When to Use Equity for Your Next Investment Property

How Mulgrave property investors structure borrowing, leverage equity and manage deposit requirements when building a rental portfolio across Victoria

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Understanding Investment Loan Structures in Mulgrave

Property investors in Mulgrave typically access investment loan products by leveraging equity from an existing property or providing a cash deposit between 10 and 20 per cent of the purchase price. The loan-to-value ratio determines whether Lenders Mortgage Insurance applies, which affects upfront costs and ongoing borrowing capacity. Investors also need to cover stamp duty, building and pest inspections, conveyancing and body corporate records fees where relevant.

Consider an investor who owns a property in Mulgrave's established residential zone near Wellington Road and has paid down the principal over several years. The property is valued at around the suburb's median for a three-bedroom home. With 80 per cent of that value already secured by the existing loan, the remaining 20 per cent represents available equity. That equity can be used as a deposit for a second property, avoiding the need to save a separate cash sum. The lender will assess serviceability based on both the existing loan and the proposed new borrowing, including rental income from the investment property and applying a serviceability buffer of at least 3.0 percentage points above the loan product rate.

The key difference between using equity and providing a cash deposit is that equity release increases total debt across the portfolio. Rental income from both properties needs to cover interest costs, holding expenses and vacancy periods. Most lenders apply a rental income shading factor, meaning they assess only 80 per cent of the expected rent when calculating serviceability. Interest-only repayments are commonly used on investment loans to manage cash flow, but they do not reduce the principal balance during the interest-only period.

Variable Rate or Fixed Rate for Property Investment

Investment loan interest rates are generally higher than owner-occupier rates at the same LVR. Investors choose between variable and fixed rate products based on their cash flow requirements and risk tolerance. A variable rate allows access to offset accounts, which can reduce interest costs by offsetting the loan balance with savings held in the linked account. A fixed rate provides certainty over repayments for a set term, typically between one and five years, but does not allow offset and may involve break costs if the loan is repaid or refinanced before the fixed term ends.

In Mulgrave, investors purchasing properties near Monash University's Clayton campus or in the family-oriented streets around Waverley Gardens often choose variable rates to retain flexibility as their portfolio grows. Rental income in these areas is supported by proximity to the university, the hospital precinct and the Monash Freeway, which connects to the CBD and eastern employment hubs. A variable rate allows the investor to make additional repayments or refinance without penalty if they acquire another property or if rates fall.

Some investors split their loan between variable and fixed portions to balance flexibility with certainty. This approach allows partial access to an offset account on the variable portion while locking in a portion of the rate. The split does not need to be equal and can be adjusted at refinance.

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How Lenders Assess Rental Income and Serviceability

Lenders assess investment loan applications by calculating the borrower's ability to service both the proposed loan and any existing debt. Rental income is included in the assessment but is typically shaded to 80 per cent of the market rent or lease amount. The lender also deducts ongoing holding costs such as council rates, insurance, property management fees and an allowance for maintenance and vacancy. The borrower's other income, including salary, is assessed alongside these figures.

Debt-to-income limits apply from February of this year. Each lender may lend up to 20 per cent of new investor loans to borrowers with a total DTI ratio of six times or greater. A borrower earning a combined household income and already holding debt on an existing property may find their borrowing capacity constrained by this limit, even if their rental income and salary are sufficient to meet the serviceability buffer.

An investor looking to purchase a second property in Mulgrave while retaining their existing home as a rental might find that the combined loan amounts push their DTI above six. In that scenario, reducing other debt, increasing the deposit or adding rental income from a lease agreement signed before application can improve the assessment outcome. Borrowers should also ensure their tax returns reflect rental income accurately, as lenders rely on tax assessments and rental statements when verifying income.

When Equity Release Makes Sense for Portfolio Growth

Equity release works when the value of an existing property has increased or the loan balance has decreased enough to provide accessible equity without exceeding an 80 per cent LVR on the original security. Investors who purchased in Mulgrave several years ago and have benefited from capital growth in the suburb's residential zones may have significant equity available. Accessing that equity avoids the need to save a separate cash deposit, which accelerates the timeline for acquiring a second or third property.

