Is there a limit on how much of my balance earns 2.75% AER?

No. If you choose extra balance interest as your benefit, there’s no upper balance limit. Every pound in your Biscuit current account will earn 2.75% AER* (2.72% gross**), whether your balance is £500, £5,000 or more. 

*AER stands for ‘annual equivalent rate’. We pay you interest on a monthly basis, but AER shows you the rate you’d get if this monthly interest was compounded and paid once a year instead. We provide an AER to make it easier for you to compare our rates with other providers. 

**We pay gross interest, which means nothing is deducted for tax.