This book examines the socio-economic impact of Microfinance Institutions (MFIs) in West Bengal, with a focus on their role in promoting financial inclusion and improving the livelihoods of low-income households. Using primary data collected from beneficiaries across selected districts, the study analyses how access to microfinance influences income generation, savings behaviour, employment opportunities, asset creation, and women's empowerment. It also explores the institutional structure, outreach mechanisms, and operational practices of MFIs, highlighting both their achievements and limitations. Through empirical analysis and field-based evidence, the book highlights regional disparities, challenges in implementation, and the realities faced by borrowers at the grassroots level. By integrating theoretical perspectives with practical insights, this work contributes to the understanding of microfinance as a development tool and offers valuable inputs for policymakers, researchers, development practitioners, and institutions working toward inclusive and sustainable socio-economic growth.