Investment property loans in Australia work on the same fundamental principles as owner-occupier loans, but they differ in pricing, policy, and assessment methodology in ways that matter significantly to your borrowing capacity and cash flow.
Investment property loans typically carry interest rates 0.2–0.5% higher than equivalent owner-occupier loans. This differential exists because APRA (the Australian Prudential Regulation Authority) has historically required banks to hold more capital against investment loans, reflecting the higher default risk associated with investment lending (investors are more likely to sell in a downturn than owner-occupiers).
At current market rates, a standard owner-occupier variable rate might be 6.0–6.5%, while the equivalent investment loan sits at 6.3–7.0%. Over a $600,000 loan, a 0.4% rate premium adds approximately $140/month and over $50,000 over the full loan term.
Most lenders cap investment property loans at 80% LVR (20% deposit minimum) for their standard pricing. Some lenders will go to 90% LVR with LMI, but this is less common for investment properties, and LMI providers charge higher premiums for investment loans. APRA's macro-prudential guidance has historically resulted in banks tightening investment LVR policies during periods of rapid property price growth.
Lenders do not count 100% of the expected rental income when calculating your borrowing capacity. The standard approach is to count 80% of gross rental income (with some lenders using 75%). This discount accounts for vacancy periods, property management fees, and maintenance costs.
For a property expected to rent at $2,500/month, the lender will assess $2,000/month (80%) as income. They also assess your capacity to service the loan based on P&I repayments (not interest-only, even if you plan to use an IO loan) at a stressed rate of approximately 9–10%.
Rental income from the property you are buying: Some lenders will use expected rental income (based on a rental appraisal letter from a property manager) before you have tenants in place. Others will only use actual rental income. This policy difference can significantly affect your assessed borrowing capacity for the purchase.
An investment property is negatively geared when the rental income received is less than the deductible expenses associated with the property (interest, depreciation, management fees, repairs). The resulting loss is deductible against your other income, reducing your tax payable. At a 37% marginal tax rate, a $10,000/year negative gearing loss saves $3,700 in tax — though you are still $6,300/year cash-flow negative. Negative gearing only works as a strategy if you expect capital growth to offset the ongoing cash shortfall.
Interest-only (IO) loans are more commonly used by investors than owner-occupiers, because:
However, IO periods are typically capped at 5 years for investment loans. After the IO period, the loan reverts to P&I on the remaining balance, and repayments jump significantly. APRA has also periodically restricted IO lending growth at the sector level, making IO loans harder to obtain during restriction periods.
APRA can and has imposed macro-prudential measures on investment lending when it considers risks to be elevated. Between 2015–2018, APRA imposed a 10% annual cap on investment lending growth and restrictions on IO loan volumes. If you are an investor applying during a period of APRA restriction, some lenders may have reached their internal caps and be unable to offer competitive rates or terms for new investment loans.
Cross-collateralisation occurs when a lender takes security over multiple properties as collateral for one or more loans. While it can allow you to access equity in one property to fund another without refinancing, it creates significant problems: you cannot sell one property without the lender's consent on the entire cross-collateralised portfolio, refinancing becomes complicated, and if the portfolio value falls, the lender can demand you reduce all loans simultaneously.
Avoid cross-collateralisation where possible. Most experienced property investors structure each property with a standalone loan, accessing equity through individual refinances as needed. This maintains flexibility and avoids portfolio-wide lender control.
When IO loans make sense and what happens when the period ends.
Read guide →How to refinance your investment loan to a better rate.
Read guide →Model investment loan repayments at different rates and terms.
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