How to Use a Home Equity Loan to Buy an Investment Property in Australia
Using equity from your existing home to fund an investment property is a popular wealth-building strategy in Australia. With property values remaining strong in many markets through 2025, homeowners have an opportunity to unlock capital without selling their primary residence. This guide walks you through the process step by step, covering loan structures, tax considerations, lender requirements, and risks.
What Is a Home Equity Loan and How Does It Work?
A home equity loan allows you to borrow against the value of your existing property. In Australia, this is commonly structured as a line of credit or a separate loan secured by your home. The equity you can access is the difference between your property’s current market value and the outstanding mortgage balance.
For example, if your home is worth $800,000 and you owe $400,000, you have $400,000 in total equity. Lenders typically allow you to borrow up to 80% of the property value, minus any existing debt. In this case, 80% of $800,000 is $640,000, so you could potentially access $240,000 ($640,000 - $400,000) for investment purposes.
Types of Equity Loans
- Line of credit: A flexible facility where you draw funds as needed, paying interest only on the amount used.
- Lump sum loan: A fixed amount borrowed upfront, with principal and interest repayments.
- Cross-collateralisation: Using both your home and the new investment property as security for one loan (more on this later).
Step-by-Step Process to Buy an Investment Property with Equity
Step 1: Assess Your Current Equity
Obtain a professional valuation of your home. Lenders will use their own valuer, but you can get an estimate from a local real estate agent. Calculate your usable equity: (Property value × 0.8) – existing mortgage.
Step 2: Determine Your Borrowing Capacity
Lenders assess your income, expenses, existing debts, and the projected rental income from the investment property. As of 2025, most lenders apply a 3% serviceability buffer above the loan rate. Use online calculators or speak to a mortgage broker to estimate how much you can borrow.
Step 3: Choose a Loan Structure
Decide whether to set up a separate investment loan or use a line of credit against your home. Many investors prefer a separate loan to keep finances clean for tax purposes. Cross-collateralisation can be risky; if one property underperforms, both may be at risk.
Step 4: Get Pre-approval
Apply for conditional approval with your chosen lender. You’ll need:
- Proof of income (pay slips, tax returns)
- Details of assets and liabilities
- Identification documents
- Information about the target investment property (if identified)
Step 5: Find the Right Investment Property
Research areas with strong rental yields and capital growth potential. In 2025, regional markets in Queensland and Western Australia show promise, but always conduct thorough due diligence.
Step 6: Finalise the Loan and Purchase
Once you’ve found a property, the lender will value it and issue formal approval. Your solicitor or conveyancer will handle the settlement.
Tax Implications of Using Equity for Investment
One major advantage of using equity to buy an investment property is that the interest on the borrowed funds may be tax-deductible. However, the deductibility depends on the purpose of the loan, not the security. If you redraw equity from your home and use it for investment, the interest is deductible. But if you mix personal and investment expenses in a line of credit, it becomes complex.
Key Tax Rules
- Interest deductibility: Only the portion of the loan used for income-producing purposes is deductible.
- Capital Gains Tax (CGT): When you sell the investment property, you’ll pay CGT on the profit. Holding the property for more than 12 months entitles you to a 50% discount.
- Depreciation: Claim deductions for the decline in value of the building and its fixtures.
- Negative gearing: If the rental income is less than the expenses, you can offset the loss against your other income.
Consult a qualified tax accountant to structure your finances correctly from the start.
Lender Requirements and Loan Features in 2025
Australian lenders have tightened some criteria in response to economic conditions, but equity release remains accessible for well-qualified borrowers.
Typical Lender Criteria
| Requirement | Details |
|---|---|
| Loan-to-value ratio (LVR) | Up to 80% for equity release (some lenders up to 90% with LMI) |
| Credit score | Good to excellent (typically 650+) |
| Income verification | Stable employment history, recent pay slips or tax returns |
| Rental income | Lenders usually use 75-80% of projected rent |
| Existing debts | Credit cards, personal loans, HECS/HELP considered |
| Age of borrower | Most require loan term to end before age 70 or 75 |
Lenders Mortgage Insurance (LMI) may apply if you borrow more than 80% of the property value. Some lenders offer waived LMI for professionals like doctors and lawyers.
Risks and How to Mitigate Them
Over-leveraging
Borrowing too much can strain your finances if interest rates rise or rental income drops. Keep a cash buffer and consider fixing part of your loan.
Market Downturn
Property values can fall, leaving you with negative equity. Invest for the long term and choose locations with diverse economic drivers.
Cash Flow Shortfalls
Unexpected repairs or vacancies can disrupt your budget. Budget for at least 2-3 months of expenses.
Cross-collateralisation Risks
If your loans are linked, the lender can sell both properties if you default. Use separate loans for each property to limit exposure.
Comparison of Loan Options for Equity Release
| Feature | Line of Credit | Separate Investment Loan | Cross-collateralised Loan |
|---|---|---|---|
| Flexibility | High – draw as needed | Low – fixed amount | Low – tied to both properties |
| Interest rate | Usually variable | Fixed or variable options | May get a lower rate |
| Tax deductibility | Complex if mixed use | Clear if purely for investment | Clear but risky |
| Risk | Only home at risk | Only investment at risk | Both properties at risk |
| Setup cost | Moderate | Moderate to high | Lower initial cost |
FAQ
Can I use equity to buy an investment property without a deposit?
Yes, if you have sufficient equity in your home, you can fund the entire purchase and costs without a cash deposit. This is called 100% offset or using equity as a deposit.
Is interest on a home equity loan tax-deductible for an investment property?
Yes, provided the borrowed funds are used for investment purposes. You must keep clear records to show the direct link between the loan and the property purchase.
How much equity do I need to buy an investment property?
Typically, you need enough equity to cover a 20% deposit plus purchase costs (stamp duty, legal fees). Lenders may allow borrowing up to 80% of your home’s value minus your existing mortgage.
What are the risks of using equity to invest in property?
The main risks include over-leveraging, interest rate rises, property market declines, and rental income shortfalls. Proper planning and a financial buffer can help mitigate these risks.
Can I use a redraw facility instead of a separate loan?
Yes, but it’s not recommended for tax reasons. Mixing personal and investment debt in one account makes it hard to calculate deductible interest. A separate split loan is cleaner.
References
- Australian Taxation Office. “Rental Properties 2025.” https://www.ato.gov.au/individuals-and-families/investments-and-assets/rental-properties
- Australian Securities and Investments Commission. “Home Loans and Equity.” https://moneysmart.gov.au/home-loans
- Reserve Bank of Australia. “Statement on Monetary Policy – May 2025.” https://www.rba.gov.au/publications/smp/2025/may/
- CoreLogic Australia. “Housing Market Update June 2025.” https://www.corelogic.com.au/news-research
- Mortgage Choice. “Using Equity to Buy an Investment Property.” https://www.mortgagechoice.com.au/guides/property-investment/using-equity-to-buy-an-investment-property/