tariff quota system
A trade policy mechanism that applies a lower tariff rate up to a certain import quantity, and a higher rate beyond that quota. Used in economics and trade policy contexts.
Japan has introduced a tariff quota system for beef imports.
関税 is a general term for customs duty or tariff, while 関税割当制 refers specifically to the quota-based tariff system.
Compound of 関税 (tariff) + 割当 (allotment, quota) + 制 (system). The term is a direct translation of the English 'tariff quota system'.