Monetary autonomy refers to the independence of a country’s central bank to affect its own money supply and conditions in its domestic economy. In a floating exchange rate system, a central bank is free to control the money supply. It can raise the money supply when it wishes to lower domestic interest rates to spur investment and economic growth. By doing so it may also be able to reduce a rising unemployment rate. Alternatively, it can lower the money supply, to raise interest rates and to try to choke off excessive growth and a rising inflation rate. With monetary autonomy, monetary policy is an available tool the government can use to control the performance of the domestic economy. This offers a second lever of control, beyond fiscal policy.