Your credit score is a three-digit number that quietly shapes a big part of your financial life: whether you’re approved for a loan or credit card, the interest rate you pay on a mortgage, and sometimes whether you can rent an apartment. Yet most people don’t really know how it works or what moves it. This guide explains, in plain English, what a credit score is, what affects it, and how to build a strong one.
This is general educational information, not personalized financial advice. Credit scoring details are current as of October 2026.
What is a credit score?
A credit score is a three-digit number, usually from 300 to 850, that tells lenders how likely you are to repay borrowed money. It’s calculated only from the information in your credit report, meaning your history of borrowing and repaying. The higher your score, the less risky you look to lenders, and the better the rates and terms you’re likely to get.
There are two main scoring models in the U.S.: FICO and VantageScore. FICO is the one most lenders use. VantageScore is what many free apps and monitoring services show you. Both use the same 300–850 scale, but they weigh things differently, so your two scores will rarely match exactly. We explain the differences below.
The five factors that make up your FICO score
This is the heart of understanding your score. FICO builds your number from five factors, each with a different weight:
- Payment history (35%) — the biggest factor. Do you pay your bills on time? A single payment 30 or more days late can cost a high score a lot of points. In an example FICO published, a 780 score fell by roughly 90 to 110 points after one 30-day late payment. FICO’s newer simulation shows a 793 score dropping about 63 to 83 points. Late payments can stay on your report for up to seven years.
- Amounts owed / credit utilization (30%). This is how much of your available credit you’re using. If your cards are near their limits, your score suffers even if you pay on time. Keep utilization under 30%, and lower is better. Our guide on how to improve your credit score explains the per-card trap and the statement-date timing trick, and how credit cards work shows how your statement balance is set.
- Length of credit history (15%). How long you’ve had accounts open. Older accounts help, which is why closing your oldest card can hurt your score.
- New credit (10%). How many accounts you’ve opened recently and how many hard inquiries lenders have made. Opening several accounts in a short time can look risky.
- Credit mix (10%). Whether you handle different types of credit well, such as credit cards and installment loans (auto, mortgage, student loans). Variety helps, but only modestly.
What does NOT affect your credit score: your income, your job, your age, your marital status or where you live. Lenders may ask about these when deciding on a loan, but they aren’t part of the score itself.
Credit score ranges: what the numbers mean
FICO groups scores into five tiers. VantageScore’s tiers are in the next section.
| Range | Tier | What it means |
|---|---|---|
| 800–850 | Exceptional | Best rates and terms; lenders compete for you |
| 740–799 | Very Good | Qualify for most products at strong rates |
| 670–739 | Good | Qualify for most products, but not always the top rate |
| 580–669 | Fair | Approvals possible, but higher rates; some denials |
| 300–579 | Poor | Limited options; often secured products or higher costs |
You don’t need a perfect 850. Very few people have one. The meaningful jumps come from moving up a tier: from Fair to Good opens more approvals, and from Good to Very Good lowers your rates. Each lender still sets its own cutoffs.
FICO vs VantageScore: why you have more than one score
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The score you see in a free app is often a VantageScore, while the score a lender pulls is usually a FICO. Both read the same kind of credit report on the same 300–850 scale, but they use different formulas and versions. They can also draw on different bureau data, so the numbers rarely match exactly. In a CFPB study, about one in five consumers would likely have received a meaningfully different score than the one a lender saw. A different number doesn’t mean one of them is wrong.
The tiers differ too. VantageScore uses four tiers instead of FICO’s five:
| VantageScore tier | Range |
|---|---|
| Superprime | 781–850 |
| Prime | 661–780 |
| Near prime | 601–660 |
| Subprime | 300–600 |
So a 665 is “Fair” on the FICO scale but “Prime” on VantageScore. Before you react to a label, check which model produced it.
Both models treat on-time payments as the biggest factor. FICO puts payment history at about 35% of a typical score, while VantageScore puts it at about 41% of a VantageScore 4.0 score. The two group the remaining factors differently, so their other percentages don’t line up neatly.
VantageScore can score thinner files. To produce a FICO Score, your report generally needs an account open for six months or more and some activity reported in the last six months. VantageScore can produce a score from as little as one month of history, so if you’re new to credit, you may have a VantageScore before you have a FICO. Our guide to building credit from scratch shows how to get started.
A few more differences that show up in practice:
- Rate shopping: FICO counts several mortgage, auto or student loan applications as one inquiry if they fall within 45 days (14 days in older versions). VantageScore uses a 14-day window. Keep your loan applications within 14 days and you’re covered under every model.
- Paid collections: FICO 8, still the most widely used version, counts paid collections. FICO 9, FICO 10 and VantageScore 3.0 and 4.0 ignore them. The credit bureaus also no longer report paid medical collections or medical collections under $500.
- Rent: VantageScore 4.0 and newer FICO versions can count rent payments, but only if they’re reported to the bureaus. The Classic FICO scores long used for mortgages don’t count them.
- Bureaus: your score can differ at Equifax, Experian and TransUnion, because lenders don’t all report to every bureau or at the same time.
Mortgages changed in 2026. For decades, loans sold to Fannie Mae and Freddie Mac required Classic FICO. Since September 9, 2026, every approved lender can choose either Classic FICO or VantageScore 4.0 for those loans. FICO 10T, which looks at 24 months or more of your balance history, has also been approved, but as of October 2026 lenders can’t use it for these loans yet. If you have a thin file but years of on-time rent, ask lenders which model they use. See our North Carolina first-time homebuyer guide for the rest of the requirements.
You don’t need a strategy for each model. Both reward the same habits: paying on time, keeping balances low, keeping old accounts open and applying for credit sparingly. Improve one score and the other follows.
