What is an OCA and how is the economic logic of an OCA satisfied?
In economics, OCA refers to an optimum currency area, also known as an optimal currency region (OCR), is a geographical region wherein a single currency would help in the maximisation of economic welfare and enhancing the macroeconomic performance.
According to the OCA theory, the economic logic that a country which considers membership in a currency union must balance the economic stability loss (which means losing national monetary policy) against the monetary efficiency gain (which means a competitiveness gain due to a fall in the general price level, stimulating the aggregate demand and enhanced exports) of a single currency.
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