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Credit utilisation explained, with a worked example

Credit utilisation is how much of your available credit you are using. It is simple to calculate and easy to improve.

The Vaulta team · · 5 min read

If you have a credit card, you have a limit. Credit utilisation is the share of that limit you are using at a given moment. Lenders and credit reporting agencies in many countries look at it as one signal of how stretched a borrower is.

This article explains the idea in general terms. How credit scores work, what they are called and how much weight utilisation carries differ between countries and between agencies. Treat what follows as the concept, and check the details for where you live.

The calculation

Utilisation = balance divided by credit limit, shown as a percentage.

Example: a card with a limit of 5,000 and a balance of 1,500 has a utilisation of 30 percent.

If you have several cards, you can look at each card and at the total. Add all balances and all limits. A balance of 1,500 on a 5,000 card and 500 on a 3,000 card gives total balances of 2,000 on total limits of 8,000, which is 25 percent overall. The first card on its own is 30 percent, the second is about 17 percent.

Why lenders care

A person using nearly all their available credit looks more likely to struggle with repayments than someone using a small part. That is a statistical pattern, not a personal judgment. Many scoring systems treat lower utilisation as a favourable sign. You will often hear 30 percent given as a rule of thumb. It is not a law, and lower is generally better, but there is no magic threshold that applies everywhere.

When the number is measured

Here is a detail that surprises people. The balance that gets reported to credit agencies is often the balance on your statement date, not the day you pay. So you could pay your card in full every month and still report a high utilisation if your statement date falls when the balance is high. If this matters to you, for example before applying for a mortgage, paying down the card before the statement date can lower the reported figure.

Utilisation is not the same as debt

You can have low utilisation and a lot of debt in other forms, such as a mortgage or a personal loan. And you can have high utilisation on a card that you pay off every month. Utilisation measures use of revolving credit, not your total financial health. It is one input among several.

Ways to lower it

  • Pay more than the minimum. Even a small extra amount reduces the balance faster.
  • Pay before the statement date, if you are preparing for a credit application.
  • Spread spending across cards, if you have several and can manage them responsibly.
  • Ask for a higher limit, only if you will not spend more because of it. Some lenders run a check when you ask, and that can have its own effect.
  • Do not close old cards casually. Closing a card removes its limit from the total and can raise your utilisation on the rest. It may also shorten your credit history.

What not to do

Do not take on new debt just to shuffle balances, and avoid treating the limit as spending money. A limit is the lender's ceiling, not your budget. A good rule is to budget as if the limit did not exist.

A tidy worked case

Example only. You have two cards. Card A: limit 4,000, balance 2,800 (70 percent). Card B: limit 6,000, balance 600 (10 percent). Total: 3,400 on 10,000, or 34 percent.

If you move 1,000 from the monthly budget to pay down Card A, it falls to 1,800 on 4,000 (45 percent), and the total becomes 2,400 on 10,000, or 24 percent. Notice that the card with the highest utilisation is probably also the one costing the most, which is the idea behind the avalanche method. Try both in the debt payoff calculator, and see debt snowball vs avalanche.

Interest matters more than the score

Whatever your score, carrying a balance at a high rate costs real money. Paying a card off in full each month, if you can, avoids interest altogether and keeps utilisation low as a side effect. If you cannot, the priority is the interest, because that is where the cash goes.

Tracking it in practice

You can keep balances and limits as accounts and liabilities in Vaulta by hand, and watch the effect on net worth as the balances fall. Vaulta does not report to credit agencies, calculate credit scores or give credit advice. If you are concerned about debt, speak to your lender or a qualified adviser.

Questions people ask

Does checking my own credit hurt it? In many places, checking your own report is treated differently from a lender checking it when you apply. The details differ by country, so read the explanation from your credit agency.

Is zero utilisation the best? Not always. Some scoring models like to see some activity. What matters more than any target is paying on time and not paying avoidable interest. Do not hold a balance just to show activity.

What if my limit goes down? Lenders can reduce a limit, and your utilisation rises without your spending changing. If that happens, pay the balance down or ask the lender about it.

Does a debit card count? No. Debit cards spend your own money and have no credit limit, so they do not have utilisation.

In short

  • Utilisation is balance divided by limit.
  • The reported balance is often the statement balance.
  • Pay more than the minimum and avoid closing old cards casually.
  • Interest costs matter more than any score.

General information only. This article is general education built on simple arithmetic and example numbers. It is not financial, tax or legal advice. Your situation, local rules and tax treatment will differ, so check anything important with a qualified professional. Rules, rates and schemes differ by country and change over time, so confirm details with an official source.

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