The current international monetary system for about 30 industrialized nations is a
free floating rate system. In this system, currency exchange rates are allowed to
fluctuate in response to market conditions with a minimum of governmental
intervention. Changes in currency demand can be due to trade deficits (i.e., one nation
imports more from another nation than it exports, causing there to be higher relative
demand for the currency of the bigger exporter). It can also be due to capital
movements. For example, if interest rates are relatively high in one country, then
investors might seek to purchase that country’s securities, which increases demand for
that country’s currency. The IMF classifies about 40 more countries as floating because
they have a little more government intervention than free floating currencies.
A few countries, including China, are in the IMF category of “Other Managed
Arrangements” because the currency policy doesn’t fit into any other IMF category.
For example, China has a currency that is pegged to basket of currencies; however,
China doesn’t tell what currencies are in basket. Sometimes China lets the exchange
rate float, sometimes it manages the currency more actively.