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Guide

How to find the right customs tariff number for your goods

Updated on 19 July 2026

A customs tariff number identifies goods for customs purposes. It determines duty rates, import VAT, trade measures, and export requirements. The first six digits come from the Harmonized System (HS), the World Customs Organization standard used by more than 200 countries.

Finding the right code means applying the legal texts of the nomenclature, not searching for keywords. This guide explains the code structure, the classification process, and why correct codes matter.

What do the digits of a customs tariff number mean?

A customs tariff number is built in layers. Each layer adds detail to the classification and serves a different declaration purpose in the EU:

  • Digits 1 to 6: the HS code, harmonized worldwide. Digits 1 and 2 are the chapter, 3 and 4 the heading, 5 and 6 the subheading.
  • Digits 7 and 8: the Combined Nomenclature (CN) of the EU. The 8-digit code is used for export declarations and Intrastat reporting.
  • Digits 9 and 10: the TARIC code, which carries EU measures such as duty suspensions, anti-dumping duties, or restrictions. Imports into the EU are declared with at least 10 digits.
  • Digit 11: a national code, in Germany used in ATLAS for national measures such as excise duties.

How to classify goods step by step

Classification follows a defined legal method, not intuition. A defensible determination works through these steps:

  • Establish the objective characteristics of the goods: material, function, composition, and intended use.
  • Apply the General Rules of Interpretation (GRI 1 to 6) in order, starting with the wording of headings and the section and chapter notes.
  • Check the legal notes and, where helpful, the explanatory notes to the HS and CN for guidance on borderline cases.
  • Verify the candidate code in the EU tariff databases (TARIC) or the national tariff to confirm measures and footnotes.
  • Compare with binding tariff information (BTI) issued for similar goods to validate the result.
  • Document the reasoning, the sources, and the decision so the classification survives a customs audit.

Why correct classification matters

The customs tariff number drives almost every downstream customs obligation. A wrong code can mean paying the wrong duty rate, missing an anti-dumping duty, applying the wrong preference, or overlooking a license requirement.

Customs authorities can reclaim underpaid duties retroactively, typically for three years, and errors can lead to fines or criminal exposure. Systematically documented classification decisions are the best protection during audits.

Classifying entire product lists with AI

Manual classification does not scale to catalogs with thousands of items. Zolltarif-Finder classifies complete Excel, CSV, and ERP product lists with an agentic AI workflow that applies the nomenclature texts, the GRI, official references, and approved internal knowledge.

Every proposed code comes with reasoning, cited sources, and a confidence score. Uncertain items are routed to expert review, and every decision is recorded in an audit-ready trail.

Frequently asked questions

What is the difference between HS code, CN code, and TARIC code?

The HS code is the worldwide 6-digit standard. The CN code adds two EU digits for export and statistics (8 digits). The TARIC code adds two more digits for EU import measures (10 digits). In Germany, an 11th national digit can apply on import.

Who is responsible for the correct customs tariff number?

The declarant. Even when a freight forwarder or customs broker files the declaration, the importing or exporting company remains responsible for the correctness of the classification.

How often do customs tariff numbers change?

The EU publishes an updated Combined Nomenclature every year, effective 1 January. The Harmonized System itself is revised roughly every five years. Companies should re-check their classifications against every yearly update.

Is a keyword search enough to find a customs tariff number?

No. Keyword matches ignore the legally binding heading texts, section and chapter notes, and the General Rules of Interpretation. A code is only defensible when it is derived from these legal texts and documented.

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