Abstract: Today, banking sector plays a vital role when providing financial services and managing financial assets. With the development of the information systems and information technology, all banks adopt some new technological advancement for their entity. In a banking sector, customers are the most important part. Conventionally, all the transactions are done by manually. Customers had to go bank branch every time. Therefore, it concerns huge time and cost as well.But nowadays internet banking is becoming popular and it reduces the time and cost. This study based on within the Sri Lankan context and the researcher selected the Sampath bank in Colombo district to do this study.