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General information

About the World Customs Organization

What is the WCO?

The Customs Co-operation Council (CCC), now known as the World Customs Organization (WCO), was established in 1952. Today, the WCO represents 183 Customs administrations across six regions worldwide that collectively process approximately 98% of world trade. As the global centre of Customs expertise, the WCO is the only international organization with competence in Customs matters and can rightly call itself the voice of the international Customs community.

The World Customs Organization develops international standards, fosters cooperation and builds capacity to facilitate legitimate trade, to secure a fair revenue collection and to protect society, providing leadership, guidance and support to Customs administrations.

What is the WCO Publications and Data Solutions Service?

The Publications and Data Solutions Service of the World Customs Organization provides standards, primarily in English and French, on categorizing goods and rules governing the trade in these goods worldwide. Linked directly with the WCO’s decision-making bodies, only the Publications and Data Solutions Service is authorized to produce and circulate these official rules.

In order to meet all kinds of needs, our content is available in different formats and media, both offline (books, binders, CD-ROMs) and online (databases, structured content, application programming interface). You can find these items on our e-commerce site at wcoomdpublications.org or in our online database at wcotradetools.org.

Bookshop platform

The new wcoomdpublications.org interface, also called the Bookshop.

About WCO Trade Tools

What is wcotradetools.org?

Wcotradetools.org is a platform set up by the WCO that hosts the three main international Customs standards: the Harmonized System, Origin and Valuation. Alongside these Customs standards, the platform provides legal texts, such as the Revised Kyoto Convention, accompanied by its Annexes and Guidelines – explanatory texts clarifying the provisions and setting out some of the measures that can be followed in implementing the Convention.

In addition to the latest updated versions and their history, the site offers many different functionalities and services, such as the HS correlation tables, a cross-referenced search for HS codes in trade agreements and the option to add notes and comments for yourself or a user group.

In which languages are the services and products available?

The platform as a whole and some content are available in the WCO’s two official languages, English and French. Most of the content is also available in Spanish, and there is some content in Russian and Italian. (Some editions of the Harmonized System prior to 2017 are available in all five languages.)

If you want to change the language, you will find a dropdown list in the menu (top right-hand side of the page).

How to change the website language

To change the language more specifically in the Harmonized System, you can change the selection directly on the introductory page for the nomenclature.

How to change the HS language

What information on tariff and trade affairs will I find?

The WCO’s Publications and Data Solutions Service produces and circulates the Customs Rules of Origin, Customs Valuation Rules and the Harmonized Commodity Description and Coding System or Harmonized System (HS):

  • The Harmonized System is a means of designating products with the same code worldwide. It consists of a Nomenclature, Explanatory Notes and Classification Opinions.
  • The Origin platform includes more than 260 international agreements with their preferential rules, including their rules of origin and the ability to browse their PSRs (Product Specific Rules).
  • The Valuation Rules ensure that the WTO Customs Valuation Agreement is interpreted and applied in a uniform manner.

The Publications Service guarantees that these rules, which lie at the heart of trade, are authoritative and keeps them up to date. The main international conventions (Kyoto, Istanbul) can also be consulted.

About Customs rules and standards

Who are the WCO Customs rules meant for?

The World Customs Organization’s Customs standards and procedures apply across a huge value chain and a wide range of stakeholders in international trade:

  • goods manufacturers and industrial producers, to help them to define their import needs and assess their export trade capacities;
  • wholesalers, importers and exporters;
  • Customs brokers, experts in Customs formalities;
  • specialist legal advisers;
  • international carriers and logisticians;
  • intergovernmental and international organizations, on the basis of trade agreements and arrangements;
  • States and their administrations responsible for supervising trade in goods, compliance with the rules, Customs formalities and recovery of Customs duties;
  • training bodies in this sector.

What are the customs "standards"? 

Customs “Standards” (HS, Origin and Valuation) are essential components of the trading system and are used by Customs around the world. The WCO, as the only international organization bringing together national Customs administrations, plays a major role in setting these customs standards and in ensuring common interpretation thereof.

What is the HS, the Harmonized System? 

The Harmonized Commodity Description and Coding System, generally referred to as the "Harmonized System" or simply the "HS", is a multipurpose international product nomenclature developed by the WCO, in the early 1970’s, to classify traded products. Since then, the HS has become the universal economic language essential to the fluidity of international trade. Used by more than 200 countries the system enables the classification of over 98% of merchandise in international trade.

