What are Property Investment Loan Fundamentals?

What Makes an Investment Loan Different from a Home Loan?

An investment loan is secured against a property you rent out rather than live in. Lenders apply different rates, serviceability checks, and deposit rules because the risk profile is different. You're servicing the loan from rental income and other earnings, not just a salary, and lenders know vacancy periods happen.

Consider someone in Lakelands looking at a unit to rent out while keeping their current home. They'll need a 10 per cent deposit minimum plus stamp duty and settlement costs. The rate will sit above what they'd pay for an owner-occupier home loan, typically 0.3 to 0.6 percentage points higher at current pricing. Lenders also assess serviceability at a buffer of 3.0 percentage points above the loan rate, which means your income needs to cover repayments at a rate much higher than what you'll actually pay in the first year.

The interest on that loan is claimable against the rental income and your other taxable income, provided the property was held or under contract by 12 May 2026. That tax treatment is what people mean when they talk about negative gearing, and it's been a core part of property investment strategy for decades. Rules around this changed in mid-2026, and those changes affect how you structure your next purchase if you're buying an established property after that date.

How the Negative Gearing Rules Changed in 2026

From the 2027-28 financial year, losses on established investment properties purchased after 7:30pm on 12 May 2026 can only be offset against income from other residential properties, not against your wage or salary. Losses can still be carried forward and used in future years, but the immediate tax benefit that made negatively geared property attractive to PAYG investors has been quarantined for new purchases of established stock.

Properties held or under contract before that date are grandfathered. Losses remain fully deductible against all income until you sell. New builds are also exempt. If you buy a newly constructed dwelling on vacant land or a property where the number of dwellings has increased, you retain full negative gearing and can choose between the old 50 per cent capital gains discount or the new indexed cost base model when you eventually sell.

In our experience, this distinction between established and new has redirected a portion of Lakelands investor enquiries toward house-and-land packages and townhouse developments in the southern corridor rather than existing units closer to the coast. The appetite for established stock hasn't disappeared, but buyers are now weighing the upfront price difference against the long-term tax position more carefully than they did twelve months ago.

What Deposit and Borrowing Capacity Do You Need?

Most lenders require a 10 per cent deposit for investment property, though some will lend at 5 per cent if you're prepared to pay Lenders Mortgage Insurance. LMI premiums rise steeply once you cross 80 per cent loan to value ratio, and they're calculated on the full loan amount. For investment lending above 80 per cent LVR, you're often looking at premiums in the range of several thousand dollars, which either get added to the loan or paid upfront.

Borrowing capacity depends on your income, existing debts, living expenses, and the rental income the property is expected to generate. Lenders apply a shading factor to rental income, typically 80 per cent, to account for vacancy and maintenance periods. They'll also assess you at a rate 3.0 percentage points above the actual loan rate. That serviceability buffer has been in place since late 2021 and hasn't moved since.

From February 2026, lenders also face a limit on how much they can lend to borrowers with a debt-to-income ratio of six times or higher. That limit applies separately to investor and owner-occupier lending, and it's measured across the lender's whole book each quarter. For an individual borrower, it means if your total debt including the new investment loan sits at six times your gross income or more, the lender might decline even if you meet all other criteria. This affects Lakelands buyers who already carry a mortgage on their home and are adding a second property, particularly if one partner is out of the workforce or working part-time.

Should You Fix, Go Variable, or Split the Rate?

Variable rates let you make extra repayments without penalty and give you access to offset accounts, which can be useful if you're holding cash for future purchases or managing uneven rental income. Fixed rates lock in your repayment amount and protect you from rate rises, but you lose flexibility and you'll face break costs if you pay the loan down early or refinance before the fixed term ends.

Splitting the loan gives you some of each. You might fix half for three years and leave the other half variable. That way you've got certainty on part of the repayment, you can still make extra payments against the variable portion, and if rates fall you're only locked in on half the balance. In our experience, investors who plan to refinance within a few years or who expect their income to jump tend to favour variable or split structures. Those closer to retirement or holding multiple properties often fix a portion to smooth out cash flow.

Interest-only repayments are another option. You pay only the interest each month, not the principal, which keeps your repayment lower and maximises your claimable deduction in the early years. The loan balance doesn't reduce, but if your strategy is to hold long-term and rely on capital growth rather than paying down debt, interest-only can work. Lenders typically approve interest-only periods of up to five years on investment loans, after which the loan reverts to principal and interest unless you apply to extend.

What Costs Should You Budget Beyond the Deposit?

Stamp duty is the largest upfront cost after the deposit. In Western Australia, stamp duty on investment property is calculated on the same scale as owner-occupier property, and there's no first home buyer concession because you're not living in it. Settlement costs including legal fees, loan establishment fees, and title insurance typically add another few thousand dollars.

If you're borrowing above 80 per cent LVR, add the LMI premium. If the property is in a strata scheme, check the strata fees and whether there's a sinking fund levy due at settlement. Some body corporate budgets also include special levies for major works, and those won't always appear on the contract of sale.

Ongoing costs include council rates, water rates, insurance, property management fees if you're using an agent, and repairs. All of these are claimable, but you need cash flow to cover them between rent payments. We regularly see new investors underestimate how much they'll spend in the first six months, particularly if the property needs minor work before tenanting or if there's a gap between settlement and the first rent payment.

How Does Rental Income Affect Your Borrowing?

Lenders add 80 per cent of the expected rental income to your gross income when calculating serviceability. They'll ask for a rental appraisal from a licensed property manager, and they'll use the lower end of the range if a range is provided. That shading to 80 per cent accounts for vacancy, periods between tenants, and maintenance weeks when the property isn't generating income.

If you're buying in Lakelands, rental yields on houses sit lower than units due to the price difference, but vacancy rates across the Peel region have been tight over the past few years as population growth in the southern corridor has outpaced new rental stock. Lenders don't adjust their shading based on local vacancy rates, but a property manager's appraisal will reflect local demand, and that number feeds directly into how much the lender will let you borrow.

Rental income is treated as assessable income for tax purposes, and you offset it with your loan interest, depreciation, and all the holding costs mentioned earlier. If your expenses exceed your rental income, that loss can be used to reduce your overall taxable income, provided the property was held or under contract by 12 May 2026 or is a new build. For properties purchased after that date that aren't new builds, the loss can only offset other residential property income or be carried forward.

What Happens If You Want to Access Equity Later?

As your investment property increases in value or as you pay down the loan, you build equity. You can access that equity by refinancing and increasing the loan amount, and use the funds as a deposit for another property or for other investment purposes. Lenders will revalue the property and assess your income and debts again at the time you apply.

Equity release is a common strategy for building a portfolio, but it depends on continued serviceability. If your income hasn't kept pace with your debt, or if interest rates have risen since your original loan, you might not be able to borrow as much as the equity theoretically allows. The debt-to-income limit introduced in February 2026 also restricts how much lenders can advance to borrowers whose total debt is already high relative to income, even if the security is strong.

Before refinancing or topping up an investment loan, work through the numbers with someone who can model your serviceability under current policy settings. Equity is only useful if you can borrow against it without overstretching your cash flow or locking yourself out of future lending.

Call one of our team or book an appointment at a time that works for you. We'll go through your income, your current debts, and what you're holding or planning to buy, and we'll tell you what's possible under the current rules and what's not. No assumptions, no glossing over the detail.

Frequently Asked Questions