While it isn’t necessarily the most important central bank, all of the global central banks are important to maintaining financial stability, the most influential central bank is the US Federal Reserve Bank. As the largest economy in the world, and with the US dollar being the world’s reserve currency, any monetary policy in the US has an impact on most of the countries of the world. The two other most influential central banks are the European Central Bank and the People’s Bank of China. Together these three central banks manage the monetary policy of over half the world’s GDP.