DE

05 Min

17.04.2026
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Using Customs Tariff Numbers Correctly

An incorrect customs tariff number can lead to delays, back payments, and high additional costs. Correct product classification is therefore crucial for a secure and efficient import process.
Aileen Häberle
Aileen Häberle
CEO
Using Customs Tariff Numbers Correctly Grafik

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When importing from Asia, even the smallest details often determine whether the process runs smoothly. One particularly critical point is the correct customs tariff number. Even a single incorrect digit can result in goods being held by customs, incorrect duties being charged, or significant additional costs arising.

Many companies underestimate the importance of this number. Yet it forms the basis for the entire customs classification and regulatory assessment of a product.

 

What is a customs tariff number?

The customs tariff number – also known as the HS code, commodity code, or TARIC code – is used for the clear classification of products in international trade.

Among other things, it determines:

  • The level of import duties

  • Possible anti-dumping measures

  • Import restrictions

  • Statistical reporting

  • Required documentation and inspections

Example: Men's jeans made of cotton

For a classic men's jeans made of cotton denim, the following code may be relevant, for example:

6203 42 35 00

The structure behind it follows a logical system:

First four digits: Product group
6203 refers to clothing and trousers for men or boys.

Digits five and six: Material
42 indicates cotton.

Digits seven and eight: EU product specification
This is where denim fabric, for example, is classified in more detail.

Final digits: TARIC subdivision
This section may include additional measures such as special duties or import regulations.

Why small mistakes can have major consequences

Even a single incorrect digit can shift the product into a different category.

Example:

If a high synthetic fiber content is declared instead of cotton, the tariff classification changes. As a result, different duty rates may apply or additional inspections may be required.

Possible consequences:

  • Duties paid too high or too low
  • Additional claims by authorities
  • Delays during import
  • Fines
  • Goods blocked at the port or warehouse

Especially for growing brands and medium-sized businesses, such mistakes are costly and avoidable.

Why professional verification is essential

Correct classification requires product knowledge, material expertise, and experience with customs systems. Anyone who guesses or simply adopts what a supplier provides is taking unnecessary risks.

Our approach at Kaiserberg Trading

We support our clients throughout the entire supply chain:

  • Supplier sourcing in Asia
  • Product inspection
  • Correct documentation
  • Import processing
  • Logistics to the final destination

This ensures that procurement is not only cost-effective, but also secure and reliable.

Fazit

The customs tariff number is far more than a formality. It determines costs, speed, and legal certainty when importing. Those who handle it correctly save time, money, and avoid unnecessary stress.

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