What Is a Credit Score? Everything You Need to Know

Miguel BottMarch 24, 2026March 24, 2026No tags

A credit score is a three-digit number—typically ranging from 300 to 850—that represents your creditworthiness based on your borrowing and repayment history. Lenders use it to decide whether to approve you for loans, credit cards, and mortgages, and what interest rate to charge you. If you’ve been wondering “what is a credit score,” the higher your score, the less risk you represent to lenders, which often translates to significantly lower monthly payments on your debt.

The most widely used scoring model is the FICO Score, created by Fair Isaac Corporation. VantageScore is the other major model. Both use similar factors and produce scores in the same 300-850 range.

Credit Score Ranges

Score Range	Rating	What It Means
800-850	Exceptional	Best rates available; easy approval
740-799	Very Good	Near-best rates; strong approval odds
670-739	Good	Average rates; approved for most products
580-669	Fair	Higher rates; limited product access
300-579	Poor	Difficult to get credit; very high rates

What Goes Into Your Credit Score?

Your FICO score is calculated from five factors, each weighted differently:

Factor	Weight	What It Measures
Payment history	35%	Do you pay on time?
Amounts owed (utilization)	30%	How much of your available credit are you using?
Length of credit history	15%	How long have you had credit accounts?
Credit mix	10%	Do you have different types of credit?
New credit	10%	Have you recently applied for new credit?

Payment history and utilization together make up 65% of your score – focus on these two first.

The Credit Utilization Rule

Utilization is your credit card balance divided by your total credit limit. If you have a $10,000 limit and carry a $3,000 balance, your utilization is 30%.

Utilization Rate	Impact on Score
Under 10%	Excellent impact
10-30%	Good impact
30-50%	Moderate negative impact
Over 50%	Significant negative impact

Keeping utilization below 30% is widely recommended. Below 10% is even better for maximizing your score.

What Hurts Your Credit Score?

Missing payments – a 30-day late payment can drop your score 50-100 points
High credit card balances – high utilization drags your score down month after month
Closing old accounts – reduces your credit limit and shortens your history
Applying for too much new credit – multiple hard inquiries in a short period signal risk
Collections and charge-offs – unpaid debt sent to collections is severely damaging
Bankruptcy – stays on your report 7-10 years and dramatically lowers your score

How to Improve Your Credit Score

Action	Timeline	Impact
Pay all bills on time	Ongoing	High – 35% of score
Pay down credit card balances	1-2 months	High – especially if utilization is high
Don’t close old credit cards	Immediate	Medium – preserves history and limit
Dispute errors on credit report	30-45 days	High if errors exist
Become an authorized user	1-2 months	Medium
Request a credit limit increase	Immediate	Medium – lowers utilization ratio

Where to Check Your Credit Score

AnnualCreditReport.com – free full credit reports from all three bureaus (Equifax, Experian, TransUnion)
Credit Karma – free VantageScore from TransUnion and Equifax
Your bank or credit card – many now offer free FICO score access

The Bottom Line

Your credit score is one of the most financially consequential numbers in your life. A difference of 100 points on a 30-year mortgage can cost or save you tens of thousands of dollars in interest. The formula is simple: pay on time, keep balances low, and don’t open more credit than you need. Build that habit and the score takes care of itself.

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