Glossary
Credit Score
A credit score is a number Australian credit bureaus assign you based on your borrowing history. Lenders use it to decide whether to approve you and what interest rate to offer, so it directly shapes the cost of every loan you take.
What it is
A credit score is a number between 0 and 1,000 or 0 and 1,200, depending on the bureau, that summarises your track record with credit. Australia has three bureaus: Equifax, Experian, and illion, and each holds its own file on you. The score is built from comprehensive credit reporting, which tracks both the good and the bad. Positive repayment history over the past two years counts, along with defaults, hard enquiries, and the types of credit you hold.
A default stays on your file for five years, and serious delinquency can linger longer, as moneysmart.gov.au explains. Checking your own file is a soft enquiry, costs nothing, and you are entitled to a free copy once a year or after a credit refusal. Since June 2025, buy now pay later products sit under credit law, so those limits and your conduct with them increasingly shape how lenders see you. Paying on time and keeping old accounts open both help your score over time.
Key takeaways
- Three Australian bureaus (Equifax, Experian, illion) each hold a file and score on 0-1000 or 0-1200 scales.
- Comprehensive credit reporting includes two years of positive repayment history, not just black marks.
- Defaults stay on your file for five years; serious delinquency can stay longer.
- Checking your own score is a free soft enquiry once a year or after a refusal.
- Paying on time and keeping old accounts open helps; obsessing over the number daily does not.
How it works
Every time you apply for credit, the lender makes a hard enquiry that appears on your file. The bureaus then combine those enquiries with your repayment history from the past two years, any defaults, and the age of your accounts. Older accounts in good standing work in your favour because they show a long pattern of behaviour. Each bureau weighs the ingredients slightly differently, so your score can differ between Equifax, Experian, and illion. Hard enquiries fade in influence within months, while missed payments stain for years.
Lenders feed your score and file into their own serviceability models when you apply for credit. A higher score can mean approval at a sharper rate, while a thin or marked file can mean rejection or a premium. From June 2025, buy now pay later moved under credit law, so those accounts now feed into the same picture as rba.gov.au payment statistics show usage surging. The system rewards boring consistency: pay everything on time, every time, for years. You can request a free report from each bureau once a year or after any credit refusal.
Why it matters
Your credit score translates your past behaviour into the price of your future borrowing. A strong score on a $600,000 mortgage can be worth tens of thousands of dollars over the loan term compared to a borderline score. It also affects car loans, personal loans, credit card limits, and increasingly utilities and phone plans. Ignoring it until you need a loan is like ignoring your fitness until the fun run starts.
A colleague named Brent (yes, that Brent) applied for five credit cards in one month chasing sign-up bonuses he never used. Each application landed a hard enquiry on his file, and his score dropped enough that his mortgage broker raised an eyebrow at refinancing time. The fix took nearly a year of quiet, on-time behaviour. Brent now treats credit applications like weddings: rare, deliberate, and well planned.
Before you apply for anything serious, know where you stand. Run your obligations through the debt-to-income calculator to see your position the way a lender does, and test repayments against your pay with the loan repayments vs salary calculator. A clean file plus sensible numbers beats a mysterious score ritual every time.
Real-world examples
The rate difference
Amy and Josh both borrow $500,000 over 30 years. Amy's strong score gets her 6.1%, costing about $3,032 a month and roughly $591,000 in total interest. Josh's patchy file, with an old default and several recent enquiries, gets 6.6%, or about $3,197 a month. The 0.5% gap costs Josh around $59,000 in extra interest over the life of the loan. Same house, same income, very different price tag for borrowing identical money over the term.
The free check-up
Melissa is refused a credit card and uses her entitlement to a free copy of her credit file after the refusal. She finds a $220 default from a phone bill sent to an old address three years ago. She pays it, asks the provider to update the listing as paid, and sets up direct debits on everything. Six months later her score has recovered enough that her car loan is approved at 7.9% instead of the 11.5% she was first quoted, saving about $2,400 in interest.
