Loan Portfolio Structure and Financial Performance of Microfinance Institutions in Kenya

Abstract

The financial performance of microfinance institutions is vital to their sustainability and to their ability to promote financial inclusion among low-income groups. Despite their important role in Kenya, many microfinance institutions still face financial challenges that threaten their long-term stability. This study examined how the structure of loan portfolio structure affects the financial performance of microfinance institutions in Kenya. Specifically, it focused on four components: loan portfolio size, diversification, quality, and maturity structure. Guided by theories of financial intermediation and portfolio management, which highlight the importance of efficient resource allocation and management for improving institutional performance, the study employed a quantitative research design using panel data from Kenyan microfinance institutions. Secondary data were collected from the published financial statements of 14 institutions over a 10-year period, yielding 140 observations. Data analysis involved panel-data regression techniques, including pooled ordinary least squares, random-effects, and fixed-effects models. Diagnostic tests, such as the Breusch-Pagan Lagrangean Multiplier test and the Hausman test, were used to select the best-fit model, with results indicating that the fixed-effects model was most appropriate for analyzing the relationships among the variables. The findings indicated that the structure of loan portfolio significantly impacts the financial performance of microfinance institutions in Kenya. All four components, loan portfolio size, diversification, quality, and maturity structure, had positive and statistically significant effects on Return on Assets. Among these, loan portfolio quality had the strongest impact, underscoring that maintaining a high-quality loan portfolio with low non-performing loans is key to increasing profitability. Portfolio diversification also contributed positively by reducing credit risk and stabilizing income, while larger loan portfolios increased interest income and profitability. Proper loan maturity structures improved repayment performance and liquidity management within these institutions. Based on these results, the study concludes that an effective loan portfolio structure is crucial for enhancing the financial performance and sustainability of microfinance institutions in Kenya. It recommends that these institutions strategically expand and diversify their loan portfolios across sectors, strengthen credit risk management to maintain high portfolio quality, and adopt suitable loan maturity structures aligned with borrowers’ repayment capacities. These actions are expected to boost profitability, reduce credit risk, and strengthen the financial stability of microfinance institutions in Kenya.