How to Leverage Home Equity for an Investment Property in Australia: A Step-by-Step Guide
Photo by Anna Guerrero on Pexels
)
For many Australian homeowners, the dream of building a property portfolio starts with the home they already own. As property values rise, so does the equity in your home—and that equity can be a powerful tool to finance an investment property. This guide walks you through the process of using your home equity to buy an investment property, covering everything from calculating usable equity to structuring loans, understanding tax implications, and avoiding common pitfalls.
What Is Home Equity and How Does It Work?
Home equity is the difference between your property’s current market value and the outstanding balance on your mortgage. For example, if your home is worth $900,000 and you owe $400,000, your equity is $500,000. However, not all of that equity is “usable” for borrowing. Lenders typically allow you to access up to 80% of your property’s value, minus what you owe, to maintain a safe loan-to-value ratio (LVR).
Calculating Usable Equity
To determine how much equity you can tap into:
- Estimate your property’s current market value – Use recent comparable sales or a professional appraisal.
- Calculate 80% of that value – This is the maximum total lending most banks will allow against an owner-occupied property without requiring Lenders Mortgage Insurance (LMI).
- Subtract your existing loan balance – The result is your usable equity.
For instance, on a home valued at $900,000 with a $400,000 loan:
- 80% of $900,000 = $720,000
- Usable equity = $720,000 – $400,000 = $320,000
This $320,000 could be used as a deposit for an investment property, along with covering purchase costs like stamp duty. Keep in mind that some lenders may offer higher LVRs (up to 90% or 95%) for investment loans, but this usually triggers LMI, which can add thousands to your costs.
Step-by-Step Guide to Using Equity for an Investment Property
Step 1: Assess Your Financial Position
Before approaching a lender, review your financial health. Lenders will assess your income, expenses, existing debts, and credit history to determine your borrowing capacity. Use a borrowing power calculator to estimate how much you can afford. Remember that rental income from the proposed investment property will be considered, usually at a shading rate of around 75–80% to account for vacancies and expenses.
Step 2: Get a Property Valuation
A formal valuation is often required by the lender to confirm your home’s equity. You can order a valuation through your bank or an independent valuer. The valuation may differ from your own estimate, so it’s wise to research recent sales in your area beforehand.
Step 3: Choose the Right Loan Structure
There are several ways to structure the financing:
- Equity Release (Cash-Out Refinance): Refinance your existing home loan to access a lump sum of cash from your equity. This cash can then be used as a deposit for the investment property. The new loan may have a higher balance, and you’ll need to ensure you can service the increased repayments.
- Line of Credit (LOC): Set up a line of credit secured against your home, up to the usable equity limit. You only draw funds when needed, and you pay interest only on the drawn amount. This offers flexibility but often comes with higher interest rates.
- Cross-Collateralisation: Some lenders may suggest using both your home and the new investment property as security for one loan. While this can simplify the loan structure, it ties the two properties together, reducing flexibility if you want to sell or refinance later. Many experts advise against cross-collateralisation due to the risks.
- Standalone Investment Loan: Instead of using your home as security, you can take out a separate loan for the investment property using the released equity as the deposit. This keeps the properties unlinked and is generally the preferred structure for tax and asset protection purposes.
Step 4: Apply for Pre-Approval
Once you’ve chosen a structure, apply for conditional pre-approval. This gives you a clear budget and shows real estate agents you’re a serious buyer. Provide all necessary documents: payslips, tax returns, bank statements, and details of existing debts.
Step 5: Find the Right Investment Property
With pre-approval in hand, search for a property that aligns with your investment goals—whether it’s capital growth, rental yield, or a balance of both. Consider location, infrastructure projects, vacancy rates, and potential for depreciation benefits.
Step 6: Finalise the Loan and Purchase
After your offer is accepted, the lender will conduct a valuation on the investment property and finalise the loan. Ensure you have funds to cover stamp duty, legal fees, and other upfront costs. Once settled, you become a property investor.
Loan Structures and LVR Limits: What You Need to Know
Understanding loan-to-value ratio (LVR) rules is critical when using equity. For owner-occupied properties, most lenders cap LVR at 80% without LMI. For investment properties, the maximum LVR is often 90% or even 95% with LMI, but this increases your risk and costs.
| Loan Type | Maximum LVR (without LMI) | Typical Interest Rate | Key Consideration |
|---|---|---|---|
| Owner-occupied (equity release) | 80% | Lower than investment loans | Funds used as deposit for IP |
| Investment property loan (standalone) | 80–90% (up to 95% with LMI) | Higher than OO loans | Interest may be tax-deductible |
| Line of credit | 80% | Often higher variable rate | Flexible but requires discipline |
| Cross-collateralised loan | 80–90% combined | Negotiable | Reduced flexibility, higher risk |
Data sourced from major Australian lenders’ policies as of 2025.
