Using Equity to Buy an Investment Property: Broker Steps

Using equity to buy an investment property means borrowing against an existing property to fund the deposit and purchase costs, then arranging the purchase loan. Your client must be able to repay both loans, and each drawing needs a clear purpose and security record.

For a broker, the sequence is to calculate usable equity, arrange the deposit funds, choose the securities, create separate splits and test total repayments. Start with current loan statements, the client’s income and expense evidence, a lender valuation and a purchase budget. Include the client’s cash reserves and expected rent before choosing how much equity to draw.

Work Out Usable Equity at the Lender’s LVR

Calculate usable equity by applying the lender’s permitted loan-to-value ratio (LVR) to its valuation, then subtracting the existing secured debt. LVR measures the loan against the property’s value. Total equity is the property’s value less debt, so it includes value the lender won’t necessarily let the client borrow.

Use this calculation for an initial limit before servicing and any cash-out cap. Cash-out is extra borrowing released for a stated purpose.

Usable equity = lender valuation multiplied by permitted LVR, less existing secured debt.

In this hypothetical example, a home has a lender valuation of $950,000 and an existing loan balance of $500,000. At an assumed 80% LVR limit, the maximum secured debt is $760,000 and usable equity is $260,000. Total equity is $450,000, leaving a $190,000 difference between total equity and the calculated release limit.

If the hypothetical valuation falls to $900,000, the same 80% limit permits $720,000 of debt and $220,000 of usable equity. That valuation change removes $40,000 from the deposit budget. Use the lender’s value when you calculate LVR, even when an agent’s estimate is higher.

As at October 2026, CommBank’s equity explanation illustrates usable equity at 80% of value less the loan balance. It also says income, expenses and existing debt affect access. National Australia Bank (NAB) uses the same usual 80% calculation as at October 2026.

Treat those calculations as starting points. A lender’s purchase LVR doesn’t automatically apply to an equity release. Above 80% LVR, lenders mortgage insurance (LMI) or another lender charge can apply, subject to product rules and any waiver.

A separate dollar cap can reduce the release even when the LVR calculation leaves room. Westpac’s 17 August 2026 broker booklet allows requests up to $100,000 for investment, personal or renovation purposes on mortgage-insured loans. That is a condition for that category of Westpac loan, not a market-wide release limit.

Record the calculated ceiling separately from the amount the client needs. Drawing the whole hypothetical $260,000 increases debt and repayments even if the purchase needs less. Set a cash reserve for vacancy, repairs and household emergencies before selecting the release amount.

For other release methods and their evidence requirements, use the equity release home loan guide.

Fund the Deposit and Purchase Costs From Equity

Use a new loan split against the existing home for the investment deposit and costs, with a purchase loan secured by the investment property. A split is a separate loan account within the lending arrangement. It gives the deposit borrowing its own transaction record.

This hypothetical purchase continues the $950,000 home valuation and $500,000 existing loan example. Assume a $700,000 investment purchase with an equal lender valuation, a 20% contribution and $35,000 of purchase costs. The cost allowance is fictional, so replace it with the actual state stamp duty and written estimates.

Hypothetical funding item	Amount	Funding source
Investment property deposit	$140,000	New equity split against the home
Stamp duty and other purchase costs	$35,000	Same dedicated equity split
Balance of purchase price	$560,000	Loan against the investment property
Total new borrowing	$735,000	$175,000 equity split plus $560,000 purchase loan

The hypothetical home-secured debt becomes $675,000, or about 71.1% LVR. The purchase loan is 80% LVR. Both sit within the assumed 80% limit.

The client still borrows the full purchase price and cost allowance.

Your cost schedule must include legal fees, inspections and settlement charges as well as stamp duty. Add any applicable LMI premium or other lender charge. If the lender capitalises a charge into the loan, include it in the relevant LVR calculation under that lender’s rules.