The HS is made up of information at multiple levels. It comprises 21 Sections, which are subdivided into 97 Chapters. These are further split into approximately 1,300 headings and over 5,000 subheadings, classifying more than 5000 group of commodities. Each subheading is identified by a six-digit code, arranged in a legal and logical structure, and is supported by well-defined rules to achieve uniform classification. This structure, called the Nomenclature, is freely accessible on the WCO’s platform. Every five years, a new version of the Nomenclature is published, featuring new commodities. The last edition was issued in 2017 and the next one is planned for 2022.

What is Origin ? 

The WCO defines rules of origin as "the specific provisions applied by a country to determine the origin of goods and using principles established by national legislation or international agreements." (Revised Kyoto Convention). In parallel with customs classification and assessment, country of origin determination is an essential element in determining the amounts of customs duties and taxes.

There is no international definition of origin, although a distinction is made between two systems: preferential and non-preferential. In the case of preferential Origin, everything is based on bilateral or multilateral agreements (free-trade agreements (FTAs), Customs unions, free-trade areas, etc.) or unilateral non-reciprocal preferential arrangements (GSP, etc.). In the case of non-preferential Origin, each country applies its own rules, even if they can be harmonized within some regional economic unions.

What is Valuation ?

Determining the customs value of imported goods is essential to the application and calculation of customs tariffs. All customs administrations of the current WTO Members value imported goods in accordance with the provisions of the WTO Customs Assessment Agreement (including the former GATT Article VII and Tokyo Round Valuation Code), adopted in 1994. The Agreement essentially bases the customs value on the transaction value of imported goods, i.e., the price paid or payable for imported goods, if any, after certain costs and fees adjustments. 90% of trade is valued on the basis of the transaction value method. The Agreement is intended to provide a single, fair, uniform and neutral customs valuation system for imported goods.


About your First connection

Former user but first connection to the new services

You are / were a user of the previous bookshop or our former databases and you try to connect for the first time to this new platform but your credentials do not work? For safety reasons when your account details were migrated on the new websites, your password has not been transferred. Thus, in order to access your account and your subscription, you are required to define a new password.
To do so, please follow these steps:

  1. Click on: Sign in,then Connect

  2. Click on: Forgotten password

  3. Insert your username

  4. You will receive an email, follow the link to redefine your password

If a problem arises, we remain at your disposal on the contact page available in the footer.


Tools and Content

Acerca de la herramienta Comparación

Qué es:

La herramienta de comparación es una nueva herramienta que le permite mostrar dos partes de la nomenclatura del Sistema Armonizado, una al lado de la otra, en su pantalla. Estas dos partes pueden ser de diferentes capítulos, secciones, subsecciones, ediciones e idiomas, entre todos los contenidos del SA. Explore e identifique las diferencias y sutilezas del SA.

Cómo utilizarla:

Para usarla, simplemente seleccione las partes en su nivel, directamente en la nomenclatura y elija la funcionalidad Comparar a la izquierda de la pantalla. Puede seleccionar varios contenidos "agregándolos al carrito de comparación". Cuando haya seleccionado sus artículos, confirme y acceda a la pantalla de presentación de la comparación. En esta pantalla podrá cambiar el idioma, la edición y ajustar la precisión de su búsqueda.

How to use the comparison tool

Vea en Youtube:

About the Correlation Tables

What is the Correlation Tables:

This tool allows you to retrace the history of a sub-heading and its evolution over the course of the several editions of the HS. Browse through the different editions of the Harmonized System to better identify the evolution of the HS code corresponding to your product.

How to access it: 


About your personal workspace

You now have a personal workspace available directly on the WCO platform when you log in. This workspace allows you to store, comment, classify and organize the database information that is essential to you and to quickly access it from the tabs: my tags, my comments and my folders.

In the nomenclature you can access it from every section, chapters, sub-heading and so forth, as well as for Legal notes, Explanatory notes and Classification Opinions. 

How to access tags, comments and folders functionnalities

How to use this feature? 

When you identify a piece of content of the HS nomenclature as informative and essential for one of your customers or yourself, you can directly save it under a Tag, such as #Client1 in order to find it easily when you work for this same customer. You can decide to classify the content according to themes that are specific to your current work. No need to search for the precise sub-heading in the nomenclature, simply access your tags from your personal space or the home page.

You can also write comments under a specific content of the nomenclature. This comment will then be readable each time you access the same content, you can also access it directly from your personal space or the home page.

how to access personal workspace

If you are part of a team you can also choose to share your notes with your teammates. If you would like to know more about this feature please go to the "My subscription" section of the FAQ and click on the question: "I have a multi-user account". 

Navigate the Harmonized System

Where can I find the Classification Opinions?

