Customs & Customs Compliance Glossary

Customs terminology can get complicated. This glossary provides simple definitions of common terms related to customs, customs compliance, classification and automation.

Use it as a quick reference whenever you come across an unfamiliar term or want to understand the basics.

Classification

What is an HS Code?

A Harmonized System code is an internationally standardised numerical system used to classify traded goods. The first six digits form the internationally harmonised classification, while countries and customs territories may add further digits for tariff and statistical purposes.

What is a Commodity Code?

A commodity code is the tariff classification assigned to a product for customs purposes. It helps determine duties, taxes, restrictions, licences and other measures applicable to the goods

What does Tariff Classification mean?

Tariff classification is the process of determining the correct commodity or tariff code for goods based on their characteristics, composition, function and other relevant information.

What is Customs Classification?

Customs classification is the process of categorising goods under the applicable customs tariff. Correct classification is essential because it can affect duties, documentation requirements, restrictions and other declaration data.

What is a Harmonized System (HS)?

The Harmonized System is the international nomenclature used as the basis for classifying goods traded across borders.

What is an HS Chapter?

An HS chapter is the two-digit level of the Harmonized System and represents a broad category of goods.

What is HS Heading?

An HS heading is a four-digit classification within an HS chapter.

What is HS Subheading?

An HS subheading is the internationally harmonised six-digit classification level within the Harmonized System. 

What is the Combined Nomenclature (CN)?

The Combined Nomenclature is the EU's system for classifying goods, extending the international six-digit HS classification to eight digits.

What is a TARIC code?
A TARIC code is part of the EU's integrated tariff system and provides additional classification detail used to determine EU customs measures applicable to imported goods.
What is Binding Tariff Information (BTI)?

Binding Tariff Information is an official decision by a customs authority concerning the tariff classification of specific goods.

What is Classification Rationale?

A classification rationale records why a particular commodity code was selected, including the product characteristics and classification rules considered.

What is Product classification?

Product classification is the process of assigning products to the appropriate customs nomenclature so they can be correctly declared when traded internationally.

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Customs Compliance

What is Customs Compliance?
Customs compliance is the process of ensuring that cross-border trade activities meet applicable customs laws, regulations and reporting requirements, including correct classification, valuation, origin and declaration data.
What are Customs Controls?
Customs controls are checks performed by customs authorities to verify that goods and declarations comply with applicable customs requirements.
What is a Customs Audit?
A customs audit is a review of customs transactions, declarations, records and procedures to assess whether an organisation has complied with applicable customs requirements.
What is Customs Risk Management?
Customs risk management is the systematic identification, assessment and mitigation of risks associated with customs activities, such as incorrect classification, origin, valuation or missing documentation.
What is Trade Compliance?
Trade compliance is the broader discipline of ensuring international trade activities comply with customs, sanctions, export controls, licensing and other regulatory requirements.
What does Customs Data Quality mean?
Customs data quality refers to the accuracy, completeness, consistency and reliability of information used to prepare and submit customs declarations.
What is Customs Validation?
Customs validation is the process of checking customs data against defined rules and requirements before or during declaration processing.
What is Compliance By Design?
Compliance by Design is an approach where compliance checks and controls are embedded directly into processes and systems rather than applied only as a final check before submission.
What is an Audit Trail?
An audit trail is a chronological record showing what data, decisions and changes were made during a customs process, by whom or by which system, and when.
What is Explainability?
In customs automation, explainability is the ability to understand why a system produced a recommendation, classification or decision.
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Customs Declarations

