Credit utilization is the ratio of your current credit card balances to your total credit limits. It accounts for roughly 30% of your FICO score — second only to payment history — and it's the fastest factor you can change. Pay down a balance today and your score can reflect it within one billing cycle.
How Utilization Is Calculated
Utilization is calculated two ways: per card and aggregate (across all cards). Both matter. You can have low aggregate utilization but still be hurt if one card is maxed out.
- Per-card: (Balance ÷ Limit) × 100 for each individual card
- Aggregate: (Total Balances ÷ Total Limits) × 100 across all revolving accounts
- Only revolving credit (credit cards, HELOCs) is included — installment loans like auto loans and mortgages don't factor into utilization
The Key Thresholds
| Utilization | Effect on Score |
|---|---|
| 0% | Slightly worse than 1% — shows no activity |
| 1–10% | Maximum score benefit |
| 10–29% | Good range |
| 30% | Common misconception — this is NOT the target, it's where damage starts |
| 50%+ | Significant score damage |
| 90%+ | Severe damage, same impact as a maxed-out card |
The '30% rule' is widely misunderstood. Keeping utilization under 30% doesn't mean 30% is fine — 30% is actually the threshold where your score begins to be significantly penalized. For the best scores, aim for under 10%.
When Is Your Balance Reported?
Most card issuers report your balance to the credit bureaus on your statement closing date — not your payment due date. This means even if you pay your balance in full every month, a high statement balance is being reported and hurting your utilization.
To optimize reported utilization: pay your balance down to under 10% of your limit a few days before your statement closing date. The statement balance is what gets reported — not what you owe on the due date.
6 Strategies to Lower Your Utilization
- Pay before the statement close date — not just before the due date
- Make multiple payments per month to keep the running balance low
- Request credit limit increases from your card issuers — same balance + higher limit = lower utilization
- Spread balances across multiple cards rather than concentrating on one
- Keep old, unused cards open — they contribute available credit with zero balance
- Open a new card (only if you qualify) to add available credit
Requesting a Credit Limit Increase
Most major card issuers allow you to request a credit limit increase online or by calling the number on the back of your card. You'll typically be asked for your current income. Key things to know:
- Some issuers do a soft pull (no score impact) for existing cardholders; others do a hard pull — ask which before requesting
- Waiting 6–12 months after opening a card before requesting an increase gives the best results
- Issuers are more likely to grant increases to accounts with on-time payment history
- If denied, you can try again in 6 months — don't apply repeatedly
How Fast Will Utilization Changes Show?
Because utilization is recalculated every month based on your current balances, improvements reflect quickly. Pay down a card balance before the statement closes this month and your score can increase next month — sometimes by 20–50 points or more, depending on how much you reduce.