In order to communicate in one language, all foreign exchange trading recognize and respect have developed over time, international standards and regulations. For example, for the representation of currencies in all transactions entered into in writing, as well as confirmation of their use so-called ISO-codes (ISO - International Organization for Standardization). They are also linked with international payments. Single currency code is composed of three letters: the first two letters denote the country, the third - the currency. These codes will be used later.

• USD - U.S. Dollar
• EUR - International European currency - the euro
• GBP - British Pound Sterling
• CHF - Swiss Franc
• JPY - Japanese Yen
• CAD - Canadian Dollar
• AUD - Australian Dollar