How your credit score affects your home loan approval and interest rate. Tips to check, fix, and improve your score. Expert guide from Brokio, Williams Landing.
Your credit score is a numerical summary of your credit history — essentially a report card for how responsibly you've managed debt and financial commitments. In Australia, three main credit bureaus track and calculate your score.
Your credit score is calculated using information from your credit report, which includes:
Because each bureau uses slightly different data and scoring models, your Equifax score might differ from your Illion score. This is normal. Lenders typically check one primary bureau — most major Australian banks use Equifax, but some use Illion or Experian. At Brokio, we know which bureaus our lender partners check, which helps us match you with the right lender.
Your credit score is one of several factors lenders assess when you apply for a home loan. Here's how it actually influences your application.
Most mainstream lenders have a minimum credit score requirement for home loan applications. While they rarely publish these numbers, typical thresholds are:
Increasingly, Australian lenders use risk-based pricing — meaning your credit score directly affects the interest rate you're offered. A borrower with an excellent score might receive a rate 0.3-0.5% lower than someone with an average score, even for the same loan product. On a $600,000 loan, that's $1,800-$3,000 per year in extra interest.
Your credit score opens the door, but lenders look at the full picture:
At Brokio, we take what we call the "score plus story" approach. Your number matters, but the context behind it matters too. A score of 550 due to a one-off medical emergency is very different from a 550 caused by chronic overspending. We present your full financial picture to lenders, not just a number.
If your credit score is a concern, talk to us before applying anywhere. Every application creates an enquiry that can lower your score further — applying strategically through a broker who knows lender thresholds can save your score from unnecessary damage.
Building a strong credit score isn't complicated — it just requires consistency and patience. Here are the factors that positively impact your score.
Paying every bill on time is the single most important thing you can do for your credit score. Under Comprehensive Credit Reporting (CCR), your payment history for credit accounts is now reported monthly — including positive behaviour. Every on-time payment builds your score; every late payment damages it.
Tip: Set up direct debits for all credit accounts (credit cards, phone bills, utilities, loan repayments). Even minimum payments count as on-time — though paying more is obviously better for your finances.
A longer credit history gives bureaus more data to assess your reliability. An account you've held for 5+ years with a perfect payment record is a strong positive signal. This is why financial advisers often recommend keeping your oldest credit card open (even if you rarely use it) — the history adds value.
Credit utilisation measures how much of your available credit you're using. A credit card with a $10,000 limit and a $2,000 balance has 20% utilisation — which is healthy. Using more than 30% of your available credit can negatively impact your score.
Tip: Keep credit card balances well below 30% of the limit. If your limit is $10,000, try to keep your balance under $3,000. Better yet, pay it off in full every month.
Having a variety of credit accounts (credit card, personal loan, phone plan, utility accounts) shows you can manage different types of financial commitments. This isn't a reason to take out unnecessary debt — but if you already have diverse accounts and manage them well, it helps.
Each time you apply for credit, an "enquiry" is recorded on your credit file. Fewer enquiries signal that you're not desperately seeking credit. Space out applications and only apply when you've done your research.
Consistent address history and employer details contribute to a positive credit profile. Frequent moves and job changes can be seen as instability factors. While this doesn't directly affect your numerical score, it influences lender assessments.
If you're starting from a low score due to past issues, meaningful improvement typically takes 6-12 months of consistent positive behaviour. If you have defaults, they remain on your credit file for 5 years — but their impact diminishes over time, especially if your recent history is clean.
Just as important as knowing what helps is understanding what damages your credit score. Some of these might surprise you.
This is the biggest score killer. A payment that's more than 14 days late can be reported under CCR. A payment more than 60 days overdue and over $150 becomes a default — which stays on your credit file for 5 years and can drop your score by 100-200+ points.
Common culprits: Forgotten phone bills, gym memberships you thought you cancelled, medical bills sent to the wrong address. These seemingly small amounts can cause defaults that haunt you for years.
Every credit application creates an enquiry on your credit file. Multiple applications in a short period suggest financial stress and can lower your score by 5-15 points per enquiry. This is why it's critical to apply through a mortgage broker rather than approaching multiple banks directly — we research which lender is most likely to approve you before making a single application.
Services like Afterpay, Zip, and Humm are now reported to credit bureaus. While using them responsibly can build positive history, missed payments are also reported. Many home loan applicants are surprised to learn that their BNPL activity is visible to lenders — and some lenders view active BNPL accounts as a negative signal, regardless of payment history.
Our recommendation: Close all BNPL accounts at least 3 months before applying for a home loan.
Even if you don't use them, high credit card limits reduce your borrowing power. But excessive utilisation of those limits damages your score. It's a double whammy. Reduce credit limits to what you actually need, and keep balances low.
These are the most severe credit events:
If you've guaranteed someone else's loan and they default, it can affect your credit score. This is why independent legal advice is so important before becoming a guarantor.
If creditors can't reach you and bills go to old addresses, unpaid amounts can become defaults — even if you didn't know about them. Always update your address with every financial institution, utility provider, and service when you move.
You have the right to check your credit report for free, and you should do so at least once a year — especially before applying for a home loan.
Each Australian credit bureau must provide you with a free copy of your credit report once every 12 months. Here's how:
We recommend checking all three bureaus because they don't always have the same information. A default might appear on your Equifax report but not on Illion, for example.
When reviewing your credit report, check for:
If you find errors on your credit report, you can dispute them:
If your credit report has legitimate negative marks, here's the recovery playbook:
Credit repair takes time, but it's absolutely possible. At Brokio, we've helped clients go from "declined everywhere" to "approved at a competitive rate" within 12-18 months of strategic credit rebuilding.
Not everyone has a perfect credit score — and at Brokio, we don't expect you to. Life happens. Medical emergencies, job losses, relationship breakdowns — these things can damage your credit without reflecting your current financial responsibility.
When you come to us with credit concerns, here's what we do:
The lending landscape for imperfect credit is broader than most people realise:
If you have credit concerns, we strongly recommend coming to see us 6-12 months before you plan to buy. This gives us time to:
We've seen it all — and we don't judge. Our job is to find you the best loan for your current situation, not to lecture you about the past. Whether your score is 850 or 450, we'll give you an honest assessment of your options and a clear path forward.
Worried about your credit score? Book a free, confidential consultation with Brokio. We'll review your credit report, explain your options, and create a plan to get you into your own home. Visit us at 601/87 Overton Road, Williams Landing VIC 3027 or call for a private phone consultation. We help buyers across Williams Landing, Point Cook, Tarneit, Truganina, Werribee, and all of Melbourne's west.
Ready to explore tailored loan options? Contact Brokio today and let us guide you through your mortgage, car loan, personal loan, or investment property loan journey with confidence.
