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Concept
Currency substitution
Summary
Currency substitution is the use of a foreign currency in parallel to or instead of a domestic currency. The process is also known as dollarization or euroization when the foreign currency is the dollar or the euro, respectively.
Currency substitution can be full or partial. Full currency substitution can occur after a major economic crisis, such as in Ecuador, El Salvador, and Zimbabwe. Some small economies, for whom it is impractical to maintain an independent currency, use the currencies of their larger neighbours; for example, Liechtenstein uses the Swiss franc.
Partial currency substitution occurs when residents of a country choose to hold a significant share of their financial assets denominated in a foreign currency. It can also occur as a gradual conversion to full currency substitution; for example, Argentina and Peru were both in the process of converting to the U.S. dollar during the 1990s.
Bretton Woods system
After the gold standard was abandoned at the outbreak of World War I and the Bretton Woods Conference following World War II, some countries sought exchange rate regimes to promote global economic stability, and hence their own prosperity. Countries usually peg their currency to a major convertible currency. "Hard pegs" are exchange rate regimes that demonstrate a stronger commitment to a fixed parity (i.e. currency boards) or relinquish control over their own currency (such as currency unions) while "soft pegs" are more flexible and floating exchange rate regimes. The collapse of "soft" pegs in Southeast Asia and Latin America in the late 1990s led to currency substitution becoming a serious policy issue.
A few cases of full currency substitution prior to 1999 had been the consequence of political and historical factors. In all long-standing currency substitution cases, historical and political reasons have been more influential than an evaluation of the economic effects of currency substitution. Panama adopted the US dollar as legal tender after independence as the result of a constitutional ruling.
Official source
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