Green banking is the process of banking that is sustainable for the customers and the environment. The aim of the study is to find the perception of the customers those are using green banking. Literature review: Green banking has a great impact on the customer perception. Customer perception can be made with the advertisement and marketing of the brand. There are some challenges like hacking of information those are faced by customers are stated. Environmental, Social and Governance Theory can help banking system that green banking is important for sustainable life. Methodology: In this research primary quantitate data collection is taken and 55 responses are collected to know opinion about green banking to customers with the help of SPSS. The statistics collected are properly tested by applying descriptive and regression analysis. Findings and discussion: It is seen that mojority of people think that green banking is a sustainable process and it is time saving and smooth process to do financial transactions. It is also seen that most of the people are agreed with that green banking is beneficial for the customers. Conclusion: Green banking is helpful and its impact on the customers positively that is need of business. There are some challenges like hacking of information that may cause the financial loss of the customers.