- Pegged exchange rate system: the value of the currency is tied to another currency, to a basket of currencies or to the price of gold. The purpose of a fixed exchange rate system is to maintain a country's currency value within a very narrow band.
- Semi-pegged exchange rate system: the central bank periodically readjusts the fixed (pegged) value of its currency.
- Floating exchange rate system: the value of a currency changes freely and is determined by supply and demand in the Forex market.
- Multiple exchange rate system: both systems are simultaneously used in different segments of the economy.