This master’s thesis evaluates whether at all and at what level the Czech republic and Sweden meet the Maastricht criteria, because this is a necessary condition for adopting the single currency euro. The theoretical part of this thesis will be focused at theoretical basis, which means the European Union and its history, monetary union and individual convergence criteria. Analysis of actual situation of meeting the Maastricht criteria and analysis of preparedness medium and large business to adopt the single currency of the euro will be realized in next part of this thesis.