What Is a Credit Score and How Is It Calculated?
A credit score predicts how likely you are to repay borrowed money on time. Most range from 300 to 850. Here is what goes into the number and why it moves.
By Galactic News Editorial · Published 2026-11-08T13:29:31+00:00 · Updated 2026-11-08T13:29:31+00:00
What Is a Credit Score and How Is It Calculated?
The number predicts how likely someone will repay borrowed money on time, based on information in their credit reports. That definition comes from the Consumer Financial Protection Bureau. Most numbers run from 300 to 850. Higher numbers signal lower predicted risk to a lender. This article explains the number and the math behind it, as general education only, not personal financial advice.
Where the score comes from
Three nationwide bureaus, Equifax, Experian, and TransUnion, collect borrowing history into reports. Lenders send account, balance, and payment records to the bureaus. Scoring models then turn report data into three-digit numbers. FICO leads the market for scoring models. VantageScore ranks as the main alternative. The two models use the same bureau data but weigh it differently, so figures can differ by model and by bureau. You do not hold just one number. The figure depends on the data used, the model, the loan product, and even the day it was calculated.
How FICO builds the number: five factors
| Factor | Typical weight | Coverage |
|---|---|---|
| Payment history | 35% | Whether you paid accounts on time; late payments, collections, and bankruptcies |
| Amounts owed | 30% | Total debt and how much of your available credit you use |
| Length of credit history | 15% | Age of your oldest, newest, and average accounts |
| New credit | 10% | Recent applications and hard inquiries from the last 12 months |
| Credit mix | 10% | Variety of account types, such as cards, auto loans, and mortgages |
Payment history carries the largest weight because past payment behavior predicts future payment behavior best, according to myFICO. Amounts owed mostly means credit utilization: the share of available revolving credit that you use. $3,000 owed against a $10,000 limit means 30 percent utilization. Lower utilization generally reads as lower risk. The weights are typical, not fixed: FICO notes that the importance of each factor can vary with the information in your own report.
Ranges: reading the bands
| FICO range | Rating | How lenders read it |
|---|---|---|
| 300 to 579 | Poor | Well below the average consumer; risky borrower |
| 580 to 669 | Fair | Below average; many lenders still approve loans |
| 670 to 739 | Good | Near or slightly above average; most lenders consider this good |
| 740 to 799 | Very good | Above average; dependable borrowers |
| 800 to 850 | Exceptional | Well above average; best offers and lowest rates |
These bands come from myFICO. Higher bands usually mean easier approval and lower interest rates, but lenders also weigh income, debts, and the loan itself. The number serves as one input among several.
Left out of the number
Income, age, and address do not factor into FICO numbers. Neither do employer, job title, or employment history. Federal law bars scoring models from weighing race, religion, sex, marital status, or national origin. Payments generally stay off reports until 30 days past due, so payments a few days late may cost fees but usually do not reach your report. One or two late payments do not automatically sink the number, according to myFICO, though severe or repeated late payments do heavy damage.
Why figures differ across bureaus
Each bureau holds its own file. Lenders do not always report to all three bureaus, and updates land on different days. One bureau may show an account that another lacks. Models also differ: FICO and VantageScore weigh the same file differently, and lenders use different versions for different products. Mortgage lenders often pull older FICO versions, while card issuers may pull newer ones. Timing matters too: balances paid down yesterday may not show until the next reporting cycle. Comparing figures from different bureaus on different days mixes all three effects at once.
Check reports and fix errors
- Step 1: Get your reports. Free copies of your reports come from each bureau. Many card issuers also show one free.
- Step 2: Read every account. Look for accounts you do not recognize, wrong balances, and payments marked late that you paid on time.
- Step 3: Dispute errors with the bureau. File a dispute with the bureau that shows the error. The bureau must investigate and correct mistakes.
- Step 4: Recheck after the fix. Numbers update as the underlying report data changes, so verify the correction landed.
Bottom line
The number works as a forecast built from your reports, not a verdict on wealth. Payment history and amounts owed drive about two-thirds of typical FICO figures, so paying on time and keeping utilization low matter most. The number moves as report data moves. Check your reports, fix errors, and remember that you hold several numbers, not one.