What a credit score actually is

A credit score is a three-digit number that lenders use to decide whether to lend you money and at what interest rate. It is built from your borrowing history — how much you owe, whether you pay on time, how long you have had credit accounts open, and what types of credit you use. The score itself does not judge you as a person; it is a prediction tool that says "based on this person's past behavior with borrowed money, how likely are they to repay a new loan?"

The most common credit scores range from 300 to 850. A higher number means lower risk to the lender. Most lenders consider scores above 670 as good, though the exact cutoff varies by lender and loan type. A mortgage lender may accept 620, while a credit card issuer might want 700. Your score can change month to month as your credit report updates.

Key Takeaways

  • Your credit score is calculated from five categories: payment history (35%), amounts owed (30%), length of credit history (15%), credit mix (10%), and new credit inquiries (10%).
  • Payment history is the single largest factor — a single late payment can lower your score, and the impact fades over time but stays on your report for seven years.
  • Credit utilization, the percentage of your available credit you are actually using, matters more than the total amount you owe.
  • You have three separate credit scores from Equifax, Experian, and TransUnion, and they may differ because each bureau has different information about you.
  • Checking your own credit report does not lower your score, but a hard inquiry from a lender does, though the impact is small and temporary.

The five factors that make up your score

Credit scoring models, most commonly the FICO score used by the majority of lenders, weight five categories. Payment history counts for 35 percent of your score. This includes whether you paid bills on time, how late any payments were, and how many accounts show late payments. A payment 30 days late hurts less than one 90 days late. A single missed payment can drop your score by 100 points or more, depending on your starting score and credit history.

Amounts owed counts for 30 percent. This is not just your total debt — it is your credit utilization ratio, the percentage of your available credit you are using. If you have a credit card with a $5,000 limit and a $1,500 balance, your utilization on that card is 30 percent. Lenders prefer to see utilization below 30 percent across all your cards. Paying down balances raises your score faster than paying off debt entirely, because the ratio improves when ready.

Length of credit history counts for 15 percent. This includes how long your oldest account has been open and the average age of all your accounts. Closing old credit cards can lower this factor because it reduces your average account age. Credit mix counts for 10 percent — having different types of credit (credit cards, car loans, mortgages, student loans) shows you can manage different kinds of borrowing. New credit inquiries count for 10 percent. When you explore for credit, the lender pulls your report, creating a hard inquiry that temporarily lowers your score by a few points. Multiple hard inquiries in a short time (like shopping for a car loan) usually count as one inquiry if they happen within 14 to 45 days, depending on the scoring model.

How late payments and negative marks affect your score

A payment reported as late stays on your credit report for seven years from the date you first missed it, even if you pay it later. The damage to your score is heaviest in the first year and gradually fades, but the mark itself does not disappear until the seven years are up. A 30-day late payment hurts less than a 60-day or 90-day late payment. If you miss a payment, paying it as soon as possible limits the damage.

Other negative marks also lower your score. A collection account (debt sold to a collector) stays for seven years. A foreclosure or repossession stays for seven years. A bankruptcy stays for seven to ten years depending on the type. Tax liens and judgments have different timelines. The older these marks are, the less they hurt your score, but they remain visible to lenders for years.

Why you have three different credit scores

You do not have one credit score — you have three, one from each of the major credit bureaus: Equifax, Experian, and TransUnion. Each bureau collects information independently, so each has a slightly different credit report about you. One bureau might have a late payment that another does not know about yet. One might list an old account that another has already removed. Because the reports differ, the scores differ.

Lenders may check one bureau, all three, or a combination. Mortgage lenders often pull all three and use the middle score. Credit card issuers might use just one. This is why your score can vary by 50 points or more depending on which bureau a lender checks. You can request a free credit report from each bureau once per year at annualcreditreport.com, the official government site. Checking your own report does not lower your score — that is a soft inquiry, not a hard inquiry.

How inquiries affect your score

When you check your own credit, that is a soft inquiry and does not affect your score. When a lender checks your credit because you applied for a loan or credit card, that is a hard inquiry and it does lower your score slightly, usually by five points or fewer. The impact is temporary and fades over a few months.

Multiple hard inquiries in a short time can add up, but most scoring models treat multiple inquiries for the same type of credit (like car shopping) as a single inquiry if they happen within 14 to 45 days. This window exists because lenders know people shop around. However, explore for many different types of credit in a short time — a car loan, a credit card, a personal loan — creates multiple hard inquiries that each lower your score.

How your score changes over time

Your credit score updates as new information reaches the credit bureaus. When you make a payment, the bureau eventually learns about it and your score may improve. When you miss a payment, the damage appears after 30 days. When you pay off a balance, your utilization ratio drops and your score rises. When you open a new account, your average account age drops and your score may fall slightly, but this effect is usually small.

Negative marks fade gradually. A late payment from five years ago hurts much less than one from last month. A collection account from seven years ago is about to fall off your report entirely. Rebuilding a damaged score takes time — typically six months to a year of on-time payments to see meaningful improvement, and several years to fully recover from major damage like a bankruptcy or foreclosure.

What does not affect your credit score

Your income, employment history, and savings account balance do not appear on your credit report and do not affect your score. Your age, race, gender, and marital status are not factored in. Checking your own credit report does not lower your score. Paying off a loan early does not hurt your score (though closing the account afterward can, because it reduces your account age). Disputing an error on your report does not lower your score.

Your credit score also does not account for bills that do not go through a credit bureau — rent, utilities, phone bills, and insurance premiums usually do not appear on your credit report unless you fall far behind and the company sends the debt to a collector. This is why you can have excellent credit and still struggle to pay rent, or vice versa.

Frequently Asked Questions

How much does a hard inquiry lower my score?

A hard inquiry typically lowers your score by five points or fewer. The impact is temporary and fades over a few months. Multiple hard inquiries for the same type of credit within 14 to 45 days usually count as one inquiry, so shopping around for a mortgage or car loan does not multiply the damage.

Can I improve my credit score quickly?

Paying down credit card balances is the fastest way to see improvement because it lowers your utilization ratio when ready. Paying bills on time going forward stops new damage. However, rebuilding a score damaged by late payments or collections takes months to years. Negative marks fade gradually but stay on your report for seven years.

Does closing a credit card hurt my score?

Closing a card can lower your score because it reduces your total available credit (raising your utilization ratio) and lowers your average account age. Keeping old cards open, even unused, helps your score. If you must close a card, pay down the balance first to minimize the utilization impact.

Why did my score drop even though I paid everything on time?

Your score can drop for reasons other than late payments: opening a new account (lowers average age), closing an old account (reduces available credit), a hard inquiry from a lender, or a change in your credit mix. Sometimes a bureau corrects old information or adds an account you did not know about, which can lower your score.

How often should I check my credit score?

You can check your own credit report for free once per year from each bureau at annualcreditreport.com. Checking your score through a free service (many banks and credit card issuers offer this) does not lower it. Checking regularly helps you catch errors or fraud early, but obsessive checking will not change your score.