What Affects Your Credit Score
Five factors decide your score, and two of them dominate. Knowing them is how you improve it fastest.
Last updated: 2026-07-20
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Your credit score is a number lenders use to price risk. It's built from your credit history, and while the exact formulas are proprietary, the main ingredients are well known.
The five factors
- Payment history (~35%) — paying on time is the single biggest factor.
- Credit utilization (~30%) — how much of your available credit you're using.
- Length of credit history (~15%) — older accounts help.
- Credit mix (~10%) — a blend of loans and cards.
- New credit (~10%) — many recent applications can ding your score.
The fastest lever: utilization
Unlike history length, which you can't rush, utilization changes immediately. Keeping balances below 30% of your limits — and ideally under 10% — can lift your score within a cycle or two. Paying down balances or requesting a limit increase both help.
Check your utilization and payoff plan with the calculators below.
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Key terms
This guide is educational and is not financial, tax, or legal advice. Figures from linked calculators are estimates.