Your credit utilisation (the amount of your credit limit that you’re using) is a key factor in determining your credit score.

If your credit cards are all maxed out, it suggests that you’re struggling to manage your borrowing and your credit score could drop. But if you only use a small amount of your total limit, you could give your credit score a boost.

Remember, a higher credit score may mean lenders see you as lower risk when you apply for credit cards. That can mean lower interest rates, higher credit card limits, and longer 0% offers - though approval always depends on the lender's own checks.

What deals could you get? With ClearScore, see your credit card offers. ClearScore is a credit broker, not a lender.

Your credit utilisation is the percentage of your credit limit that you’re using.

If you have a credit card with a limit of £2,000 and you spend £1,000 during the month, your credit utilisation will be 50%.

Credit utilisation doesn't just work across one card. You can also calculate how much of your total available credit limit you are using.

Learn more: What is a credit limit and how does it affect your credit score and report?

What’s the ideal level of credit utilisation?

As a general rule of thumb, try to keep credit utilisation below 30% of your limit. There's no universal cut-off, because every lender uses its own scoring model, but lower usage shows you're managing your credit well and are far from overspending.

There are no fixed thresholds that apply across all UK lenders, but the higher your utilisation climbs, the greater the likely impact: using around half your limit may start to count against you, and sitting close to your limit is more likely still to weigh on your score. If you go over your credit limit, not only will this negatively impact your score, but you could get hit with a fee.

Keeping utilisation low is the aim, and 0% isn't harmful in itself - but a card you never use generates no new activity. Lenders look at your overall payment history and how actively you manage your accounts, so a dormant card simply gives them less evidence of your creditworthiness. It’s all about using credit little and often, to maintain a healthy balance.

Learn more: What's the ideal level of credit utilisation?

What your utilisation percentage says to lenders

Lenders don't just see a balance - they see a proportion. The same £600 balance looks careful on a £5,000 limit and stretched on a £750 limit. Because utilisation is expressed as a percentage, it lets a lender judge how much headroom you have left without knowing anything else about your finances. Here's how the main bands tend to be read.

Utilisation bands at a glance

Worked example: the same £2,000 limit at each band

Imagine a single card with a £2,000 limit. Spend £400 and you're at 20% - well inside the comfortable band, and the kind of profile that tends to attract lower interest rates and longer 0% offers. Let that balance drift to £900 and you're at 45%: still manageable, but you've moved out of the zone lenders like best. At £1,300 you're at 65%, and at £1,700 you're at 85% - the point where a lender scoring a new application may well price you higher or decline you outright, even if every payment has been made on time.

The same maths applies across all your cards combined. Two cards with £2,000 limits each give you £4,000 of available credit, so a £900 balance on one card is 45% on that card but only 22.5% overall. Most lenders look at both figures, which is why a single heavily used card can drag on your profile even when your total borrowing looks modest.

Why 0% isn't the goal

It's tempting to read the table and aim for zero, but an unused card gives a lender nothing to assess. Credit scoring rewards evidence that you can borrow and repay reliably, and that evidence only exists if there's activity to record. A small monthly spend - a streaming subscription or a tank of fuel - cleared in full each month keeps utilisation in single digits while still building the repayment history lenders want to see.

How do I keep it low?

To keep your credit usage low, firstly make sure you’re aware of your credit limits across your cards. While your credit card provider has to tell you if they’re changing your limit, it can be hard to keep track of. To make this easy for you, you can see all your credit card limits in your ClearScore account. ClearScore is not a credit reference agency, but we do give you your credit score and report for free using data from Equifax - and checking won't affect your score.

Obviously, the simplest way of keeping your utilisation low is to spend less on your credit card.

But if you do need to spend more than 30% of your limit, you could try these options:

• Spread your payment across two cards, rather than maxing out one card

• Ask your lender to increase your credit card limit (but be careful not to take out more than you can handle)

• Open a new credit card (be aware that applying for a new credit card will result in a hard search on your report, which might cause your score to temporarily drop. How much it affects your score, and for how long, varies between lenders and credit reference agencies - repaying in full each month strengthens your overall profile, though it doesn't erase the search itself.)

Always make sure you can afford repayments.

