How to Use Equity in Your Current Home to Buy an Investment Property in Australia
Introduction
For many Australian homeowners, the dream of building a property portfolio is closer than they think. If you’ve owned your home for a few years and have seen its value rise, you may be sitting on a significant amount of equity that can be used to purchase an investment property. Leveraging home equity is one of the most common strategies for expanding into real estate investing without needing a large cash deposit. However, it requires careful planning, understanding of loan structures, tax implications, and lender requirements.
This step-by-step guide will walk you through the process of using equity in your current home to buy an investment property in Australia. Whether you’re a first-time investor or looking to grow your portfolio, this article covers everything from calculating usable equity to structuring loans, navigating tax considerations, and meeting lender criteria.
What Is Home Equity and How Does It Work?
Home equity is the difference between the current market value of your property and the outstanding balance on your mortgage. For example, if your home is worth $800,000 and you owe $400,000, your equity is $400,000. However, not all of this equity is accessible for investing. Lenders typically allow you to borrow up to 80% of your property’s value without paying Lenders Mortgage Insurance (LMI), though some may go higher with LMI.
Usable equity is calculated as 80% of your property’s value minus the remaining loan balance. Using the example above:
- 80% of $800,000 = $640,000
- Minus loan balance of $400,000 = $240,000 usable equity.
This $240,000 can be used as a deposit and costs for an investment property. It’s important to note that lenders will assess your ability to service the additional debt, not just the equity available.
Step 1: Calculate Your Usable Equity
Before approaching a lender, you need to understand how much equity you can access. Here’s a simple process:
- Determine your property’s current market value: Get a professional appraisal from a licensed valuer or use recent comparable sales in your area. Online estimates can be a starting point but are not always accurate.
- Check your outstanding loan balance: This is available on your latest mortgage statement or by contacting your lender.
- Calculate 80% of the value: Multiply the market value by 0.8.
- Subtract the loan balance: The result is your usable equity.
Example Table: Usable Equity Calculation
| Property Value | Loan Balance | 80% of Value | Usable Equity |
|---|---|---|---|
| $700,000 | $300,000 | $560,000 | $260,000 |
| $900,000 | $500,000 | $720,000 | $220,000 |
| $1,200,000 | $600,000 | $960,000 | $360,000 |
Keep in mind that lenders may use a lower percentage if you want to avoid LMI, or if the investment property is in a regional area. Always confirm with your lender or mortgage broker.
Step 2: Understand Loan Structuring Options
How you structure your loans is critical for both tax efficiency and risk management. The two most common methods are:
1. Cross-Collateralisation
This involves using your existing home as security for both the original loan and the new investment loan. The lender takes a charge over both properties. While it can be simpler to set up, it has downsides:
- If you sell one property, the lender may require you to refinance the other.
- It can limit flexibility and future borrowing capacity.
2. Stand-Alone Loans with Equity Release
This is often preferred by investors. You refinance your home loan to access equity (a line of credit or loan increase) and use that cash as a deposit for the investment property. The investment property loan is secured only by the investment property itself. This structure:
- Keeps assets separate, reducing risk.
- Allows clearer tax deductions (interest on the equity release used for investment purposes is tax-deductible).
- Provides more flexibility for future transactions.
Important: The Australian Taxation Office (ATO) focuses on the purpose of the loan. If you redraw equity from your home and use it for an investment, the interest on that portion is tax-deductible. However, if you mix personal and investment borrowings, it can complicate deductions. Always seek advice from a tax professional.
Step 3: Check Lender Requirements and Borrowing Capacity
Lenders will assess your application based on several factors:
- Serviceability: Your income minus expenses, including the new investment loan repayments. Lenders add a buffer (usually 3% above the loan rate) to ensure you can handle rate rises.
- Credit history: A clean credit report is essential. Any defaults or late payments can hinder approval.
- Employment stability: Full-time, permanent employment is viewed favorably, but self-employed borrowers can qualify with strong financials.
- Rental income: Lenders typically use only 75-80% of the expected rental income to account for vacancies and expenses.
- Existing debts: Credit cards, personal loans, and other commitments reduce borrowing capacity.
Lenders may also have specific policies for investment properties, such as minimum deposits (often 10-20%), and restrictions on certain postcodes or property types. Working with a mortgage broker who understands investment lending can help you navigate these requirements.
Step 4: Tax Implications of Using Equity
Using equity to invest has significant tax implications. The key principle is that interest on borrowings used for income-producing purposes is tax-deductible. Here’s how it applies:
- Equity release for investment: If you borrow against your home to fund an investment property deposit, the interest on that borrowed amount is deductible. However, you must clearly document the flow of funds.
