MFN Duty (Most-Favoured-Nation)

The standard duty rate a WTO member applies to imports from any other WTO member, absent a preferential trade agreement. It's the 'default' rate shown in tariff schedules.

MFN duty is the baseline tariff rate shown in EU TARIC, US HTS, and UK Global Tariff. Every product has an MFN rate — it is the rate applied unless a free-trade agreement unlocks a lower preferential rate (subject to rules-of-origin compliance).

The term comes from WTO principles: members must extend the same treatment to all other members. The name is misleading — MFN is in fact the least favourable rate most traders will encounter, because preferential rates under FTAs are lower.

Also searched: most favoured nation rate · most favored nation tariff · mfn tariff

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