Credit Utilization Calculator
Calculate your overall and per-card credit utilization ratios and find the exact balance paydown needed to reach credit score optimization tiers.
Credit Utilization Ratio Formulas
Overall Utilization % = (Total Balances / Total Credit Limits) × 100 | Per-Card Utilization % = (Card Balance / Card Limit) × 100- Total Balances: Sum of reported statement balances across all revolving cards.
- Total Credit Limits: Combined credit lines provided by all card issuers.
- Target Tiers: Under 10% (Exceptional / Score Maximizing), 10%–29% (Good), 30%–49% (Moderate Risk), 50%+ (High Risk / Score Drop).
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Credit scoring models (FICO and VantageScore) evaluate both aggregate utilization and individual card utilization.
Frequently Asked Questions
Why does credit utilization affect credit scores so heavily?
Amounts owed accounts for roughly 30% of your FICO score. High utilization signals financial distress and higher default probability, whereas low utilization demonstrates responsible credit management.
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