You've probably heard the rule: keep your credit utilization below 30%. It's repeated in every personal finance article, app, and forum. But the 30% figure is a ceiling, not a target-and treating it as your goal may be costing you points.
What Utilization Actually Measures
Credit utilization is calculated two ways: per-card and aggregate. FICO models consider both. A single maxed-out card can hurt your score even if your total utilization looks fine. The model evaluates the ratio on each revolving account independently before calculating the overall average.
The Real Target Range
Data from borrowers with FICO scores above 800 consistently shows utilization under 10%. The most common range is 1–6%. Zero utilization-where cards show no activity-can actually score slightly lower than minimal activity, because lenders want to see you use credit responsibly.
How to Optimize Your Reporting Date
Your utilization is calculated from the balance reported to bureaus on your statement closing date-not your payment due date. Paying down balances a few days before your statement closes is the fastest legitimate way to lower reported utilization without changing your spending.
Key Takeaways
- Under 10% utilization is where scores maximize-not the commonly cited 30%
- Per-card utilization matters as much as your total across all cards
- Pay before your statement closing date to lower reported balances
- Using cards and paying in full is better than leaving cards idle