How to Use Equity in Your Existing Property to Buy an Investment Home in Australia

Introduction

Australia’s property market has long been a favoured avenue for wealth creation, and many homeowners are sitting on a significant asset: the equity in their own home. Equity is the difference between your property’s current market value and the outstanding balance on your mortgage. As property values rise, so does your equity, and you can tap into this to fund an investment property purchase without needing a large cash deposit. This strategy, often called “equity release” or “using equity as deposit,” can accelerate your investment portfolio while keeping your existing home.

This comprehensive guide walks you through the practical steps of leveraging home equity to buy an investment property in Australia. We’ll cover how to calculate usable equity, lender requirements, the borrowing process, tax considerations, and essential risk management strategies. Whether you’re a first-time investor or looking to expand, understanding how to unlock your property’s equity is a powerful tool.

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


What is Home Equity and How Much Can You Use?

Understanding Equity

Equity is calculated as:

Equity = Current Market Value – Outstanding Loan Balance

For example, if your home is worth $800,000 and you owe $300,000, your equity is $500,000. However, lenders won’t let you borrow against the full amount. They typically require you to maintain a certain buffer, usually 20% of the property’s value, to avoid Lenders Mortgage Insurance (LMI). This is where usable equity comes in.

Calculating Usable Equity

Usable equity is the portion you can borrow against without incurring LMI (if you aim to avoid it). The formula is:

Usable Equity = (Property Value x 80%) – Outstanding Loan

Using the above example:

• 80% of $800,000 = $640,000
• Less outstanding loan: $640,000 – $300,000 = $340,000 usable equity

This $340,000 can potentially be used as a deposit for an investment property. Note that lenders will also assess your ability to service the new debt, not just the equity available.

Factors Affecting Equity Amount

• Property Valuation: Lenders will order a formal valuation. Your estimate may differ from the bank’s valuation, which can affect usable equity.
• Loan-to-Value Ratio (LVR): Most lenders cap cash-out or equity release at 80% LVR without LMI. Some allow up to 90% with LMI, but this adds cost.
• Existing Mortgage Type: Fixed-rate loans may have break costs if you refinance to access equity. A line of credit or loan top-up might be simpler.

Step-by-Step Process to Use Equity for an Investment Property

Step 1: Assess Your Current Financial Position

Before approaching lenders, get a clear picture of:

• Property Value: Research recent sales in your area or get a professional appraisal. Online tools like CoreLogic or Domain can provide estimates, but lenders will rely on their own valuation.
• Outstanding Loan Balance: Check your latest mortgage statement.
• Credit Score: A strong credit history improves your chances. You can obtain a free credit report from agencies like Equifax or illion.
• Income and Expenses: Lenders will scrutinise your serviceability. Prepare pay slips, tax returns, and a budget showing you can handle additional debt.

Step 2: Calculate Your Usable Equity

Use the formula above to estimate. Remember, the usable equity must cover the deposit and purchase costs (stamp duty, legal fees, etc.). For an investment property worth $600,000, you’d typically need a 20% deposit ($120,000) plus costs of around 5% ($30,000), totalling $150,000. If your usable equity is $200,000, you have a buffer.

Step 3: Understand Lender Requirements and Loan Structures

Lenders will evaluate:

• Serviceability: Your total income (including rental income from the new property) must cover existing debts and the new loan. Lenders apply an assessment rate (usually 3% above the actual rate) and factor in a percentage of rental income (often 75–80%).
• LVR Limits: For investment properties, maximum LVR is typically 90% (with LMI) or 80% (without LMI). Using equity as deposit means your overall LVR across both properties is considered.
• Cross-collateralisation: Some lenders may require you to cross-securitise both properties, linking them as security for the loans. This can limit flexibility; many investors prefer standalone loans to isolate risk. Discuss with a mortgage broker.

Common loan structures for equity release:

• Line of Credit (LOC): Secured against your home, you draw funds as needed. Only interest is charged on the drawn amount.
• Loan Top-Up: Increase your existing home loan to access equity, then redraw the extra funds.
• Separate Investment Loan: Refinance your home loan to a new lender, taking out a separate loan for the investment property. This keeps finances clean for tax purposes.

Step 4: Get a Property Valuation

The lender will arrange a valuation. You can sometimes challenge a low valuation with supporting evidence. Be aware that valuations can be conservative, especially in a cooling market.

Step 5: Apply for Pre-approval

With your financials in order, apply for pre-approval. This gives you a budget to shop for an investment property. Pre-approval is usually valid for 3–6 months.

Step 6: Find and Purchase the Investment Property

Once pre-approved, you can make an offer. Ensure the property’s rental income stacks up against the loan repayments. After purchase, the equity funds are drawn to complete the settlement.

Lender Requirements and Eligibility Criteria

Lenders have tightened criteria in recent years. Here’s what they typically look for:

Note: Requirements vary between lenders. It’s advisable to consult a mortgage broker who can match you with a suitable lender.

Tax Considerations and Structuring Your Investment

Interest Deductibility

One of the key benefits of using equity for investment is that the interest on the borrowed funds may be tax-deductible if the funds are used for income-producing purposes. However, it’s not the security that determines deductibility but the purpose of the loan. If you redraw equity from your home loan and use it for the investment deposit, that portion of interest becomes deductible. Keep meticulous records and consider setting up a separate loan split to avoid contamination.

