A FICO score is a three-digit number, ranging from 300 to 850, that represents your creditworthiness based on the information in your credit report. Lenders use it to decide whether to approve you for credit cards, mortgages, auto loans, and other forms of borrowing, and what interest rate to charge you. The score is produced by the Fair Isaac Corporation (hence “FICO”), and it remains the dominant credit score in lending decisions across the United States.
How FICO Score Ranges Work
Your score falls into one of five categories that lenders use as a quick gauge of risk:
- Exceptional (800 and above): Qualifies you for the best available interest rates and terms.
- Very Good (740 to 799): Still gets you highly competitive rates on most products.
- Good (670 to 739): Considered an acceptable borrower by most lenders, though rates may be slightly higher.
- Fair (580 to 669): You’ll likely face higher interest rates and may be declined for some products.
- Poor (579 and below): Approval is difficult, and any credit offered will come with steep costs.
These categories aren’t rigid cutoffs that every lender follows identically. A mortgage lender might set its minimum at 620, while a credit card issuer might approve applicants at 580 with a lower credit limit. But the ranges give you a reliable sense of where you stand.
The Five Factors Behind Your Score
FICO scores are calculated from five categories of data in your credit report, each carrying a specific weight:
- Payment history (35%): Whether you’ve paid your bills on time. A single 30-day late payment can drop your score significantly, and the effect is worse if you were further behind or if the missed payment is recent.
- Amounts owed (30%): How much of your available credit you’re currently using, often called your credit utilization ratio. If you have a $10,000 credit limit and carry a $3,000 balance, your utilization is 30%. Keeping this below 30% generally helps your score, and single digits is even better.
- Length of credit history (15%): How long your accounts have been open. This includes the age of your oldest account, the age of your newest account, and the average age across all accounts. Closing an old credit card can shorten your history and hurt your score.
- New credit (10%): How many new accounts or credit inquiries you’ve had recently. Each time you apply for credit, a “hard inquiry” appears on your report. A few inquiries in a short period for the same type of loan (like rate-shopping for a mortgage) are typically grouped and counted as one.
- Credit mix (10%): The variety of credit types on your report, such as credit cards, installment loans, a mortgage, or an auto loan. Having a mix shows lenders you can manage different kinds of debt, though this is the least impactful factor.
Payment history and amounts owed together account for nearly two-thirds of your score. If you’re trying to improve your number, those two areas offer the biggest return on effort.
Why You Have More Than One FICO Score
You don’t have a single FICO score. You have dozens. FICO has released multiple versions of its scoring model over the years, and each version can produce a slightly different number from the same credit report. On top of that, your score is calculated separately from each of the three major credit bureaus (Equifax, Experian, and TransUnion), and since not every lender reports to all three, each bureau’s data can differ.
FICO 8 is still the most widely used version across the lending industry. But newer models exist, and they’re starting to gain traction. FICO 10T, for example, uses “trended data,” meaning it looks at your credit behavior over time rather than just a snapshot. If you’ve been steadily paying down a balance over the past two years, FICO 10T rewards that trajectory. Conversely, late payments carry a steeper penalty under this newer model than under older versions.
The mortgage industry is in the middle of a transition. The Federal Housing Finance Agency validated FICO 10T for use by Fannie Mae and Freddie Mac in 2022, and those agencies plan to publish historical FICO 10T scores in summer 2026, with full adoption following later. Once implemented, mortgage lenders selling loans to Fannie Mae or Freddie Mac will need to deliver FICO 10T scores alongside VantageScore 4.0 scores for each loan.
FICO vs. VantageScore
FICO isn’t the only credit scoring model. VantageScore, created jointly by the three major credit bureaus, is its main competitor. When you check your score for free through a banking app or a credit monitoring site, you’re often seeing a VantageScore rather than a FICO score, which is why the number might not match what a lender pulls.
One practical difference: FICO requires you to have at least one credit account that’s been open for six months and some activity on a tradeline within the past six months before it can generate a score. VantageScore can score you as long as your report has at least one account, even if it’s brand new. This makes VantageScore more accessible for people who are just starting to build credit.
Both models use the same 300-to-850 range, and both pull from the same underlying credit report data. But because they weight factors differently, the scores they produce for the same person can vary by 20 points or more. For lending decisions, FICO remains dominant. Most mortgage, auto, and credit card lenders rely on a FICO score when deciding whether to approve you.
How to Check Your FICO Score
Many banks and credit card issuers now provide your FICO score for free on your monthly statement or within their mobile app. Discover, for example, offers a free FICO score to anyone, even non-customers. You can also purchase your scores directly from myFICO.com, which shows you scores from all three bureaus across multiple FICO versions.
Keep in mind that checking your own score is a “soft inquiry” and has zero effect on your credit. You can check it as often as you like without any penalty. Separately, you’re entitled to a free copy of your credit report from each bureau once per year through AnnualCreditReport.com, which shows you the raw data your scores are built from but does not include the score itself.
What a FICO Score Affects Beyond Lending
Your FICO score influences more than loan approvals and interest rates. Landlords commonly pull credit scores when evaluating rental applications, and a low score can mean a larger security deposit or an outright denial. Auto insurance companies in most states factor credit-based scores into your premium calculation, meaning a lower score can cost you more for the same coverage. Some employers run credit checks during the hiring process, particularly for positions that involve handling money, though they see a modified version of your credit report rather than a score.
Even utility companies and cell phone carriers may check your credit when you open a new account. A poor score could require you to pay a deposit before service begins. The reach of your credit score extends well beyond the lending world, which is why keeping tabs on it matters even if you aren’t planning to borrow anytime soon.