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Credit Utilisation: What It Means for Your Credit Score
How much of your available credit you are using, why your total credit limits matter in Australia even when unused, and how to bring the ratio down.
Updated 25 August 2026 · 3 min read
What is measured, what moves a score, and what nothing can move quickly.
Everything here is written for the Australia. Terminology, protection limits and regulators differ between markets, so a guide from another country will not transfer cleanly.
How much of your available credit you are using, why your total credit limits matter in Australia even when unused, and how to bring the ratio down.
What genuinely moves an Australian credit file under comprehensive credit reporting, in the order worth doing it.
Australia has three credit bureaus using different scales, and comprehensive credit reporting means your monthly repayment history is on file.
Calculators
Run the numbers on your own situation.
What is my credit utilization?