If you make mistakes with a credit card, you'll pay a price – sometimes a hefty one.
Set up auto notifications to remind yourself, because if you don't pay within 30 days, you will be reported, charged a fee, and among other problems, future purchases using your credit score will be much more difficult. (Getty image)
Depending on your balance, making only minimum payments can up the life and sum of your debt considerably. If you have to pay the minimum now and again, it's not a huge deal, but don't make a habit out of it. (Getty image)
If you do need to charge a big amount, say on an emergency, try to pay down the balance as quickly as possible. Creditors look closely at the percentage of available credit you use each month. (Getty image)
It's an expensive way to borrow money, so consider a personal loan if you really need the cash, but definitely don't use a credit card cash advance for a discretionary purchase that you otherwise can't afford.
Each account represents a component of your available credit and each time you remove one by closing it, you are reducing the pool of available credit against which all your credit balances are measured. (Getty image)
There are some delicious 0-percent introductory offers out there, but all things must come to an end and so do those offers. Make sure you understand your real rate once the interest-free rate dies out. (Getty image)
If you're running a balance and the interest's too high, check out the other guys and see what they would charge. If you find a better deal, don't be afraid to call your credit card issuer and haggle. (Getty image)
Store associates love to offer the 10-15% discount, but the higher interest rates come later when you run a balance. Stick with the basics rather than embracing every retailer's credit card. (Getty image)
Reviewing credit accounts frequently will alert you to potential identity theft issues, as well as let you know how close you're coming to your credit limit. (Getty image)
If you want to buy something or pay a bill online, go to the right site, type in the correct URL and make sure it is secure by looking for the lock and the "https" in the web address field. (Getty image)