I can’t count how many times a client has told me their credit score is “fine” based on a number they saw on a banking app, only for their formal loan application to come back with a completely different figure from the lender. It’s not a mistake, and it’s not something to panic about either, it’s just how Australia’s credit reporting system actually works. So let’s properly unpack what a credit score is, why it can look different depending on where you check it, and what it genuinely means for your ability to get a home loan approved.
A credit score is a number that reflects your credit history, calculated by a credit reporting body from information collected from lenders, courts, and other organisations. According to ASIC’s Moneysmart, your credit report includes your personal details, the band your credit score sits in, and a record of the credit products you’ve held over the last two years, including credit limits and repayment history. Lenders use your score as a quick, standardized way to gauge how risky it is to lend you money, based on how you’ve managed credit in the past. The higher your score, the lower the perceived risk, which generally translates into a better chance of approval and, in some cases, more competitive rates and terms.
This is the part that trips up almost everyone I speak to. Unlike some countries with a single unified credit score, Australia has three separate credit reporting bodies, Equifax, Experian, and illion, and each one maintains its own file on you, uses its own scoring model, and can show a genuinely different number.
Equifax uses a scale of 0 to 1,200 and is the bureau most major banks rely on as their primary credit assessment input. Experian and illion both use a scale of 0 to 1,000. Because not every lender or credit provider reports to all three bureaus, the exact same person can have three different scores on the same day, and all three can be entirely correct. A default from a telecommunications provider might appear on your illion file but not on Equifax, while a missed payment with a bank might show up on Equifax but not Experian. This is completely normal, not a system error, and it’s exactly why checking just one score before applying for a loan doesn’t always tell you the full picture.
Because the scales differ, “good” means different things depending on which bureau you’re looking at. As a general guide, on the Equifax scale a score in the range of roughly 661 to 734 is typically considered good, climbing into very good and excellent bands above that. On Experian, a score of around 625 or higher is generally considered good, while illion’s good band typically starts from around 500 on its own 0 to 1,000 scale. The important thing to remember is that these bands are relative, not absolute measures of financial responsibility, and lenders generally have their own internal thresholds for what score they’re comfortable lending against, which can sit above or below the bureau’s own published bands.
Your credit score is built from several key factors, and understanding them properly is far more useful than fixating on the number itself.
Repayment history. This is generally the single biggest factor in your score, particularly since Comprehensive Credit Reporting was introduced, which means lenders now report both positive and negative repayment behaviour, not just missed payments. Consistently paying credit cards, loans, and other obligations on time is the strongest thing you can do for your score over time.
The amount you’ve borrowed and your credit utilisation. How much of your available credit you’re actually using matters, not just whether you make repayments. Carrying a large balance close to your credit limit, even if you pay it off eventually, can weigh on your score.
The types of credit applications you’ve made. Certain types of credit enquiries, such as payday lending, are viewed differently to a standard mortgage or car loan enquiry, and can affect your score differently.
How many credit enquiries you’ve made in a short period. Applying for several credit products in quick succession can suggest financial stress to a lender, even if each individual application was reasonable on its own, and it’s something worth being mindful of in the months leading up to a home loan application.
Defaults and court judgements. A default listed on your file, whether from a missed loan repayment, an unpaid utility bill, or another credit obligation, can have a significant and lasting impact on your score, and generally remains on your file for five years from the date it was listed, regardless of whether it’s since been paid off.
It’s worth being clear that your credit score is one input into a lender’s decision, not the entire decision on its own. Lenders also assess your income, expenses, employment stability, deposit size, and existing debts as part of a full application. That said, your credit score does play a meaningful role in a few specific ways.
Whether you’re approved at all. A very low score, particularly one affected by recent defaults or a pattern of missed repayments, can be a genuine barrier to approval with mainstream lenders, though it doesn’t necessarily rule out every lender.
Which lenders will consider you. Different lenders have different risk appetites and internal score thresholds. A score that one lender considers perfectly acceptable might sit below another lender’s comfort level, which is exactly the kind of policy variation worth comparing properly rather than assuming a single knockback reflects how every lender will view your file.
The interest rate and terms you’re offered. Some lenders do factor credit score into pricing, meaning a stronger score can occasionally translate into a sharper rate, though this varies significantly between lenders and isn’t universal practice across the market.
You’re entitled to request a free copy of your credit report from each of the three bureaus once every three months, and you can also request a free copy if you’ve been refused credit within the past 90 days or had information on your file corrected. Checking your own score is classified as what’s called a soft enquiry, and it has no impact on your score at all, so there’s no reason to avoid checking regularly, particularly before applying for a significant loan like a mortgage.
Because the three bureaus can hold different information, it’s genuinely worth checking all three rather than assuming one score represents your full credit position. If you spot something on your file that looks incorrect, you have the right to dispute it directly with the relevant credit reporting body.
Check your credit report well before you apply, not the week before. This gives you time to address anything unexpected, such as an error, an old default you weren’t aware of, or an account you’d forgotten about, rather than discovering it mid-application.
Pay down existing balances where you can, particularly on credit cards. Reducing how much of your available credit you’re using can have a meaningfully positive effect, sometimes within just a month or two.
Avoid applying for new credit in the months leading up to your home loan application. Every application can register as a fresh enquiry, and a cluster of them close together can work against you, even if each one was reasonable in isolation.
Stay on top of repayments across everything, not just your largest debts. A missed payment on a smaller account, like a phone plan or a buy now pay later service, can still show up and affect your file.
Consider closing unused credit accounts, particularly credit cards you no longer use. An unused credit card still counts as available credit; a lender may factor into your overall borrowing capacity, separate from its effect on your score.
FAQs
No. Checking your own score is a soft enquiry and has no impact whatsoever on your credit score, regardless of how often you check it.
Banking apps and free score checking services often pull from just one of the three bureaus, and sometimes use a slightly different model or update cycle than what your lender ultimately queries during a full application. Different reported data across bureaus is the most common reason for this discrepancy.
Generally five years from the date it was listed, regardless of whether you've since paid it off. Paying an outstanding default doesn't remove it from your file, though it may still be viewed more favourably by some lenders than an unpaid one.
Often, yes, particularly if the rest of your application is strong, such as a stable income, a reasonable deposit, and manageable existing debts. Some lenders specialise in working with borrowers whose credit history isn't perfect, so it's worth exploring your options rather than assuming a single lender's decision reflects every lender's view.
Not inherently. What matters is how many separate credit enquiries end up on your file, so working with a broker who properly assesses your situation before submitting an application to a suitable lender can actually help you avoid multiple unnecessary enquiries from applying to several banks yourself.
It depends on what's affecting it. Reducing credit card balances can show improvement within a month or two, while recovering from a default or a history of missed payments generally takes longer, often twelve months or more of consistent, on time repayments.
If you’re not sure where your credit position actually stands, or how it might affect your options, that’s exactly the kind of thing worth checking properly before you apply anywhere. Take a look at our Home Loans page for more detail on how we work, and if a smaller deposit or self employed income is also part of your situation, our Low Deposit Home Loans and Self Employed Home Loans pages cover those specifically.
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