Diversification and performance of microfinance institutions: does Islamic microfinance model matter?

Purpose The aim of this study is to investigate the effect of income and geographic diversification on the double bottom line of microfinance institutions (MFIs) in Middle East and North Africa (MENA) countries where conventional and Islamic MFIs coexist. The idea is to explore whether diversification impacts MFIs' financial performance and outreach differ for Islamic microfinance. Design/methodology/approach The authors test the effect of diversification and business models of MFIs on their performance and poverty outreach. The authors’ data set is an unbalanced panel sample of 81 (Islamic and conventional) MFIs in MENA countries covering 1999–2018, comprising 743 MFI-year observations. Findings The authors find that increasing income diversification in microfinance and focusing on rural areas decreases the financial performance of MFIs in MENA countries. Islamic MFIs benefit from income diversification by increasing their financial performance. The results provide evidence of a nonlinear relationship between income diversification and the financial performance of MFIs. Although conventional MFIs improve their depth of outreach by diversifying their income, Islamic MFIs have a lower breadth of outreach because they show a higher degree of income diversification. Practical implications This research contributes to the ongoing debate of whether MFIs should focus on or diversify their services to Islamic microfinance. Therefore, the findings of this study are practically crucial for MFIs' stakeholders to understand the contribution of diversification strategies in improving the Islamic MFIs to achieve both financial and social objectives. Originality/value To the best of the authors’ knowledge, it is the first research that addresses the impact of diversification strategies in Islamic microfinance. Additionally, using a panel data set of conventional and Islamic MFIs in MENA countries spanning 1999–2018, this study provides empirical evidence on the diversification versus focus issue from the microfinance industry and the subset of Islamic microfinance.