Cash back credit cards do exactly what the name suggests: They earn cash back on qualifying purchases, and many don't even charge annual fees. They're great for people who value simplicity or ...

Before you toss your year-end credit card summary, take a closer look for valuable insights into your finances.

Our opinions are our own. No credit card earns 5% cash back on every single purchase, but a number of cards pay 5% within specific categories, including some of the biggest line items in ...