When I first started looking into home loans, I assumed the bank would simply look at my salary and tell me how much I could borrow. Simple, right? I quickly learned that this couldn’t be further from the truth. Banks and lenders run a surprisingly complex set of calculations behind the scenes, and many of the factors they weigh up are ones most people never think about. That’s exactly why services like Borrowing capacity calculator from Stryve Finance, a trusted mortgage broker in Sydney, exist to help everyday Australians decode what lenders are actually looking for before they walk into a bank. In this article, I’ll walk you through the lesser-known factors that directly impact your borrowing power, so you can go into the process informed, confident, and ready to secure the best possible outcome.
1. Your Credit Score Is Just the Starting Point
Most people know that a credit score matters, but many don’t realise how much weight lenders place on the finer details within your credit file. It’s not just about whether you have a good score or a bad one. Lenders examine the full story: how many credit enquiries you’ve made in the past 12 months, whether you’ve had any late repayments (even minor ones), the length of your credit history, and what types of credit accounts you currently hold.
A single hard enquiry, like applying for a credit card or a personal loan, can signal financial stress to a lender even if you were just browsing your options. I’ve spoken with brokers at Stryve Finance who’ve seen clients knocked back or offered lower loan amounts simply because they had too many enquiries in a short period. The lesson? Be strategic about any credit applications before you approach a lender for a home loan.
Read also: 5 Mistakes That Lower Your Borrowing Capacity (and How to Fix Them)
2. Living Expenses: The Number Banks Watch Closely
Here’s a factor that catches a lot of borrowers off guard: your declared living expenses. Since the banking royal commission, lenders have significantly tightened how they assess household expenditure. They no longer simply accept what you say your living costs are. Many lenders now cross-reference your stated expenses against benchmarks like the Household Expenditure Measure (HEM), or they’ll scrutinise your bank statements in detail.
Think about what your bank statements reveal: regular subscriptions, dining out, gym memberships, online shopping habits, and entertainment spending. All of these contribute to what a lender considers your true cost of living. Stryve Finance works with clients across Sydney to help them understand what lenders are looking for and how to present their finances in the most accurate and favourable light. That’s not about hiding anything; it’s about knowing how the system works so you’re not penalised unfairly.
3. Existing Debts and Credit Limits (Even Ones You Don’t Use)
This one surprises almost everyone. Your borrowing power isn’t just reduced by the debts you’re actively repaying. It’s also reduced by credit limits you could potentially use. If you have a credit card with a $10,000 limit but only owe $500, most lenders will calculate your repayment obligations as if you owe the full $10,000. The same applies to unused overdrafts and buy-now-pay-later accounts.
I’ve seen clients who were carrying multiple store cards and personal loan facilities they barely touched, only to discover that those unused limits were quietly chipping away at their borrowing capacity. The team at Stryve Finance, Sydney’s mortgage broker specialists, often recommends consolidating or closing unnecessary credit accounts well before submitting a home loan application. It’s one of the simplest ways to boost your borrowing power without changing your income.
4. The Type and Stability of Your Income
Not all income is equal in a lender’s eyes. If you’re a salaried employee on a permanent contract, lenders generally treat your income as reliable and use 100% of it in their assessment. But if you’re self-employed, work casual hours, earn commissions, or receive bonuses, lenders may only factor in a portion of that income, often after averaging it over two years.
Rental income from investment properties, government benefits, and income from second jobs all fall into their own categories with varying levels of acceptance across different lenders. This is where working with a broker like Stryve Finance becomes genuinely valuable. Because they work with a wide panel of lenders in Sydney and across Australia, they can match your specific income situation with a lender whose policy is most aligned to your circumstances, giving you the best possible chance at approval and the highest borrowing amount.
5. The Serviceability Buffer: The Rate You’re Really Assessed Against
Even if interest rates are low at the time of your application, banks don’t assess your ability to repay at the current rate. The Australian Prudential Regulation Authority (APRA) requires lenders to add a serviceability buffer of at least 3% on top of the actual interest rate when calculating whether you can afford the loan. So if you’re being offered a rate of 6%, the bank will test your repayments at 9% to ensure you could still manage if rates were to rise.
This single factor can significantly reduce the maximum loan amount a bank is willing to offer. Understanding it is crucial before you fall in love with a property that’s just at the edge of your expected budget. Stryve Finance regularly helps clients in Sydney run through these numbers in advance so there are no surprises when the formal assessment comes back.
6. Dependants and Financial Commitments Beyond Debt
Having children or other dependants reduces your borrowing power in the eyes of most lenders. Each dependant is factored into the living expense calculation, meaning a family of four is assumed to have significantly higher monthly expenses than a couple with no children. The same applies to other ongoing financial obligations such as private school fees, child support payments, or regular financial support provided to family members overseas.
These aren’t judgements, they’re simply variables in the equation. But knowing how each variable is treated allows you to plan more effectively. Stryve Finance takes the time to understand each client’s full financial picture, including family circumstances, to identify which lenders are most likely to offer the most competitive outcome given their situation.
7. The Loan Structure You Choose
Finally, it’s worth noting that the structure of the loan itself can affect how much you’re able to borrow. Interest-only loans are assessed differently from principal-and-interest loans. Fixed rate products, split loans, and offset accounts all play a role in how lenders model your long-term repayment capacity. Even the term of the loan (say 25 years versus 30 years) affects your repayment amount, which in turn affects serviceability.
The right structure isn’t the same for everyone, and choosing the wrong one could mean qualifying for less than you actually deserve. This is one of the core conversations that Stryve Finance, as a leading Sydney mortgage broker, has with every client. Understanding what structure suits your goals and financial profile can make a meaningful difference in both your borrowing power and the overall cost of your loan over time.
Final Thoughts
Borrowing power is far more nuanced than most people expect. Your income is just one piece of a complex puzzle that includes your spending habits, existing credit, loan structure, family commitments, and the type of work you do. Understanding these hidden factors ahead of time doesn’t just improve your chances of approval; it gives you a genuine edge in knowing what you can realistically afford and how to position yourself as a strong borrower.
If you’re based in Sydney and you want personalised guidance before making any decisions, reaching out to Stryve Finance is a practical first step. As an experienced mortgage broker in Sydney, Stryve Finance can walk you through your specific situation, help you understand where your borrowing capacity sits today, and outline exactly what steps you can take to improve it. Going in informed makes all the difference.
