Using Equity to Buy Investment Property: Australian Guide (2026)

Using Equity to Buy Investment Property: A Guide for Australian Investors

Using equity to buy investment property is a common way Australian owners fund a deposit without starting again from cash savings.

The strategy can work well, but only if the numbers, loan structure, tax advice, and serviceability test all stack up.

What Is Equity in Your Home?

Equity is the difference between what your home is worth and what you still owe on your mortgage.

In lending terms, equity is the difference a bank uses to decide how much value may be available.

For example, if the value of your home is $800,000 and your existing loan is $400,000, your total equity is $400,000.

How Much Equity Can You Use?

Not all equity in your home is usable equity.

Most lenders cap usable equity at 80% of the property value before Lenders Mortgage Insurance applies.

• Current market value: $800,000
• 80% of property value: $640,000
• Minus what you still owe: $400,000
• Usable equity: $240,000

That $240,000 may be able to fund the deposit and purchase costs for a new property.

Check the estimate with the PropBoss equity calculator before you speak with a lender.

How Much Equity Do You Need to Buy an Investment Property?

Most investors need a 20% deposit plus buying costs.

For a $600,000 investment property, the deposit is $120,000.

Stamp duty, legal fees, inspections, and loan costs may add another $25,000-$40,000.

That means you would need roughly $145,000-$160,000 in useable equity before the deal is comfortable.

How to Use Home Equity to Buy Property

Get Your Existing Property Assessed

Ask your bank, lender, or mortgage broker for a valuation on your existing property.

The bank's market value can be lower than an online estimate, so use the lender number when you calculate borrowing capacity.

Refinance or Set Up a Home Equity Loan

A cash-out refinance replaces your current loan with a larger new mortgage.

A home equity loan or top-up keeps the existing property as security and releases extra funds for investment purposes.

A line of credit gives flexible access, because you pay interest only on the amount you draw.

Keep the investment split separate where possible.

Many investors use a split loan structure so the investment portion is separate from private debt.

That can make tax deductions and interest repayments easier to track.

Before relying on a deduction, get tax advice from a registered tax agent.

This clear record-keeping matters at refinance time and at annual tax time each year.

Apply for the New Loan

The lender will assess income, existing loan commitments, credit history, living expenses, and expected rental income.

This serviceability check decides how much you can borrow and whether the extra mortgage repayments are comfortable.

Avoid cross-collateralisation where possible, because it can give the bank security over both properties.

Equity to Buy a Second Property

Using your equity to buy a second property follows the same process.

If capital growth or renovating increases your current property value, you build equity that may help fund another purchase.

The second property may also generate rental income, which can support cash flow across multiple loans.

Using the Equity in Your Home for Multiple Properties

The constraint is usually serviceability, not just equity.

Even with $500,000 in usable equity, the bank still needs to confirm you can handle repayments if interest rates rise.

Credit card debt, car loan obligations, and higher living expenses can reduce borrowing power.

Pros and Cons of Using Your Equity

Benefits of Equity-Based Property Investment

The main benefit is speed: using your equity to buy can let you invest sooner than saving a full deposit.

You may keep cash savings as a buffer for repairs, vacancies, and ongoing costs.

If the property is negatively geared, interest may be deductible when the borrowed funds are used for investment.

Depreciation deductions, rental income, and long-term capital growth can also support the investment strategy.

Risks and Drawbacks to Be Aware Of

The risk is taking on more debt against your home.

If interest rates rise, repayments across two mortgage accounts can create financial stress.

If property values fall, you can lose equity and have less flexibility to refinance, sell, or buy another property.

There are also tax implications, including capital gains tax when you sell for a profit.

How to Build Equity in Your Home Faster

Make Additional Repayments

Paying more than the minimum reduces principal and can build equity faster.

Consider a Fixed Rate

A fixed rate can make repayments easier to budget during the fixed term.

Renovate for Value

A targeted kitchen, bathroom, or maintenance upgrade can boost the home's value if the market recognises the improvement.

Use an Offset Account

An offset account can reduce interest charges while keeping cash available for emergencies.

Home Loan Specialists and Professional Advice

Talk to home loan specialists, a financial adviser, or a mortgage broker before you commit.

They can compare loan options, explain favourable terms, and test the numbers against your financial situation.

General information is not personal advice, so match the strategy to your financial circumstances before acting.

Frequently Asked Questions

How Much Usable Equity Do I Need?

You usually need enough usable equity for a 20% deposit plus buying costs.

For a $500,000 investment property, that means about $100,000 for the deposit plus $20,000-$35,000 for stamp duty and fees.

Can I Use Equity From One Investment Property to Buy Another?

Yes, if the property has enough market value above the loan balance and your lender approves the new debt.

Many investors use increasing values to build a property portfolio over time.

Is There a Tool That Tracks Equity Automatically?

PropBoss tracks home equity, cash flow, and tax deductions across your properties with bank feeds and live valuations. For a deeper look, see our can I afford an investment property.

Start your free trial or calculate usable equity before your next purchase.