5 Things Every Property Investor Needs to Know About Investment Loans

Property investment is one of Australia’s most popular wealth-building strategies — and for good reason. But the financing strategy you use can make or break your returns. Here are five critical factors every property investor needs to understand.

1. Interest-Only vs. Principal & Interest

For investment properties, many investors choose interest-only (IO) repayments for the first 5 years. Why?

• Higher cash flow: Lower repayments mean more money in your pocket each month
• Tax deductibility: Interest on investment loans is tax deductible — principal repayments are not
• Capital growth focus: If your strategy is capital growth, paying down principal isn’t the priority

However, IO loans typically carry a higher interest rate, and once the IO period ends, your repayments jump significantly. Ensure you can afford the transition.

2. Loan Structure Matters Enormously

How you structure your investment loan affects your flexibility, tax position, and long-term portfolio capacity. Key considerations:

• Separate loans for each property — don’t cross-collateralise if you can avoid it
• Keep investment and owner-occupied loans separate — you can only claim interest on investment loans
• Offset accounts on owner-occupied loans — put all your cash here, not against investment loans

A poorly structured loan portfolio can cost you thousands in tax efficiency and limit your ability to buy more properties.

3. Understand How Lenders Assess Investment Income

Lenders assess rental income conservatively — typically at 70–80% of actual rental income to account for vacancy and expenses. This means your rental income contributes less to your borrowing capacity than you might expect.

Lenders also assess your existing debts (including investment loan repayments) at a stressed rate of 7–8%, regardless of the actual rate. This is the biggest limiter for investors expanding their portfolios.

4. Keep an Eye on Your LVR Across All Properties

Lenders look at your total borrowings across all properties. As you accumulate debt, you may find:

• Your next application assessed more strictly
• You need to provide more equity in each new purchase
• Certain lenders cap total investment exposure

Having a long-term portfolio plan — and a broker who understands investment lending — is essential to ensure each purchase doesn’t restrict the next.

5. SMSF Property Investment Is Possible — But Complex

Purchasing investment property through a Self-Managed Super Fund (SMSF) is a legitimate strategy with significant tax advantages. However, SMSF loans (called Limited Recourse Borrowing Arrangements) are highly regulated and have specific requirements around:

• Property type (no residential property you or related parties can live in)
• Minimum fund balance (typically $200k+)
• Higher interest rates and stricter lending criteria
• Ongoing compliance requirements

Always work with specialist SMSF brokers and a good SMSF accountant.

The Bottom Line

Investment property lending is a specialist area. The wrong structure can cost you tens of thousands over the life of your portfolio. The right broker will look beyond the immediate transaction and help you build a sustainable, tax-effective portfolio for the long term.

Our investment finance specialists work with both first-time investors and experienced portfolio holders. Book a free consultation to discuss your strategy.