Your credit score is a three-digit number, typically between 300 and 850, that represents how likely you are to repay borrowed money. Lenders, landlords, insurers, and even utility companies use it to decide whether to do business with you and on what terms. The higher the number, the less risky you appear, and the better deals you get.
What the Number Ranges Mean
Credit scores fall into general tiers that lenders use as shorthand when evaluating applications. While every lender sets its own cutoffs, the widely recognized FICO ranges work like this:
- 800 to 850 (Exceptional): You qualify for the lowest interest rates available. Lenders compete for your business. A mortgage borrower in this range might save tens of thousands of dollars over the life of a loan compared to someone with a fair score.
- 740 to 799 (Very Good): You’ll get approved for most products at favorable rates. For many lenders, this range is nearly as strong as exceptional.
- 670 to 739 (Good): This is roughly the median range for U.S. borrowers. You’ll qualify for most loans and credit cards, though not always at the best rates.
- 580 to 669 (Fair): You’re considered a subprime borrower. You can still get approved for credit, but interest rates will be noticeably higher. Some credit cards and loan products specifically target this range.
- 300 to 579 (Poor): Approval is difficult. When you do qualify, expect high interest rates, low credit limits, and the possibility of needing a secured card or a co-signer.
A difference of just 20 or 30 points near a tier boundary can meaningfully change the interest rate you’re offered. On a 30-year mortgage, even a half-percentage-point difference in rate can add up to thousands of dollars in extra interest over time.
How Your Score Is Calculated
Your credit score is built from the information in your credit reports at the three major bureaus (Equifax, Experian, and TransUnion). The FICO model, which is the most widely used, weights five categories:
Payment history (35%) is the single biggest factor. Every on-time payment helps, and every late payment hurts. A single payment reported 30 or more days late can drop your score significantly, and the damage is worse the later it gets (60 days, 90 days, collections). Bankruptcies and foreclosures fall into this category too.
Amounts owed (30%) is mainly about your credit utilization ratio, which is how much of your available credit you’re currently using. If you have a credit card with a $10,000 limit and a $3,000 balance, your utilization on that card is 30%. Keeping utilization below roughly 30% helps your score, and single-digit utilization is even better. This factor looks at both individual cards and your total utilization across all revolving accounts.
Length of credit history (15%) considers the age of your oldest account, the age of your newest account, and the average age across all accounts. This is why closing an old credit card can sometimes hurt your score, even if you never use it. It also means younger borrowers are at a natural disadvantage that only time can fix.
The remaining 20% is split between your credit mix (having a variety of account types like credit cards, an auto loan, and a mortgage) and new credit inquiries (how many times you’ve recently applied for credit). Neither factor carries as much weight individually, but a flurry of new applications in a short period can signal risk to lenders.
Why You Might Have Different Scores
If you check your score through your bank, a credit card app, and a monitoring service, you might see three different numbers. That’s normal. There are dozens of scoring models in use. FICO alone has multiple versions tailored to different industries: one optimized for auto lending, another for credit cards, another for mortgages. VantageScore is a competing model developed by the three credit bureaus themselves.
Newer models are expanding what counts. FICO 10T and VantageScore 4.0, both validated by the Federal Housing Finance Agency in 2022, incorporate “trended data,” meaning they look at the direction of your balances over time rather than just a snapshot. Someone steadily paying down debt looks different from someone whose balances are climbing, even if both have the same balance today. These models can also factor in rent payment history, which helps people who have thin credit files but a track record of paying rent on time.
The score your lender actually pulls may differ from the free score you see online. The free versions are useful for tracking trends and catching problems, but don’t be surprised if your mortgage lender sees a number that’s 10 to 20 points higher or lower.
Where Your Score Matters Beyond Loans
Credit scores don’t just affect whether you get a credit card or mortgage. They show up in places that catch many people off guard.
Renting an apartment: Most landlords and property management companies pull your credit as part of the application. A low score can lead to a denied application, or the landlord may require a larger security deposit or a co-signer.
Car insurance premiums: In most states, auto insurers use credit-based insurance scores as one factor in setting your premium. Two drivers with identical records but different credit profiles can pay noticeably different rates for the same coverage.
Utility deposits: When you set up electricity, gas, or water service, the utility company may check your credit. According to the FTC, if you’re a new customer or have a poor payment history, the company can require a security deposit or a letter of guarantee, where someone agrees to cover your bill if you don’t pay. The company’s policy has to apply equally to everyone, but if your credit is thin or damaged, expect to put money down before service starts. In some cases, a utility can even consider your spouse’s late payment history when deciding whether to require a deposit.
Employment screening: Some employers, particularly in finance and government, review a version of your credit report during the hiring process. They don’t see your score itself, but they can see missed payments, collections, and high debt levels.
What Actually Moves Your Score
Some actions have an outsized impact on your score, while others barely register. Paying every bill on time, every month, is the single most powerful thing you can do. One missed payment can erase years of progress, especially if your score is already high.
Paying down credit card balances is the fastest way to see a score increase. Because utilization is recalculated each time your card issuer reports to the bureaus (usually once per billing cycle), reducing a high balance can boost your score within 30 to 45 days. If you’re preparing for a major loan application, paying cards down well before you apply gives the lower balance time to show up on your report.
Avoid opening several new accounts in a short window. Each application generates a hard inquiry, and a cluster of inquiries suggests you may be taking on too much debt at once. The exception is rate shopping: if you’re comparing mortgage or auto loan offers, multiple inquiries within a 14- to 45-day window (depending on the scoring model) typically count as a single inquiry.
Building a longer credit history takes patience. If you’re starting out, a single credit card used responsibly for a year or two establishes a foundation. Adding an installment loan like a small auto loan or a credit-builder loan diversifies your credit mix, which can provide a modest bump.
How to Check Your Score for Free
You can get your actual credit reports for free once a year from each bureau at AnnualCreditReport.com. Your reports won’t include a score, but they show all the data your score is built from. Review them for errors like accounts you don’t recognize, incorrect balances, or payments marked late that you actually paid on time. Disputing and correcting errors can raise your score without changing any financial behavior.
For the score itself, most major banks and credit card issuers now provide a free FICO or VantageScore through their apps or online portals. Services like Credit Karma offer free VantageScore monitoring. These tools are good enough for tracking your progress and catching sudden drops that might signal an error or fraud. You don’t need to pay for credit monitoring unless you want specific premium features like identity theft insurance.