Classification Opinions are displayed in the Nomenclature at the digit level they refer to. The majority of Classification Opinions are available at sub-heading levels such as 2209.00, 2208.90, 3824.99, 7326.90. In order to see most of the COs you need to reach a six digit level.
However, unlike the previous database, you can also find Classification Opinions at section and chapter levels for the sections XVI & XVII and for the chapter 55.
These changes introduced on the new platform seek to better mimic the paper version of the Nomenclature and be technically closer to the original content.

How to search through the HS Nomenclature

Basic search

The search engine offers the possibility to conduct a search through the Nomenclature. To do so you can enter a keyword or a HS code, this is a basic feature that will then display all the mentions of the word or digit within the Nomenclature.

For instance looking for “meat” results in 82 mentions of the word in any part of the Nomenclature either a Section, Subheading or Explanatory Note etc. The part where the results come from will be mentioned in the result line when you consult the 82 mentions of meat. If you look for 29.34, eight results will be displayed, meaning that this digit appears 8 times in the Nomenclature. You can also combine the two of them and look at the same time for “meat” and “29.34”, only one result will be displayed and refers to : meat peptones

Depending on what you are looking for you can combine keywords and digits. You can also search using several words at the same time like meat and duck.

Advanced search : look within a specific content

If you want to conduct a more thorough search you can use the Advanced search functionality. It allows the user to refine his/her result by specifically targeting certain parts and content of the nomenclature.

To do so, click on the cross to open the Advanced search panel.

1. This field allows the user to select the part of the nomenclature that he wants to target in his search (when selecting: Section, chapter, heading, subheading
Or Search for a particular type of content within the Harmonized System (when selecting: Legal notes, Explanatory notes, Classification Opinions
Or Select specific content in corresponding tables (when selecting INN and CAS number

@hsnomenclature (this will search in all titles (section, chapter, heading, sub-heading) AND in legal notes BUT NOT in CO, EN.

2. You can type in keywords to look for, in this space

3. Boolean connector allow the user to add a new line of criteria by selecting : And, Or, Not

You can also adjust the Year and the language of the edition you are looking for.

For example to look for a keyword or a digit in an Explanatory Notes type in : @explanatorynotes meat  or @explanatorynotes 2504

Searching for CAS or INN

When searching for CAS or INN, use the advanced functionality or type in @cas or @inn and then type the name or number you are looking for. For instance : @cas 1372784-20-7 ;all numbers and hyphens must be written down

Or @inn cinhyaluronate sodium

Around 4500 CAS and INN are referenced in our Database, if you do not find the one you are looking for it means that it has been processed by WCO. We advise you to contact your country’s customs to get more information.



My subscription

Trial period & Member's benefits

Is it possible to try out the services offered?

You can choose any of our subscriptions and try it out for a limited period.

Once your trial period is over, your personal notes are retained on our servers for a period of six months. If you would like to retrieve them, you will need to reactivate your account by taking out a subscription.

I belong to a Customs administration that is a WCO Member. Does this give me any benefits?

When you set up your account on one of the WCO platforms (Bookshop or WCO Trade Tools), you will be identified by our systems as a member of a Customs administration, and as such you will be eligible for lower prices for the content and services available on our platforms.

Upgrade or extend your current subscription

I want to have access to more content and services before my subscription expires.

To add new content to your subscription, go into your private account under the heading “My subscription” and click on the “Change my subscription” button. Then follow the instructions and select the option with the content you would like to add to your current subscription.

I want to extend my subscription.

To extend your subscription, please log into your profile on the platform and click on “My subscription”. You can simply renew your current subscription pack or opt to add additional content to your subscription (unless you already have a full pack).

Another way to extend your subscription is to go into the “Pricing” page from the menu at the top of the screen. Again, you can continue with your current subscription pack or select another option for additional content.

Access the pricing page

[ ! ] Please note that the prices you see in the pricing page are calculated based on a prorata temporis formula. Meaning that if you upgrade your current subscription, the price will be adjusted to the remaining days of your subscription. This is valid if you are currently logged-in.

I have a multi-user account

There are several of us with a subscription and we would like to set up a group. How do we do this?

To put together a working group on the platform, you need to set up an account and take out a single multi-user subscription with the desired number of users. The administrator of the multi-user account can then invite as many members as there are places available under the subscription fee. All you have to do is enter the relevant e‑mail address and confirm the invitation. Those invited will receive an e‑mail inviting them to join the team on the platform.

  • If invitees do not yet have an account, they simply need to create one by clicking on the registration link in the e‑mail. It will not then be necessary to take out a subscription: access to the content and functionalities will have already been arranged by the team manager.
  • If invitees currently have an account and a subscription, they will be asked to confirm the transfer from one subscription to another. This means that they will not be able to take advantage of the access provided in their initial subscription pack, which will end on the date specified when new the subscription is taken out.

