Cashback current account terms vary, but typically the more you spend – with approved partners such as chain stores and energy companies – the more cashback you earn. That said, most banks cap the total amount you can earn in a year, as well as restricting the type of spending on which you can earn cashback. You may, for example, be able to earn up to 15% cashback when you make a purchase with a particular retailer, up to a maximum of £150 per year.