*Rates applicable to accounts opened from 24 October 2013. To see rates applicable to accounts opened before 24 October 2013 please see our interest rates for personal accounts (including discontinued accounts) . Interest rate quoted is Annual Equivalent Rate (AER) and illustrates what the interest rate would be if interest was paid and compounded once each year. Tax-free is the contractual rate of interest payable where the interest is exempt from income tax. The favourable tax treatment for ISAs could change.