How to Finance an Established Investment Property

Understanding Investment Loan Options for Established Property

An investment loan is structured differently to a home loan because the lender assesses the property's rental income alongside your personal income, and the loan attracts higher scrutiny under lending rules.

When you buy an established investment property in Brisbane, you have access to both variable and fixed rate products. Variable rates respond to Reserve Bank movements and allow full flexibility with repayments. Fixed rates lock in a rate for one to five years, protecting you from rate increases but limiting your ability to make extra repayments without incurring break costs. Many investors split their loan between variable and fixed to balance stability with flexibility.

Consider an investor purchasing an established unit near Brisbane's inner north. They might fix 60 per cent of the loan amount for three years to manage cash flow certainty while renting the property, then leave 40 per cent on a variable rate with an offset account to park cash from their primary income. The variable portion gives them access to redraw or offset without penalty, while the fixed portion delivers predictable repayments if rates climb. That structure worked well during the rate rises from late 2022 through mid 2023, when fixed portions shielded part of the repayment from successive increases.

Interest-only repayments are another option. Under this structure, you pay only the interest portion each month for a set period, typically five years, which reduces the monthly outgoing but leaves the loan amount unchanged. Interest-only can improve cash flow in the early years of ownership, particularly if rental income is tight or you're carrying multiple properties. The downside is you're not reducing the debt, so your total interest cost over the life of the loan will be higher unless you make voluntary principal repayments into an offset or redraw. Lenders also assess interest-only loans more conservatively, and under APRA's framework, loans with interest-only terms exceeding five years and a loan-to-value ratio above 80 per cent are classified as non-standard, which typically means a higher interest rate.

Deposit and Borrowing Limits for Investment Property

Most lenders require a minimum deposit of 20 per cent of the purchase price for an investment loan, which keeps the loan-to-value ratio at or below 80 per cent and avoids Lenders Mortgage Insurance.

If you have less than 20 per cent deposit, you can still proceed but you'll pay LMI, which is a one-off premium calculated on the loan amount and LVR. The premium is capitalised into the loan or paid upfront, and it protects the lender, not you. In some cases, stamp duty may also apply to the LMI premium depending on your state. Going above 80 per cent LVR also means the lender will apply a higher risk weighting under APRA's prudential standards, which usually translates to a higher interest rate compared to loans at 80 per cent LVR or below.

Your borrowing capacity is shaped by your income, existing debts, living expenses, and the rental income the property will generate. Lenders apply a discount to the rental income, known as a shading factor, typically around 20 per cent, to account for vacancy periods and maintenance costs. They also assess your ability to service the loan at a rate that is at least 3.0 percentage points above the actual loan rate, which is APRA's serviceability buffer. That buffer has been in place since October 2021.

From February 2026, APRA introduced a debt-to-income lending limit. Each bank can lend up to 20 per cent of its new investor loans to borrowers with a total DTI ratio of six times or greater. If your total borrowing, including the new investment loan, exceeds six times your gross annual income, you may still qualify, but the lender has less room to approve your application within its quarterly limit. Non-bank lenders are not currently subject to the DTI limit, which gives them more flexibility in some cases.

How Rental Income Is Assessed by Lenders

Lenders calculate rental income by taking the advertised or appraised weekly rent, multiplying it by 52, then shading it by 20 per cent to account for vacancies and periods between tenants.

If a unit in New Farm is appraised to rent for $650 per week, the lender assesses annual rental income as $650 x 52 x 0.8, which equals $27,040. That figure is added to your other assessable income when calculating serviceability. If you already own an investment property with an existing loan, the lender will also take into account the rental income and loan repayments on that property. Where rental income does not cover the interest and principal repayment, the shortfall is treated as an expense and reduces your borrowing capacity for the new loan.

