If your current account is always in credit, you can capitalise on it by choosing an account that pays interest.
There are several interest-paying current accounts on the market, so you can shop around to find a competitive deal. There are likely to be conditions attached to using this type of account though, for example you may need to pay a certain amount into your account every month and interest may only be paid on a limited amount.
To see what interest you’ll earn over a year, look at the Annual Equivalent Rate (AER) to compare your options.
You don’t need to take the bank or building society’s word for how good their account is; look for comparison sites that show customer service or satisfaction ratings as well as giving basic facts about accounts.