Britannia Building Society has launched a new fixed-rate mini cash ISA with an interest rate of 6.55% AER/tax free fixed until October 31, 2008.

The new mini cash ISA, with a minimum investment of GBP3,000, is not linked to any other accounts and customers can transfer existing mini cash ISAs from other organizations into this account.

Neville Richardson, group chief executive of Britannia, said: Our recent research showed that almost half of the population have never opened an ISA and are missing out on the benefits of tax free savings.

This market-leading mini cash ISA will enable savers to make the most of their tax free allowance and save with Britain’s best mutual. What’s more, because we’re fair, customers who open our new ISA will also qualify for Britannia’s membership reward and receive a share of our profits.