Combine Equity and Cash Savings

Cash savings reduce the borrowing needed for the same purchase, while retaining savings gives the client more cash for unexpected costs. Compare those outcomes with the client before allocating funds.

If this hypothetical client contributes $40,000 cash, the equity split falls from $175,000 to $135,000. Home-secured debt becomes $635,000, or about 66.8% LVR, while the $560,000 purchase loan remains at 80%. The lower equity draw reduces debt but consumes $40,000 of the client’s cash reserve.

Putting extra cash into the purchase deposit instead lowers the purchase LVR. That can change an LMI outcome when the original purchase loan exceeds the lender’s threshold. Identify which loan the cash reduces before claiming a saving.

Equity is borrowed deposit money. Where the selected lender requires genuine savings, establish whether released equity satisfies its contribution rules or whether separate savings evidence is required. Don’t describe a fresh equity draw as savings the client accumulated.

Arrange the Funds Before the Deposit Is Due

Approve the equity release and establish when the client can draw it before exchange, when the purchase contract becomes binding. Approval alone doesn’t put the deposit in the client’s account. Any controlled payment or outstanding loan condition must fit the deposit date.

1. Prepare a funds-to-complete schedule from the purchase price, costs and proposed loans.
2. Apply for the equity split with its investment purpose and supporting purchase evidence.
3. Confirm the approval conditions and the release date with the lender.
4. Have the solicitor or conveyancer confirm the contract’s deposit date and finance conditions before the client signs.
5. Match available deposit funds to the amount due, then reconcile the remaining funds for settlement.

If equity funds arrive only at settlement, they can’t pay an earlier contract deposit. Resolve that timing through available cash or an agreed contract arrangement before the client commits.

Separate Security or Cross-Collateralised Loans

A standalone structure assigns each property its own secured debt, while cross-collateralisation gives a lender both properties as security for some or all of the loans. A separate loan account doesn’t prove separate security. The mortgage and loan documents determine which debts each property secures.

For the hypothetical purchase, the standalone request is home security for the existing $500,000 loan and $175,000 equity split. The investment property secures only the $560,000 purchase loan. These can be separate lending arrangements even when the broker requests both from one lender, subject to that lender’s approved security terms.

Decision	Standalone security	Cross-collateralised security
Sell the investment property	Seek release against the debt it secures	Lender can assess the remaining security and require debt reduction
Refinance one loan	Assess the relevant property and secured loans	Separating the property can require reassessment of the wider structure
Property values change	Revaluation affects lending against that security	Changes to either value can affect the combined security position
Receive surplus sale proceeds	Release terms decide the payout and surplus	Lender can require proceeds to reduce other secured debt before releasing security

Standalone security reduces the number of property links to manage during a later sale or refinance. It doesn’t remove guarantees, default terms or other rights in the contracts. Explain those terms before treating sale proceeds as freely available cash.

A lender can require additional security when the requested debt exceeds what one property supports under its policy. Crossing might also be part of a specific approval condition or guarantee arrangement. It doesn’t fix a client’s inability to meet repayments.

Before accepting a crossed structure, test whether a smaller release, more cash or another lender can support separate securities. Submit the same income and purchase facts with the alternative security plan. Compare the actual approval conditions, then retain the reason for the client’s chosen structure.

Ask for the loan-to-security schedule and reconcile it against the mortgage documents before signing. If both properties secure the purchase loan, the approved arrangement is crossed regardless of the account names. The cross-collateralisation guide explains later release and refinance decisions.

Split the Loan So the Interest Can Be Traced

Put the investment deposit borrowing in its own split so the client can trace each payment to its use. The Australian Taxation Office (ATO) explains that interest treatment follows how borrowed money is used. The property securing the loan doesn’t by itself decide deductibility.

The ATO’s rental interest guidance distinguishes rental borrowings from private borrowings. When one loan funds both, interest needs apportionment. Repayments on a mixed-purpose loan are apportioned across its purposes, so paying in cash doesn’t simply clear the private portion.