The Tax Angle: Interest Deductibility
One of the biggest advantages of using equity for an investment property is the potential tax deduction on interest. However, the deductibility depends on the purpose of the borrowed funds, not the security. If you release equity from your home and use those funds to buy an income-producing asset, the interest on that portion of the loan may be tax-deductible. It’s essential to set up the loan correctly—ideally with a separate split or a standalone investment loan—to clearly trace the use of funds. Always consult a tax professional to ensure compliance with Australian Taxation Office (ATO) rules.
Risks and How to Mitigate Them
Over-Leveraging
Borrowing against your home increases your total debt. If property values fall or interest rates rise, you could face financial stress. Mitigation: Maintain a cash buffer and avoid borrowing to your maximum capacity.
Cross-Collateralisation Pitfalls
Linking your home and investment property as security can backfire. If one property underperforms, the lender may restrict your ability to sell or refinance the other. Mitigation: Opt for standalone loans where possible.
Negative Gearing Risks
While negative gearing offers tax benefits, it means your investment property is running at a loss. This can strain your cash flow if rental income drops or expenses spike. Mitigation: Stress-test your budget with a 2–3% interest rate rise and factor in vacancies.
Market Volatility
Property markets cycle. Buying at a peak could mean years of flat or negative growth. Mitigation: Invest for the long term (7–10 years) and focus on locations with strong fundamentals.
Tax Considerations and Depreciation Benefits
Investment properties come with a range of tax deductions:
- Loan interest: As mentioned, interest on the portion of the loan used for the investment may be deductible.
- Depreciation: Claim deductions on the building’s construction cost (capital works) and on plant and equipment assets (e.g., carpets, appliances). A quantity surveyor’s tax depreciation schedule is essential.
- Ongoing expenses: Property management fees, council rates, insurance, repairs, and maintenance are generally deductible.
Keep meticulous records and engage a qualified accountant to maximise your deductions while staying compliant.
Case Study: Using Equity to Build a Portfolio
Meet Sarah and Tom. They own a home in Melbourne valued at $1.1 million with a $400,000 mortgage. Their usable equity is approximately $480,000 (80% of $1.1M = $880,000 – $400,000). They decide to use $200,000 as a 20% deposit plus costs to buy a $800,000 investment property in Brisbane. They set up a separate investment loan for the remaining $640,000. The rental income covers about 80% of the mortgage repayments, and they claim interest and depreciation deductions, reducing their taxable income. Over five years, the investment property grows in value, and they repeat the process to buy a second investment.
FAQ
Can I use equity if I have a low income?
Yes, but your borrowing capacity will be limited. Lenders assess your ability to service the debt based on your income, expenses, and existing commitments. Rental income from the investment property is considered, but only a portion (usually 75–80%) is counted. If your income is low, you may need a larger deposit or a guarantor.
Is it better to use a line of credit or a lump sum equity release?
It depends on your needs. A line of credit offers flexibility—you only draw what you need and pay interest on the drawn amount. However, interest rates are often higher. A lump sum release gives you a fixed amount with a potentially lower rate but less flexibility. For disciplined investors, a line of credit can work well; others may prefer the certainty of a lump sum.
What are the tax implications of using home equity for an investment property?
The interest on the portion of the loan used for investment purposes is generally tax-deductible. However, if you mix personal and investment borrowings in one account, it can complicate deductions. Always set up a separate loan split or account for the investment portion. Consult a tax professional to ensure you structure it correctly from the start.
Do I have to pay Lenders Mortgage Insurance (LMI) when using equity?
If your total borrowings exceed 80% of your home’s value (for the equity release) or 80% of the investment property’s value (for the investment loan), LMI may apply. LMI protects the lender, not you, and can cost thousands. It’s often possible to avoid LMI by keeping LVR at or below 80%.
Can I use equity from an investment property to buy another?
Yes, the same principles apply. You can access equity in an existing investment property to fund the deposit for a subsequent purchase. The process is similar, but lending policies may differ for investment properties, often with slightly lower maximum LVRs.
References
- Australian Taxation Office, “Rental properties – deductions you can claim,” 2025. https://www.ato.gov.au/individuals-and-families/investments-and-assets/rental-properties/rental-property-expenses
- Australian Securities and Investments Commission, “Borrowing to invest,” 2024. https://moneysmart.gov.au/borrowing-and-credit/borrowing-to-invest
- Reserve Bank of Australia, “Statistical Tables – Household Finances,” 2025. https://www.rba.gov.au/statistics/tables/
- Commonwealth Bank of Australia, “Home loan borrowing power calculator,” 2025. https://www.commbank.com.au/digital/home-buying/calculator/home-loan-borrowing-power-calculator
- Property Investment Professionals of Australia, “Using equity to invest,” 2024. https://www.pipa.asn.au/using-equity-to-invest