# Designation of customs tariff numbers

*Last updated: 2026-06-16*

> Getting the tariff number right is the foundation of any successful customs clearance: the correct classification directly determines the applicable duty rate, whether anti-dumping measures or tariff quotas apply, and what statistical reporting is required.

Getting the tariff number right is the foundation of any successful customs clearance: the correct classification directly determines the applicable duty rate, whether anti-dumping measures or tariff quotas apply, and what statistical reporting is required. Designation of customs tariff numbers refers to the structured classification process by which goods are assigned a position within the Harmonized System (HS), maintained by the World Customs Organization (WCO). In the EU, the TARIC nomenclature adds a further layer covering EU-specific measures such as anti-dumping duties and tariff rate quotas. Customs brokers and freight forwarders carry out this classification based on product description, technical specifications, and intended use, entering the resulting number on the customs declaration, commercial invoice, and packing list. Misclassification leads to duty adjustments, delays, or seizure of goods; systematic errors may constitute customs fraud.

**Source:** [https://www.wcoomd.org/en/topics/nomenclature/overview/what-is-the-harmonized-system.aspx](https://www.wcoomd.org/en/topics/nomenclature/overview/what-is-the-harmonized-system.aspx)

## Quick Facts

| Property | Value |
|---|---|
| Term | Designation of customs tariff numbers |
| Language | EN |
| Word count | 133 |
| Last updated | 2026-06-16 |
| Source | https://www.wcoomd.org/en/topics/nomenclature/overview/what-is-the-harmonized-system.aspx |

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