The document summarizes a study on client defaults conducted by an MFI operating in Delhi suburbs. Key findings include: - The proportion of defaulter clients to repayment clients was found to be 22%. - Reasons for default included wilful defaults, migration, economic crises, and concealment of information by clients. - Costs of defaults included financial costs shouldered by repayment clients to make up for defaulters' missed payments, as well as transaction costs and hardships. - However, the MFI ensures a 100% repayment rate through strict collection processes and incentives tied to on-time repayment, as well as by closing centers with high defaults.