The dissertation thesis analyzes reasons for the consolidation of the banking sector in the Czech Republic, the shape of the consolidation and impact of the consolidation institution's activities on the performance of the Czech banking sector. The first part of the research deals with the reasons for consolidation, i.e. specificities of the banking sector in the Czechoslovakia before 1989 and the transformation of the banking sector during the 1990s. The factors analyzed significantly influenced the processes of disintermediation, universalization and diversification in commercial banking. The analysis of banking profitability measures, which is the second part of my dissertation thesis, employs those aspects mentioned above. The thesis con...