What is an HS code?

Every product that crosses a border is classified. The HS code is how customs knows what it is, which duty rate applies and whether any rules or restrictions attach to it.

Why HS codes matter

The code usually decides how much duty is charged on the goods and which import rules apply. A wrong code can cause delays, extra charges or questions from customs. Many export documents, such as the commercial invoice, carry the code.

For a seller, a buyer often asks for the code before ordering, so they can check duties. Having it on file saves a back-and-forth. It also feeds your landed cost.

How an HS code is built

The system is maintained by the World Customs Organization. The structure is layered:

• Digits 1 and 2: the chapter, a broad category such as plastics.
• Digits 3 and 4: the heading, a narrower group within the chapter.
• Digits 5 and 6: the subheading, the most specific level that is the same in every country using the system.

Beyond six digits, each country or trading bloc adds its own extension, commonly to 8 or 10 digits, for national duty rates and statistics. So a code that is right for exporting from one country may need extra digits for importing into another.

This is a general explanation, not customs advice. Classification can be a judgement call, so check with a customs broker or the authority in your market for anything important.

How to find the right code

1. Describe the product exactly: what it is made of, what it is for, its form.
2. Search the official tariff of the importing country, and read the chapter notes.
3. Ask the supplier or manufacturer, who may already have a code for the product.
4. Confirm with a broker or customs authority when the answer is not clear.
5. Record it against the product so it is used the same way each time.

An example from product sales

Say a distributor sells a polymer resin and a plastic film. The resin falls in the plastics chapter at one heading and the film at another, so they have different six-digit codes and may attract different duty. The rep stores each code in a custom field on the product. When a buyer abroad asks for the codes with a quote, the rep sends them in minutes, and the buyer can check duties before agreeing.

Related terms

• Landed cost: duties based on the HS code are one part of it.
• Incoterms: decide who clears goods through customs.
• Pro forma invoice: often shows the code in export paperwork.
• Certificate of analysis: another document that may travel with the goods.

How PromptLab handles it

Your products live in PromptLab's product catalogue. Add a custom field for the HS code on your products, and anyone who quotes a product can find its code. Classification paperwork can sit in the Files tab on the account.

Frequently asked questions

How many digits is an HS code?

The international standard is six digits. Countries extend it, often to 8 or 10 digits, for their own tariffs and statistics.

Who sets HS codes?

The World Customs Organization maintains the Harmonized System, and it is revised periodically. National customs authorities apply it and add their own extensions.

Is the HS code the same in every country?

The first six digits are. After that, each country can add digits, so the full code can differ between the exporting and importing country.

Where do I find the HS code for my product?

Search the official tariff of the importing country, ask your supplier, or use a customs broker. Describe the product exactly, because the material and use often decide the heading.

Does the HS code decide the duty?

It is the main input. The duty rate also depends on the destination, the origin and any trade agreement that applies, so the code alone does not give the final figure.