The first part of the article concentrates on the implementation of the system reform in the period since the adoption by the European Council Herman Van Rompuy`s report on 13th/14th December 2012 until the creation of organisational foundations for the Banking Union. The second part has been devoted to the work on the reform after publishing on 22 June 2015 what is know as Five President`s Report. In the third part have been discussed at length the consequences of system changes in the euro area for Poland.