credit basics
How Credit Scores Work
Credit scores are three digit numbers, usually between 300 and 850, that predict how likely you are to repay borrowed money on time. Scoring models like FICO and VantageScore calculate them from the information on your credit reports, weighing your payment history and the amounts you owe more heavily than everything else combined. Once you understand what actually feeds the number, the system stops feeling like a mystery and starts feeling like something you can work with deliberately.
By Monica Rodriguez · 4 min read
Published July 2, 2026 · Updated July 2, 2026
What are FICO and VantageScore?
FICO and VantageScore are the two major scoring models in the United States. FICO has been around since 1989 and is used in the majority of lending decisions, especially mortgages. VantageScore was created by the three credit bureaus, Equifax, Experian, and TransUnion, and it shows up often in free credit monitoring apps. Both models read the same raw material, your credit reports, and both produce scores that typically run from 300 to 850. They weigh the details a little differently, which is one reason the score in your banking app rarely matches the score a lender pulls.
What are the five factors in a FICO score?
FICO builds your score from five categories of information found on your credit report. Each category carries a different weight, and the two heaviest account for roughly two thirds of the entire score.
- Payment history, about 35 percent. Whether you pay your accounts on time, plus how late, how recent, and how frequent any missed payments were.
- Amounts owed, about 30 percent. How much you owe overall and how much of your available credit card limits you are using, often called utilization.
- Length of credit history, about 15 percent. The age of your oldest account and the average age of all your accounts.
- New credit, about 10 percent. Recent applications and newly opened accounts, including hard inquiries, which stay on your report for 2 years.
- Credit mix, about 10 percent. Whether you manage different types of credit, such as cards and installment loans.
Why do payment history and utilization dominate?
Payment history and amounts owed together drive about 65 percent of a FICO score because they answer the two questions lenders care about most. Do you pay what you owe, and are you stretched thin right now? A single payment reported 30 days late can outweigh years of quiet good behavior, and card balances sitting near their limits signal risk even when every payment arrives on time. The practical takeaway is simple. Protect your on-time record above everything else, and keep reported card balances low relative to their limits.
What do the score ranges mean to lenders?
Lenders read scores in bands rather than exact numbers, and moving from one band to the next is what changes the offers you see. FICO's commonly used ranges look like this.
- 300 to 579 is considered poor. Many lenders decline applications outright or require security deposits and cosigners.
- 580 to 669 is fair. Approvals happen, but interest rates and fees tend to run high.
- 670 to 739 is good. This is where mainstream approvals and reasonable rates usually begin.
- 740 to 799 is very good. Most lenders offer their better pricing in this band.
- 800 to 850 is exceptional. Borrowers here typically see the best terms available.
Why is my score different at each bureau?
Your score differs between Equifax, Experian, and TransUnion because each bureau keeps its own file on you, and those files rarely match. Not every lender reports to all three bureaus, and the ones that do report on different days of the month. An error can also appear on one report while the other two stay clean. On top of that, dozens of scoring model versions exist, so a lender pulling FICO 8 from Experian will see a different number than an app showing VantageScore 3.0 from TransUnion. You can review all three of your reports for free at AnnualCreditReport.com, which now offers weekly access.
What moves a credit score fastest?
The fastest movers are utilization drops and error corrections. Card balances are reported roughly once a month, so paying down a maxed-out card before the statement closes can change what the scoring model sees within one or two reporting cycles. Correcting a genuine error can also work on a short timeline, because the bureaus typically must investigate a dispute within 30 days, up to 45 in some cases. You can file those disputes yourself for free, directly with each bureau. Keep one rule in mind. Only information that is inaccurate, outdated, or unverifiable can be challenged. Accurate, current, verifiable information stays on your report no matter who disputes it.
The slowest movers are the age of your history and severe derogatories. Average account age only grows with time, and nothing speeds that up. Negative items generally report for up to 7 years, collections and charge-offs age off no later than 7 years plus 180 days from the first delinquency, and Chapter 7 bankruptcy can report for up to 10 years. For those, time and a steady on-time payment record do the heavy lifting.
Do you have to figure this out alone?
You do not have to work on your credit alone, though you always have the right to handle it yourself for free. Pull your three reports and check every account for errors, then dispute anything inaccurate directly with the bureaus at no cost. If you would rather have an experienced person read your reports and handle the dispute work from start to finish, that is exactly what a done-for-you service does. Either path begins the same way, with your reports in hand and an honest look at what is actually on them.
This guide is general information, not legal or financial advice. You have the right to dispute credit report errors yourself at no cost. Results are not typical and individual results vary.
Quick answers, straight.
What is a good credit score?
A good credit score on the FICO scale generally starts around 670, with very good beginning near 740 and exceptional at 800 and above. Lenders read scores in bands, so crossing into the next band usually matters more than gaining a few points inside the same one. Where a specific lender draws its approval line varies by product and company.
How often does my credit score update?
Your credit score updates whenever new information reaches your credit reports, which for most accounts happens about once a month. Each lender reports on its own schedule, so the three bureaus rarely refresh on the same day. That is why a score can shift several times in a month even when your habits have not changed at all.
Does checking my own credit hurt my score?
Checking your own credit does not hurt your score. Pulling your own reports at AnnualCreditReport.com or using a monitoring app counts as a soft inquiry, which scoring models ignore completely. Only hard inquiries, the kind created when you apply for new credit, can affect a score, and even those fall off your report after 2 years.
Will correcting an error raise my score?
Correcting an error can raise your score when that error was dragging it down, and the timing follows reporting cycles. Most lenders report once a month, so a fixed balance or a deleted account typically shows up in your score within one or two statement cycles. A wrong balance that inflated your utilization is often the fastest correction to feel.
Which score do lenders actually use?
Lenders most often use a version of FICO, though the exact version depends on the loan type. Mortgage lenders commonly pull older FICO versions from all three bureaus, while card issuers and auto lenders may use newer FICO models or VantageScore. The free score you see in an app is a real score, it just may not be the same one your lender checks.
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