Avoid These 7 Mistakes When Buying Investment Property

Locking in a Purchase Before Checking Borrowing Capacity

Your borrowing capacity for rental property is assessed differently to an owner-occupied loan. Lenders calculate serviceability using a 3.0 percentage point buffer above the loan rate, apply higher risk weights to investor lending under prudential rules, and account for rental income at a discount of 20 per cent to allow for vacancy and maintenance periods. If you base your budget on what you could borrow as an owner-occupier, you will overestimate by a significant margin.

Consider a buyer with a gross household income of $140,000, no dependents, and minimal existing debt. Under owner-occupier serviceability assumptions, they may qualify for around $700,000. Under investor serviceability rules, the same income supports closer to $550,000, before factoring in rental income. Expected rental income improves the position, but lenders typically accept only 80 per cent of the rental appraisal when calculating your capacity. A property leased at $600 per week adds $24,960 annually, but serviceability is assessed on $19,968.

If you are relying on borrowing capacity to set your budget, request a full investor serviceability assessment from your broker before making offers. The calculation is not a simple adjustment. Lenders apply different debt-to-income settings, different treatment of deductions, and in some cases different buffers to interest-only loans. Assumptions you carry over from a previous owner-occupier approval will not apply.

Applying for a Loan Before Confirming the Property Qualifies

Not every residential property is acceptable security for an investment loan. Lenders exclude certain property types, including serviced apartments, dual-key units, properties with lease-back arrangements to the vendor, studio apartments below a specified size threshold, and properties located in regional postcodes with limited sales data or high vacancy rates. These exclusions are not disclosed until formal assessment.

In Queensland, serviced apartment stock is common in tourism precincts including the Gold Coast, Sunshine Coast and Cairns. A unit marketed with strong rental yields through an onsite management agreement may be unacceptable to multiple lenders due to restrictions on short-term letting as the primary form of tenure. Similarly, dual-key layouts designed for Airbnb use are typically excluded by major lenders, even where strata rules permit short-term accommodation.

Before making an offer subject to finance, provide your broker with the full property address, unit and lot plan reference if applicable, and a copy of the sales listing. This allows a preliminary lender suitability check. If the property is ruled out by your preferred lender, you have time to either adjust your lender panel or reconsider the purchase. Discovering the issue after your finance clause expires puts your deposit at risk.

Underestimating Deposit Requirements and Upfront Costs

Lenders cap investment lending at lower loan-to-value ratios than owner-occupier lending, and require genuine savings or equity to fund the deposit. For an established dwelling purchased as rental property, most lenders will lend up to 90 per cent of the property value, provided you pay Lenders Mortgage Insurance. Some lenders cap investor lending at 80 per cent regardless of LMI. If you are refinancing or using equity from an existing property, the amount you can access is also capped by LVR limits on the security property.

Beyond the deposit, you need to budget for stamp duty, conveyancing fees, LMI premium if applicable, building and pest inspection, loan application fees, and an amount to cover immediate repairs or strata levies. Stamp duty is not a trivial cost. In Queensland, stamp duty on a $600,000 investment property purchase is $17,325. Conveyancing typically adds $1,500 to $2,500. LMI on a 90 per cent LVR loan for $600,000 may add $15,000 to $20,000 depending on the lender and your profile.

If you are purchasing in an area where body corporate levies are high, factor in the first quarter's levy, which is usually payable at settlement. In inner-city Brisbane or new developments along the river precincts, quarterly levies can exceed $2,000. Add these costs to your deposit requirement and confirm you have access to those funds before entering a contract.

Choosing the Wrong Loan Structure for Your Tax Position

Interest on borrowings used to acquire rental property is deductible against assessable income, which makes the loan structure a material factor in your after-tax position. An interest-only loan maximises your annual deduction because you are not reducing the principal balance, but it does not reduce your debt over time. A principal-and-interest loan builds equity in the property, but reduces your deduction each year as the interest portion falls.

