In Australia, your credit score is a numerical summary of your creditworthiness, calculated from the information in your credit report. Lenders use it — alongside their own internal assessment — to decide whether to approve your home loan application and at what interest rate. A higher credit score opens access to more lenders, better rates, and higher borrowing capacity. A low score can result in declined applications or significantly higher rates through specialist lenders. This guide explains exactly how the system works and what you can do to improve your score before applying for a home loan.
How Does Credit Scoring Work in Australia?
Australia has three credit reporting bureaus: Equifax (formerly Veda), Illion (formerly Dun & Bradstreet), and Experian. Each bureau maintains a credit report on every Australian who has applied for credit, and calculates a credit score based on the information in that report.
Credit score ranges:
Equifax: 0–1,200. Scores above 622 are considered 'good'; above 726 is 'very good'; above 833 is 'excellent'.
Illon: 0–1,000. Scores above 500 are 'good'; above 700 is 'very good'; above 800 is 'excellent'.
Experian: 0–1,000. Scores above 625 are 'good'; above 700 is 'very good'; above 800 is 'excellent'.
Under Comprehensive Credit Reporting (CCR), introduced progressively since 2018, credit reports now include both negative and positive information. Previously, only negative events (defaults, inquiries) were reported. Now, your credit report includes: monthly repayment history (on-time payments improve your score), credit account opening and closing dates, credit limits, and the type of credit you hold.
This means a history of on-time repayments on credit cards, personal loans, and existing mortgages actively builds your credit score — whereas under the old system, it had no positive effect.
Different lenders use different bureaus — and your score may vary slightly between them. Most major banks check Equifax. Some also check Illion or Experian as a secondary source. Your broker will advise which bureau the target lender uses.
Check Your Credit Report for Free
You are entitled to a free credit report from each bureau once every 12 months (or within 90 days of a credit application being declined). Equifax: www.equifax.com.au. Illion: www.checkyourcredit.com.au. Experian: www.experian.com.au. Always check all three — errors on one report may not appear on another.
What Damages Your Credit Score? (And How Much)
Multiple credit applications in a short period: Each credit application generates a 'hard inquiry' on your credit report. Multiple inquiries in a short period (e.g., applying for credit cards, personal loans, and a home loan within a few months) signals financial stress to lenders. Each inquiry can reduce your score by 5–20 points. Hard inquiries remain on your report for 5 years.
Missed or late repayments: Under CCR, lenders report your repayment history monthly. A repayment that is 14+ days late is recorded as 'late'. Late payments remain on your report for 2 years. Multiple late payments have a cumulative negative effect.
Defaults: A default occurs when a payment is overdue by 60+ days and the amount is $150 or more. Defaults remain on your credit report for 5 years from the date of the default — even if you subsequently pay the debt in full. A paid default is better than an unpaid default — but both are significant negative marks.
Court judgments: If a creditor obtains a court judgment against you for an unpaid debt, this is recorded on your credit report for 5 years. Judgments are extremely damaging to your credit score.
Bankruptcy: A bankruptcy is recorded for 5 years from the date you are discharged (which is typically 3 years after filing — so potentially 7–8 years from the initial filing). Bankruptcy makes home loan approval extremely difficult.
Buy-now-pay-later (BNPL): As of 2025–2026, BNPL providers are increasingly reporting to credit bureaus. Missed BNPL payments can now appear on your credit report. Additionally, multiple BNPL accounts signal high spending to lenders even if all payments are current.
High credit card limits: Even with a zero balance, a high credit card limit (e.g., $20,000) reduces borrowing capacity because lenders assume you could draw the full limit at any time. This does not directly affect your credit score — but it does affect your home loan application.
| Event | Score Impact | Duration on Report |
|---|---|---|
| Credit application (hard inquiry) | -5 to -20 points | 5 years |
| Late payment (14+ days) | -15 to -50 points | 2 years |
| Default (60+ days, $150+) | -100 to -250 points | 5 years |
| Court judgment | -200 to -350 points | 5 years |
| Bankruptcy | -300+ points | 5–7 years |
| Multiple BNPL accounts | -5 to -15 points each | 2–5 years |
How to Improve Your Credit Score Before Applying for a Home Loan
Step 1 — Check your credit report for errors: Request free copies from all three bureaus. Look for: incorrect personal details (wrong address, employer), accounts you do not recognise (possible identity fraud), defaults or late payments you dispute, and hard inquiries from applications you did not make. If you find errors, lodge a dispute with the bureau — they must investigate within 30 days. Correcting errors can result in an immediate score improvement.
Step 2 — Pay all bills on time, every time: Under CCR, every on-time payment is reported and builds your score. Set up direct debits or auto-pay for all recurring bills — credit cards, personal loans, utilities, phone plans. Even one late payment can drop your score by 15–50 points.
Step 3 — Reduce credit card limits: Close any credit cards you do not use. For cards you keep, reduce the limit to the minimum you need (e.g., $5,000 instead of $20,000). Each reduction improves your debt-to-income ratio and borrowing capacity. Allow 30 days for the closure or reduction to be reflected on your credit report.
Step 4 — Pay off or close BNPL accounts: Close all buy-now-pay-later accounts (Afterpay, Zip, etc.) at least 3–6 months before applying for a home loan. BNPL activity is viewed negatively by many lenders — it signals potential spending issues and creates small recurring liabilities.
Step 5 — Avoid new credit applications: Do not apply for any new credit (cards, personal loans, car loans, BNPL, store finance) for at least 6–12 months before your home loan application. Each application creates a hard inquiry. Multiple inquiries in the lead-up to a mortgage application are a red flag.
Step 6 — Pay down existing debt: Reduce outstanding balances on credit cards and personal loans as much as possible. Lenders assess your existing debt commitments when calculating borrowing capacity — lower balances mean higher capacity.
Step 7 — Build a positive repayment history: If you have limited credit history (no credit cards, no loans), consider opening a small credit card (low limit, $1,000–$2,000), using it for small regular purchases, and paying the balance in full each month. This builds positive CCR data over 3–6 months.
Step 8 — Allow time: Credit score improvements are not instant. Most changes take 30–90 days to appear on your report. Plan your credit improvement strategy at least 6–12 months before your target home loan application date.
Start 12 Months Before You Plan to Apply
The ideal credit improvement timeline is 12 months. Month 1: check reports and dispute errors. Months 1–3: close unused credit cards and BNPL accounts. Months 1–12: pay all bills on time (building positive CCR data). Month 6: stop all new credit applications. Month 12: apply for your home loan with a clean, strong credit profile.
- ✓Check all three credit reports for errors and disputes
- ✓Set up auto-pay for all recurring bills and credit commitments
- ✓Close unused credit cards and reduce limits on active cards
- ✓Close all BNPL accounts at least 3–6 months before applying
- ✓Avoid any new credit applications for 6–12 months
- ✓Pay down existing debt balances (credit cards, personal loans)
- ✓Build positive CCR history with on-time payments
- ✓Allow 6–12 months for changes to be reflected in your score
Frequently Asked Questions
About the Author
Sakib Manzoor
Senior Finance Wellness Expert
Sakib Manzoor is the founder of Secure Finance and brings extensive experience in Australian mortgage broking and financial wellness. Specialising in helping clients achieve their property finance goals through personalised strategies and expert guidance, Sakib is FBAA accredited and committed to providing clear, actionable advice. All content is written to meet Australian regulatory standards and is regularly updated to reflect current market conditions.