Abstract. The interest in corporate social responsibility has grown considerably and so is the practice of its reporting. The CSR reporting is an output of sustainability accounting. The aim of this study is to determine the factors of corporate social reporting of the banks in Bosnia & Herzegovina, Croatia and Montenegro and to point out the differences between the practices in those countries. The empirical research reveals that very few banks publish the CSR report. Disclosure of CSR on the Internet is associated with the higher value of assets and profits which is statistically confirmed.

Keywords: sustainability accounting, banking industry, corporate social responsibility, legitimacy theory, online reporting.