Trade creation happens when countries form a free trade area or customs union, causing production to shift from high-cost domestic sources to lower-cost sources within the member countries. This process generally improves the overall economic welfare of the union.

How it works:

• Partner countries remove or lower tariffs on goods traded between them.
• Consumers and businesses switch from buying expensive local goods to cheaper imports from partner countries.
• Domestic industries that had high production costs lose market share, while efficient industries in partner countries gain it.
• Total supply grows and prices decrease within the trade group.

Welfare effects:

• Consumers enjoy lower prices and a wider variety of products.
• Global efficiency increases because goods are produced in the most cost-effective locations.
• Although governments lose some tariff revenue, the savings for consumers and businesses are usually much larger.

Trade creation is a primary reason why nations form trade blocs, as it shows the benefits of removing trade barriers. It is the opposite of trade diversion.