Beginner's Guide to Investment Loans for Rental Property

What an Investment Loan Actually Is

An investment loan is finance secured against a property you intend to rent out rather than live in. Lenders assess these applications differently because your ability to service the loan depends partly on rental income and partly on your other earnings.

The structure you choose affects cashflow, borrowing capacity and your tax position. Most investors split their thinking between interest-only periods to manage holding costs and principal-and-interest to build equity over time. Both have a place depending on what else is happening in your circumstances.

How Deposit Requirements Differ for Investors

You need a larger deposit when purchasing an investment property. Lenders typically require at least 10 per cent genuine savings plus enough to cover Lenders Mortgage Insurance if your loan to value ratio exceeds 80 per cent. At that threshold, LMI adds several thousand dollars to your upfront costs.

Stamp duty in Victoria is payable in full at settlement and cannot be added to the loan. For a dwelling near Armadale's median, that figure sits between $30,000 and $50,000 depending on the purchase price. You also need funds for conveyancing, building and pest reports, and a buffer for any body corporate or immediate maintenance.

Consider a buyer who already owns a home in Malvern and wants to add a two-bedroom unit near High Street. With equity in the existing property, they can often borrow the deposit and avoid dipping into cash reserves. We regularly see clients structure it this way, particularly when they want to preserve liquidity for other portfolio decisions. That approach introduces cross-collateralisation, so it pays to understand how releasing that security later works if you want to sell or refinance one property independently.

Borrowing Capacity and the Serviceability Buffer

Lenders add a three percentage point buffer to the loan's interest rate when calculating whether you can afford the repayments. That buffer has been in place since mid-2021 and remains unchanged. If the variable rate on the loan is 6.5 per cent, the lender assesses you at 9.5 per cent.

Rental income is included in the calculation but discounted. Most lenders apply 80 per cent of the expected rent to account for periods of vacancy and ongoing costs like rates, insurance and agent fees. They also apply a vacancy rate adjustment in their models, typically assuming the property is untenanted for three to four weeks each year.

The debt-to-income cap introduced in February limits how much you can borrow relative to your gross income. Lenders can approve up to 20 per cent of their new investor lending at a DTI of six times or higher, but most are more conservative in practice. If your household income is $150,000, a DTI of six would allow total borrowing of $900,000 across all loans. That figure includes your existing home loan and any personal debt, not just the new investment loan amount.

Interest Rate Structure and Claimable Expenses

Investor interest rates sit slightly above owner-occupier rates. The difference is usually between 0.20 and 0.40 percentage points depending on the lender and your loan to value ratio. A variable rate gives you flexibility to make extra repayments or redraw without penalty, while a fixed rate offers certainty over repayments for a set term.

Interest on the loan is a claimable expense provided the property is rented or genuinely available for rent. You can also claim depreciation on fixtures and fittings, council and water rates, insurance, body corporate fees, property management, and repairs. Loan establishment fees and ongoing account-keeping fees are deductible in the year they are incurred.

Changes legislated in June alter how rental losses are treated from July next year. If you purchase an established dwelling after 12 May this year, any loss from that property can only be offset against other residential rental income or carried forward. It cannot reduce your salary or wage income. Properties purchased before that date, or eligible new builds, continue under the existing rules. That distinction matters when you model cashflow over the first few years, particularly if you were relying on negative gearing to manage holding costs.

Why Loan Features Matter More Than Rate Alone

An offset account attached to an investment loan allows you to park surplus funds and reduce the interest charged without losing the deduction. Because the loan balance stays the same, the full interest amount remains claimable even though you are paying less.

A redraw facility lets you access extra repayments you have made, which can be useful if you need cash for another deposit or an unexpected repair. The difference lies in how the ATO views offset versus redraw. Funds in offset remain separate and do not affect deductibility. Money withdrawn from redraw may change the deductible portion of your interest if it is used for a private purpose.

Portability is another feature worth securing. If you decide to sell the Armadale unit and purchase another property, a portable loan allows you to transfer the facility without reapplying or paying discharge fees. Not all lenders offer it, and it is rarely mentioned unless you ask.

Refinancing After the Fixed Period Ends

Many investors fix their rate for two or three years when they first purchase. When that term expires, the loan reverts to the lender's variable rate, which is often higher than what new customers receive. At that point, you can negotiate a rate discount with your current lender or refinance to a new one.

Refinancing an investment property works the same way as an owner-occupied loan except rental income is included in the application. If the property has increased in value, your loan to value ratio improves and you may qualify for a lower rate or access equity for further investment. Lenders reassess your serviceability using current income, current debt and current rates, so any change in your circumstances since the original loan was approved will be taken into account.

If you have built a portfolio of two or more properties, it is worth reviewing the structure every few years. Consolidating loans can reduce fees, but separating them can give you more flexibility if you want to sell one property and retain the others. There is no universal answer, it depends on where you are in the cycle and what you intend to do next.

What Happens When Policy Shifts Mid-Strategy

The changes made this year were not forecast in most investors' models 18 months ago. If you purchased in late 2025 expecting to negatively gear the loss and are now holding through the transition period, the cashflow difference becomes real from July next year.

In our experience, clients who structured their affairs assuming a particular tax treatment often need to revisit the numbers once the rules shift. That does not mean the property becomes unviable, but it may mean holding it longer to reach the same net position or adjusting how much you allocate to the next purchase.

The capital gains tax changes apply only to gains accruing after July next year, and only on properties purchased after 12 May this year. If you acquired the property earlier, existing CGT rules continue to apply. The shift from a 50 per cent discount to cost base indexation with a minimum 30 per cent rate affects how much tax you pay on sale, particularly if you hold the asset for more than a decade. The longer the holding period, the more the indexation offsets inflation, but the minimum rate puts a floor under the tax regardless.

Eligible new builds retain access to the 50 per cent discount, and buyers of those properties can elect which method to use. That difference in treatment is designed to steer investment toward supply rather than established stock. Whether it does depends on construction costs, land availability, and the gap between new and established prices in the area you are targeting.

Location Context for Armadale Investors

Armadale sits within the City of Stonnington, bordered by Malvern to the east and Prahran to the west. The suburb has a mix of older character homes and contemporary low-rise apartments, with most rental stock concentrated in the streets between High Street and Glenferrie Road. Proximity to train stations at Armadale and Toorak, and the tram along High Street, keeps rental demand consistent.

The tenant profile skews toward young professionals and downsizers who want access to Chapel Street, the Prahran Market precinct, and the cafes around Armadale village. Vacancy rates in Stonnington have historically sat below the metropolitan average, though that figure fluctuates depending on the volume of new apartment completions in adjacent areas like South Yarra.

Body corporate fees on units in the suburb vary widely depending on the age of the building and what facilities are included. Older walk-up blocks typically charge $1,000 to $2,000 per quarter, while newer developments with lifts, gyms and concierge can exceed $3,000. That recurring cost directly affects net rental yield and borrowing capacity, so it needs to be factored in before you commit.

If you are considering an investment property loan in Armadale or surrounding suburbs, the structure you choose should reflect how long you intend to hold the asset and whether you plan to add more properties. Interest-only keeps your repayments lower in the short term but does not reduce the principal. Principal and interest builds equity steadily but increases your monthly outlay. Both are valid depending on what else you are managing.

Call one of our team or book an appointment at a time that works for you. We work with buyers across Armadale, Malvern, Toorak and the broader Stonnington area, and we access investment loan options from banks and lenders across Australia.

Frequently Asked Questions