This document is a report on retail banking business in Bihar with special reference to IDBI Bank. It was submitted as part of an internship program to partially fulfill the requirements for a post-graduate diploma in management. The report provides an overview of IDBI Bank's retail banking business and products. It analyzes the scope for retail banking in Bihar through primary research including surveys and interviews with customers. The report finds that there is significant potential for retail banking growth in Bihar as it is a developing state with demand for banking services still left untapped. It recommends that IDBI Bank continue its expansion strategy in Bihar to take advantage of the business opportunities.