The term quantitative easing (QE) describes a form of monetary policy used by central banks to increase the supply of money in an economy when the bank interest rate, discount rate and/or interbank interest rate are either at, or close to, zero. A central bank does this by first crediting its own account with money it has created ex nihilo ("out of nothing").[1] It then purchases financial assets, including government bonds and corporate bonds, from banks and other financial institutions in a process referred to as open market operations. The purchases, by way of account deposits, give banks the excess reserves required for them to create new money by the process of deposit multiplication from increased lending in the fractional reserve banking system.