The central bank is responsible for the financial and economic stability of a country. It regulates other banks and formulates monetary policies. As the banker's bank and government's bank, the central bank performs important functions like controlling credit and inflation, managing foreign exchange reserves and public debt, providing liquidity to other banks, and developing financial institutions. The central bank uses tools like interest rates, reserve requirements, open market operations to influence the money supply and achieve its objectives of price stability, full employment and economic growth. International organizations like the IMF and World Bank have influence over central banks, especially in developing countries.