Everything You Need to Know About Borrowing Capacity

Your borrowing capacity determines which properties you can realistically pursue, and the calculation involves more than just your income.

Lenders assess your ability to service a loan by examining income, existing debts, living expenses, and dependants. They then apply a buffer to ensure you could still afford repayments if interest rates rose. The outcome is a figure that represents the maximum amount they're willing to lend, though what you choose to borrow may be considerably less.

How Lenders Calculate Your Serviceability

Serviceability calculations begin with your gross income and deduct tax, existing debt commitments, and an estimate of your living expenses. Lenders then apply an assessment rate, typically 2-3% above the current variable rate, to test whether you could still meet repayments if rates increased. This buffer protects both you and the lender from financial stress.

Consider a couple in Gregory Hills with a combined gross income of $160,000, a car loan with $450 monthly repayments, and two dependants. After tax and the Household Expenditure Measure that lenders use to estimate living costs, their surplus income might support a loan amount around $650,000 to $700,000, depending on the lender's assessment rate and policy. If they paid out the car loan before applying, that same couple might see their capacity increase by $80,000 to $100,000, demonstrating how clearing smaller debts can materially shift what's possible.

Why Different Lenders Give Different Answers

Each lender applies their own serviceability formula, living expense benchmarks, and assessment buffers. Some lenders recognise 80% of rental income from an investment property, while others accept 100%. Some discount childcare costs if you can demonstrate they'll cease once children start school. Others apply stricter expense assumptions for borrowers in certain postcodes or occupations.

We regularly see a variation of $100,000 or more in borrowing capacity between lenders for the same applicant. A couple applying through one major bank might be told they can borrow $580,000, while another lender offers $690,000 based on how they treat the same rental income or living expenses. This variation is one reason working with a broker who understands lender policies can open options that aren't visible when you apply directly.

Income Types That Strengthen Your Application

Lenders assess income differently depending on its source and stability. PAYG salary is the simplest to verify and usually accepted at 100% of your gross. Self-employed income typically requires two years of tax returns or financial statements, and some lenders average the figures while others take the most recent year if it shows growth. Bonus or commission income might be accepted at 50-80% unless you can demonstrate a consistent pattern over two or more years.

For Gregory Hills buyers working in industries with variable income structures, such as construction or sales, choosing a lender who recognises your full earning capacity makes a tangible difference. The same applies to those receiving rental income from an existing investment property, where lender treatment of that income stream directly affects how much you can borrow for your next purchase.

The Role of Expenses in Your Capacity

Lenders don't just accept your declared living expenses. Most apply a Household Expenditure Measure based on your income, dependants, and household size. If your actual expenses are lower, the lender will still use their benchmark. If your declared expenses exceed the benchmark, they'll use the higher figure.

Credit card limits also reduce capacity even if you pay the balance in full each month. A card with a $15,000 limit might reduce your borrowing capacity by $60,000 to $75,000 because lenders assume you could draw the full limit at any time. Closing unused cards or reducing limits before you apply for a home loan can recover that capacity without changing your actual financial position.

How Loan Structure Affects What You Can Borrow

The loan structure you choose influences both your borrowing capacity and your repayment flexibility. Principal and interest loans are assessed on the actual repayment amount, while interest-only loans are tested on a principal and interest basis even if you're only paying interest for the first few years. This means an interest-only structure doesn't increase what you can borrow, though it can reduce your repayments during the interest-only period.

Some buyers in Gregory Hills use a split loan structure to manage repayment certainty and flexibility. Part of the loan sits on a fixed rate for stability, while the remainder stays variable with an offset account attached. Lenders assess the split based on the combined repayment obligation, so the structure itself doesn't change capacity, but the offset can reduce interest costs over time and improve your equity position for future purchases.

Using Pre-Approval to Confirm Your Position

A home loan pre-approval provides conditional confirmation of what you can borrow, based on a full assessment of your financial position. It's not a guarantee, because final approval depends on the property you choose and any changes to your circumstances, but it gives you a reliable figure to work with when searching.

Pre-approval also reveals whether there are issues to address before you make an offer. If your capacity falls short of what you need, you can take steps such as paying down debt, increasing your deposit, or exploring lenders with more favourable policies. In our experience, buyers who secure pre-approval before attending auctions or making offers have a clearer sense of their limits and avoid the disappointment of finding a property they can't finance.

When to Reassess Your Borrowing Capacity

Your borrowing capacity isn't static. Changes to your income, debts, dependants, or the broader interest rate environment all affect what lenders will offer. If you received a pay rise, cleared a personal loan, or your partner returned to work, your capacity may have increased since you last checked. Equally, if rates have risen or your living expenses have grown, your capacity may have reduced.

For clients considering a move within Gregory Hills or looking to upsize from a townhouse to a detached home near Village Square, revisiting your capacity with current lender policies ensures you're working with accurate numbers. Lender appetite also shifts over time, so a lender who was conservative two years ago may now have more flexible serviceability criteria.

Call one of our team or book an appointment at a time that works for you. We'll walk through your full financial position, compare lender policies, and give you a clear picture of your borrowing capacity and the loan structures that suit your circumstances.

Frequently Asked Questions