What Is a Credit Score?
A credit score is a three-digit number — typically ranging from 300 to 850 — that lenders use to assess how likely you are to repay borrowed money. The higher your score, the less risk you pose to lenders, which translates directly into better interest rates, higher credit limits, and easier loan approvals.
The most widely used scoring model is the FICO® Score, though VantageScore is also commonly referenced. Both use similar data, but weight factors slightly differently. Understanding how these scores are built gives you a roadmap for improving them.
The 5 Core Factors of Your Credit Score
1. Payment History (35%)
This is the single most influential factor in your score. Lenders want to know: do you pay on time? Even one missed payment can cause a significant drop, especially if your score was high to begin with. Late payments, collections, bankruptcies, and charge-offs all live in this category and can remain on your report for up to seven years.
- On-time payments: Positive impact — build this consistently.
- Late payments (30, 60, 90+ days): Increasingly damaging the later they go.
- Collections or charge-offs: Serious negative marks.
2. Credit Utilization (30%)
Credit utilization is the percentage of your available revolving credit that you're currently using. If you have a $10,000 credit limit and carry a $3,000 balance, your utilization is 30%. Most experts recommend keeping this below 30%, and ideally below 10% for the best scores.
This factor resets every month when your card issuers report balances, making it one of the fastest levers you can pull to improve your score.
3. Length of Credit History (15%)
Older accounts signal stability to lenders. This factor considers the age of your oldest account, your newest account, and the average age of all accounts. This is why it's generally advisable to keep old accounts open even if you rarely use them — closing them can shorten your average account age.
4. Credit Mix (10%)
Lenders like to see that you can manage different types of credit responsibly. A healthy mix might include a credit card, an auto loan, and a mortgage. You don't need to take on new debt just to diversify, but having a varied credit portfolio does contribute positively.
5. New Credit Inquiries (10%)
Every time you apply for new credit, a hard inquiry is added to your report. A single inquiry typically causes only a minor, temporary dip. However, multiple applications in a short period can signal financial distress to lenders. Rate-shopping for mortgages or auto loans within a short window (typically 14–45 days) is usually treated as a single inquiry by scoring models.
Credit Score Ranges at a Glance
| Score Range | Rating | Typical Impact |
|---|---|---|
| 800–850 | Exceptional | Best rates, easiest approvals |
| 740–799 | Very Good | Strong rates, few denials |
| 670–739 | Good | Average rates, generally approved |
| 580–669 | Fair | Higher rates, some denials |
| 300–579 | Poor | Limited options, secured products |
Key Takeaways
- Pay every bill on time — set up autopay if needed.
- Keep credit card balances low relative to your limits.
- Don't close old accounts unnecessarily.
- Only apply for new credit when you genuinely need it.
- Check your credit report regularly for errors at AnnualCreditReport.com.
Understanding these five factors empowers you to make intentional choices about your credit behavior — and over time, those choices compound into a significantly stronger financial profile.