As long as you pay off your credit card each month, cards with no annual fee essentially let you earn free rewards.

Now, there actually isn't a Capital One Trifecta. You're probably thinking of the Chase Trifecta, which is a strategy for earning more rewards points by using three Chase credit cards. However, Capital One cardholders can employ a strategy called the Capital One Duo.

Determining the best all-around cash-back credit card can lead to plenty of arguments. Everyone believes they know the best cash-back card today and can come at you with a list of evidence as to why they think so.

Chasing credit card rewards while carrying card debt makes no sense when you consider the exceptionally high interest rates cards charge when consumers carry a balance. The best way to get ahead with credit card rewards is to always pay your statement balance in full each month.