The BNPL pile-up
Tom holds four buy now pay later accounts with combined limits of $8,000. When he applies for a personal loan, the lender treats those limits as potential debt in its serviceability calculation, reducing what he can borrow by roughly $15,000. He closes two accounts, drops his limits, and reapplies three months later. The second application, with fewer hard enquiries and lower declared limits, is approved for the full $20,000 he actually needed.
Common mistakes
Mistake: Applying for several credit products in a short window.
Why it bites you: Each application adds a hard enquiry, and a cluster signals desperation to lenders. Five enquiries in a month can knock meaningful points off your score and push you into a rate tier costing $50 or more extra a month on a loan.
Mistake: Ignoring small bills until they become defaults.
Why it bites you: A default over $150 can be listed and stays five years. A forgotten $180 phone bill can cost you thousands when it pushes your $400,000 mortgage rate up by even 0.3%, roughly $23,000 over 30 years.
Mistake: Closing your oldest credit account after paying it off.
Why it bites you: Old accounts lengthen your credit history, which helps your score. Closing a ten-year-old card can trim your file depth and nudge you into a worse rate band on your next application.
Mistake: Paying for score-repair services promising quick fixes.
Why it bites you: Accurate listings cannot be removed early, only disputed if wrong, which you can do free. Handing a fixer $1,000 or more buys nothing you cannot do yourself through the bureau or the ombudsman, and moneysmart.gov.au warns about exactly these outfits.
Ivy's take
I spent a weekend reading bureau methodologies and lender policy documents so you do not have to, and the secret is that there is no secret. Pay everything on time for two years and your score takes care of itself. Panic-checking the number weekly changes nothing. Behaviour, not monitoring, moves the dial.
My advice is dull and effective. Pull your free file once a year and after any refusal. Dispute genuine errors, keep old accounts open, and apply for credit rarely. Save your score anxiety for the six months before a mortgage application. Outside that window, it is wasted motion.
Related jargon, defined
- Hard enquiry
- A record added to your credit file when you apply for credit, visible to other lenders for years.
- Soft enquiry
- A check that does not affect your score, including requesting your own free file from a bureau.
- Comprehensive credit reporting
- The system where lenders share positive repayment history from the past two years, not just defaults.
- Default
- A listing for an overdue debt, typically over $150 and 60 days late, that stays on your file for five years.
- Credit bureau
- An agency that collects your credit data and produces your file and score; Australia has Equifax, Experian, and illion.
- Serviceability
- A lender's assessment of whether your income and existing debts can support new repayments.
Frequently asked questions
How do I check my credit score for free?+
Request a copy from Equifax, Experian, or illion, which is free once a year. You are also entitled to a free copy within 90 days of being refused credit.
Do buy now pay later accounts affect my credit score?+
From June 2025, BNPL products came under credit law, so they now appear in credit reporting. Their limits and your repayment conduct can influence how lenders assess you.
How long does a default stay on my file?+
A default stays for five years from the listing date. Paying it updates the listing to paid but does not remove it early.
Will checking my own score hurt it?+
No, checking your own file is a soft enquiry with no impact. Only lender applications create hard enquiries that affect your score.
What is a good credit score in Australia?+
On a 0-1000 scale, roughly 625 or above is good and 800-plus is excellent. On a 0-1200 scale, around 750 or above is considered good, though each lender sets its own cut-offs.
Disclaimer: This information is general in nature and does not constitute financial or legal advice. Always consult a qualified professional for your specific situation.
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Ivy Sinclair-Wren
Financial Chaos Analyst
Ivy Sinclair-Wren is a Financial Chaos Analyst covering investing, AI, wealth psychology, and the emotional consequences of opening finance apps during market crashes. Based in Melbourne, she specializes in demystifying the Australian tax code and helping users navigate the intersection of spreadsheet logic and human irrationality.