded goods, maintained by the World Customs Organization (WCO) and used by more than 200 countries and economies. Every product has an HS code, and that code drives the tariff rate, the trade agreement rules, the licensing requirements and the trade statistics that apply to it.
Core principle: The first six digits are global. Each country then adds digits to set its own duty rates and statistics.
How the code is built
| Level | Digits | Example: cotton T-shirts |
|---|---|---|
| Chapter | 2 | 61: knitted or crocheted apparel |
| Heading | 4 | 6109: T-shirts, singlets and other vests |
| Subheading (international HS) | 6 | 6109.10: of cotton |
| EU Combined Nomenclature (CN) | 8 | 6109 10 00 |
| EU TARIC / US HTS | 10 | National detail for duty rates, measures and statistics |
Why classification matters
Duty rates
What it is: Each code has its own duty rate, which can differ widely between similar products.
Why it matters: The wrong code means overpaying, or back-duties and penalties later.
Trade measures
What it is: Anti-dumping duties, quotas and import restrictions are tied to specific codes and origins.
Why it matters: Missing a measure can turn a profitable product into a loss. See trade remedies.
Regulatory checks
What it is: Codes flag goods that need permits, health checks or product-safety controls.
Why it matters: They tell you early which certificates you need.
Preferences
What it is: Rules of origin in trade agreements are written per HS heading.
Why it matters: Correct classification is needed to claim reduced duty.
Tips for getting it right
- Classify on what the product is, its material and its function, not on its marketing name.
- Apply the General Interpretative Rules in order, especially for sets and multi-material goods.
- Check how similar goods have been classified in the EU’s EBTI database or US CBP rulings.
- For important products, secure Binding Tariff Information in the EU or a binding ruling in the US.
- Use the same code on invoices, packing lists and declarations.
HS 2028 is coming
The WCO updates the HS roughly every five years. The next edition, HS 2028, takes effect on 1 January 2028 and adds and deletes hundreds of subheadings. Review your product master data before then, as codes may change even when your products don’t.
Frequently asked questions
How many digits does an HS code have?
Six internationally. The EU uses 8-digit CN codes and 10-digit TARIC codes, and the US uses 10-digit HTS codes.
Is an HS code the same in every country?
The first six digits are the same in all HS countries. The extra national digits and the duty rates differ.
Who is responsible for choosing the HS code?
The importer or declarant. Brokers and suppliers can help, but legal responsibility stays with the importer.
Official sources: EU TARIC · WCO on HS 2028.
