In this paper is presented the historical evolution of the euro and the the European and monetary union which represents the structure of joint integration of the European Union countries. In order for member countries to join the European area, it is necessary to fulfill the convergence requirements relating to price stability, public finances, exchange rates and long-term interest rates. Furthermore, a country has to participate in the ERM II for at least two years if it wants to introduce the euro as official currency. Croatia currently fulfills all the criteria except participation within the ERM II. The introduction of the euro brings specific costs, such as losing monetary sovereignty, conversion requirements, but also an increase in price due to the same and others. The introduction of the euro is one of the government’s strategic goals, but polls suggest that citizens do not want the euro as an official currency. There are many positive aspects of introducing the euro, but there are also many disadvantages. It is for citizens to base their analysis on the future of the national currency. The examples of other countries that have introduced the euro in this case, Slovenia and Greece, give us a clear message that the unpreparedness of countries for the introduction of the euro leads to even greater imbalances. Due to the weakness of the economy, there is still lots of space for improvement in Croatia, so the process of introducing the euro should be delayed until further notice.