The tariff charged on trade with non-members by all countries in a customs union or common market. When used with capitals, Common External Tariff (CET) normally refers to the external tariff of the European Union (EU).

• strategic trade retaliation
• strategy
• strengthening of a currency
• strike
• strike ballot
• strike price
• Structural Funds
• structural transformation
• structural unemployment
• structure, market
• study, work
• stylized facts
• subcontracting
• subsidiarity
• subsidiary
• subsidization, cross-
• subsidized credit
• subsidy
• subsistence level
• subsistence wages
• substitute
• substitution
• substitution effect
• sufficient conditions
• summation