GlossaryEN1 min readUpdated: Jun 18, 2026

eight-digit tariff number

At the point of EU customs clearance, the eight-digit tariff number is the operative classification tool: built on the six-digit international Harmonized System (HS) code, it gains two additional EU-specific digits to form the Combined Nomenclature (CN) code.

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Last updated: 18 June 2026Published: 27 January 2026

Source: https://taxation-customs.ec.europa.eu/customs-4/calculation-customs-duties/customs-tariff_en

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Definition & Explanation

At the point of EU customs clearance, the eight-digit tariff number is the operative classification tool: built on the six-digit international Harmonized System (HS) code, it gains two additional EU-specific digits to form the Combined Nomenclature (CN) code. Those eight digits define the applicable duty rate, preferential treatment under trade agreements, and the rules of origin that must be met. For importers and exporters, correct CN classification is mandatory – a misclassification can trigger additional duty assessments, clearance delays, or penalties. Legal certainty is available through a Binding Tariff Information (BTI) ruling issued by the competent customs authority.

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