The aim of this thesis is to assess the impact of the introduction of the euro on the Slovak economy during the global economic crisis. The work is divided into three chapters. The first chapter presents short historical development of the euro and the process of integration within the European area, leading to the creation of economic and monetary union. The second chapter presents a technically and administratively demanding process of preparing for the new currency. The progress in the implementation of fiscal and nominal convergence criteria conditioning the membership in the euro area is also evaluated. The third chapter provides an analysis of selected advantages and disadvantages of euro. Compares the forecasts of the National Bank o...