A credit score is a rating used by a lender to help determine whether you qualify for a particular credit card, loan, or service. Based on information in your credit file, the credit reporting company analyzes your information using a complex mathematical model to yield your credit score.

Most credit scores estimate the risk a company incurs by lending you money or providing you with a service -- specifically, the likelihood that you'll fail to make payments in the next two to three years. The higher the score, the less risk you represent. Your score is calculated by a mathematical equation that evaluates many types of information found in the credit file.