How is the credit score calculated?
The most widely used credit scores are based on the Fair Isaac & Co. (FICO) credit scoring model. FICO develops scores based solely on information contained in credit reports; it compares the information contained in a consumer’s credit report to the patterns of information contained in thousands of other credit reports, and calculates a score that predicts the level of future credit risk for a particular consumer.

What factors influence the credit score?
Your credit score takes all factors into consideration; no one piece of information or one factor will determine your score, although some factors are weighted more heavily than others.
Payment History (35%)
Amount Owed (30%)
Length of Credit History (15%)
New Credit (10%)
Overall Bad Credit (10%)