What Factors Affect Your Credit Score? (The 5 Components Explained)

Your credit score isn't a mystery — it's a formula. FICO, the most widely used scoring model, calculates your score from five specific factors, each weighted differently. Once you understand these components, you know exactly where to focus to improve your score.

The 5 Factors That Make Up Your FICO Score

• Payment History: 35%
• Credit Utilization: 30%
• Length of Credit History: 15%
• Credit Mix: 10%
• New Credit Inquiries: 10%

1. Payment History (35%) — The Most Important Factor

Did you pay your bills on time? Every payment you make (or miss) is recorded. A single 30-day late payment can drop your score by 60-110 points. Payments that are 60 or 90 days late are even more damaging.

The good news: the impact of late payments fades over time. A late payment from 4 years ago hurts much less than one from 6 months ago. And after 7 years, it disappears from your report entirely.

2. Credit Utilization (30%) — The Fastest to Change

Utilization is how much of your available revolving credit you're using. If you have a $10,000 credit limit and a $6,000 balance, your utilization is 60% — which hurts your score significantly.

Aim for under 30% total, and under 10% for your best possible score. Unlike late payments, utilization resets every month when your new balance is reported — so paying down a card can boost your score within 30 days.

3. Length of Credit History (15%)

This includes the age of your oldest account, your newest account, and the average age of all accounts. Older accounts are better. This is why closing credit cards — even ones you don't use — can hurt your score.

4. Credit Mix (10%)

Lenders like to see that you can manage different types of credit responsibly: revolving credit (credit cards, HELOCs) and installment loans (mortgages, auto loans, student loans, personal loans). Having both types typically helps your score.

5. New Credit Inquiries (10%)

When you apply for new credit, the lender does a 'hard inquiry' that temporarily lowers your score by about 5 points. Multiple hard inquiries in a short period (except for rate-shopping for mortgages/auto loans, which FICO groups together) can add up.

Checking your own credit is a 'soft inquiry' — it has zero impact on your score. Monitor freely.

What This Means for You

Since payment history and utilization together make up 65% of your score, these are where you should focus almost all your energy. Set up autopay for minimums, then aggressively pay down high-balance cards.