Unlock the Secrets to Property Investment Success

Property investment is no longer a matter of finding a lender and signing the paperwork. The regulatory landscape has shifted, and the tax treatment of rental properties is changing in ways that will affect how you structure your finance and choose which properties to buy.

What Makes an Investment Loan Different from a Home Loan

Investment loans are assessed and priced differently because the property secures income-producing debt rather than owner-occupied housing. Lenders apply a different serviceability calculation, typically assessing rental income at 80 per cent of market rent to account for vacancy and maintenance periods. The interest rate on an investor product is usually higher than the equivalent owner-occupied rate, and the deposit requirement is often larger.

Consider a buyer looking at a two-bedroom apartment in South Perth. If purchased as a home, they might secure finance at 90 per cent loan to value ratio with an owner-occupied variable rate. The same property bought as an investment would typically require a 10 per cent deposit at minimum, attract a higher interest rate, and rental income would be shaded when the lender calculates serviceability. These differences compound when you apply for a second or third property.

How Serviceability Rules Affect What You Can Borrow

Lenders assess your ability to service an investment loan using a buffer of 3 percentage points above the product rate. From February this year, debt-to-income caps also apply. Lenders may approve up to 20 per cent of their new investor loans at a debt-to-income ratio of 6 times or higher, but most borrowers will need to keep total debt below that threshold to secure approval.

Rental income is included in your serviceability assessment, but it is discounted. If a property rents for $600 per week, the lender will typically assess it at $480 per week. The shortfall between the discounted income and the loan repayment affects your borrowing capacity for future purchases. This is one reason investment loan structures need to be planned with portfolio growth in mind, not just the first property.

Interest Only Repayments and Cash Flow Management

Interest only repayments allow you to reduce your monthly outgoings and preserve cash flow, which is useful when building a portfolio or managing multiple properties. The loan amount does not reduce during the interest only period, but you are not required to repay principal. Most lenders offer interest only terms of one to five years on investment loans, after which the loan reverts to principal and interest unless you negotiate an extension.

This structure works when you want to direct surplus income toward a deposit on another property rather than paying down existing debt. It also allows you to claim the maximum interest deduction each year, assuming the loan is held under current negative gearing rules. Once the interest only period ends, repayments increase as you begin repaying both interest and principal.

Negative Gearing Under the New Tax Rules

From 1 July 2027, net rental losses on residential properties acquired on or after 7:30pm AEST on 12 May 2026 cannot be offset against salary or wages. Losses are quarantined and can only be used against future rental income or capital gains on residential property. Properties acquired before that time, including those under contract at the announcement, retain access to negative gearing under the existing rules.

Eligible new builds are exempt from the quarantine. A property constructed on previously vacant land, or a development that increases the number of dwellings on a site, allows the investor to continue deducting losses against other income. A knock-down rebuild that does not increase dwelling numbers is not eligible, and a new build that has been occupied for more than 12 months before being sold to a subsequent investor loses the exemption for that buyer.

If you are purchasing an established property as an investment, the loss quarantine means you need positive cash flow or sufficient other rental income to absorb the loss. This changes the financial profile of properties that were previously attractive because of their tax deductions.

How Loan to Value Ratio and Lenders Mortgage Insurance Work for Investors

Lenders Mortgage Insurance applies when your loan to value ratio exceeds 80 per cent. For investment loans, LMI premiums are higher than for owner-occupied loans at the same loan to value ratio, reflecting the lender's increased risk. Some lenders cap investment loans at 90 per cent loan to value ratio, and others will only lend up to 80 per cent for certain property types such as apartments or regional properties.

A 20 per cent deposit avoids LMI and gives you access to a wider range of lenders and products. If you are using equity from an existing property to fund the deposit, the combined loan to value ratio across both properties is assessed. This can limit how much you can borrow unless you have sufficient equity or are willing to pay LMI on the new loan.

Using Equity to Fund Your Next Purchase

Equity in an existing property can be used as a deposit for an investment purchase without selling the property. The lender assesses the current value of your home, deducts the outstanding loan balance, and calculates how much you can access while keeping the combined loan to value ratio within their policy. Most lenders will allow you to access equity up to 80 per cent combined loan to value ratio without Lenders Mortgage Insurance.

