A credit score is a three-digit number that tells lenders how likely a person is to repay borrowed money. It influences whether someone is approved for a credit card, a car loan, or a mortgage, and what interest rate they will pay. Landlords, insurers, and some employers look at credit history as well, which makes the score one of the most important numbers in personal finance.
Where the Number Comes From
In the United States, three credit bureaus, Equifax, Experian, and TransUnion, collect information about how people use credit. Banks and lenders report account balances, payment records, and new applications to these bureaus, which compile the data into credit reports. Scoring companies then turn those reports into a number. The most widely used model is the FICO score, which ranges from 300 to 850. A competing model, VantageScore, uses the same range. Higher is better, and scores above roughly 670 are generally considered good, while scores of 800 or more are considered exceptional.
The Five Factors
FICO scores are built from five categories of information. Payment history carries the most weight, at about 35%, because past behavior is the best predictor of future behavior. A single payment that is 30 days late can lower a score noticeably. Amounts owed make up about 30%. The key measure here is credit utilization, the share of available credit a person is using. Someone with a $10,000 limit and a $2,000 balance has a utilization of 20%. Lower is better, and a common guideline is to stay under 30%. The remaining factors are length of credit history at about 15%, new credit applications at 10%, and the mix of account types at 10%. This is why closing an old card or applying for several loans at once can cause a score to dip.
Why It Matters
The difference between a good score and a poor one is measured in real money. Lenders charge higher interest rates to borrowers they consider risky. On a 30-year mortgage, a gap of even one percentage point in the interest rate can add tens of thousands of dollars in interest over the life of the loan. A low score can also mean larger security deposits, higher insurance premiums in many states, and fewer options when renting an apartment. A strong score, by contrast, gives borrowers access to the best rates and the most flexibility.
Building and Protecting Credit
People with no borrowing history often have no score at all, which can be as limiting as a bad one. Common starting points include a secured credit card, a student card, or being added as an authorized user on a family member’s account. From there, the habits that build credit are simple: pay every bill on time, keep balances low, and avoid opening accounts that are not needed. It is also worth checking credit reports for mistakes. Federal law allows consumers to request free reports from each bureau through AnnualCreditReport.com, and errors can be disputed.
Conclusion
A credit score is a summary of financial reliability, built slowly from years of ordinary decisions. It does not measure income or wealth, only how a person has handled debt. Because the score rewards consistency, the best time to start building it is early. A few years of on-time payments and modest balances can save a borrower a great deal of money when the larger loans of adult life arrive.