Key Takeaways
- Credit utilisation accounts for roughly 30% of your FICO score — the second largest factor after payment history.
- Most credit experts suggest keeping utilisation below 30%, with lower generally being better.
- Utilisation is calculated both per card and across all revolving accounts combined.
- Unlike payment history, utilisation can change quickly — paying down balances produces a relatively fast score improvement.
- Closing old credit cards reduces your total available credit and can raise your utilisation rate unexpectedly.
Credit Utilisation
Credit utilisation is the percentage of your available revolving credit that you're currently using. For example, if your credit card limit is $10,000 and your balance is $3,000, your utilisation rate is 30%. It applies both to individual cards and across all your revolving accounts combined. Lenders and credit scoring models treat this ratio as a signal of how responsibly you manage borrowed money.
Credit utilisation is calculated using the balances reported by your lenders to the credit bureaus, which typically happens once per billing cycle — so the timing of when you pay can affect the number that gets reported.
Why Utilisation Carries So Much Weight
If you've ever wondered why your credit score didn't budge even after months of on-time payments, credit utilisation may be the missing piece. According to FICO — the company behind the most widely used credit scoring model in the US — amounts owed on revolving accounts accounts for approximately 30% of your score. That makes it the second most influential factor, just behind payment history.
The underlying logic makes sense from a lender's perspective. Someone who routinely uses a large share of their available credit may be financially stretched, even if they pay on time. Conversely, someone who keeps their balances low relative to their limits signals they aren't dependent on borrowed money to cover day-to-day expenses.
If you're newer to credit concepts, the Debt & Credit: A Starter Map provides helpful foundational context before diving deeper into utilisation strategy.
~30%
Share of FICO score tied to amounts owed
According to FICO's published score factor breakdown, 'amounts owed' — which includes utilisation — is the second largest contributor to a FICO score.
<30%
Commonly recommended utilisation ceiling
Consumer Financial Protection Bureau (CFPB) educational materials and mainstream credit guidance broadly suggest keeping utilisation below 30% to avoid negative scoring effects.
Under 10%
Typical utilisation for highest scorers
FICO data on high-scoring consumers shows that those in the 800+ score range tend to maintain very low utilisation rates, often in the single digits.
How Utilisation Is Actually Calculated
Your utilisation rate is calculated by dividing your current revolving balance by your total revolving credit limit, then multiplying by 100 to get a percentage. Scoring models look at this both on a per-card basis and in aggregate across all your revolving accounts.
Here's a simple example: if you have two credit cards — one with a $5,000 limit carrying a $2,000 balance, and another with a $5,000 limit carrying a $500 balance — your combined utilisation is $2,500 ÷ $10,000, or 25%. But the first card individually sits at 40%, which can still work against you even if the overall rate looks reasonable.
One frequently overlooked detail: the balance reported to the bureaus is typically your statement balance at the close of your billing cycle, not your real-time balance. If you pay your card down two days after the statement closes, the higher balance is what gets reported that month. Paying before your statement closing date — not just before the due date — is a practical way to control what number appears on your credit report.
Practical Ways to Manage Your Rate
Improving your utilisation doesn't require dramatic lifestyle changes. These approaches are commonly used to bring the ratio down:
- Pay down existing balances. Even partial paydowns reduce the numerator in the utilisation equation. Prioritising high-balance cards can have the most immediate effect, especially on per-card utilisation.
- Ask for a credit limit increase. If your account is in good standing, requesting a higher limit increases the denominator — lowering your utilisation rate without requiring you to change spending habits. Be aware that some limit increase requests trigger a hard inquiry.
- Avoid closing unused cards. An open card with no balance contributes available credit to your total limit. Closing it removes that buffer. The Credit Score Myths article covers this and other commonly misunderstood credit decisions.
- Spread balances across cards. If you carry a balance, distributing it more evenly across multiple cards can lower per-card utilisation, even if the total stays the same.
For a broader look at how debt levels interact with your credit profile over time, see How Debt Affects Your Credit Score at Every Stage of Repayment.
Time Your Payments Strategically
Your credit card issuer typically reports your balance to the bureaus around your statement closing date, not your payment due date. Paying down your balance a few days before your statement closes — rather than just before the due date — means a lower balance gets reported. This one timing adjustment can noticeably improve your reported utilisation without requiring you to spend less overall.
Common Situations That Catch People Off Guard
Several everyday scenarios can cause utilisation to spike without the cardholder realising it until they check their score:
- Making a large purchase — Even a planned, affordable expense like a vacation or appliance can temporarily push a card's utilisation well above 30% if the statement closes before you pay it off.
- Issuers reducing credit limits — During economic uncertainty, some issuers quietly lower credit limits, which compresses your available credit and raises your utilisation rate automatically.
- Opening a new card and carrying a balance immediately — New cards have no track record and sometimes lower starting limits. Running up a balance right away can result in high per-card utilisation from day one.
Monitoring your credit report regularly helps you catch these shifts early. Reading Your Credit Report Without Getting Lost walks through exactly how to interpret what you find. For those rebuilding after financial difficulty, Strategies People Use to Rebuild Credit After Financial Setbacks offers a grounded starting point.
This article is for general informational and educational purposes only and does not constitute personalised financial or credit advice. Consult a qualified financial professional for guidance specific to your situation.