Brisbane vacancy rates have remained relatively low across most inner and middle-ring suburbs, which supports rental income assumptions. Inner-city unit markets, particularly around Fortitude Valley and South Brisbane, have seen higher turnover due to increased apartment supply, but rental demand from students and interstate workers has kept vacancies manageable. Lenders are familiar with Brisbane's rental market and will apply consistent shading regardless of suburb, but a property in a precinct with strong rental demand and low vacancy history will support a more confident appraisal.

Variable Rate vs Fixed Rate for Property Investors

Variable rates give you full flexibility to make extra repayments, access offset accounts, and refinance without penalty, but they move with the broader interest rate environment.

Fixed rates lock in your repayment for a set term, which can protect you if rates rise but will cost you break fees if you exit the loan early or make repayments above the annual limit. Break costs are calculated based on the difference between your fixed rate and the lender's current wholesale funding cost for the remaining fixed term. If rates have fallen since you fixed, break costs can be substantial. If rates have risen, break costs may be zero or even result in a credit.

Many Brisbane investors we work with choose a split structure, fixing part of the loan for stability and leaving part variable for flexibility. A 50-50 split is common, but the right mix depends on your risk tolerance, cash flow, and plans for the property. If you intend to sell or refinance within three years, a shorter fixed term or a higher variable portion reduces the chance of paying break costs. If you want certainty and plan to hold the property long term, a higher fixed portion or a longer fixed term may suit.

Offset accounts are typically available only on variable rate loans or the variable portion of a split loan. An offset account is a transaction account linked to your loan. The balance in the offset reduces the loan balance on which interest is calculated, which saves you interest without technically making extra repayments. For investors, offset accounts are particularly useful because they preserve deductibility. If you pay down the loan principal directly, you reduce the deductible debt. If you park surplus cash in an offset, you reduce the interest cost while keeping the full loan amount deductible.

Principal and Interest vs Interest Only Repayments

Principal and interest repayments reduce the loan amount over time, which builds equity and reduces total interest cost, but they result in higher monthly repayments.

Interest-only repayments lower the monthly cost and improve cash flow, but you do not reduce the loan amount during the interest-only period. At the end of the interest-only term, the loan reverts to principal and interest repayments, and the monthly repayment increases because the remaining principal must be repaid over a shorter period.

Interest-only can make sense where you want to maximise cash flow to service other debts, build an offset balance, or invest surplus cash elsewhere. It can also suit investors who plan to sell the property within five to ten years and prioritise tax deductions over equity growth. The entire interest component of an investment loan is deductible, so a higher interest cost delivers a higher deduction. However, interest-only loans attract higher rates from most lenders, and APRA's framework means loans with long interest-only terms and high LVRs are classified as non-standard.

If you choose interest-only, it's worth reviewing the structure every few years. Some investors start with interest-only to manage cash flow in the early years, then switch to principal and interest once their income increases or they've built a cash buffer in an offset account. Others maintain interest-only across multiple properties to keep repayments low and maximise portfolio growth.

Tax Treatment and Deductibility Rules

Interest on an investment loan is deductible against your assessable income, along with other holding costs such as property management fees, council rates, insurance, and depreciation.

If your deductible expenses exceed your rental income, the property is negatively geared, and the loss can be offset against your other income, including salary and wages. For properties held at 7:30pm AEST on 12 May 2026, or purchased under contract before that time, negative gearing remains fully deductible regardless of when you lodge your return. The same applies to eligible new builds purchased after that date.

From the 2027-28 income year, losses on established residential investment properties acquired after 12 May 2026 can only be offset against other residential property income, including capital gains on residential property. Excess losses can be carried forward. If you purchase an established investment property in Brisbane now, the new rules will apply to your deductions from the 2027-28 financial year onward. The property remains deductible, but the loss is quarantined to residential property income rather than being available against salary or business income.

Capital gains tax treatment is also changing. Gains accruing up to 1 July 2027 continue to receive the 50 per cent CGT discount if you've held the property for more than 12 months. From 1 July 2027, gains are calculated using cost base indexation for inflation, and a 30 per cent minimum tax rate applies to real gains. Properties owned before 1 July 2027 and sold afterward will have gains split between the old and new rules, either using a market valuation as at 1 July 2027 or an ATO apportionment formula. For investors purchasing now, the change means lower tax on sale if inflation is high, but a minimum 30 per cent rate even if your marginal rate is lower.

