What is Credit Score?

A credit score is a three-digit numerical representation of an individual's creditworthiness, typically ranging from 300 to 850 under standard models. This statistical indicator is calculated using mathematical algorithms applied to historical credit data compiled by the three major national credit bureaus: Equifax, Experian, and TransUnion. Lenders (including mortgage underwriters, auto finance companies, and credit card issuers) utilize credit scores as a primary tool to evaluate the probability that a borrower will repay debt on time. A higher score signifies lower credit risk, which enables borrowers to secure competitive interest rates, higher credit limits, and favorable repayment terms. Conversely, lower scores can lead to loan denials or significantly higher financing costs.

The two dominant credit scoring frameworks in the United States are the FICO score (developed by the Fair Isaac Corporation) and the VantageScore (developed jointly by the three major credit bureaus). Although both models utilize the 300-850 range, they employ slightly different weighting calculations. The FICO score remains the industry standard, utilized in over 90% of lending decisions, and is calculated based on five weighted categories: payment history (35%), amounts owed/credit utilization (30%), length of credit history (15%), credit mix (10%), and new credit inquiries (10%). Under the Fair Credit Reporting Act (FCRA), overseen by the CFPB and FTC, consumers are protected against the use of discriminatory lending practices. Lenders are also legally required to provide an Adverse Action Notice containing the exact credit score used if a consumer is denied credit or offered less favorable terms based on their credit profile.