Top tip: closing an unused card with a high credit limit lowers your total available credit, which could increase your credit utilisation.

A 30 to 90 day plan to lower your utilisation

Utilisation is the fastest-moving factor in your credit score, which makes it the obvious place to start if you want visible improvement inside a month or two. Unlike a missed payment, which sits on your report for six years, your utilisation is recalculated every time your lender reports your balance - usually monthly. Here's how to work through it.

Days 1-7: find your total limit and current balance across every card

• List every credit card, store card and catalogue account, along with its limit and current balance. You can see all your credit card limits in your ClearScore account.

• Add the limits together for your total available credit, then add the balances together for your total borrowing. Divide one by the other for your overall utilisation.

• Work out the percentage on each individual card too - a single card sitting near its limit is often the culprit even when your overall figure looks fine.

Days 7-14: pay down the highest-utilisation card first

• Target the card with the highest percentage used, not necessarily the largest balance. Moving one card from 90% to 50% typically does more for your profile than shaving a little off three cards at 25%.

• Keep every minimum payment running on the other accounts while you do it - a missed payment while you're chasing a utilisation win is a false economy.

Before your statement date: make an extra mid-month payment

• Lenders usually report the balance shown on your statement, not the balance after you've paid it. Paying part of what you owe a few days before the statement is issued means a lower figure lands on your credit report.

• Check your statement date on each card and diarise a payment two to three working days before it, allowing time for the payment to clear.

Days 30-60: request a limit increase or redistribute balances

• A higher limit on the same balance lowers your percentage instantly. Ask your existing lender rather than opening a new account, and only take an increase you're confident you won't use.

• Alternatively, spread the balance across two cards so neither sits near its limit.

• A 0% balance transfer can achieve the same thing while cutting interest, though the application will leave a hard search on your report, and fees, eligibility and the rate after the offer ends may mean it isn't worthwhile.

Days 60-90: keep a small, regular spend going and repay in full

• Once your balances are down, don't let the cards go dormant. Put one predictable monthly cost on each card and clear it in full.

• Resist closing the cards you've just paid off. Closing an account removes its limit from your total available credit and pushes your utilisation straight back up.

What a realistic score change looks like - and what it won't fix

If you're asking how to raise your credit score in 30 days, lowering utilisation is genuinely the lever that can move within a single reporting cycle - often the first month after your reduced balance is reported. What it can't do is manufacture a history you don't have. Going from 500 to 700, or hitting a 700 or 720 score in six months, usually needs consistent on-time payments across several accounts as well as low utilisation, because scoring models weight repayment history over months and years. Treat utilisation as the quick win that buys you a better starting point, then let time and clean payment records do the rest.

Why does low utilisation mean better deals on credit?

Managing your credit card utilisation is a relatively easy way to maintain - or even improve - your credit score. While recovering from a late or missed payment might take months or years, lowering your utilisation is one of the quicker changes that could help your score, though no improvement is guaranteed.

And a higher credit score may mean lenders see you as lower risk. Your chances of approval depend on your credit score and other factors lenders consider - such as your income, existing borrowing, and whether repayments are affordable - but lower rates, higher limits and longer 0% offers become more achievable.

When high utilisation isn't the real problem

Utilisation is powerful, but it isn't the only thing lenders look at - and for some people it isn't the thing holding them back at all. If you've paid your cards down to single digits and your score has barely moved, something else on your report is doing the damage.

Missed and late payments outweigh utilisation

Payment history carries more weight than any other factor. A single missed payment stays on your credit report for six years, and a default or County Court Judgment weighs heavier still. Utilisation resets every month; a missed payment doesn't. If you're wondering what the biggest killer of credit scores is, it's a pattern of late or missed payments rather than a high balance - high utilisation is a warning sign, but arrears are a proven one.

Wrong credit limit showing on your report - and how to get it corrected

Utilisation is only as accurate as the limit on file. If a lender has reported an out-of-date limit - say £1,000 when you were increased to £3,000 - your utilisation will look three times worse than it really is. The same applies to a closed account still showing a balance, or someone else's account appearing under your name. Errors like these can be put right: raise a dispute with the credit reference agency, which will investigate with the lender and correct or remove information it cannot verify as accurate - data it does verify as accurate will stay on your report. Check the limits shown against your latest statements before assuming your spending is the issue.

