In the United States, a credit score is a number based on a statistical analysis of a person's credit files, that in theory represents the creditworthiness of that person, which is the likelihood that people will pay their bills. A credit score is primarily based on credit report information, typically from one of the three major credit bureaus: Experian, TransUnion, and Equifax. Income is not considered by the major credit bureaus when calculating a credit score.
There are different methods of calculating credit scores. FICO score, the most widely known type of credit score, is a credit score developed by FICO, previously known as Fair Isaac Corporation. It is used by many mortgage lenders that use a risk-based system to determine the possibility that the borrower may default on financial obligations to the mortgage lender. All credit scores must be subject to availability. The credit bureaus all have their own credit scores: Equifax's ScorePower ( FICO score from Equifax ), Equifax Credit Score, Experian's PLUS score, and TransUnion's credit score, and each also sells the VantageScore credit score. In addition, many large lenders, including the major credit card issuers, have developed their own proprietary scoring models.
Studies have shown scores to be predictive of risk in the underwriting of both credit and insurance.[16][17][18] Some studies even suggest that most consumers are the beneficiaries of lower credit costs and insurance premiums due to the use of credit scores.[17][19]
https://en.wikipedia.org/wiki/Credit_score