*AER. This stands for Annual Equivalent Rate. If you left a sum of money in your account all year, the AER would be the interest rate you’d get if we paid you interest during the course of the year and your subsequently higher balance then earned more interest (this is known as Compound Interest). The AER will only be higher than the gross interest rate where we pay you interest more than once a year. We quote the AER on all of our accounts so that you can compare our products with those of other banks.