Thin files: too little credit history rather than too much use

If you've rarely borrowed, there's simply not enough evidence for a lender to assess. That's a thin file, not a utilisation problem, and paying a card down to zero makes it thinner. The fix is the opposite of what it feels like it should be: use a modest amount of credit regularly and repay it in full, so a track record starts to build.

Recent hard searches and newly opened accounts

Every credit application leaves a hard search on your report, and several in a short window suggests you're hunting for credit. Newly opened accounts also lower the average age of your history. Both effects fade - hard searches stay visible on your credit report for one to two years, depending on the agency, though their influence on scoring usually tapers off well before that - but if you've applied for several products recently, that may be masking the benefit of your lower balances.

How to work out which factor is holding your score back

Read your report factor by factor. Look first for anything marked as late, defaulted or in arrears; then check that every limit and balance matches your statements; then count how many accounts you have and how long they've been open; and finally look at searches from the past twelve months. Whatever appears in that list before utilisation is where your effort will pay off fastest.

Credit utilisation FAQs

When is my credit utilisation reported to the credit reference agencies?

Most lenders report your balance once a month, usually on or shortly after your statement date. That's the figure used to calculate your utilisation - not the balance sitting on your card today. It's why two people who spend and repay identically can show very different utilisation: one clears the card before the statement is issued, the other pays after. If you want a lower figure on file, pay before your statement date rather than by the payment due date.

How quickly can lowering my utilisation improve my credit score?

Faster than almost any other change you can make. Once your lender reports a lower balance - typically within one monthly cycle - your utilisation updates and your score can respond at the next refresh. That makes it the most realistic answer to how to raise your credit score in 30 days. Do bear in mind it improves your score from wherever it currently sits; it can't outweigh recent missed payments or a default sitting on your report.

Does paying my balance in full each month mean my utilisation is 0%?

Not necessarily. If your lender reports your statement balance, the amount you spent that month is what shows on your report, even though you clear it in full and pay no interest. Paying in full is excellent for your repayment history and your wallet, but it doesn't automatically produce a 0% utilisation figure. To lower the reported number, make a payment before the statement is generated.

Does my overdraft count towards credit utilisation?

An arranged overdraft is a form of revolving credit and appears on your credit report with a limit and a balance, so a persistently overdrawn current account can be read much like a maxed-out card. Not every scoring model treats it identically to a credit card, but sitting at or near your overdraft limit month after month is a signal lenders notice. Bringing the account back into credit for at least part of each month helps.

Do loans, car finance or buy now pay later affect utilisation?

Personal loans, car finance and mortgages are instalment credit - a fixed amount repaid over a set term - so they don't have a limit to be a percentage of and aren't part of your utilisation. They still appear on your report and affect your overall profile and affordability. Buy now pay later is increasingly reported to the credit reference agencies; how it's treated varies by provider, but missed BNPL payments can show up like any other arrears.

Is high utilisation the biggest killer of a credit score?

It's one of the biggest, but missed payments and defaults do more lasting harm. High utilisation suggests you might be struggling; arrears show that you did. The important difference is recovery time - utilisation can be corrected within a month, whereas a default stays on your report for six years. If both apply to you, fix the utilisation for the quick gain and then focus on an unbroken run of on-time payments.

Does a credit limit increase always lower my utilisation?

Mathematically, yes: the same balance against a larger limit produces a smaller percentage. In practice it only helps if you don't spend the extra headroom. A £600 balance is 60% of a £1,000 limit and 30% of a £2,000 limit - but if the increase tempts you up to £1,200, you're back where you started with more debt. Some lenders also carry out a check before granting an increase, and taking on more available credit can affect future affordability assessments.

What happens to my utilisation if I close a credit card?

Closing a card removes its limit from your total available credit, which pushes your utilisation up on the balances that remain. If you hold two cards with £2,000 limits and owe £600 on one, your overall utilisation is 15%. Close the empty card and the same £600 becomes 30%. Unless the card carries a fee or you genuinely can't trust yourself with it, leaving it open with a small regular spend is one option - though keeping a card solely to influence your score isn't always worthwhile.