Below, CNBC Select explains how you can upgrade your credit card — and four signs it may be the time to take this step. First things first, let's define what it means to "upgrade" a credit card.

You might keep your account current or open with this cycle, but it is a sign you are overwhelmed financially.” Learn More: 6 Reasons Credit Card Debt Is Growing – and What To Do About It You ...

If you're approved for one of the top travel credit cards and you spend enough to earn a sign-up bonus, you can quickly rack up enough points to pay for hotel stays, airfare and more. However ...