What Is Credit Utilization?
Credit utilization is the percentage of your available credit that you're using. Learn why it's the second biggest factor in your credit score and how to optimize it.
Definition
Credit utilization is the ratio of your credit card balances to your total credit limits, expressed as a percentage. If you have $3,000 in credit card balances and $10,000 in total credit limits, your utilization is 30%. It is the second most important factor in your FICO credit score (30%), right behind payment history.
Lower utilization is better. Experts recommend keeping utilization below 30%, and below 10% is ideal for the highest credit scores. Utilization above 50% starts to seriously damage your score. Maxing out your cards (100% utilization) is one of the fastest ways to tank your credit score, even if you pay on time.
Credit utilization is calculated both per-card and overall. Having one maxed-out card and one empty card gives you 50% overall utilization but 100% utilization on the maxed card -- both hurt your score. Spreading balances across cards or paying down the highest-utilization card first can improve your score.
Real-World Example
You have two credit cards: Card A with a $5,000 limit and $4,000 balance (80% utilization) and Card B with a $15,000 limit and $1,000 balance (7% utilization). Your overall utilization is $5,000/$20,000 = 25%, which is okay. But Card A's 80% utilization is dragging your score down. Paying Card A down to $500 (10% utilization) would likely boost your credit score by 30-50 points within a month or two.
Why It Matters
Credit utilization is the fastest lever you can pull to improve your credit score. Unlike payment history (which takes years to build) or length of credit history (which you cannot speed up), you can lower utilization in a single billing cycle by paying down balances. Before applying for a mortgage or car loan, paying down credit cards to below 10% utilization can meaningfully improve the rate you qualify for.
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Frequently Asked Questions
What is the ideal credit utilization?
Below 10% is ideal for the highest credit scores. Below 30% is the commonly cited threshold. Above 50% starts to significantly damage your score. 0% is not necessarily better than 1-5% -- some utilization shows you actively use and manage credit.
When is credit utilization calculated?
Your credit card company reports your balance to the credit bureaus once per month, usually on your statement closing date. Your utilization at that moment is what gets reported. You can strategically pay down cards before the statement date to show lower utilization.
Should I request credit limit increases?
If you can trust yourself not to spend more, yes. A higher limit with the same balance lowers your utilization ratio. Going from a $5,000 limit to $10,000 with a $1,000 balance drops utilization from 20% to 10%.
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