For several years now, one of the most sought after features on a credit card has been a long 0% balance transfer deal, almost to the exclusion of any other feature except maybe the headline interest rate of the card. More recently though, balance transfers have become less popular, not least because of the introduction of transfer handling fees, and there's now a new feature that more and more customers are considering to be of higher importance, namely cashback.

According to recent research, over a fifth of us now use a card that offers cashback or a rewards scheme, and the number has recently overtaken that of balance transfer users for the first time. So why has a seemingly simple feature such as cashback displaced the once mighty balance transfer deal in our priorities?

Credit cards have always suffered from the perception that they are expensive to use, with high interest charges and penalty fees - a reputation, it has to be said, that isn't altogether undeserved. Cashback cards give us the opportunity to turn that on its head, and actually come out on top financially by using our cards for everyday purchases.

For every purchase you make, a cashback card will effectively give you a refund of a small percentage of the purchase price. In the early days of cashback, this percentage was so small it was hardly worth considering - a 0.25% rebate was virtually worthless to most people with moderate spending habits. These days however, the figures are much more attractive, with a 3% rate not uncommon as an introductory offer. This kind of rebate is definitely worth having, and if you use your cashback card for all of your day to day shopping, the numbers can mount up surprisingly quickly.