This document is a letter from Greek Finance Minister George Papaconstantinou to the heads of the IMF, European Commission, and European Central Bank dated February 28, 2011 outlining additional austerity measures that Greece plans to implement. It acknowledges that Greece met its 2010 deficit reduction target but missed other targets. It details an ambitious schedule of further fiscal consolidation measures and reforms to strengthen budget implementation and revenue administration. The letter represents a binding commitment by Greece in exchange for disbursement of the 4th bailout tranche.