ISO Currency Code


DEFINITION of 'ISO Currency Code'

Three-letter alphabetic codes that represent the various currencies used throughout the world. ISO Currency Codes are specified by the International Organization for Standardization (ISO), which provides standards for businesses, governments and societies. They are maintained by the ISO 4217 Maintenance agency: SIX Interbank Clearing Ltd, of Zurich, Switzerland, acts as the ISO 4217 Maintenance Agency on behalf of the ISO and its Swiss member SNV (Swiss Association for Standardization).


ISO currency code standards are periodically updated and published. Examples of ISO currency codes include the three-letter codes for the euro (EUR); U.S. dollar (USD); pound sterling (GBP); Japanese yen (JPY); Australian dollar (AUD); Swiss franc (CHF); and New Zealand dollar (NZD). These codes are used in foreign exchange markets, such as forex and currency futures. Each of the three-letter alphabetic codes have a corresponding three-digit numeric code. For example, the three-digit numeric code for the U.S. dollar (USD) is 840.

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