Structuring Ownership

• Individual vs. Joint Names: If you have a partner, consider who should hold the investment property for tax efficiency. The higher-income earner might benefit more from negative gearing.
• Trusts: Some investors use discretionary trusts for asset protection and income distribution, but this can affect land tax thresholds and borrowing capacity.

Capital Gains Tax (CGT)

When you eventually sell the investment property, CGT applies. Holding the property for more than 12 months entitles you to a 50% discount on the capital gain if owned by an individual or trust (not companies).

Depreciation

Investment properties can generate significant tax deductions through depreciation on the building and fixtures. Obtain a tax depreciation schedule from a quantity surveyor.

Seek advice from a qualified tax accountant to optimise your structure.

Risk Management and Pitfalls to Avoid

Leveraging equity magnifies both gains and losses. Here are key risks and how to mitigate them:

1. Over-Leveraging

Borrowing too much can strain your finances if interest rates rise or rental income drops. Buffer: Ensure you have at least 3–6 months of loan repayments in an offset account or savings.

2. Property Market Downturn

Falling property values can reduce your equity, potentially putting you in negative equity. Mitigation: Invest in high-growth areas with strong fundamentals; avoid speculative markets.

3. Interest Rate Rises

As of 2024, interest rates are relatively high compared to recent years. Stress-test your budget at rates 2–3% above current levels.

4. Rental Vacancies and Arrears

Investment properties can have periods without tenants. Landlord insurance can cover lost rent and damages.

5. Cross-Collateralisation Traps

If both properties are cross-securitised, selling one can be complicated. The lender may require a revaluation of the remaining security and could demand a loan reduction. Solution: Avoid cross-collateralisation if possible; use separate loans.

6. Tax Mistakes

Mixing personal and investment debt can jeopardise interest deductibility. Always use separate loan accounts. The Australian Taxation Office (ATO) scrutinises apportionment, so keep clear records.

Case Study: Using Equity to Buy an Investment Property

Let’s walk through a realistic scenario.

Homeowner Profile:

• Existing home value: $900,000
• Outstanding home loan: $400,000
• Household income: $180,000 p.a.
• No other debts

Step 1: Calculate Usable Equity 80% of $900,000 = $720,000 Less loan: $720,000 – $400,000 = $320,000 usable equity

Step 2: Investment Property Target

• Purchase price: $650,000
• Deposit (20%): $130,000
• Costs (stamp duty, legal): ~$30,000
• Total funds needed: $160,000

Step 3: Loan Structure

• Refinance home loan to $560,000 (release $160,000 equity). New home loan LVR: $560,000/$900,000 = 62.2% (well under 80%).
• Take out a separate investment loan for $520,000 (80% LVR on investment property).
• Total borrowing: $560,000 (home) + $520,000 (investment) = $1,080,000.

Step 4: Serviceability Check

• Monthly repayments on $1,080,000 at 6.5% p.a. = approx. $6,800/month.
• Gross rental income: $650/week = ~$2,817/month; lender uses 75% = $2,113.
• Net monthly cost: $6,800 – $2,113 = $4,687.
• Household monthly income: $15,000; expenses (including living costs) $6,000.
• Surplus: $15,000 – ($6,000 + $4,687) = $4,313. This meets serviceability buffers.

Outcome: The homeowner can purchase the investment property without using cash savings, and the rental income partially offsets the loan cost. Tax deductions on interest and depreciation may further improve cash flow.

Note: This is a simplified example. Actual lender calculations will include assessment rates and detailed living expenses.

Frequently Asked Questions (FAQ)

Can I use 100% of my equity to buy an investment property?

No. Lenders typically require you to keep at least a 20% equity buffer in your existing property to avoid LMI. You can only borrow against the “usable equity” above that 80% threshold. Some lenders may allow higher LVRs with LMI, but this increases costs and risk.

Do I need to pay tax on the equity I release?

No. Equity release is not income; it’s a loan. You don’t pay tax on borrowed money. However, the interest on that loan may be tax-deductible if the funds are used for investment purposes. Always consult a tax professional.

What if my property value drops after I’ve released equity?

This is a risk. If property values fall, your LVR increases, and you may face negative equity. Lenders could require you to reduce your loan, but this is rare if you keep up repayments. Mitigate by maintaining a healthy buffer and not over-leveraging.

Is it better to use a line of credit or a loan top-up?

It depends on your needs. A line of credit offers flexibility—you only draw what you need and pay interest on the drawn amount. A loan top-up is simpler but may mix personal and investment debt, complicating tax deductibility. Many investors prefer a separate loan split for clarity.

Can I use equity if I’m a pensioner or on a low income?

Serviceability is key. Even if you have substantial equity, lenders will assess your ability to repay. If your income is low, you may not qualify for a large loan. Some lenders offer “equity release” products for seniors, but these are typically for personal use, not investment.

References

1. Australian Securities and Investments Commission (ASIC) – Mortgage borrowing: https://moneysmart.gov.au/home-loans
2. Australian Taxation Office – Rental properties: https://www.ato.gov.au/individuals/investments-and-assets/rental-properties/
3. Australian Prudential Regulation Authority (APRA) – Residential mortgage lending: https://www.apra.gov.au/residential-mortgage-lending
4. Reserve Bank of Australia – Housing market: https://www.rba.gov.au/financial-stability/housing-market/

This article was last updated in April 2025. Market conditions and regulations may have changed. Always verify with current sources.