Growing a property portfolio starts with how each loan is set up, not only which property you buy next. Whether you are picking up a second place near the Helensvale train station or thinking about your fourth, the structure behind your loans decides how far you can go and how comfortable the ride feels. Here is how we help local investors think it through.
How Do Lenders Assess Borrowing for a Growing Portfolio?
Banks must test whether you can afford repayments at a rate at least 3 percentage points above the loan's actual rate, with all your existing debts included. This applies to new borrowers, including those taking out an investment loan.
Rental income helps, but not at full value. APRA's guidance says prudent lenders count no more than 80 per cent of expected rent, to allow for gaps between tenants. Credit cards count too, usually based on the limit rather than the balance, so a card you never use can still trim your borrowing power.
Banks also face a portfolio-level limit on high debt-to-income lending. Each bank can write up to 20 per cent of its new lending at six times income or more, with separate limits for investors and owner-occupiers. It is not a cap on you personally, and lenders still judge each application on its own policy. Non-bank lenders are not covered by that limit, so it is worth comparing how different lenders view the same situation, along with their fees and features. Our borrowing capacity page is a good place to start.
Interest Only or Principal and Interest: Which Suits an Investment Loan?
Interest only keeps early repayments lower because you pay no principal, but your balance stays the same and repayments rise when the loan reverts to principal and interest. Principal and interest costs more each month from day one, yet the debt shrinks.
As an illustrative example at 6.75 per cent a year, consider a Helensvale couple with a $500,000 investment loan over 30 years. Interest only costs about $2,813 a month. Principal and interest over the full 30 years would be about $3,243 a month.
They choose a five-year interest-only period and park spare cash in an offset account, which reduces the interest charged. When the loan reverts, repayments are worked out over the remaining 25 years, so they climb to about $3,455 a month. That is roughly $642 more than they were paying. Because they planned for the jump, it did not catch them off guard. The trade-off is that after five years they still owe the full $500,000 unless they have made extra payments.
Interest only does not lift your borrowing power either. Lenders assess it on the shorter repayment period after the interest-only term, which usually gives a lower maximum loan. For tax, only the interest part of a repayment is deductible under either structure. Speak with your accountant about how that applies to you. You can test your own numbers with our loan repayments calculator.
Ready to get started?
Book a chat with a Finance & Mortgage Broker at Living Home Loans today.
Using Equity to Buy Your Next Investment Property
Equity release means borrowing against the value you have built in a property you own, often to fund the deposit on the next one. Lenders generally require lenders mortgage insurance once total borrowing goes above 80 per cent of the property's value, and each lender sets its own limits.
The cost is more debt and higher repayments. It also leaves less buffer if values soften or rents dip. There is a tax side too. Interest deductibility depends on what you use the borrowed money for, not what the property secures. Funds used for the investment purchase can be deductible, while money taken for a holiday or a car is not. Mixing purposes can make record keeping messy, so keep them separate and ask your accountant for advice.
If you already hold a loan with one lender, a refinance can sometimes open up different options. Our investment loans team can walk you through how it might look for your portfolio.
What the Negative Gearing Changes Mean for New Purchases
From the 2027-28 income year, net rental losses on established residential properties bought after 7:30pm AEST on 12 May 2026 can only be used against other residential property income. Properties held at that time, and eligible new builds, keep the current treatment.
In plain terms, if you buy an established home today, a rental loss may no longer reduce your salary income once the new rule starts. Any excess loss can be carried forward to offset future residential property income. A property bought between 12 May 2026 and 30 June 2027 can still be negatively geared under the current rules until 30 June 2027 only.
There is a capital gains change as well. From 1 July 2027, the 50 per cent discount is replaced by indexing the cost base to inflation, with a 30 per cent minimum tax rate on real gains from that date. Gains before that date are treated under the current rules. These rules are detailed and personal, so please check with your accountant before you commit. It also makes sense to make sure each purchase can stand on its own cash flow rather than relying on a tax deduction.
Helensvale has a lot going for it as a place to live, with the G:link light rail and train connection and Westfield Helensvale close by. Whether you invest here or elsewhere, the loan should fit your life as well as your portfolio. If you would like to talk it through with locals who care how it all turns out, see our Helensvale mortgage broker page.
Call one of our team or book an appointment at a time that works for you. If you would rather start with a relaxed conversation, let's chat about your goals.
Frequently Asked Questions
How do lenders assess an investment loan application?
Banks test your ability to repay at a rate at least 3 percentage points above the loan rate, including all existing debts. They also generally count no more than 80 per cent of expected rent as income.
Does an interest-only investment loan increase how much I can borrow?
No. Lenders assess interest-only loans on the shorter period after the interest-only term ends, which usually gives a lower maximum loan. The main benefit is lower repayments early on, with the trade-off that your balance does not fall.
Can I use equity in one property to buy another?
Often yes, depending on the lender and your circumstances. Lenders mortgage insurance is generally required once total borrowing exceeds 80 per cent of value, and the interest is only deductible based on how the funds are used.
How is negative gearing changing for investors?
From the 2027-28 income year, losses on established homes bought after 7:30pm AEST on 12 May 2026 can only offset other residential property income. Earlier holdings and eligible new builds keep the current treatment, so speak with your accountant.
