Your credit score is a number calculated separately by the three major credit reporting companies (Equifax, Experian and Trans Union) from information contained in the credit report each maintains on you.  Banks, credit card companies and mortgage and insurance companies are typical customers of the credit reporting companies and they pass information about you back and forth.  The scores generated from these credit reports determine the availability of loans, the interest rates you pay on loans and mortgages and even the price of your auto and homeowners insurance. 

Your Credit Score