The diploma thesis focuses on the financial institutions taxation. First part provides the analysis reasons for taxation and against taxation of financial institutions. Taxation of financial institutions in the Czech republic is analysed as well. Next chapter deals with theoretical concept of bank tax from J.M.Keynes and J.Tobina. This chapter is accompanied by the analysis of the bank tax variants. The third chapter topic is about the implementation of the financial transaction tax in the European Union. The end of diploma thesis deals with analysis of the bank tax in Great Britan, Sweden, Brazil and France.