The best way to avoid paying interest on your credit card is to pay off your card’s balance each billing period. If you carry a balance month to month, you’ll most likely end up paying interest. There are some cards that offer 0% APR as an introductory offer, which means if you carry a balance you’ll avoid paying interest for a limited time. Just make sure you understand when the promotional period ends so you don’t end up paying interest when you don’t plan on it.