Top Strategies to Use Home Equity for Investment Property

Using equity in your home to fund an investment property lets you enter the market without saving a separate deposit from scratch.

For business owners who have built equity in a primary residence or existing investment, releasing that value through a refinance or top-up can provide the deposit and purchase costs for a second property. The strategy works by using the unrealised gain in one property as security for another loan, allowing you to expand your portfolio while keeping your original home untouched. Timing, loan structure and serviceability all determine whether this approach suits your circumstances.

How Equity Release Works for Property Investment

Equity is the difference between what your property is worth and what you owe on it. Lenders will typically allow you to borrow against up to 80 per cent of a property's value without paying Lenders Mortgage Insurance, though some will lend higher with LMI included. If your home is valued at $900,000 and you owe $400,000, you have $500,000 in equity. At an 80 per cent loan-to-value ratio, the lender would allow total borrowing of $720,000 against that property, leaving $320,000 available to draw down after your existing mortgage is accounted for.

That available amount becomes your deposit for the next purchase. A business owner in Caringbah with $320,000 accessible could use $280,000 as a 20 per cent deposit on a property valued at the median for a nearby suburb, with the remaining funds covering stamp duty, legals and other settlement costs. The original home remains your primary residence, and the new loan is structured as an investment loan with its own interest rate and repayment terms.

Lenders assess both properties when calculating serviceability. Your income needs to cover repayments on the increased home loan plus the full repayment on the investment loan, even if you elect an interest-only period. Rental income from the investment property is included, though most lenders apply a discount of 20 per cent to account for vacancy and management costs.

Structuring the Loan to Separate Debt

Keeping the debt for your home separate from the debt for your investment property matters for tax purposes. Interest on borrowings used to purchase or hold an income-producing asset is deductible. Interest on your home loan is not.

The cleanest structure is a split loan facility. Your existing home loan remains in one account, and the funds drawn to purchase the investment sit in a second account under the same facility. The interest charged on that second account is fully deductible because the funds were used solely for investment purposes. Mixing the two, or redrawing investment funds from your home loan without separating them, creates problems at tax time because the Australian Taxation Office requires a clear link between the borrowing and the income-producing use.

Consider a business owner who refinances to release $300,000 in equity. That $300,000 is placed in a new split account and transferred directly to the settlement agent for the investment purchase. The interest on the $300,000 is claimed as a deduction against rental income. The interest on the remaining home loan balance is private and non-deductible. If that same borrower had instead drawn the $300,000 into their existing home loan offset and then paid for the investment from the offset, the deduction becomes harder to substantiate.

Interest-only repayments are common on investment loans because they lower the monthly cost and maximise the deductible interest component. Principal-and-interest repayments reduce the loan balance over time, which shrinks the deduction. Most lenders offer interest-only terms of up to five years on investment lending, after which the loan reverts to principal and interest unless you request an extension.

Debt-to-Income Caps and Serviceability from February 2026

From 1 February 2026, Australian Prudential Regulation Authority rules limit the number of high debt-to-income loans that banks can write. Lenders may approve no more than 20 per cent of new investor loans at a debt-to-income ratio of six times gross income or higher. The cap applies separately to investment lending and owner-occupied lending.

For a business owner earning $180,000 annually, total debt across all mortgages cannot exceed $1,080,000 if the lender has already reached its 20 per cent threshold. If you are below the threshold, the lender may still approve the loan, but competition for those higher-ratio approvals is tighter. The cap does not apply to construction finance for new builds, which may present an alternative if your borrowing capacity is constrained.

Serviceability is tested at the loan's actual interest rate plus a three percentage point buffer, so a variable rate investment loan priced at 6.5 per cent is assessed at 9.5 per cent. Lenders also apply a discount to rental income, usually 20 per cent, meaning $600 per week in rent is counted as $480 for serviceability purposes. If your business income fluctuates, the lender will average the last two years of tax returns and may apply an additional discount depending on the industry and the consistency of your earnings.

Business owners with complex income structures often need more documentation than salaried employees. Recent business financials, tax returns, a letter from your accountant and, in some cases, profit-and-loss statements for the current year are standard. The lender wants to confirm that your income is stable enough to cover both the increased home loan and the new investment loan.

Legislative Changes to Negative Gearing from July 2027

From 1 July 2027, negative gearing rules change for residential investment properties acquired after 7:30pm on 12 May 2026. Rental losses on those properties can no longer be offset against salary or business income. Losses are quarantined and can only be used against other residential rental income or carried forward to offset future rental income or capital gains from residential property.

Properties held before that date and time, including those under contract but not yet settled, remain under the existing rules. If you are considering a purchase using equity, the date of contract exchange determines which set of rules apply, not the settlement date.

New residential dwellings built on previously vacant land or that increase the total number of dwellings on a site remain eligible for negative gearing under the old rules, even if purchased after the threshold date. A knock-down rebuild that does not increase the number of dwellings does not qualify, nor does a substantial renovation. A new build that has been occupied for more than 12 months before you purchase it loses access to negative gearing for you as a subsequent buyer.

For business owners in the Sutherland Shire, this may influence the choice between established properties in Cronulla or Caringbah and newer developments in areas where supply is increasing. The quarantining of losses does not affect positively geared properties or those that break even, but it does change the after-tax cost of holding a negatively geared asset during the early years of ownership.

Variable Versus Fixed Rates for Investment Lending

Most lenders price investment loans at a margin above their equivalent owner-occupied products. The difference is typically between 0.30 and 0.70 percentage points, depending on the lender and the loan-to-value ratio. Variable rates allow you to make extra repayments and access offset accounts, which can reduce interest costs if you have surplus cash flow. Fixed rates lock in your repayment and protect against rate increases, but they do not usually permit extra repayments beyond a small annual threshold and come with break costs if you refinance or sell before the fixed term ends.

Investment loans structured with a variable rate and an offset account let you park business income or other funds in the offset and reduce the interest charged without reducing the deductible loan balance. If you fix the rate, the loan balance stays constant but you lose the flexibility to offset or pay down early without penalty.

Some borrowers split the investment loan between variable and fixed portions. Half the loan might be fixed for three years at a known rate, and the other half remains variable with an offset attached. The fixed portion provides certainty, and the variable portion allows you to adapt if your cash flow improves or you want to pay down debt ahead of schedule. The right structure depends on your risk tolerance, cash flow predictability and whether you expect to sell or refinance in the near term.

Ongoing Costs and Cash Flow Management

Owning an investment property involves more than the loan repayment. Council rates, water rates, strata fees if applicable, landlord insurance, property management fees, repairs and vacancy periods all reduce net rental income. Business owners often underestimate the impact of these costs when they calculate expected cash flow.

A property that generates $600 per week in rent, or $31,200 per year, might incur $3,500 in strata fees, $2,000 in council and water, $1,500 in insurance, $2,800 in management fees at 9 per cent, and another $2,000 in maintenance and repairs. Total costs of $11,800 leave $19,400 before loan interest. If the annual interest bill on the investment loan is $24,000, the property runs at a $4,600 loss before depreciation. Under the rules in place now, that loss is deductible. From 1 July 2027, if the property was purchased after 12 May 2026 and is not a qualifying new build, that loss can only offset other rental income or be carried forward.

Depreciation on fixtures, fittings and the building itself can create additional deductions that offset some or all of the cash shortfall. A quantity surveyor prepares a depreciation schedule that details claimable amounts over the life of each asset. Older properties have less depreciable value, while newer apartments and townhouses can deliver significant deductions in the early years.

Cash flow management requires a buffer. A vacancy of four weeks costs one month's rent and resets your income for that quarter. If the tenant causes damage beyond the bond or requests repairs that cannot wait, you need access to funds without relying on credit. Business owners whose income is irregular should plan for these costs separately rather than assuming rental income will always cover them.

When Equity Release Is Not the Right Approach

Using equity to fund an investment works when your income supports the additional debt, the property you are purchasing will hold or grow in value, and you do not need access to that equity for other purposes in the short term. It stops working when serviceability is marginal, the investment property is negatively geared beyond your capacity to absorb losses, or your business requires capital that is now tied up in bricks and mortar.

Business owners sometimes release equity at a time when their business is growing and capital would deliver a higher return if reinvested into operations or equipment. A 7 per cent return on a rental property after costs might look acceptable, but if your business is generating a 20 per cent return on retained earnings, the opportunity cost is significant. Property is a long-term hold, and liquidity is low compared to other asset classes.

If your borrowing is already close to the debt-to-income cap or your loan-to-value ratio will exceed 80 per cent once the equity is released, Lenders Mortgage Insurance will apply. LMI premiums on investment loans are higher than on owner-occupied loans and are calculated on the full amount borrowed above 80 per cent. For a $100,000 LMI premium, you are paying that upfront or capitalising it into the loan, which increases the interest cost over the life of the loan.

Another constraint is the valuation. Lenders use their own valuation, not your estimate or a recent sales appraisal from an agent. If the valuer assesses your home lower than expected, the available equity shrinks and you may not have enough to proceed. Valuations in some parts of the Sutherland Shire have softened in response to higher interest rates and changes in buyer demand, which can affect your borrowing capacity even if you purchased recently at a higher price.

Call one of our team or book an appointment at a time that works for you to talk through your equity position, loan structure and whether an investment loan fits your circumstances and your broader financial plan.

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