Learn how cash-back rewards from credit cards and apps can earn you money based on spending, and find out the benefits and ...

The average American household spends $6,545 a month, according to Motley Fool Money research. Not all of that can run through a rewards card -- but a lot of it can. Let's assume that roughly half of ...

With these cards, you'll be able to profit from your rewards immediately because you're not on the hook for an annual fee.