The report showcases the apparent reluctance of Britons to save in the current adverse financial conditions.
ISA accounts will remain largely unfilled this year, with many Britons discouraged from saving due to interest rate cuts from the Bank of England.
A survey from Abbey, released today, indicates that fewer than one in five adults either have used or plan to use their entire £3,600 allowance for annual savings into a cash ISA. Elsewhere, 83 percent said that the interest rate carried by an ISA was an "important" part of the process of choosing an account.
The Bank of England has slashed its lending rate to an all-time low of just 0.5 percent recently, as it bids to make borrowing cheaper and promote economic recovery. This has had knock-on effects on savings rates, with the average instant-access account returning just under 0.2 percent a year.
However, top-rate ISAs are offering annual rates of over three percent, as firms bid for last-minute business ahead of this year's April 5th tax year deadline.
Reza Attar-Zadeh, director of savings and investments at Abbey, said: "With less than a week to go before the end of this tax year, the savvy savers among us will be aware the tax-year deadline means making the most of the benefits of ISAs."
Just over a third of customers told Abbey that they did not know what rates were being offered by ISA providers at the moment.