- Loan splitting: It’s advisable to split your home loan into two portions: one for the original non-deductible debt, and a separate split for the investment-related debt. This makes it easy to calculate deductions and satisfy ATO requirements.
- Negative gearing: If your investment property’s expenses (including interest) exceed its rental income, you can offset the loss against your other income, reducing your taxable income. This is a common strategy in Australia but should be reviewed with a tax advisor.
- Capital Gains Tax (CGT): When you sell the investment property, you’ll be liable for CGT on the profit. Holding the property for more than 12 months entitles you to a 50% discount on the gain if you’re an individual.
For authoritative information, refer to the Australian Taxation Office website: https://www.ato.gov.au/individuals-and-families/investments-and-assets/residential-property
Step 5: The Step-by-Step Process to Purchase
Here’s a practical roadmap to using equity to buy an investment property:
- Assess your financial position: Calculate usable equity, review your credit score, and estimate borrowing capacity. Use online calculators or consult a broker.
- Get a property valuation: Your lender will require a valuation of your existing home to determine equity. Some lenders offer free upfront valuations.
- Choose a loan structure: Decide between cross-collateralisation or stand-alone loans. Seek advice from a mortgage broker or financial advisor.
- Apply for pre-approval: This gives you a clear budget and shows sellers you’re serious. Pre-approval is usually valid for 3-6 months.
- Find the right investment property: Research areas with strong rental demand, capital growth potential, and low vacancy rates. Consider engaging a buyer’s agent.
- Make an offer and sign contracts: Include a “subject to finance” clause to protect yourself.
- Finalise loan approval: Your lender will value the investment property and finalise the loan. You’ll need to provide documents like payslips, tax returns, and rental estimates.
- Settlement: The loan funds are advanced, and you take ownership. Engage a solicitor or conveyancer to handle the legal process.
Step 6: Risks and How to Mitigate Them
Leveraging equity is not without risks. Here are the main ones and how to manage them:
- Market downturn: Property values can fall, eroding equity and potentially leading to negative equity. Mitigation: Invest for the long term, diversify across locations, and avoid over-leveraging.
- Interest rate rises: Higher rates increase repayments and reduce cash flow. Mitigation: Fix part of your loan or ensure you have a buffer. The Reserve Bank of Australia provides updates on monetary policy: https://www.rba.gov.au/monetary-policy/
- Rental vacancies: If your property is vacant, you’ll need to cover the mortgage without rental income. Mitigation: Choose high-demand areas, maintain the property well, and consider landlord insurance.
- Tax changes: Negative gearing and CGT rules can change. Mitigation: Stay informed and maintain flexibility in your investment strategy.
Step 7: Working with Professionals
Building a property portfolio requires a team of experts:
- Mortgage broker: Helps find the right loan structure and lender, often at no cost to you.
- Tax accountant: Advises on deductions, negative gearing, and CGT.
- Financial advisor: Ensures your investment aligns with your overall financial goals.
- Solicitor/conveyancer: Handles contracts and settlement.
- Buyer’s agent: Assists in finding and negotiating the right property.
FAQ
1. How much equity do I need to buy an investment property?
Typically, you need enough equity to cover a 20% deposit plus costs (stamp duty, legal fees). Lenders will lend up to 80% of your home’s value, so your usable equity should at least cover the deposit and costs for the investment property. Some lenders may allow a 10% deposit with LMI, but this increases costs.
2. Can I use equity if I still have a large mortgage?
Yes, as long as you have enough equity to meet the lender’s requirements and can service the additional debt. Lenders assess your overall financial position, not just the equity amount.
3. Is the interest on equity release always tax-deductible?
Only if the funds are used for income-producing purposes, such as buying an investment property. If used for personal expenses, the interest is not deductible. Proper loan structuring and documentation are essential.
4. What if I can’t service the new loan?
Lenders will test your ability to repay at a higher interest rate. If you don’t meet the serviceability criteria, you may need to reduce the loan amount, consider a cheaper property, or improve your income. A broker can help explore options.
5. Should I fix my investment loan interest rate?
It depends on your risk tolerance and market conditions. Fixed rates offer certainty, while variable rates provide flexibility. Many investors split their loan to hedge against rate movements.
References
The following resources provide further information on property investment and taxation in Australia:
- Australian Taxation Office – Property: https://www.ato.gov.au/individuals-and-families/investments-and-assets/residential-property
- Reserve Bank of Australia – Monetary Policy: https://www.rba.gov.au/monetary-policy/
- Australian Securities and Investments Commission – Borrowing to invest: https://moneysmart.gov.au/investing/borrowing-to-invest

Disclaimer: This article is for informational purposes only and does not constitute financial or tax advice. Consult a qualified professional before making investment decisions.