For the hypothetical $175,000 split, retain each drawing, destination and invoice or settlement record. Pay the investment deposit and purchase costs through a documented route. Leave private spending out of that split.

Keep personal savings in a separate home-loan offset account where available. Depositing savings into the investment loan reduces its debt, and a later redraw creates a new borrowing use to trace. A holiday payment from that redraw introduces a private purpose.

Using equity in an investment property to buy a home for the client’s own use reverses the borrowing purpose. The ATO says the private-home borrowing doesn’t become deductible merely because a rental property secures it. Keep that new private borrowing separate too.

A clean split supports records, but it doesn’t establish the client’s deduction. Send the proposed ownership and drawing plan to their tax adviser before funds move. The broker records the lending structure, while the adviser assesses tax treatment.

Keep debt recycling separate from this purchase task. Creating a deposit split doesn’t itself convert the original private home debt into investment debt.

Test Servicing on Both Loans

Test the existing home loan, the equity split and the investment purchase loan together under the lender’s servicing rules. Serviceability is the lender’s assessment of whether income can meet expenses and debt repayments. Available equity can’t compensate for a servicing shortfall.

The Australian Prudential Regulation Authority (APRA) retains a minimum mortgage serviceability buffer of 3 percentage points above the loan rate. Its 28 May 2026 policy update confirms that setting, checked on 3 October 2026. Use the selected lender’s assessment rate, including any higher floor, for the actual application.

The following repayment figures are hypothetical. Assume a 6% interest rate, a 9% assessment rate and monthly principal-and-interest repayments, with no fees or offset balance.

Hypothetical loan	Balance	Remaining term	Monthly payment at 6%	Monthly payment at 9%
Existing home loan	$500,000	25 years	About $3,222	About $4,196
Investment deposit split	$175,000	30 years	About $1,049	About $1,408
Investment purchase loan	$560,000	30 years	About $3,357	About $4,506
Total	$1,235,000	Different terms above	About $7,628	About $10,110

These payments illustrate the rate and term effect. They aren’t a lender borrowing-capacity result. The actual assessment also includes living expenses, other debts and the lender’s income treatment.

For a hypothetical rent estimate of $650 a week, assumed 80% rental shading gives $520 a week of assessable rent, or about $2,253 a month. That 80% assumption isn’t a rule for every lender. Apply the selected lender’s percentage and expense treatment, with the lease or rental appraisal supporting the starting rent.

Model Interest-Only and Vacancy

Interest-only payments can lower the initial cash repayment while leaving principal outstanding. Lenders can assess repayment over the shorter principal-and-interest period that follows. In the hypothetical purchase loan, five interest-only years leave 25 years to repay the $560,000 balance.

At the assumed 9% rate, the hypothetical payment over 25 years is about $4,699 a month, compared with roughly $4,506 over 30 years. Use the lender’s actual interest-only assessment method for both the deposit split and purchase loan.

Keep the home loan’s remaining term accurate. Extending it can reduce a monthly payment while increasing the years the client carries debt. Credit card limits, personal loans and other commitments also affect the result.

Model the client’s cash budget separately from the lender’s shaded-rent calculation. In a hypothetical eight-week vacancy at $650 weekly rent, gross receipts fall by $5,200 while loan payments continue. Allow for property expenses and repairs, then test higher rates and the end of any interest-only period against retained cash.

For the broader rental evidence and expense assessment, use the investment property loan guide. Bulma’s Policy Advisor quotes the lender wording behind an equity-release policy answer, which you can retain with the file notes.

Before lodging, record the client’s objectives, each split’s purpose and the security schedule. Retain valuation results, the funds-to-complete calculation and the servicing inputs. The file is ready when the approved release can meet the deposit date, settlement funds reconcile and the client can carry both properties’ repayments with the agreed reserve.