# customs tariff codes

*Last updated: 2026-06-22*

> Unlike purely national tariff schemes, customs tariff codes rest on an internationally harmonized foundation: the six-digit Harmonized System (HS) administered by the World Customs Organization (WCO), which underpins goods classification across most trading nations.

Unlike purely national tariff schemes, customs tariff codes rest on an internationally harmonized foundation: the six-digit Harmonized System (HS) administered by the World Customs Organization (WCO), which underpins goods classification across most trading nations. The EU extends this to eight digits for the Combined Nomenclature (CN), while the TARIC system adds further subdivisions for trade policy measures. Each additional digit narrows the classification – from broad product group through material composition and degree of processing down to specific functional attributes. The assigned code governs not only the applicable duty rate but also import prohibitions, quota eligibility, anti-dumping measures, and statistical reporting obligations. Incorrect code assignment remains one of the most common triggers for post-clearance duty recovery in day-to-day forwarding practice.

**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 | customs tariff codes |
| Language | EN |
| Word count | 120 |
| Last updated | 2026-06-22 |
| Source | https://www.wcoomd.org/en/topics/nomenclature/overview/what-is-the-harmonized-system.aspx |

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