The aim of the report is to contribute to this debate by developing an impact self-assessment tool for microfinance services providers and an impact enhancement dashboard which would help policy makers identifying what types of microfinance services are the most appropriate to different institutional settings (i.e. type of credit market, labour market, welfare state). The role of this literature review within this project is to provide the foundations allowing us making informed decision when designing – along with our partners – these outputs particularly regarding impact evaluation methods.