Quantitative easing is a policy employed by the US in recent times. What is it and why has it been employed by the US? What are the advantages and disadvantages of quantititive easing? Solution Quantitative easing is a type of monetary policy that is being executed by central bank when standard monetary policy has become ineffective. In such policy, central bank purchases government securities or other securities from the market in order to lower interest rates and increase the money supply. It increases money supply and promote lending and liquidity. It is considered when short-term interest rates are at or approaching zero, and does not involve the printing of new banknotes. On November 25, 2008, the Fed announced it would purchase $800 billion in bank debt, U.S. Treasury notes and mortgage-backed securities (MBS) from member banks. The Fed created quantitative easing to combat the financial crisis of 2008. The crise was the worst economic disaster since theGreat Depression of 1929. It led to great recession. Becasue of which people were left unemployed, output was low, purchasing power was less. This influences the US economy to implement quantitaive easing. Advantages: Disadvantages:.