Monetary policy continued to be exceptionally accommodative, with many authorities easing or delaying tightening. For some central banks, the ultra-low policy rate environment was reinforced with large-scale asset purchase programs. In the major advanced economies, central banks pursued significantly divergent policy trajectories, but all remained concerned about the dangers of inflation running well below inflation objectives. In most other economies, inflation rates deviated from targets, being surprisingly low for some and high for others. The deviation of inflation from expected levels and questions surrounding the sources of price changes underscore an incomplete understanding of the inflation process, especially regarding its medium- and long-term drivers. At the same time, signs of growing financial imbalances around the globe highlight the risks of accommodative monetary policies. The persistence of those policies since the crisis casts doubt on the suitability of current monetary policy frameworks and suggests that resolving the tension between price stability and financial stability is the key challenge. This puts a premium on accounting for financial stability concerns much more systematically in monetary policy frameworks.