In a scenario where your home is valued at $800,000 with a $400,000 loan balance, you have $400,000 in equity. The lender will typically allow you to borrow up to 80 per cent of the property value, or $640,000, leaving $240,000 available to use as a deposit and cover purchase costs on an investment property. Accessing equity this way allows you to retain your existing home loan and keep the investment loan separate, which simplifies tax deductions and record keeping.

Fixed Rate or Variable Rate for Investment Loans

Variable rate investment loans allow you to make extra repayments, redraw funds, and refinance without break costs. Fixed rate investment loans lock in your interest rate for a set period, usually one to five years, which provides certainty over your repayments and your interest deduction. The fixed rate is typically higher than the variable rate at the time of application, and you cannot access offset accounts or make unlimited extra repayments during the fixed period.

Some investors split their loan between fixed and variable to balance certainty with flexibility. This allows you to fix a portion of your debt while retaining access to redraw or offset on the variable portion. The structure you choose depends on your cash flow needs, your view on interest rate movements, and how actively you plan to manage the loan.

Tax Deductions and Claimable Expenses on Investment Property

Interest on borrowings used to acquire or hold an investment property is deductible to the extent the property is rented or genuinely available for rent. Other claimable expenses include body corporate fees, council rates, landlord insurance, property management fees, and depreciation on the building and fixtures. Stamp duty and other purchase costs are not immediately deductible but are added to the cost base of the property for capital gains tax purposes.

Loan establishment fees and ongoing loan account fees are deductible in the year they are incurred. If you pay a loan establishment fee upfront, you can claim the full amount in that financial year. If you capitalise the fee into the loan, you can still claim the deduction in the year the fee is charged, not over the life of the loan.

Capital Gains Tax Changes from July 2027

From 1 July 2027, the 50 per cent capital gains tax discount is replaced for affected assets with cost base indexation and a minimum 30 per cent tax rate on real gains. The change applies only to gains that accrue after 1 July 2027. Gains that accrued before that date continue under the current discount rules, even if the property is sold years later.

Eligible new build residential properties allow the investor to elect between the 50 per cent discount and indexation with the 30 per cent minimum tax rate. This election is made at the time of sale and allows you to choose the treatment that results in the lower tax liability based on the actual gain and the amount of inflation during the holding period.

The indexation approach may reduce taxable gains in high inflation periods but applies a minimum tax rate that could exceed your marginal rate if you are on a lower income in the year of sale. The election is one reason to model your expected holding period and exit strategy before purchasing a new build investment.

Refinancing to Access Better Rates or Release Equity

Refinancing an investment loan can reduce your interest rate, release equity for another purchase, or switch your repayment structure. Lenders regularly adjust their rates and offer discounts to attract new customers, so the rate you are paying may be higher than what is available to a new borrower. Refinancing allows you to access those lower rates without selling the property.

If your property has increased in value since purchase, refinancing can also release equity. The lender reassesses the property at current value and recalculates how much you can borrow. If the loan to value ratio has improved, you may be able to access additional funds while keeping your repayments manageable. This equity can be used to fund another deposit, complete renovations, or consolidate other debt.

How to Structure Multiple Investment Loans for Portfolio Growth

When you hold more than one investment property, the way you structure your loans affects your serviceability for future borrowing. Keeping each loan separate rather than cross-collateralising properties gives you flexibility to sell or refinance individual properties without affecting the others. Cross-collateralisation means the lender holds security over multiple properties for a single loan or loan package, which can limit your options later.

Separate loans for each property also make it easier to track deductions and manage your tax affairs. Interest on each loan is directly attributable to the property it funds, and there is no need to apportion expenses between properties. If you later decide to convert one property to your home, the loan structure is already separated, which simplifies the tax treatment.

Portfolio growth depends on maintaining sufficient borrowing capacity. Each new loan reduces your capacity for the next, so structuring loans with longer interest only periods or using offset accounts to manage cash flow can keep your serviceability intact while you acquire additional properties.

Building a property portfolio that delivers passive income and long-term wealth requires the right loan structure, an understanding of current tax rules, and a strategy that accounts for regulatory changes. Whether you are buying your first investment property or adding to an existing portfolio, the choices you make now will shape your cash flow, tax position, and capacity to grow over the next decade.

Call one of our team or book an appointment at a time that works for you to discuss how to structure your investment loan for your circumstances and goals.

Frequently Asked Questions