HS Tariff Classification, Guide 2026
How to find the correct customs code, distinguish between HS, CN, and TARIC, avoid costly mistakes, and request a binding tariff determination in France.
A single code consisting of just a few digits can cause the cost of an import to vary by several thousand euros, hold up a container at customs, or nullify a hard-won tariff preference. Yet the HS customs tariff classification is all too often treated as a mere administrative formality, delegated to the freight forwarder at the last minute.
Yet it is this system that determines the customs duties, taxes, restrictions, and a large portion of the controls applicable to your goods. This guide explains how the Harmonized System works, how to assign the correct code to your products, how to distinguish between HS, CN, and TARIC, and when to request a binding tariff ruling to ensure the smooth flow of your goods.
What is the HS customs tariff classification?
Definition of the Harmonized System (HS)
The Harmonized System for the Designation and Coding of Goods, commonly known as the HS, is an international nomenclature administered by the World Customs Organization. It classifies all goods traded worldwide according to their nature, composition, function, or intended use.
Assigning an HS code to a product means giving it a customs identity recognized by virtually all government agencies around the world.
The HS code consists of six digits. The first two correspond to the chapter, the next two to the tariff heading, and the last two to the tariff subheading. This international framework is then supplemented by regional or national subdivisions. In the European Union, the Combined Nomenclature (CN) adds two additional digits, and the TARIC integrated tariff adds two more to reflect current trade policy measures.
According to the Directorate General of Customs and Indirect Taxes, the tariff classification of a good determines the applicable taxes as well as the health, technical, and trade regulations to which it is subject. In other words, the code determines the entire customs processing of your shipment, from ad valorem duties to any import licenses that may be required.
HS Code, Combined Nomenclature (CN), and TARIC Code: What Are the Differences?
Confusion between these three levels is the primary source of error for companies just starting to expand internationally. The six-digit HS code is sufficient for communicating with an Asian supplier or for a general estimate. However, it is insufficient for filing a customs declaration in the European Union.
The table below summarizes the three levels of the European Union's customs nomenclature.
| Bill of Materials | Number of digits | Scope | Primary Use |
|---|---|---|---|
| HS Code | 6 | International, World Customs Organization | Common classification system; communication with foreign suppliers and customers |
| CN Code | 8 | European Union | Export Declaration, Statistics, Common Customs Tariff Duties |
| TARIC Code | 10 | European Union | Import Declaration, Specific Tariff and Trade Measures |
In practice, a six-digit HS code provided by a partner outside the European Union cannot be included as is in your declaration. It must be expanded to the eight-digit CN code for exports, and to the TARIC code for imports subject to specific measures: quotas, antidumping measures, or import restrictions.
How do I find a product's customs code, step by step?
The process of finding a tariff code does not begin with a search engine, but with the product itself. Customs authorities base their determinations on the objective characteristics of the goods, not on their trade names. A pair of athletic shoes, a leather bag, or a bottle of perfume may fall under very different tariff codes depending on their composition and degree of processing.
Compile a comprehensive product data sheet
You must be able to describe your merchandise in detail. Photographs and a manufacturer's manual are useful additions to this file.
Identify the product's primary characteristic
The key is to identify the correct chapter. Whether it’s textiles, cosmetics, spare parts, spirits, leather goods, electrical equipment, or composite products, this question immediately points to a specific family of tariff lines.
How to Read a Bill of Materials Systematically
Section and chapter notes are legally binding and explicitly exclude or include certain products. General rules of interpretation—particularly for composite products and assortments—make it possible to resolve conflicts between two competing positions. This comparative analysis distinguishes a defensible classification from a mere approximation.
Bring it down to the European level
Check the applicable subheading, the eight-digit CN code, and then the TARIC code if specific measures apply. To find an HS code online, the official tariff databases of French customs and the European Commission remain the only reliable sources, far ahead of unofficial comparison tools.
Document Your Decision
Keep the technical data sheet, test results, bill of materials screenshots, and internal communications that led to the selection of the code. In the event of an audit, this traceability demonstrates your good faith and due diligence.
Information to Include in the Technical Data Sheet
- Trade Name
- Technical Description
- Primary Function
- Detailed composition by material percentage
- Dimensions and Weight
- Manufacturing Process
- Intended Use
- Packaging
- Accessories included in the shipment
Not sure about the customs code for your products?
Our customs experts will help you classify your goods and ensure the accuracy of your declarations before shipment. Request your free quote.
RTC: How Can You Secure Your Ranking with a Binding Price Report?
When should you request a binding rate quote?
When the classification remains uncertain or the financial stakes are high, a company may request a binding tariff determination. A BTD is a decision issued by a European Union customs authority. It officially establishes the tariff classification of a good, specifying the applicable CN code or TARIC code. French customs authorities state that this document helps ensure the accuracy of your tariff classification and allows you to estimate the applicable duties and taxes.
