The diploma thesis deals with non-standard monetary policy in the form of quantitative easing. The theoretical part describes processes such as standard monetary policy, from managing short-term (O/N) rates followed by a series of adjustments that usually affect the real economy. The paper explains why, in specific situations, this mechanism has been frozen in the economies of Japan, the US, the UK and the Eurozone. The analytical part explains how the non-standard monetary policy was implemented in these economies. To quantify these effects, the econometric modeling using an ARDL model explores the effects of quantitative easing on the consumer price index, monetary aggregates, stock index, government bond yield, and unemployment in indivi...