For properties acquired after 12 May 2026, losses from established rental properties can only be offset against other income from residential property from the 2027-28 income year onward. Properties classified as eligible new builds retain full deductibility of losses against all income, including salary and wages. If you are purchasing an established property after that date, your capacity to use negative gearing as a cash flow strategy is materially reduced unless you already hold other rental property generating positive income.

The choice between interest-only and principal-and-interest repayment structures should reflect your broader tax and wealth strategy, not just the immediate cash flow. If you are in a high marginal tax bracket and the property is negatively geared under the grandfathered rules, interest-only lending may reduce your after-tax holding cost. If you are relying on debt reduction to build equity for portfolio growth, principal-and-interest is appropriate. Your broker can model both structures, but the tax outcome depends on your individual circumstances and should be reviewed with your accountant.

Ignoring the Difference Between Variable and Fixed Rate Pricing on Investment Lending

Investor loans attract a margin above equivalent owner-occupier rates, typically between 0.20 and 0.60 percentage points depending on the lender, the loan amount, the LVR, and the repayment type. That margin applies to both variable and fixed rate products, but the size of the margin and the availability of rate discounts differ across lenders.

Some lenders offer deeper discounts on variable rate investment loans for borrowers with loan amounts above $500,000 or those who hold other products with the lender. Others offer limited or no discount on investment lending regardless of the loan size. Fixed rate investment loans generally carry less flexibility than variable loans. You cannot make extra repayments above a small annual threshold without incurring break costs, and redraw is often restricted or unavailable.

If you are considering a fixed rate, confirm the interest-only period available under that fixed term. Some lenders limit interest-only terms on fixed rate investment loans to a maximum of three years, even where the fixed rate term is five years. If your cash flow planning assumes interest-only repayments for five years, a product that reverts to principal-and-interest after three years will force a repayment increase mid-term. Check the product terms before locking in the rate.

Assuming Rental Income Will Cover All Holding Costs

Vacancy, maintenance, management fees and council rates erode rental income. A property leased at $550 per week generates $28,600 annually, but net rental income after a 6 per cent management fee, $2,500 in rates and insurance, and four weeks vacancy is closer to $23,000. If your loan repayments are $26,000 per year, the property is negatively geared by $3,000 before accounting for water, repairs, or strata levies.

In areas with higher vacancy rates, the gap between gross rent and net income widens. Some Queensland regional centres, including parts of Townsville and Cairns, have experienced periods where vacancy rates exceeded 4 per cent. If you are purchasing in a precinct with high unit supply or limited employment diversity, factor a higher vacancy assumption into your holding cost estimate.

Your lender will assess serviceability assuming 80 per cent of gross rental income, which is more conservative than the typical holding cost estimate, but that does not mean the property will be cash flow neutral. Budget for a shortfall and confirm you have surplus income or offset funds to cover the gap. If your personal cash flow is tight, a negatively geared property adds financial pressure, particularly in the first 12 months when unexpected repairs and tenant transitions are common.

Failing to Review Investment Loan Options Across Multiple Lenders

Investment loan pricing, LVR policy, interest-only terms, and acceptable security types vary widely between lenders. A lender that offers competitive rates on owner-occupied lending may be uncompetitive on investor products. A lender that accepts 90 per cent LVR for established units in metropolitan areas may restrict lending to 80 per cent LVR in regional Queensland postcodes.

Working with a broker who has access to investment loan options from banks and non-bank lenders across Australia allows you to compare product features, rates, and policy settings before committing to an application. Some lenders offer better interest rate discounts for larger loan amounts, others have lower fees, and some provide more flexible serviceability treatment of rental income for borrowers with multiple properties.

If you are purchasing a property type that sits outside mainstream lending policy, such as a large acreage block with a dwelling in a semi-rural area, or a unit in a regional town with limited comparable sales, a non-bank lender may be the only viable option. Non-bank lenders are not subject to the same debt-to-income limits as banks, which can provide additional capacity for experienced investors. Your broker will identify which lenders are willing to assess your application and which offer the most suitable product structure for your circumstances.

Rental property lending is not a generic product. The structure you choose, the lender you apply with, and the timing of your application all affect the outcome. Call one of our team or book an appointment at a time that works for you.

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