This research project aims to study the impact of microfinance and human and social capital on the development of new businesses and self-employed entrepreneurs with limited resources, in order to identify factors of entrepreneurial success. Our project focuses on three important aspects of entrepreneurial success: start-up financing, social capital and gender. We will focus on the context of new micro-enterprises and self-employed entrepreneurs to study the following three themes: (i) The impact of micro-credit financing on the survival and development of new micro-enterprises. (ii) The impact of social capital on the survival and development of new micro-enterprises. (iii) The impact of gender inequalities on the survival and development of new micro-enterprises. SINE (System of information on New Enterprises) data will enable us to include a temporal dimension in our analysis through several waves of data collection.