In this day and age, having a credit card can either be an advantage of disadvantage, depending on how you manage your expenses. Making sure that his works for your advantage may be a challenge for some, but for those who are doing well, here are some of the things that they religiously do. First is to pay the credit card bills on time, which is basically the single most significant thing that has to be done to preserve and enhance credit rating. Always pay at least your minimum, or if possible pay at least double of the minimum and allow time for your payment to get to the company if you are using the mail. It is actually an obvious thing, but a lot of people are neglecting to do. Another is by negotiating for a lower rate with the credit card company. if your credit history is without blemish, you are basically considered an asset to your car company. Try calling them to lower your interest rate. This is possible most of the time, but never publicized by credit card companies. If what you are currently paying seems to be too high, entail you may cancel the card and go with a competitor unless they adjust your rate lower.