Credit Scores Explained: What They Are & How to Improve Yours
Learn exactly how credit scores are calculated, what factors matter most, and proven strategies to improve your score quickly and sustainably.
What is a Credit Score?
A credit score is a three-digit number that represents your creditworthiness-essentially, how likely you are to repay borrowed money. This number typically ranges from 300 to 850, with higher scores indicating lower risk to lenders.
Credit scores are calculated using mathematical algorithms that analyze the information in your credit report. While there are many different scoring models, the two most common are:
- FICO Score: Used by 90% of top lenders, ranging from 300-850
- VantageScore: Created by the three credit bureaus, also ranging from 300-850
Your score matters because it affects not just whether you can borrow, but how much it costs. A difference of just 50 points can mean thousands of dollars in interest over the life of a mortgage.
The Five Factors That Determine Your Score
Your FICO credit score is calculated using five key factors, each weighted differently:
1. Payment History (35%): The most important factor. Lenders want to know if you pay your bills on time. Even one late payment can drop your score significantly. A 30-day late payment can lower your score by 60-110 points.
2. Credit Utilization (30%): This is the ratio of your credit card balances to your credit limits. Lower is better-aim for under 30%, ideally under 10%. A $300 balance on a $1,000 limit = 30% utilization.
3. Length of Credit History (15%): Longer credit history is better. This includes the age of your oldest account, your newest account, and the average age of all accounts.
4. Credit Mix (10%): Having different types of credit (credit cards, auto loans, mortgage) can help your score. But don't open accounts you don't need just for variety.
5. New Credit (10%): Each credit application creates a hard inquiry, which can temporarily lower your score. Multiple applications in a short period looks risky to lenders.
Credit Score Ranges Explained
Understanding where your score falls helps you know what to expect when applying for credit:
- 800-850 (Excellent): You'll qualify for the best rates and terms. Only about 21% of consumers have scores in this range.
- 740-799 (Very Good): You'll get very competitive rates. Lenders consider you a low-risk borrower.
- 670-739 (Good): You're near or above average. Most lenders will approve you, though not always at the best rates.
- 580-669 (Fair): You're considered a subprime borrower. You can still get credit, but expect higher interest rates.
- 300-579 (Poor): You'll have difficulty getting approved for most credit products. Focus on rebuilding before applying.
The national average FICO score is around 714, so if you're above that, you're doing better than most Americans.
How to Improve Your Credit Score
Improving your credit score requires a strategic approach focused on the factors that matter most:
Quick Wins (1-30 days):
- Pay down credit card balances to reduce utilization
- Request credit limit increases (without a hard pull when possible)
- Dispute any errors on your credit report
- Become an authorized user on a responsible person's card
Medium-Term Strategies (1-6 months):
- Set up autopay to ensure you never miss a payment
- Pay bills twice a month to keep reported balances low
- Keep old accounts open to maintain credit history length
Long-Term Building (6+ months):
- Add different types of credit responsibly
- Let your accounts age without closing them
- Limit new credit applications to when necessary
Key Takeaways
- 1Payment history (35%) and utilization (30%) are the two biggest factors-focus here first
- 2Scores range from 300-850; above 740 qualifies you for the best rates
- 3You can improve quickly by paying down balances and disputing errors
- 4Never miss a payment-it's the single most damaging thing for your score
- 5Keep old accounts open to maintain your credit history length