I disgaree with @Lightlyseared. I would never suggest paying only part of a bill, the interest is criminal. Part of your credit score is how much balance you have compared to how much open credit you have as a percentage. Even if you pay your credit card bills off completely every month, which is what my husband and I do, there is still a “balance” before you pay the bill. My credit score is around 760 last I looked and my husbands is above 800, we have NEVER paid a minimum, always the total credit card bill. Here is a wikipedia link http://en.wikipedia.org/wiki/Credit_score_(United_States) halfway down the page it tells you the breakdown of how the score is determined.