Definitions
AER
The Annual Equivalent Rate represents the annual rate effectively received by a customer if the interest, at the gross rate applied during a year, remained in the account and itself earned interest. As every advert for a savings product, where a rate is displayed, will contain an AER, you will be able to compare more easily the return you can expect from your savings over time.
Gross
The rate of interest paid without deduction of tax to eligible non-taxpayers.
Net
This is the Gross rate less tax (currently 20%)