How do you add a new user to a multi-user account?

To add a new user to your multi-user account, you must be the team manager. If not, you will not be able to add anyone to the team.

  • If you are the team manager, you must first log into your personal profile and go into the “My team” section. You can then check at the bottom of the list how many places are available for new users in the subscription pack.
  • If there are none, please change to a different subscription fee and increase the number of users you would like to have in your team. To do this, click on the link in the purple banner. Please note that increasing the number of people in your team will lead to an increase in your subscription fee.
  • If you have an available place in your subscription pack, click on the “Add team member” button below the list. Enter the e‑mail address of the person you want to add to the team and confirm it. An invitation e‑mail will be sent.

A green line will appear in the “My team” table, showing a summary of the invitation. This gives the date on which the invitation was sent, the addressee’s e‑mail address and a rubbish bin icon so that you can cancel the invitation if you wish.

How do you remove a user from your multi-user account?

To remove someone from your multi-user account, you must be the team manager. If not, you will not be able to remove anyone from the team.

If you are the team manager, go into the “My team” section in your personal profile. Then, in the list, select the person you want to remove, click on the rubbish bin and confirm the removal of the person from your team. If you confirm this, the person will be permanently removed from the team and will no longer have access to the shared documents, tags and files. This will make a new place available in your subscription pack.

How do you change the team manager of a multi-user account?

Only the team manager can change the person responsible for managing a multi-user account. To do this, go into the “My team” section in your personal profile. From your account, alongside your name, click on the “Change the team manager” button. A window should pop up on your screen where you can select the new team manager from your team. Click on the team member, click on the “Select” button and, to complete the process, confirm the new team manager.

Can everyone in my group see my remarks and comments?

If you choose to share a comment with your team, all the team members will have access to it and be able to see it and respond to it. No distinction is made between the members of the team. However, if you do not wish to share your comments, you must simply ensure that the “Share with my team” box is unticked.


About my account

How can I modify my email?

To receive your invoices and other documents regarding your account on another email address, you can change your email in your personal space. First of all, log in to your account and click on your personal space (Hello button). Then go to your Profile, on this page you can edit your personal information. To do so, click on the following button on the top right:
Enter your new email and save your changes. Your email is now the one indicated on your profile page.

How to access my subscription details?

If you wish to see the details of your subscription, please log in to your account, then click on your personal space.
Finally click on My subscription, you will arrive on the page with the details of your subscription: starting and ending date, periodicity etc.

Access and privacy

Accessing WCO Trade Tools and its content

Are there any technical constraints on access to the content and services?

The WCO Trade Tools platform has been designed to facilitate access to Customs standards on many different media worldwide. Whether you are using a computer, a tablet or a smartphone, there are no constraints on access to the databases and additional documents. An Internet connection is all you need for access to the content. The platform is compatible with the main browsers and operating systems (PC and Mac).

Do I need to register to have access to the services and products?

You can browse wcotradetools.org and consult the Harmonized System Nomenclature without being registered on the platform. However, you will need to subscribe to take full advantage of the content, such as full access to the Explanatory Notes, Legal Notes and Classification Opinions and more than 260 trade agreements (Product Specific Rules, Rules of Origin). Subscription also provides access to new functionalities, such as the comparison tool, the historical correlation tables and the personal notes. To subscribe, go to the Pricing page and select the option that best suits your needs.

How to get a subscription


About my personal data

Are my personal data secure?

The WCO Trade Tools platform and the WCO operate a strict policy regarding their users’ private data. We can assure you that the data gathered are used by the WCO only, for transactional and customer relations purposes.

If you would like to know more about the WCO’s policy on user data, cookies and use of this website, you will find further information on the website’s Privacy page.

Do I lose my notes and comments when my subscription expires or if I deregister?

Your personal notes and other documents, such as your files and tags, will remain available on our servers for a period of six months from when your subscription expires or you deregister. After that time, all your personal information will be deleted from our servers. If you would like to retrieve it before it is deleted, please explore the subscription options.

How can I delete my personal data?

If you want your personal data to be removed from the platform, please contact us directly using the form on the “Contact” page. However, and in general, we should like to inform you that the WCO Trade Tools platform and the WCO operate a strict policy regarding their users’ private data. Only transactional data (for your orders) and data necessary for navigation around the platform, as stipulated in the privacy policy document, will be retained.

If you would like to know more about the WCO’s policy on user data, cookies and use of this website, you will find further information on the website’s Privacy page.