Group sustainability in the context of credit and finance refers to the ability of a group, such as a Self-Help Group (SHG), Joint Liability Group (JLG), cooperative society, or community-based financial organization, to continue functioning effectively over a long period while maintaining financial stability, member participation, and institutional strength. It is a critical factor in ensuring that collective financial activities generate lasting economic and social benefits. Sustainable groups are capable of mobilizing savings, managing credit efficiently, repaying loans on time, resolving internal conflicts, and adapting to changing economic conditions. The concept of group sustainability is based on the principle that collective efforts are often more effective than individual actions in accessing financial services. Financial institutions are generally more willing to provide credit to organized groups because group members share responsibility, monitor each other's activities, and create social pressure for timely repayment. As a result, the risk of loan default is reduced, making group lending an important strategy in financial inclusion. Financial sustainability is the most significant dimension of group sustainability. A financially sustainable group maintains regular savings, builds a strong corpus fund, manages loans prudently, and generates sufficient income to meet operational expenses. Proper financial planning, transparent accounting, and regular auditing strengthen the financial position of the group. Timely repayment of loans enhances the group's creditworthiness and enables access to larger loans from banks and other financial institutions. Institutional sustainability is equally important. A sustainable group has democratic leadership, clearly defined roles and responsibilities, regular meetings, effective decision-making processes, and transparent governance. Leadership should encourage participation from all members