A new online variable-rate e-ISA has been launched by Principality Building Society, offering a rate of 2.8 per cent AER.
It offers a one per cent unconditional introductory bonus rate for the first year and is available on balances from £1.
Julie Ann Haines, head of strategy and e-channels at Principality Building Society, noted that the conditions of the ISA are likely to prove popular.
"With the new e-ISA Issue 2, customers can draw comfort in knowing that their money is both protected from the tax man and easily accessible should their circumstances change," she continued.
The account can be entirely managed online, meaning they can have instant access to all of their savings.
Recent figures from Principality show that during the first six months of the year, pre-tax profits totalled £13.2 million, while reserves increased by £9.6 million.
The company also recorded a savings growth of £477.6 million over the course of the past 12 months.