A credit score is a numerical expression based on a statistical analysis of a person's credit files, to represent the creditworthiness of that person, which is the perceived likelihood that the person will pay debts in a timely manner. A credit score is primarily based on credit report information, typically from one of the three major credit bureaus, Experian, TransUnion and Equifax.

Americans are entitled to one free credit report within a 12-month period from each of the three agencies. The three credit bureaus run Annualcreditreport.com, where users can get their free credit report, normally without credit scores. Credit scores are available as an add-on feature of the report for a fee.