Why your score matters (in real dollars)
A lower score usually means a higher interest rate, and on a mortgage that adds up fast. Take a $350,000, 30-year mortgage: at 6.5%, the monthly payment is about $2,212; at 8.0%, it’s about $2,568. That 1.5-point difference costs about $356 a month, or roughly $128,000 more interest over the life of the loan. How much rates differ by score changes with the market, and myFICO’s Loan Savings Calculator shows current rates by score range. The same logic applies to credit cards and auto loans.
How to build and improve your credit score
The factors that build your score are straightforward and within your control.
- Pay every bill on time. It’s 35% of your score. Set up autopay for at least the minimum so you never miss a due date.
- Keep your credit utilization low. Use less than 30% of your available credit, ideally much less. Paying your statement in full each month keeps utilization low and avoids interest.
- Don’t close your oldest cards. Length of history helps, which is why your first credit card is worth keeping for good.
- Apply for new credit sparingly. Each hard inquiry can lower your score slightly. Only apply when you need to.
- Check your credit reports for errors. You can get free reports every week from all three bureaus at AnnualCreditReport.com. Our guide on how to read your credit report shows what to look for and how to dispute mistakes.
- Be patient. Credit history takes time to build. For the full step-by-step plan, including the fastest wins and a 90-day plan, see how to improve your credit score.
Common credit score myths
- Myth: “Carrying a small balance helps your score.” False. You don’t need to carry a balance or pay interest to build credit. Pay in full every month.
- Myth: “Closing old credit cards improves your score.” False. Closing a card reduces your available credit, which raises utilization, and can shorten your history.
- Myth: “Checking my own score hurts it.” False. Checking your own score or report is a soft inquiry with no impact. Only hard inquiries from lenders you apply with affect your score.
- Myth: “My income is part of my score.” False. Income isn’t a scoring factor at all.
Frequently asked questions
What’s a good credit score? On the FICO scale, 670–739 is “Good,” 740–799 is “Very Good” and 800+ is “Exceptional.” Each lender sets its own cutoffs for its best rates.
How can I check my credit score for free? Many banks and card issuers show you a free score. Check whether it’s a FICO or a VantageScore, since the two can differ. You can also get your full credit reports free every week at AnnualCreditReport.com.
Does checking my own score lower it? No. Checking your own score is a soft inquiry with no impact.
How long does it take to build credit? FICO needs at least six months of history to score you at all. Building a strong score takes months to years of on-time payments and low utilization, but you can see improvements within a few months of good habits.
Do I need to carry a balance to build credit? No, that’s a myth. Pay your statement in full each month; it builds credit and avoids interest.
Why is my FICO different from my VantageScore? The two models weigh factors differently, use different tiers, and may be pulled on different dates or from different bureaus. Neither number is wrong. Check which one your lender uses.
Can I have a VantageScore but no FICO score? Yes. FICO generally needs an account at least six months old with recent activity, while VantageScore can score a file with about one month of history.
Which score do mortgage lenders use? For loans sold to Fannie Mae and Freddie Mac, lenders can now choose Classic FICO or VantageScore 4.0. Ask your lender which one they’ll pull.
The bottom line
Your credit score is a 300–850 number that reflects how reliably you handle credit, built mostly from your payment history and how much of your credit you use. It’s largely in your control: pay on time, keep balances low, don’t close old accounts, apply sparingly and check your reports for errors. You’ll see different numbers from FICO and VantageScore, but the same habits raise both. And since a better score means lower rates on everything you borrow, it’s one of the most valuable financial habits you can build.
Related reading: A stronger score directly affects the rates in our guides to personal loans, mortgages and credit cards.
Sources
- myFICO — What is a Credit Score? (score ranges): https://www.myfico.com/credit-education/credit-scores
- myFICO — What’s in your credit score? (35/30/15/10/10): https://www.myfico.com/credit-education/whats-in-your-credit-score
- myFICO — How Credit Actions Impact FICO Scores (late payment simulation): https://www.myfico.com/credit-education/faq/affects-of-credit-actions
- myFICO — Do Credit Inquiries Lower Your FICO Score? (rate-shopping windows): https://www.myfico.com/credit-education/credit-reports/does-checking-credit-score-lower-it
- myFICO — How Do Collections Affect Your Credit?: https://www.myfico.com/credit-education/faq/negative-reasons/collections-affect-credit
- myFICO — FICO Score Versions (FICO 10T trended data): https://www.myfico.com/credit-education/credit-scores/fico-score-versions
- myFICO — Loan Savings Calculator: https://www.myfico.com/credit-education/calculators/loan-savings-calculator
- VantageScore — The Complete Guide to Your VantageScore 4.0 (tiers, weights): https://vantagescore.com/resources/knowledge-center/the-complete-guide-to-your-vantagescore
- VantageScore 4.0 User Guide (scoring thin files, inquiries): https://cdn.vantagescore.com/uploads/2022/09/VantageScore-4.0-UserGuide_abr_Sep22.pdf
- FHFA — Credit Scores (mortgage policy, updated October 2026): https://www.fhfa.gov/policy/credit-scores
- CFPB — Credit reporting white paper (2012, FICO late-payment example): https://files.consumerfinance.gov/f/201212_cfpb_credit-reporting-white-paper.pdf
- CFPB — Study on consumer vs. lender credit scores (2012): https://files.consumerfinance.gov/f/201209_Analysis_Differences_Consumer_Credit.pdf
- AnnualCreditReport.com (free official credit reports): https://www.annualcreditreport.com/
General educational information, not personalized financial advice. Credit scoring models and mortgage rules were current as of October 2026 and change over time. Confirm which score a lender uses before applying.
