Credit score.
In plain English
A credit score (most commonly the FICO score, 300-850) is a model that predicts how likely you are to repay a future loan, based on your credit history. Banks use it to decide whether to lend to you and at what interest rate. Higher scores mean better rates on mortgages, car loans, and credit cards. Below 580 is generally 'poor'; 670-739 is 'good'; 800+ is 'excellent.'
01Why it matters
A higher credit score saves you money, sometimes tens of thousands of dollars over a lifetime. The difference between an excellent score and a fair score on a 30-year mortgage can mean an extra $50,000-$100,000 in interest paid over the life of the loan. Credit scores also affect rental applications, insurance rates in many states, and sometimes employment decisions.
02The math, step by step
A buyer with a 760 credit score might qualify for a 6.5% mortgage rate. The same buyer at 620 might be quoted 7.5% or higher (or denied). On a $300,000, 30-year loan, that 1% difference adds about $216 per month and roughly $77,000 in interest over the life of the loan. Same house, same buyer, just the score is different.
Illustrative example. The amounts here are hypothetical, chosen to show how the math works, not real quoted rates or figures.
03What this is NOT
Your credit score has nothing to do with how much money you have. Wealthy people can have bad credit (if they don't pay bills on time). People with modest incomes can have excellent credit. The score is purely about repayment behavior.
Plain-English answers from our glossary. Receipts included. Never advice.
Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice