If you own a home with equity in Sydney, you may already have the deposit for your first investment property sitting untouched — without needing to save another dollar. Here's how to access it correctly.
80%
Max LVR benchmark
20%
Investment deposit needed
Separate
Loan structures preferred
Tax ✓
Interest may be deductible
What Is Usable Equity?
Equity is the difference between your home's current market value and your outstanding loan balance. But lenders won't let you access all of it — they typically lend up to 80% of your home's value (to avoid LMI on the owner-occupied side) and the usable equity is the remainder.
Usable Equity Formula
Example:
Home Value: $900,000 · Outstanding Loan: $450,000
Usable Equity = ($900,000 × 80%) − $450,000 = $270,000
This $270,000 could fund the deposit on an investment property worth up to $1.08M (at 25% deposit + costs).
How the Structure Works
Using equity to buy an investment property involves two loan transactions:
- Equity loan / line of credit on your home. Your existing lender (or a new lender via refinance) releases the usable equity as a separate loan facility. This becomes your investment deposit and purchase costs fund
- Investment property loan. A separate loan secured against the investment property itself, typically at 80% of the investment property's value
Keeping these as two separate loan facilities — ideally at two different lenders — is critical for tax and strategic reasons. See the section on cross-collateralisation below.
Get Your Structure Right from the Start
A poorly structured equity loan (mixing purposes, cross-collateralising) creates tax problems that are very difficult to unwind later. Getting the structure right at the beginning costs nothing extra — getting it wrong costs significantly more to fix.
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Cross-Collateralisation — What It Is and Why to Avoid It
When you go to your current lender to access equity, they'll often suggest securing both properties under the same loan — this is cross-collateralisation. It's convenient for the bank, but has significant downsides for you:
- Loss of flexibility. If you want to sell one property, your lender gets to review your entire portfolio and may withhold release of funds until their position across both loans is secure
- Refinance complications. Moving one loan means moving both — you can't take the best deal for each property independently
- Tax complexity. Mixed security can blur the deductibility of interest between owner-occupied (not deductible) and investment (deductible) purposes
- Margin call risk. If property values fall, the lender can review the combined security — affecting your home loan as well as the investment
Better structure: Release equity from your home as a standalone equity loan. Use those funds as deposit for the investment property. Then take the investment loan as a completely separate facility — ideally with a different lender. This keeps each property independent and preserves maximum flexibility.
Tax Considerations
The tax treatment of an equity-funded investment purchase is nuanced. The key principles:
- The equity loan interest may be deductible. If the funds drawn from your home equity are used directly to purchase an income-producing investment, the interest on that drawn amount is generally deductible — even though the security is your home
- Purpose matters, not security. The ATO looks at what the money was used for, not what it's secured against. Keep a clear paper trail: equity release → investment account → property purchase
- Don't mix funds. If the equity loan funds are deposited into a personal account that also holds everyday expenses, the deductibility becomes mixed and harder to establish. Use a separate account for investment-related funds
Always confirm your specific deductibility position with your accountant — particularly around how your equity loan is structured and documented.
What Kind of Investment Property to Buy
For Sydney-based investors using equity, several suburbs in the South West Sydney corridor offer strong yields and growth fundamentals at accessible price points:
- Campbelltown / Ingleburn / Leumeah — median house prices under $800K with rental yields in the 3.5–4.5% range and ongoing infrastructure investment
- Liverpool — strong rental demand driven by hospital, university, and transport hub proximity; solid long-term capital growth track record
- Marsden Park / Schofields — growth corridor with new infrastructure and strong owner-occupier demand supporting property values
- Oran Park / Leppington — still relatively affordable for land-to-asset ratio; appeal to family renters seeking good schools and amenities
See our analysis on whether Marsden Park is good for investment property for a detailed breakdown of yields, vacancy rates, and future growth drivers in one of Sydney's fastest-growing corridors.
Frequently Asked Questions
Usable equity = (home value × 80%) minus outstanding loan. For a $600,000 investment property, you'd need approximately $150,000 in usable equity to cover the 20% deposit plus purchase costs (~5%). A broker calculates this precisely based on a current valuation.
Yes — almost always. Mixing investment and owner-occupied borrowings in the same loan creates a mixed-purpose loan that's a tax headache. Best practice: standalone equity loan for the deposit, standalone investment loan for the property itself — ideally at separate lenders.
Cross-collateralisation is using your home as security for both your home loan and your investment loan at the same lender. This reduces flexibility, complicates refinancing, and gives the lender power over both properties. Keeping investment loans standalone at a separate lender is generally better practice.
If equity funds are used directly for income-producing investment, interest on that drawn amount may be deductible even though it's secured against your home. The ATO looks at purpose, not security. Keep a clean paper trail and always confirm with your accountant.
Most lenders will lend up to 80% LVR for investment without LMI. Some go to 90% with LMI. Investment LVR limits can be stricter for certain postcodes (high-density, regional). Established SW Sydney suburbs are generally treated favourably by lenders.
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