The subject of research in this paper is the impact of the introduction of the euro on the citizens of the Republic of Croatia. The paper will provide insight into the positive and negative aspects of the introduction of the euro in general, as well as insight and analysis of the direct impact on citizens. Also, a survey of citizens' attitudes, expectations and opinions was conducted. The aim of the research is, based on a detailed analysis, to assess the benefits and costs of introducing the euro as the national currency for the citizens of the Republic of Croatia. The aim was also to explore the attitudes, expectations and opinions of citizens about the introduction of the euro as a national currency. The goals of the research were achieved by answering the research questions. The analysis uses publications published by national bodies, as well as European Union bodies - strategies, legislative framework, recommendations and the like. The primary source of work is a survey conducted by surveying the general population, citizens of the Republic of Croatia during March and April 2022, and the survey was attended by 200 respondents, adult citizens of the Republic of Croatia. The results of the survey indicate that Croatian citizens support the introduction of the euro as a national currency and expect positive effects. Regarding the negative effects, Croatian citizens are of the opinion that prices will rise.