The legal forms of financial institutions (commercial banks, savings banks and cooperative banks) present three different forms of ownership; a priori it implicates different strategies, governance and also results and performance. It is a challenge to establish not only how to define the social and economic banking efficiency, but also if these efficiencies are different according to the typology of financial institutions.
An exploratory descriptive analysis is necessary, in relation to all financial institutions in the European Union (EU-15). It will show the differentiation of the banking typologies (commercial, savings and cooperative banks) in relation to a specific country; the banking size will be monitored too.