A lot has changed in the banking business over the past 20 years so that it can compete with other industries. In order to stay competitive, the banking industry is putting a lot of emphasis on technology. Nowadays, the most common technology utilized by banks is e-banking. Innovations in technology and healthy competition led to the rise of online banking. In order for banks to meet the difficulties and stay competitive, client satisfaction is crucial. Consequently, the degree to which clients in the Tirunelveli District are satisfied with the e-banking services offered by both public and private sector banks is the primary subject of this article. Only the Tirunelveli area in Tamil Nadu is included by this study. The study's goals are to(1) determine the extent to which public and private sector bank clients are satisfied with their E-banking experiences and(2) determine the factors that influence the adoption of E-Banking by these two types of financial institutions. This study utilized the convenience sampling method. Questionnaires were used to gather the main data. According to the results, clients of both types of banks are equally content with the services provided by ATMs. Customers are also pleased with the private sector banks' online banking offerings. Customer adoption of e-banking is largely driven by its ease of use, according to the research. Hence, financial institutions should keep their apps current and user-friendly. Of all the ebanking channels, ATMs are the most popular. Financial institutions should prioritize the expansion of automated teller machines (ATMs) as a means of disseminating all banking services.