Why Lenders Give Different Borrowing Limits in North Brisbane, QLD, What Actually Changes
You and a colleague earn the same salary, work for the same employer, and both want to buy in North Brisbane. One of you gets a borrowing limit of $850,000. The other gets $1,050,000. Same income, same suburb, two very different answers.
This happens every week, and it's not a mistake. Lenders use their own credit policies, their own living-expense benchmarks and their own views on income types, credit card limits and existing debt. The gap between them can run to hundreds of thousands of dollars on an identical application.
Our team works through exactly this kind of situation for buyers across North Brisbane, QLD, comparing across 60+ lenders. The home loan structure and the lender behind it move the number as much as the rate does.
Key takeaways
- Lenders assess the same income differently, moving your limit by thousands.
- APRA caps high debt-to-income lending at six times gross income.
- The right lender for your income type can be worth more than a lower rate.
Why do borrowing limits vary so much between lenders?
Lenders don't share a single rulebook. Every bank and non-bank lender builds its own serviceability model, applies its own living-expense floor, and decides for itself how much weight to give each income type. APRA sets some guardrails, but within those guardrails lenders have significant latitude, and they use it.
The result is that a borrower who looks perfectly standard on paper can get four materially different numbers from four different lenders, all calculated honestly and all technically correct. The lender that assesses your overtime most generously, uses the lowest living-expense benchmark for your household size, or is farthest from its quarterly DTI quota on the day you apply can lend you materially more.
How does APRA's debt-to-income cap actually work in North Brisbane, QLD?
Since 1 February 2026, APRA has required that no more than 20% of an authorised deposit-taking institution's new lending sits at a debt-to-income ratio of six times gross income or higher. Non-bank lenders are not subject to it. The cap tracks owner-occupier and investor lending in separate pools, so a lender can exhaust its investor quota while still writing owner-occupier loans freely.
What this means in practice is that timing within a quarter can matter. A lender writing its last 5% of permitted high-DTI loans may decline a file it would have approved six weeks earlier. Applying through a broker who tracks lender appetite in real time is the cleanest way around this.
Source: APRA.
We see this repeatedly: a buyer comes in after one lender has knocked them back, and the number they were given turns out to be the first lender's quota problem, not a reflection of what they can actually borrow. Applying to the right lender first avoids that declined-application mark on the credit file.
Tom Kelly · Director - Home & Car Loans, Kelly Brothers Finance · Chat to Tom →
How do lenders assess income differently, and why does it change your limit?
Base salary from a permanent role is the easy part - most lenders count it in full once you're past probation. The gap opens on everything around it.
Where lender policy diverges most:
- › Overtime and shift penalties: some lenders take the full average, others shade it to 80%, others require two years of payslips before they'll count any of it. That single policy difference can shift a borrowing limit by $60,000 or more on a typical North Brisbane income.
- › Bonuses and commissions: most lenders average these over one to two years. Some require two full years before they'll include any part of a bonus in the assessment; others accept one year with a letter from the employer.
- › Rental income: typically shaded to 80% of the gross rental figure, then holding costs are added on top. The net effect means a $700 weekly rent on a Stafford investment property might contribute roughly $500 to the serviceable income figure, not the full amount.
- › Casual and contract income: lenders usually want around twelve months of consistent history in the same field before they'll assess casual income at full value. Some are willing to go earlier if the field is consistent.
- › HECS/HELP debt: lenders assess the compulsory repayment - calculated on your income level - as an ongoing monthly commitment. It's the repayment, not the balance, that reduces your limit. Paying down a small balance before applying can recover meaningful capacity if the cash isn't needed elsewhere for the deposit.
What else reduces your borrowing limit without you realising it?
Living expenses are assessed at the higher of what you declare or the lender's benchmark floor. The Melbourne Institute's Household Expenditure Measure is the floor most lenders use, and it's updated quarterly. Declaring expenses below that benchmark doesn't help - the lender substitutes the benchmark figure regardless.
The commitments lenders count that borrowers often miss:
- › Credit card limits: assessed at roughly 3% to 3.8% of the limit per month, regardless of whether you carry a balance. A $20,000 limit on a card you pay off in full each month still appears as a commitment in the lender's model.
- › Buy now pay later: appears on bank statements and is treated as a recurring commitment by most lenders. There's no single published policy, but its presence reliably attracts questions.
- › ATO payment plans: also visible on statements and typically treated as a commitment. Clearing these before applying removes a line from the assessment.
- › Personal loans and car finance: the repayment on any existing loan counts in full as a monthly commitment, reducing what the model allows for a mortgage repayment.
| Get in touch Need help with understanding your borrowing limit? We're a local team who understand how lenders actually assess your situation, not just your rate. We'll compare your options across 60+ lenders to find the right fit.
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How does the serviceability buffer affect what you can borrow?
Every bank and credit union is required to add a 3.0% buffer on top of your actual loan rate when assessing whether you can afford the repayments. So if you're borrowing at a competitive variable rate, APRA requires the lender to test whether you could still service the loan at approximately 9%. That test is what sets the ceiling on your limit, not the rate you'd actually pay.