Applications for BTI in France are submitted online through the European EBTI service (European Binding Tariff Information). The application must include a description detailed enough to identify the product: composition, function, manufacturing process, technical specifications, photos, and, if applicable, samples and related commercial documents. An imprecise application slows down the review process or prevents the authorities from making a decision.
Once issued, the RTC is binding on customs authorities throughout the European Union under the conditions set forth in the regulations. Its maximum validity period, as indicated by French customs, is three years, and it must be included in the customs declaration to take effect. This is a significant advantage for a company that ships the same product line on a regular basis.
Tariff Classification and Country of Origin: Why Should They Never Be Confused?
Many business leaders believe that the customs code determines a product’s origin. That is not true. Tariff classification answers the question: What is the good? Origin answers a different question: Where does it come from economically?
The two concepts overlap, since certain preferential rules of origin are expressed through a change in tariff classification. However, they are based on distinct legal rationales.
A single HS code may cover products of different origins that are subject to widely varying duty rates under the applicable trade agreements.
What are classification errors, and what are their consequences?
The consequences of an incorrect customs classification are rarely trivial, especially when they recur over several years of trade. The tax authorities have the right to reassess and may review past declarations.
Here are the main risks a company faces in the event of an incorrect customs tariff classification.
Insufficient payment
Underreported duties result in a correction, along with late-payment interest and penalties.
Excessive payment
You're eroding your profit margin without even realizing it.
Customs Hold
The goods are being held up, and customs clearance times are getting longer.
Preference or License Under Review
A tariff preference or an import license may be challenged.
Regulatory Noncompliance
Products subject to health or technical inspections, or those classified as hazardous materials, are particularly at risk.
Contract Disputes
Disagreements may arise between the importer, the exporter, and the customs broker.
The Most Common Causes
- Relying solely on the product's brand name
- Reusing old code without checking for annual updates to the bill of materials
- Confusing the HS, CN, and TARIC levels
- Neglecting to check the ingredients on textile or chemical products
- Uncritically adopting code provided by a foreign vendor
- Ignoring the logic specific to composite materials
For recurring imports or exports, the solution is to establish an internal governance framework for customs codes: a centralized product database, a person responsible for the nomenclature, a validation procedure, and periodic reviews. If a shipment has already been held up, our article on packages held at customs details the steps to take.
How Ranking Changes Your Supply Chain: Our Approach
Tariff classification is not merely a matter of reporting; it permeates the entire supply chain. It determines the estimate of the delivered cost, the choice of Incoterm, the preparation of documents, the selection of the customs procedure, the identification of restrictions, and the efficiency of customs clearance.
An importer of cosmetics, spirits, or spare parts who understands these terms in advance can negotiate better purchase prices and avoid unpleasant surprises upon arrival. To learn more about the relationship between terms, value, and delivery conditions, check out our comprehensive guide to Incoterms.
The information required for classification must be provided to your carrier or customs broker well in advance. A vague description such as “parts,” “accessories,” or “samples” does not allow for a reliable declaration and raises red flags for customs authorities.
How Can You Secure Your Customs Codes for the Long Term?
Assigning the correct HS code is a matter of following a method, not relying on intuition: accurately describe the product, apply the general rules of interpretation, check the section and chapter notes, drill down to the CN or TARIC code, document the decision, and request a BTI when the circumstances warrant it.
This process takes just a few hours per product line, whereas correcting an issue could cost several years’ worth of profit margins. If you’d like to have your bill of materials audited or entrust your operations to a partner capable of managing your supply chain from end to end, our experts are available to assist you—simply request a quote.
Frequently Asked Questions
Is the HS code provided by my foreign supplier valid in France?
The first six digits form an international classification system that is generally applicable. However, the responsibility for the reported classification lies with the declarant established in the European Union. You must therefore verify this code and expand it into a CN or TARIC code depending on your transaction.
How long is an RTC issued by French customs valid?
French customs authorities specify a maximum validity period of three years. The RTC must be included in the customs declaration to be enforceable. It may cease to be effective in the event of a change in the applicable regulations.
Is an RTC required for importing?
No, it is not mandatory. It is strongly recommended when the classification is technically complex or when two tariff classifications seem plausible. This is also the case when the difference in duties between two codes represents a significant financial impact on recurring shipments.
What should I do if the nomenclature changes after I've classified it?
The Combined Nomenclature is updated annually. Therefore, an annual review of your product database is necessary. A code that has been deleted or split may cause your subsequent declarations to be noncompliant, even if the product has not changed.
Who is liable in the event of an error—the company or the freight forwarder?
Liability depends on the type of representation chosen—direct or indirect—and on the information provided. In most cases, the importer remains liable for any evaded duties. It is therefore essential that the data regarding the goods provided to your customs broker be accurate.
Have your customs codes reviewed by our experts
Please use the form to describe your products and supply chains. A D&fi Groupe expert will respond to help ensure the accuracy of your tariff classification and customs declarations.