A bank merger occurs when two banks combine their resources so that they can operate as one bank in the future. Banks have been able to implement more effective business strategies, diversify their geographic activities, and scale up their operations due to mergers. In India, bank mergers first took place in the 1960s as a strategy to rescue weaker banks while simultaneously safeguarding the interests of customers. The desire to create an Indian bank that can compete with global giants in the post-liberalization period has existed since 1990. As the pillars of our economy, banks are regularly pushed to combine in order to grow internationally and foster peace, which improves the flow of money in our economy. The Indian banking sector is now thought to be expanding quickly and evolving into a vibrant sector. Through mergers and acquisitions, the industry is given a new dimension that has helped banks rise to the top while providing enormous value to shareholders. The merger, which resulted in the consolidation of 27 public sector banks into 12, had as its main goal the establishment of next-generation banks and the eventual realization of a trillion-dollar economy. It is evaluated in this paper by analyzing its impact on the banks' productivity, personnel, and customers.