You know it’s important to check your credit card statement for errors and fraudulent charges. But have you really looked at the interest rate lately? Some credit card companies will increase your interest rate if you put a large purchase on another card, or if your credit score changes (even if its due to a credit inquiry by the cable company).

Every month, check your credit card interest rate on your statement. You want to make sure that it remains that same. And if you do find that the interest rate has been increased, you may find that it solves the mystery of why your balance never seems to go down.