Credit Utilization: What It Is and Why It Matters

Credit utilization is the percentage of your available revolving credit that you’re currently using. If you have $10,000 in total credit card limits and $2,500 in balances, your utilization is 25%. It’s a major part of the “amounts owed” category, which makes up about 30% of a FICO score, and because it’s based on your current balances, it’s one of the fastest parts of your score you can change.

Below you’ll see how to calculate it, what ratio to aim for, how timing affects what gets reported, and a worked example with two cards.

How to calculate your utilization

There are two numbers that matter:

1. Overall utilization: Add up all your card balances, add up all your card limits, and divide the first by the second.
2. Per-card utilization: Divide each card’s balance by that card’s limit.

myFICO explains that FICO scores look at utilization both on individual cards and across all your cards. So a low overall ratio can still hide one card that’s nearly maxed out.

A worked example: two cards

Say you have two credit cards:

Your overall utilization is 24%, which looks fine. But Card A is at 80%, close to its limit, and that high per-card figure can weigh on your score too.

What happens if you close Card B?

Suppose you close Card B because you never use it. Your balance stays at $2,400, but your total limit drops to $3,000. Overall utilization jumps from 24% to 80% overnight, with no new spending at all. This is why closing unused no-fee cards can backfire.

Paying Card A down

If Card A charges a 21% APR and you stop using it, here’s how long it takes to clear:

Paying $400 a month cuts the payoff time in half and saves about $159 in interest. As the balance shrinks, both the per-card ratio on Card A and your overall ratio fall with it. You can model your own cards in the credit card payoff calculator.

What utilization ratio should you aim for?

You’ve probably heard “keep it under 30%.” That’s a common guideline: the CFPB says experts advise using no more than 30 percent of your total credit limit, and its rebuilding guide adds that some experts say under 10 percent.

FICO’s own guidance is more nuanced. myFICO says the data doesn’t support the idea that your score suddenly drops once you cross 30%, and that, generally, the lower your ratio, the better. It suggests that keeping utilization below 10%, along with paying on time, can help you build and maintain a good score.

A practical way to think about it:

Don’t take these bands as hard cutoffs. Utilization is one part of your score, and the way it interacts with the rest of your credit profile varies.

Why the timing of your payment matters

Here’s a detail that surprises many people: paying your bill in full every month doesn’t guarantee your utilization shows as 0%. Card issuers typically report your balance when your statement closes, not on your payment due date.

Say you charge $1,500 a month on a card with a $5,000 limit and always pay the full statement balance by the due date. You never pay interest, but the bureaus see a $1,500 balance each month, which is 30% utilization. If you make a payment a few days before the statement closes, the reported balance, and your utilization, can be much lower.

This matters most in the month or two before you apply for a mortgage or car loan, when you want your reported balances as low as possible.

How to lower your credit utilization

1. Pay down balances. This is the most direct fix. Focus first on any card above about 30%, or follow a payoff method like the ones in our guide to debt snowball vs. debt avalanche.
2. Pay before the statement date. Making a mid-cycle payment lowers the balance that gets reported.
3. Spread out spending. If you put everything on one card, moving some recurring charges to another card can keep any single card from running high, as long as you pay both in full.
4. Keep unused cards open. If they’re free to keep, their limits help your ratio.
5. Ask for a higher limit. A higher limit lowers your ratio, but only if your spending stays the same. Ask whether the request involves a hard inquiry.
6. Consider consolidating at a lower rate. Moving card debt to an installment loan can lower your card utilization and your interest cost, but only if you don’t run the cards back up. Compare the APR and fees first; our guide to APR vs. interest rate explains how.

What counts toward utilization

• Credit cards are the main component, including cards on which you’re an authorized user.
• Closed cards that still carry a balance may still count.
• Home equity lines of credit are often excluded from revolving utilization in FICO scoring.
• Installment loans like car loans, student loans and mortgages are evaluated separately, based on how much you still owe compared with the original amount.

Is 0% utilization the goal?

Not exactly. myFICO notes that a 0% ratio won’t hurt you much, but it can keep you from earning the maximum points in this category. Using a card for a small regular bill and paying it off shows that you use credit responsibly. There’s no reason to carry a balance and pay interest, though; a reported balance from your statement is enough.

Planning ahead of a big loan application

If you’re planning to apply for a mortgage, car loan or new card in the next few months, utilization is one of the few parts of your score you can improve on a short timeline. A simple plan:

1. Two to three months ahead: Pull your credit reports and confirm every card shows the correct credit limit. A missing or wrong limit can make your utilization look higher than it really is.
2. Pay down the highest-ratio cards first, so no single card stands out.
3. Look up each card’s statement closing date and make your payment a few days before it, so the reported balances are low.
4. Hold off on large purchases on your cards until after the loan closes.
5. Avoid closing accounts or opening new ones during this period, since both can shift your utilization and other score factors.

Common utilization mistakes

• Assuming paying in full means 0%. As shown above, the reported balance usually comes from your statement.
• Watching only the overall number. One maxed-out card can matter even when your total looks fine.
• Running balances back up after a payoff. The improvement only lasts while balances stay low.

Utilization is powerful, but it isn’t everything

Because high utilization can be fixed in a month or two, it’s tempting to focus on it alone. But payment history carries even more weight, and a single missed payment can do longer-lasting damage. Our guide on how credit scores are calculated shows how all five factors fit together, and how to improve your credit score turns them into a plan.

The bottom line

Credit utilization is your card balances divided by your card limits, measured overall and card by card. Lower is generally better, with under 10% a strong target and under 30% a common rule of thumb. To bring it down, pay balances off, time a payment before your statement closes, and keep no-fee cards open. In the example above, closing one unused card would have pushed utilization from 24% to 80%, while paying $400 a month would clear the problem card in seven months.

This content is for educational purposes only and isn't financial advice. Calculator results are estimates based on the numbers you enter. For decisions about your situation, consider talking with a qualified professional. Read our full disclaimer.