There are many different ways to create a credit score report. With each of these methods the credit score formula varies. This formula decides which factors are important to your credit score and how important they are. For example, with the Fair Isaac credit scoring system we find that nearly 35 percent of the entire weight in the calculation is held by the late payment record. This means that late payments should be avoided as they are major contributors to the lowering of your credit score. Like this, if we study each method of calculation we will be able to plan the future better.