Credit utilization is the ratio of your credit card balances to your credit limits. If you have a $10,000 credit limit and carry a $3,000 balance, your utilization is 30%. It’s the second most important factor in your FICO score — accounting for roughly 30% of the calculation — and one of the easiest to improve.
Here’s exactly how it works and what to do about it.
How credit utilization is calculated
Your FICO score looks at utilization two ways:
Overall utilization: Total balances across all cards ÷ total credit limits across all cards.
Per-card utilization: Balance on each individual card ÷ that card’s limit.
Both matter. A single maxed-out card hurts your score even if your overall utilization is low.
Example:
- Card A: $500 balance, $5,000 limit → 10% utilization
- Card B: $2,800 balance, $3,000 limit → 93% utilization (problem)
- Overall: $3,300 ÷ $8,000 = 41% (also a problem)
Most scoring models use the balance reported on your statement closing date — not your current balance. Your card reports to the bureaus once per month, typically at statement close. The balance shown on your statement is what counts, not what you pay.
What utilization ratio to target
The conventional wisdom is “keep utilization below 30%.” That’s a floor, not a target.
Research on FICO scoring shows the best scores are typically associated with utilization under 10% — ideally under 6%. There’s no magic number, but lower is better, and the improvement curve is steepest between 30% and 10%.
Practical targets:
- Excellent: Under 10% overall, under 10% on each card
- Good: 10–20%
- Acceptable: 20–30%
- Hurts your score: Above 30%, increasingly so above 50%
- Severely damaging: Above 75%
Why people are confused about this
Myth: You need to carry a balance to build credit.
False. Carrying a balance means paying interest for no benefit. Using your card and paying it in full each month reports activity and builds credit. A zero balance after payment is fine — the issue is what’s reported at statement close, not what you pay.
Myth: Paying on time is all that matters.
Payment history is the biggest factor, but utilization is second. You can pay on time every month and still have a mediocre score if your utilization is high.
Myth: Utilization damage is permanent.
Unlike late payments (which stay on your report for 7 years), utilization has no memory. Pay down your balance and your score recovers at the next reporting cycle — typically within 30 days.
How to lower your utilization
Pay before the statement closing date. Your statement balance is what gets reported. If you pay down your balance a few days before your closing date, a lower number gets reported to the bureaus. You can find your closing date on your statement or in your account dashboard.
Make multiple payments per month. If you use your card heavily each month, your balance may be high when the statement closes even if you always pay in full. Pay mid-cycle to keep the reported balance low.
Request a credit limit increase. Same balance, higher limit = lower utilization ratio. Most issuers allow limit increase requests online without a hard pull if it’s been 6+ months since your last increase. A $5,000 card going to $8,000 instantly drops a $1,500 balance from 30% to 18.75%.
Open a new card. Adds credit limit to the denominator. Also adds a hard inquiry and a new account, which have short-term negative effects — but the utilization improvement often outweighs these within a few months.
Pay down high-utilization cards first. If you’re carrying balances across multiple cards, prioritize the ones with the highest per-card utilization, not necessarily the highest balances.
When utilization changes don’t help
When you’re applying for a mortgage: Lenders look at your report at a specific moment. You can lower utilization before the pull by paying down balances — a technique called “rapid rescoring” when done through a lender. But if your utilization is habitually high, lenders see patterns across months of statements.
When the problem is payment history: If you have late payments, those matter more than utilization in most models. Optimizing utilization while ignoring late payments is the wrong priority.
When your score is already excellent: Going from 5% to 2% utilization has negligible scoring impact if you’re already at 800+. Optimization below 10% is mostly irrelevant.
Utilization and the FICO score models
Different lenders use different FICO versions. FICO 8 (the most common) treats utilization as described above. FICO 9 and VantageScore 4.0 give slightly less weight to medical debt and have minor differences in utilization calculation, but the fundamentals are the same.
Some newer models (FICO 10 T) look at “trended data” — the direction of your balances over 24 months, not just the snapshot. Rising balances hurt more than a static high balance. Falling balances can help even if utilization is currently above 30%.
FAQ
Does closing a credit card hurt my utilization?
Yes. Closing a card removes its credit limit from the equation, raising your utilization ratio. If the card has a significant limit, consider downgrading to a no-fee product instead of closing.
Does utilization affect my score if I pay in full every month?
Yes — because utilization is based on the statement balance, not what you pay. Your payment eliminates the balance but the reporting has already happened for that cycle. Pay before the statement closes to report a lower balance.
Will a $0 reported balance hurt my score?
No. Zero utilization on individual cards is fine. Some scoring models do want to see at least one card reporting a balance greater than $0 overall — but a single card with a small balance handles this.
How quickly does my score recover after paying down debt?
Typically one billing cycle — 30 days or less. Utilization is recalculated fresh each month based on what’s currently reported. There’s no penalty for previous high utilization once it’s resolved.