Spending squeeze breeds 'balance checkers'.
People become cashstrapped 17 days after payday on average, but one in 10 consumers said their finances come under pressure within a week of receiving their monthly salary, Halifax's survey said.
More than one in five (21%) said they check their bank balance at least once a day, and a further 22% take a look more than three times a week.
While 38% of people surveyed knew their balance to the nearest pounds 5, a further 23% knew how much they had to the nearest pounds 20.
Only one in 20 people said they know their current account balance to the nearest pounds 500.
Anthony Warrington, director of current accounts at Halifax, said: "With mobile banking apps and internet banking, it's much easier to stay on top of spending and account activity whilst on the move."