Microfinance has been used as a tool for social sustainability and development since the 1970s. In microfinance, assessment of social sustainability is often conducted through client impact monitoring. This study explores the impact measurement practices of microcredit organisations in Bosnia and Herzegovina and their use of information systems in this process. We draw on the latest trends of using shared measurement systems for impact monitoring, to point out the potential of using such systems to achieve sustainable impact on wider social issues in Bosnia and Herzegovina. This paper outlines the roles and responsibilities that different stakeholders should play in the system development process. Keywords: microfinance, microcredit, Bosnia and Herzegovina, social impact, information systems, ICT, shared measurement systems.