HowCreditScoresWork

Your credit score is a three-digit number (almost always between 300 and 850) that lenders use to estimate how likely you are to pay back money you borrow ⁶ . A higher number signals lower risk, which can mean easier approval and better interest rates. A lower number doesn’t lock you out of credit, but it usually means fewer options and higher costs.

Here’s the first thing most people get wrong: there isn’t one credit score. You have many. Different companies build different scoring models from the information in your credit reports, so the number changes depending on who’s calculating it. The two model families you’ll meet most are FICO and VantageScore.

• Poor 300–579
• Fair 580–669
• Good 670–739
• Very Good 740–799
• Exceptional 800–850

What goes into a FICO score

FICO sorts the data from your credit report into five categories ¹ . These are FICO’s published weights for its most widely used scores. Watch the gauge fill as each one stacks up:

The five FICO factors, sized by weight.

1. 35%

   Payment history

   Whether you pay on time, the single biggest factor.

2. 30%

   Amounts owed

   How much you owe, mostly your credit utilization.

3. 15%

   Length of history

   How long your accounts have been open.

4. 10%

   New credit

   Recent applications and new accounts.

5. 10%

   Credit mix

   The variety of credit you manage well.

Two things jump out. First, paying on time is the single biggest factor: more than a third of the whole score ¹ . Second, “amounts owed” is mostly about credit utilization: the share of your available credit you’re actually using.

35% of a FICO score is your payment history: the single biggest lever in whether your score rises or falls.

24% utilization $240 of $1,000 limit

What the ranges mean

FICO groups scores into five bands. They’re guidelines, not promises. Every lender sets its own bar for what it will approve and at what rate.

• Poor (300–579): building or rebuilding. Secured cards and credit-builder products are designed for this stage.
• Fair (580–669): more options open up, though rates are still on the higher side.
• Good (670–739): the band where many mainstream cards and loans become available.
• Very Good (740–799): you’ll typically see competitive rates from most lenders.
• Exceptional (800–850): the best pricing on offer. Worth knowing: you don’t need a perfect score to get great terms. The difference between 760 and 800 is often small in practice.

FICO vs. VantageScore

Both models run from 300 to 850, and both weigh similar behavior, but they’re built by different companies.

• FICO is made by Fair Isaac Corporation. FICO Score 8 is the version most lenders use today, with FICO 9, 10, and 10T also in the market ² . FICO says its scores are used by 90% of top U.S. lenders ³ .
• VantageScore is a joint venture of the three credit bureaus: Equifax, Experian, and TransUnion. VantageScore 4.0 is its most widely used model, with 5.0 the newest release ⁴ .

The free score in your bank or credit card app is often a VantageScore or a FICO score, and it may differ by 20 points or so from the one a specific lender pulls. That’s normal: different models, different bureaus, different days.

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Why your score matters

Your score mostly shapes the terms you’re offered, not just a yes or no. A higher score typically means a lower annual percentage rate (APR), and a lower APR means you pay less interest over the life of a loan.

Take a mortgage or an auto loan: a borrower with an exceptional score and one with a fair score might be quoted noticeably different rates on the same loan, and over many years that gap can add up to real money. (Exact rates depend on the lender, the loan, and the market; these aren’t fixed.)

The score isn’t just a yes or no. It quietly sets the price you pay to borrow, often for years at a time.

How to check your score, for free

• AnnualCreditReport.com is the official source for your credit reports. You can now get a free report from each bureau every week, permanently ⁹ . Reports aren’t scores, but errors on them can drag a score down, so this is where to start.
• Many credit card and bank apps show a free score, often updated monthly.

And to clear up a common worry:

How to move it in the right direction

No one can promise you a specific number of points: how much and how fast a score changes depends on your individual credit profile. But the levers that matter most are clear:

1. Pay every bill on time, every time. It’s 35% of the score, and it’s the habit that helps most.
2. Keep balances low relative to your limits, especially before a statement closes ⁵ .
3. Be patient and consistent. Building credit is gradual; steady, on-time months are what move the needle.

One honest note on setbacks: a late payment is negative information that can stay on your report for up to seven years (most negative items do; bankruptcies can stay up to ten) ⁸ . There’s no fixed “points lost” for a late payment; the impact depends on your whole profile. That’s exactly why protecting your payment history is worth the effort.