A credit score is a number that summarizes how reliably you have handled borrowed money. Lenders use it to decide whether to approve a loan, a credit card or a mortgage, and what interest rate to offer. A higher score usually means lower borrowing costs, which can save you thousands over the life of a loan.
What Is a Credit Score?
A credit score is calculated from the information in your credit report, a record of your borrowing history held by credit bureaus (also called credit reference agencies). It is meant to predict how likely you are to repay on time.
Scoring systems differ by country. In the United States, the most common scores (FICO and VantageScore) range from 300 to 850. Other countries use different scales and providers, for example Experian, Equifax or TransUnion in the UK and Canada, or national credit bureaus elsewhere. The ideas below apply broadly, but check how scoring works where you live.
What Affects Your Credit Score?
Exact formulas are private, but the main factors are well known. For the widely used FICO model in the US, the approximate weights are:
| Factor | Approx. weight | What it means |
|---|---|---|
| Payment history | 35% | Do you pay on time? |
| Amounts owed (utilization) | 30% | How much of your available credit you use |
| Length of credit history | 15% | How long your accounts have been open |
| New credit | 10% | Recent applications and new accounts |
| Credit mix | 10% | Types of credit you manage (cards, loans) |
Credit Utilization Explained
Credit utilization is the share of your available credit that you are using. If your cards have a combined limit of $10,000 and you carry $3,000 in balances, your utilization is 30%. Lower is generally better, and many experts suggest keeping it below about 30%, with even lower being better for scoring.
Why Your Credit Score Matters
- Loan approval: A higher score makes approval more likely.
- Interest rates: Lenders often reserve their best rates for borrowers with strong scores. On a long loan, even a small rate difference is expensive. See how in our post on what a 1% rate rise costs on a mortgage.
- Other areas: In some countries, landlords, insurers and even employers may check credit information.
Common Myths
- "Checking my own score lowers it." Checking your own score is usually a "soft" check and does not hurt it. Applying for new credit can create a "hard" check that may have a small, temporary effect.
- "I must carry a balance to build credit." You do not. Paying your card in full each month builds credit without paying interest.
- "Closing old cards always helps." It can hurt, because it may shorten your history and raise your utilization.
- "Income is part of my score." Income is not a direct factor in most credit scores, though lenders consider it separately.
How to Improve Your Credit Score
- Pay on time, every time. Set up automatic payments for at least the minimum.
- Keep balances low relative to your limits.
- Avoid applying for lots of credit at once.
- Keep older accounts open if they have no fees.
- Check your credit report regularly and dispute any errors with the bureau.
- Be patient. Meaningful improvement often takes months, and negative marks fade over years.
If debt is holding your score back, our guide on how to pay off debt faster explains two popular payoff strategies.
Frequently Asked Questions
What is a good credit score?
It depends on the scoring model and country. On the US 300 to 850 scale, scores in the high 600s and above are often considered decent, and scores above about 740 are often considered very good. Check the ranges used by your local bureau.
How often does my score change?
It can change whenever lenders report new information, typically monthly.
Can I have a credit score without a credit card?
Yes. Loans and some other accounts can build a credit history, though having no history at all can make scoring harder.
Disclaimer: This article is general information, not financial advice. Credit scoring rules and ranges differ by country and provider. Check with your local credit bureau or a qualified professional.