Structuring Loans Across Multiple Properties

If you already own property or plan to build a portfolio, loan structure becomes more important than rate alone.

Keeping each investment loan separate, rather than cross-collateralising properties, gives you more flexibility to sell or refinance individual properties without requiring the lender's consent across your entire portfolio. Cross-collateralisation occurs when a lender takes security over multiple properties for a single loan or linked loans. It can sometimes help you borrow more or avoid LMI, but it locks your properties together. If you want to sell one property, the lender may require you to refinance the remaining loans or reduce the debt to an acceptable level before releasing the security.

Many investors structure their loans so each property has its own loan and its own security. That way, you can refinance one property to a different lender, or sell one property and repay its loan, without affecting the others. It also makes tax reporting cleaner because each loan and each property has a clear deductible interest amount tied to it.

If you're planning to buy multiple investment properties over time, it's worth discussing structure with a broker before you take out your first investment loan. Changing structure later, particularly if properties are cross-collateralised, can be expensive and time-consuming.

Refinancing and Accessing Equity

Once your property increases in value or you pay down the loan, you can access that equity to fund further investment or other purposes.

Equity is the difference between the property's current value and the loan amount secured against it. If a property is worth $700,000 and the loan is $500,000, your equity is $200,000. Lenders will typically let you borrow up to 80 per cent of the property's value without LMI, which means you could increase the loan to $560,000 and release $60,000 in equity. If you use that equity to purchase another investment property, the interest on the additional borrowing is deductible because the funds are used for an income-producing purpose.

Refinancing an investment loan can also deliver a lower rate or better loan features. If your current loan was taken out several years ago, you may be paying a higher rate than what is available now, particularly if you've been on the lender's standard variable rate without a discount. A refinance can reduce your repayments, switch from principal and interest to interest-only or vice versa, or consolidate debt from other sources into the investment loan.

When refinancing, lenders reassess your serviceability using current income, expenses, and interest rates. If your circumstances have changed or your income has increased, you may be able to borrow additional funds at the same time. Keep in mind that refinancing involves discharge fees from your current lender, application fees and valuation costs with the new lender, and in some cases legal costs. A broker can compare the cost of refinancing against the ongoing saving to confirm the move makes financial sense.

What Happens If You Can't Make Repayments

If rental income drops, a tenant leaves, or your personal circumstances change, you may struggle to meet your loan repayments.

Under the National Credit Code, you can give your lender a hardship notice, either in writing or verbally, if you're unable to meet your obligations. The lender has 21 days to request further information, and once they receive it, they must respond within 21 days. They can agree to change the contract, for example by reducing repayments, pausing repayments, or extending the loan term, or they can refuse and provide you with contact details for the Australian Financial Complaints Authority.

Hardship provisions apply to regulated loans, which includes most investment loans held by individuals. Loans to companies or loans used wholly or predominantly for business purposes fall outside the National Credit Code, so if you've structured your investment property under a company or trust, hardship protections may not apply.

If you're experiencing difficulty, contact your lender or broker as soon as possible. Lenders would rather work with you to find a solution than move to enforcement. Options may include switching from principal and interest to interest-only repayments, capitalising arrears, or agreeing to a temporary repayment pause. If the property is negatively geared and your personal income has dropped, you may also need to review your overall portfolio and consider selling one property to reduce debt and improve cash flow.

Brisbane's rental market has remained relatively strong, but vacancy periods do occur, particularly in higher-density precincts. Building a cash buffer in an offset account or having access to redraw gives you breathing room if a tenant leaves or the property requires unexpected maintenance. Most investors we work with aim to hold at least three months of repayments in reserve.

If you're thinking about buying an established investment property in Brisbane and want to talk through loan options, deposit requirements, or structuring across multiple properties, call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions