In addition, the report found that 39 per cent either visit their bank rarely or not at all, while only 34 per cent of people bank by post.
Commenting on the findings, Abbey's savings head, Reza Attar-Zadeh, said they showed that people "really are enjoying the online banking experience".
She added: "There is real satisfaction in watching savings grow and the internet enables us to do this with real ease."
Abbey is one of the UK's biggest mortgage and savings providers, with offices in London, Milton Keynes, Bradford, Glasgow and Belfast.
Other recent research by the company found that November was the most popular month for consumers to do their Christmas shopping.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.