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Commodity codes and the customs tariff – how a product becomes a number

The customs tariff explained: what a commodity code is, why the first six digits are the same worldwide, what the two Norwegian digits do, why classification is hard – and what the code actually decides.

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What this covers

What a commodity code is, and who decides it
The HS nomenclature, and the six international digits
The two Norwegian digits at the end
How the tariff is structured
Why classification is harder than it looks
What the code actually decides
The revisions, and why they move goods around

What this covers (cont.)

What to do when you are unsure

Six digits everyone agrees on

A Norwegian commodity code, digit by digit

Digits 1–6: HSInternational. These six are the same in Norway, the EU, China and the US. That is what lets a customs authority in one country understand a declaration from another.
Digit 7National. Typically relates to the duty rate, which is bound in the WTO.
Digit 8National. Covers statistical needs and the needs of, among others, the agriculture and foreign affairs authorities.

That is why a code can look "almost the same" in two countries without being so. The first six match, while the tails part company. The EU uses eight digits in its Combined Nomenclature and ten in the TARIC database, while Norway stops at eight. If you are comparing a Norwegian code with a foreign one, the first six are the ones you can rely on.

Why it is harder than it sounds

Goods do not arrive labelled with their own code. Somebody has to decide which shelf they belong on, and it is rarely obvious.

Questions that decide the code

Question	Why it matters
What is the item made of?	Material often governs which chapter it lands in.
What is it used for?	Function can override material, depending on the rules.
How processed is it?	Raw material, semi-finished and finished goods are different codes.
Is it made up of several things?	Then it must be decided what gives the item its essential character.
Is it fully assembled?	Disassembled goods may be classified as the finished article, or as parts.
Is it a set?	Sets put up for retail sale follow their own rules.

The classic example is an item that can be two things at once. Is a hiking boot with a hard shell footwear or sports equipment? Is a smartwatch a watch or a communication device? The answer follows from the tariff's own interpretation rules and from the notes to the sections and chapters – not from what the item is called in marketing.

What the code actually decides

Many people think the commodity code is only about the duty rate. The duty rate is often the least interesting part.

Four things the code determines

Duty rateWhat has to be paid, and whether a free trade agreement can give a lower rate.
PermitsCertain commodity codes trigger a requirement for a licence or approval before import.
Restrictions and prohibitionsSome codes are tied to sanctions, quotas or import bans.
StatisticsTrade statistics are built from the declarations. A wrong code gives a wrong picture of Norwegian imports and exports.

The second and third points are why a wrong code can be serious even when the duty rate is zero. You can import goods without underpaying a single krone and still have breached a licensing requirement you did not know existed – because the requirement hung on the code, not on the goods.

The responsibility sits with the importer

This is the point that surprises most people, and it is worth stating plainly.

It is whoever imports the goods who is responsible for the classification being correct.

Not the customs authority: Norwegian Customs checks, but does not establish the code for you in advance as a service.
Not the supplier: the code on an invoice from a foreign seller is a starting point, not an answer – it can be right in the country of dispatch and wrong in Norway.
And not the forwarder alone: the forwarder declares on your behalf, but you answer for the information.
The consequence: errors are often found afterwards, on inspection, and then retrospectively.

The revisions

The HS nomenclature does not stand still. It is revised roughly every five years, because goods that did not exist when the last version was written need somewhere to live – and because goods that have become insignificant are merged.

A revision means goods move, even though the goods are the same.

What happens: codes are split, merged or withdrawn. An item that had one number can get another.
Why it causes errors: product catalogues, ERP systems and standing declaration templates contain codes that were correct yesterday.
What it requires: that somebody actually reviews the product range again at each revision. That is rarely anyone's explicit job, which is why it often does not get done.

When you are unsure

What is worth taking with you

That the first six digits are international, and the only ones you can compare across countries.

Key points

The first six digits are international and come from the HS nomenclature.
The last two digits are Norwegian – the seventh relates to the duty rate, the eighth to statistics.
HS is maintained by the World Customs Organization, and the convention dates from 1983.
Classification is the importer's responsibility, not the customs authority's.

Key points (cont.)

The code decides the duty rate, but also whether the goods need a permit or face restrictions.
HS is revised roughly every five years. The next revision applies in the Norwegian tariff from 1 January 2028.

Questions this answers

What is a commodity code?
What is the HS nomenclature?
Why does Norway use eight digits when HS has six?
Who decides which code a product gets?
What does the commodity code decide in practice?
How often does the customs tariff change?

Questions this answers (cont.)

What do I do if I am unsure about the classification?

Sources

Norwegian Customs – The customs tariff and classification
Norwegian Customs – Tariff structure
Norwegian Customs – Finding the right commodity code

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