Social responsibility, in the business context, is the focus of study and attention of companies in various fields of activity. This concern, which is necessary for the promotion of community development, is also a key element in the competitiveness issue among organizations, since it can determine the much sought-after differential in the consumer market. In this way, the present research seeks to know and analyze the main lines of action and directives of work in corporate social responsibility undertaken by companies of the banking sector, considering the actions developed by five banks. Through the analysis of banks' sustainability reports and the search for information in other sources of secondary material, it was observed that the social responsibility actions reside in five main axes of work, arranged in order of importance and volume of investments, namely: access to education; environmental risk management and waste control; support for culture and sport; ethics and corporate transparency and financial inclusion. Each one seeks to influence and produce impacts on different target groups, with the aim of stimulating the development and reduction of the most urgent social inequalities.