Non-bank lenders sit outside APRA's direct supervision and are not bound by the same buffer requirement, which is one reason they can sometimes lend more. The trade-off is that their rates and terms differ, and whether they're the right choice depends on your full situation. For most straightforward owner-occupier buyers in Kedron, Alderley or Mitchelton, an ADI lender at a competitive rate will usually be the better long-term call, even if a non-bank would show a higher limit on paper.
Source: APRA.
When does a higher borrowing limit not make sense to chase?
Lenders show you the maximum they'll approve, not the maximum you should borrow. Those are different numbers. A limit at the top of what a lender will write assumes your income stays steady, your expenses don't rise, and interest rates don't move further. None of those is guaranteed.
Borrowing at your absolute ceiling leaves no buffer for a rate increase, a period of reduced income, or an unexpected cost. For buyers in suburbs like Stafford where house medians sit around $1,350,000, the gap between what you can borrow and what the property costs is usually where the real planning work happens. The limit tells you the boundary; it shouldn't determine the target.
If your overtime has only just become consistent, you're often better off waiting one more reporting period and applying on a cleaner income picture than pushing through now on a shaded figure. The limit will be higher, the rate will likely be better, and the approval is more straightforward.
Where I see buyers get into difficulty is when they've stretched to the absolute limit on paper and then have a rate move or an unplanned expense six months in. We'd usually rather find you a lender that gives you a strong limit with breathing room than one that writes the highest possible number for your file.
Tom Kelly · Director - Home & Car Loans, Kelly Brothers Finance · Chat to Tom →
What approval challenges do buyers face when their limit seems lower than expected?
Common reasons a borrowing limit comes in below expectations:
- › Variable income not yet seasoned: overtime, bonuses and casual hours that haven't been consistent for twelve months may be excluded entirely, or shaded heavily, depending on the lender.
- › Unused credit cards: a $15,000 card limit you never touch still reduces your assessed capacity by several hundred dollars a month at most lenders. Cancelling high-limit cards you don't need before applying is a straightforward fix.
- › Multiple credit enquiries: each application for credit leaves a mark. Applying to five lenders separately leaves five enquiries, which can signal credit stress to the next lender in sequence. Applying through one broker who runs a single assessment avoids this.
- › Lender near its DTI quota: a lender approaching its 20% cap on high-DTI lending may decline an application it would have approved at the start of the quarter. The borrower's situation hasn't changed; the lender's available quota has.
- › Wrong lender for your income type: a lender that shades overtime heavily is the wrong lender for a shift worker. Matching the lender to how your income is structured matters as much as matching it to your deposit.
How to find a lender that suits your income in North Brisbane, QLD, step by step
Step 1: Talk to us
We work through your income structure, existing commitments and deposit position to establish where you actually stand before any lender sees your file.
Step 2: Map your income to lender policy
We match your specific income type - whether it's salary, overtime, rental income or a mix - to the lenders on our panel that assess it most generously, and identify any commitments worth clearing first.
Step 3: Submit to the right lender
One application goes to the lender we've identified as the strongest match, protecting your credit file from multiple enquiries and giving you a clean pre-approval to take to agents.
Step 4: Through to approval and settlement
We manage the lender's conditions, coordinate with your solicitor, and make sure nothing delays settlement once you've found the property.
Frequently Asked Questions
Why did one lender offer me $200,000 more than another?
Different lenders use different living-expense benchmarks and treat variable income differently, so the same application produces materially different numbers. The lender that counted more of your overtime or used a lower expense floor will show the higher limit.
Does the APRA serviceability buffer apply to every lender?
No - the 3.0% buffer applies to authorised deposit-taking institutions such as banks and credit unions. Non-bank lenders are not subject to it, which is one reason they can sometimes approve a higher amount on the same application.
How does a credit card limit reduce my borrowing capacity even if I pay it off?
Lenders assess roughly 3% to 3.8% of the credit limit as a monthly commitment regardless of your balance. A $10,000 card costs you around $300 to $380 per month in assessed commitments even if the balance is zero.
Can I borrow more by cancelling credit cards before I apply?
Yes, cancelling high-limit cards you don't use can increase your assessed capacity meaningfully. Do it before your application rather than during - lenders verify credit limits at the time of assessment.
What is the debt-to-income cap and does it affect me?
APRA limits banks to writing no more than 20% of new loans at a DTI of six times gross income or higher. If your total debt would exceed six times your income, fewer lenders can legally write the loan, and timing within a lender's quarter can affect your outcome.
Is a mortgage broker or going directly to a bank better for finding the highest borrowing limit?
A mortgage broker, every time. A single bank shows you one policy and one limit. A broker compares how your income type is assessed across the whole panel, which is the only way to find the lender that suits your specific situation.
Your Next Steps
Knowing your borrowing limit isn't just about the biggest number a lender will write. It's about finding the lender whose policy fits your income structure, your commitments and your timeline, and then making sure you're not leaving capacity on the table through a mismatch you didn't know existed.
Ready to find out which lenders will work best for your situation? Contact the Kelly Brothers Finance team or call 07 3847 9450. We'll canvas our 60+ lender panel and find the most suitable options for your circumstances.
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External Resources
Kelly Brothers Finance · North Brisbane, QLD · Kelly Brothers Brokerage Pty Ltd (ACN 662 331 320), authorised under Australian Credit Licence 517192 · General information only - this article does not constitute financial advice. Please consider your own circumstances and seek professional advice before making any financial decisions.