What is a Customs Declaration?
A customs declaration is the formal submission of information about goods entering, leaving or moving under a customs procedure. It typically contains information about the goods, parties, value, classification, origin and procedure.
What is an Import Decleration?
An import declaration provides customs authorities with the information required to place imported goods under the appropriate customs procedure.
What is an Export Declaration?
An export declaration provides customs authorities with information about goods being exported from a customs territory.
What is a Customs Declarant?
The declarant is the person or organisation responsible for making a customs declaration in their own name or in whose name a declaration is made.
What is a Customs Broker / Customs Agent?
A customs broker or agent assists businesses with customs formalities such as preparing and submitting declarations. Terminology and legal responsibilities differ between jurisdictions.
What is a Customs Procedure?
A customs procedure determines how goods are treated by customs, such as release for free circulation, export, transit, warehousing or special procedures.
What does Customs Clearance mean?
Customs clearance is the process through which goods and the associated customs information are processed so they can enter, leave or move through a customs territory.
What are Customs Data Elements?
Customs data elements are the individual pieces of structured information required in a customs declaration, such as commodity code, value, origin, parties, procedure and transport information.
What are Supporting Documents?
Supporting documents are records such as invoices, licences, certificates or transport documents used to support information declared to customs.
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Origin, valuation & tariffs

What does Customs Value mean?
Customs value is the value established for customs purposes and is used, among other things, to calculate value-based customs duties and certain taxes. International customs valuation principles are based on the WTO Customs Valuation Agreement.
What is a Transaction Value?
Transaction value is generally the price actually paid or payable for imported goods, subject to applicable conditions and adjustments, and is commonly the primary method of customs valuation.
What is a Country of Origin?
Country of origin identifies where goods are considered to originate under applicable origin rules. It is not necessarily the same as the country from which the goods were shipped.
What is Preferential Origin?
Preferential origin determines whether goods qualify as originating under a trade agreement or preference scheme and may therefore benefit from reduced or zero customs duty.
What is Non-Preferential Origin?
Non-preferential origin determines the economic nationality of goods for customs purposes outside preferential tariff arrangements.
What are Rules of Origin?
Rules of origin are the criteria used to determine the origin of goods. Under preferential agreements, they determine whether goods qualify for preferential tariff treatment.
What is Proof of Origin?
Proof of origin is documentation or other permitted evidence supporting a claim about the origin of goods. The exact form depends on the applicable trade arrangement.
What is Customs Duty?
Customs duty is a tax that may be charged when goods cross a customs border. The amount can depend on factors including classification, customs value and origin.
What is a Tariff Measure?
A tariff measure is a requirement, duty, restriction, preference or other rule associated with a particular tariff classification and trade movement.
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Automation & AI

What is Customs Automation?
Customs automation is the use of software to automate or assist tasks involved in preparing, validating, processing and submitting customs declarations
What is Customs Declaration Automation?

Customaite is a customs decleration automation. Customs declaration automation uses software to transform shipment and trade data into declaration-ready information, reducing repetitive manual work while maintaining appropriate controls and human oversight.

What is AI for Customs?

AI for customs refers to the use of artificial intelligence to support customs-related activities such as document processing, data extraction, classification, validation and compliance checks.

What is AI Customs Classification?

AI customs classification uses artificial intelligence to analyse product information and assist users in identifying potentially applicable tariff classifications.

Automated HS Code Classification

Automated HS code classification uses software to analyse product information and propose or determine relevant HS classifications according to defined workflows and controls.

What is Customs Document Automation?

Customs document automation uses technology to extract, structure and validate information from invoices, packing lists and other documents used in customs processes.

What is Customs Data Extraction?

Customs data extraction is the process of converting information contained in trade documents, emails or other sources into structured data that can be used in customs workflows.

What are Customs Validation Rules?

Customs validation rules are automated or manual checks used to identify missing, inconsistent or potentially incorrect customs data before submission.

What does Human in the Loop (HITL) mean?

Human in the Loop is an automation approach in which people remain involved in reviewing, validating or correcting system-generated outputs, particularly where judgement or compliance responsibility is required.

What is Straight-Through Processing (STP)?

Straight-through processing is the automated processing of transactions from intake through subsequent workflow steps with minimal manual intervention, where predefined conditions and controls are satisfied.

What is Customs API?

A customs API enables systems to exchange customs-related information programmatically, for example between ERP, customs preparation and declaration systems.

What does a Customs Software Integration do?
Customs software integration connects customs workflows with ERP, TMS, declaration, document management or other systems so information can move between them without repeated manual entry.
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