Credit Utilisation: The Score Killer Hiding in Your Wallet

Plenty of people who've never missed a payment in their life still get declined for credit — and the reason often isn't anything to do with disputes, errors, or the electoral roll. It's a much quieter factor: how much of their available credit they're actually using.

What credit utilisation actually is

Credit utilisation is the percentage of your total available credit that you're currently using. If you have a credit card with a £2,000 limit and you're carrying a £1,600 balance, your utilisation on that card is 80% — even if you pay on time, every single month, without fail.

Lenders read high utilisation as a signal of financial pressure, regardless of your payment history. It suggests you're relying heavily on credit to get by, which makes some lenders more cautious about extending you more.

Why "always on time" isn't the whole story

Payment history and utilisation are assessed separately. A spotless payment record with consistently high utilisation still reads as higher risk than a spotless payment record with low utilisation — because the two measure different things. One shows whether you pay what you owe. The other shows how stretched you currently are.

What counts as "good" utilisation

There's no single official cut-off, but as a general rule, keeping utilisation below roughly 30% of your available limit — and ideally lower — tends to be viewed more favourably. This applies per card and across your total available credit, so one maxed-out card can drag down your overall picture even if your other accounts look fine.

It's also worth remembering that each bureau holds its own version of your accounts, so your utilisation can look different depending on which report a lender pulls — here's why your three scores never match.

Ways to bring utilisation down

• Pay down the balance — the most direct route, even in smaller regular amounts rather than waiting for a lump sum
• Ask for a limit increase without spending more — this lowers your utilisation percentage even if your balance stays the same, though it's worth checking whether the request itself triggers a hard search first
• Spread balances across cards rather than maxing out one, if you're carrying debt across multiple accounts
• Pay before the statement date, not just before the due date — utilisation is often reported based on your statement balance, not what you owe by the payment deadline

A subtle trap: closing old cards

Closing an old credit card you don't use might feel like tidying up, but it removes that card's available limit from your total — which can push your overall utilisation percentage up, even if your spending hasn't changed. Worth thinking through before closing anything.

Utilisation isn't about how much debt you have in absolute terms — it's about how close to the edge of your available credit you're sitting.