Lesson 2 of 7 14 min
Credit Scores
What goes into a score, why it matters, and how to build one from zero.
Written by Mateo LermaLast reviewed 4 sourcesEditorial standards
All lessons in Credit & Debt
Step 1: The lesson
What is a credit score?
A credit score turns your credit report into one number: a quick estimate of how likely you are to repay. The most common, the FICO Score, runs from 300 to 850. Higher means lower risk to lenders.
FICO publishes what goes into its scores. Payment history matters most, followed by how much you owe compared with your limits. The rest comes from how long you've had credit, how often you apply for new credit, and the mix of credit types.
Key term
Credit utilization
How much of your available credit you're using. A $300 balance on a $1,000 limit is 30% utilization. Lower is better.
Your score does not include your income, savings, job, age, race, religion, or where you live. It's only about how you've handled borrowing.
Scores matter because they change prices. A higher score can mean a lower interest rate on a car loan, an easier apartment approval, and smaller deposits for utilities and phone plans.
Key term
Hard vs. soft inquiry
When you apply for credit, the lender makes a "hard" inquiry, which can lower your score slightly for a while. Checking your own score is a "soft" inquiry and has no effect.
Building a score from zero
Pay every bill on time, keep balances low, and don't open lots of new accounts at once. Time does the rest.
Step 2: See it
What goes into a FICO Score
According to FICO, payment history makes up 35% of a score, amounts owed 30%, length of credit history 15%, new credit 10%, and credit mix 10%.
Step 3: Real-world example
Same car, different score
Two buyers each finance a $20,000 car over 5 years. Because of their credit scores, they're offered different rates (hypothetical examples):
- Strong credit, 7% APR: about $396/month, $3,761 total interest
- Weaker credit, 12% APR: about $445/month, $6,693 total interest
Same car. The buyer with weaker credit pays about $2,932 more — just for having a lower score.
Step 4: Try it
See what the rate does
Keep the loan the same and change only the interest rate. Watch the total interest.
Your numbers
Results
Monthly payment
$396.02
60 payments at 7% APR
Amount borrowed
$20,000
Total interest
$3,761
16% of what you pay
Total of payments
$23,761
- Principal (amount borrowed) $20,000
- Interest $3,761
Show year-by-year breakdownHide breakdown
| Year | Principal | Interest | Balance left |
|---|---|---|---|
| 1 | $3,462 | $1,290 | $16,538 |
| 2 | $3,712 | $1,040 | $12,826 |
| 3 | $3,981 | $772 | $8,845 |
| 4 | $4,268 | $484 | $4,577 |
| 5 | $4,577 | $175 | $0 |
Educational calculator, not financial advice. Results are hypothetical estimates based on the numbers you enter.
Step 5: Knowledge check
Quiz: Credit Scores (4 questions)
Answer each question, then check your answer to see the explanation. Retake it as many times as you like.
Question 1 of 4
Step 6: Summary
Summary: Credit Scores
A credit score summarizes your report into a number from 300 to 850. Payment history and amounts owed matter most. Scores don't include income or personal traits, but they change what you pay to borrow and how easily you're approved.
Step 7: What you should remember
Key takeaways: Credit Scores
- FICO Scores run 300–850. Higher = lower risk.
- Payment history (35%) and amounts owed (30%) matter most.
- Keep utilization low — well under 30% of your limit is a common guideline.
- Checking your own score doesn't hurt it. Applying for credit can, a little.
Key terms in this lesson
Finished the lesson?
Mark it complete to track your progress.
Sources and further reading
Rules, rates, and official figures in this lesson are based on these sources. People and numbers in examples are hypothetical.
- 1.How are FICO Scores Calculated? (opens in a new tab)
myFICO (Fair Isaac Corporation) · myfico.com
- 2.What is a Credit Score? (opens in a new tab)
myFICO (Fair Isaac Corporation) · myfico.com
- 3.How do I get and keep a good credit score? (opens in a new tab)
Consumer Financial Protection Bureau · consumerfinance.gov
- 4.Annual Credit Report (opens in a new tab)
AnnualCreditReport.com · annualcreditreport.com
Last checked September 2026: FICO Score range and factor weights. Rules and numbers like these can change — check the official source before making a decision.
Cite this lesson
Financial Literacy Club. (2026, September). Credit scores. https://learnwithflc.org/courses/credit-and-debt/credit-scores
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