What is a Credit Score?
Quick answer
A credit score is a number, different at each credit bureau, that summarises how reliably you've managed debt. Lenders use it to decide whether to approve you, what rate to offer, and how much to lend, and the higher it is, the better.
How credit scores work in Australia
Two credit reporting bureaus dominate here, Equifax and Experian, with Illion also operating in the space. Each one pulls data from banks, lenders and utilities and runs its own scoring model, so you don't have a single credit score, you have a different number at each bureau, and they won't always agree. Most lenders only check one.
Since Comprehensive Credit Reporting (CCR) became mandatory for the big banks, your file shows more than just problems. It includes up to 24 months of rolling repayment history, so consistent on-time payments actively help your score, not just the absence of defaults.
What moves the number
Paying on time, every time, is the single biggest factor, since repayment history covers a rolling 24 months. Keeping your credit card balances well below their limits helps too, along with a longer, stable credit history.
On the downside, a default, a missed debt of $150 or more reported after 60-plus days overdue, sits on your file for 5 years. A serious credit infringement, like a lender losing contact with you entirely, stays for 7 years. Multiple credit applications in a short window each leave a hard inquiry on your file and can nudge your score down, and bankruptcy or court judgments stick around for 5 years too. Checking your own score is a soft inquiry and never affects it.
What counts as a good score
Because each bureau uses its own scale, "good" is a different number depending who you ask. On Equifax's 0 to 1,200 scale, 661 and up is generally considered good, 735 and up very good. On Experian's 0 to 1,000 scale, 625 and up is good, 700 and up very good. Illion also runs a 0 to 1,000 scale. Band boundaries move slightly over time and between sources, so treat these as a guide rather than gospel, and check the bureau's own site for the current cutoffs.
For a home loan, most major lenders want to see you sitting in the "very good" range or above, though every lender applies its own policy on top of the raw score.
A quick example
Two years of on-time repayments on a personal loan will show up as clean, positive data under CCR and can lift your score into the "very good" band. Miss a credit card payment and let it run past 60 days unpaid, though, and a default gets reported, a mark that sits on your file for five years regardless of whether you eventually pay it off. Paying a default doesn't remove it, it just changes its status to paid, which some lenders view more favourably than an unpaid one.
Frequently asked questions
How do I check my credit score for free in Australia?
Equifax and Experian both let you request a free copy of your report directly, and you're entitled to one every three months. Free apps like ClearScore (Equifax data) and Credit Savvy (Experian data) also give you ongoing access. Avoid anything asking for card details just to show you a score.
Does checking my own score hurt it?
No. Checking your own score is a soft inquiry and has no effect. Only a hard inquiry, which happens when a lender checks your file as part of an application, gets recorded and can affect your score.
What is a good credit score in Australia?
It depends which bureau you're looking at. On Equifax's 0 to 1,200 scale, 661 and up is generally good, 735 and up very good. On Experian's 0 to 1,000 scale, 625 and up is good, 700 and up very good. Illion also uses a 0 to 1,000 scale. Treat these bands as a guide, since the exact cutoffs can shift over time.
Does applying for a credit card affect my credit score?
Yes. Every formal credit application creates a hard inquiry, which is recorded on your file and can knock your score down slightly. A single application has a small effect; several applications in a short window looks worse and can have a more noticeable impact.
How long does it take to improve a credit score?
There's no fixed timeline. Consistent on-time repayments start showing up within a month or two of being reported. A default takes longer to stop dragging your score down, since it stays on your file for five years even once it's paid. Most people see a meaningful lift within 12 to 24 months of clean credit behaviour.
Disclaimer
This page is general information only, not financial advice. Credit scoring models, ranges and thresholds are set by each bureau and can change over time, so check Equifax, Experian or Illion directly for your current figures. If you're dealing with debt you're struggling to manage, a free financial counsellor (via the National Debt Helpline) can help beyond what this page covers.