The downside is that releasing equity increases the loan balance on the existing property. If that property is an owner-occupied home, the additional borrowing is not deductible because the funds are used for investment purposes rather than the home itself. Interest on the new investment loan is deductible, but interest on the equity release portion secured against the home is also deductible provided the funds are used to acquire the investment property. Borrowers should confirm the structure with a tax adviser before proceeding, as incorrect allocation can affect deductions.

Investors in Mulgrave who hold properties near Springvale Road or in the residential area north of Police Road often release equity to purchase additional properties in surrounding suburbs where rental yields and capital growth prospects differ. Investment loans structured with separate loan accounts for each property allow the investor to track deductions and manage cash flow independently for each asset. Some lenders also offer equity lines of credit, which provide flexibility to draw funds as needed rather than releasing a lump sum upfront.

Interest-Only Repayments and Tax Deductions

Interest-only repayments allow investors to minimise monthly outgoings during the investment phase. The loan balance does not reduce, but the lower repayment amount can improve cash flow, particularly where rental income does not fully cover interest and holding costs. Interest-only periods typically last up to five years, after which the loan reverts to principal and interest unless the borrower applies to extend the interest-only term or refinances.

Interest on borrowings used to acquire or hold a rental property is deductible against assessable income, including salary and wages, for properties held as at 12 May this year. Properties acquired after that date are subject to different rules depending on whether the property is an eligible new build. For established properties purchased after 12 May this year, losses can only be offset against income from other residential properties from the 2027-28 income year onward. Excess losses can be carried forward. The change does not affect properties already held or those under contract before that date, and it does not affect new builds.

Mulgrave investors purchasing established rental properties after the announcement should model cash flow on the basis that negative gearing may be quarantined from other income. This affects the after-tax cost of holding the property and may change the preferred loan structure. Interest-only repayments remain available under the new rules, but the tax treatment of losses is the key variable. Investors should obtain advice specific to their circumstances before committing to a purchase.

Refinancing to Access Rate Discounts and Loan Features

Investors holding investment loans for several years may benefit from refinancing to access lower rates or improved loan features. Lenders regularly adjust their rate discounts and product offerings, and an investor who has not reviewed their loan since taking it out may be paying a higher rate than is currently available. Refinancing can also consolidate multiple loans, release additional equity or switch from a fixed rate to a variable rate once the fixed term ends.

The refinancing process involves a new serviceability assessment, which takes into account current income, existing debt and rental income. Investors with multiple properties may face tighter serviceability as their portfolio grows, particularly if debt-to-income limits apply. However, borrowers who have reduced other debt, increased their income or benefited from rental growth may find they can access better terms than when they first borrowed.

Costs to consider when refinancing include discharge fees on the existing loan, application fees on the new loan, valuation fees and legal costs. Some lenders offer refinance incentives that offset these costs, but the primary benefit is typically the rate reduction over the life of the loan. Investors should compare the total cost of refinancing against the projected interest saving to confirm the outcome is worthwhile. A loan health check can identify whether refinancing is likely to deliver a material benefit based on current circumstances.

Call one of our team or book an appointment at a time that works for you to discuss your investment loan structure, equity position and next steps for building your property portfolio in Mulgrave and across Victoria.

Frequently Asked Questions

Can I use equity from my Mulgrave home to buy an investment property?

You can use equity from your Mulgrave home as a deposit for an investment property if the combined borrowing does not exceed 80 per cent of the property's value. Lenders assess serviceability based on both loans and apply rental income shading when calculating your capacity.

Is interest on an investment loan tax deductible?

Interest on borrowings used to acquire or hold a rental property is deductible against assessable income. For properties held as at 12 May this year, losses remain fully deductible. For established properties acquired after that date, losses can only be offset against residential property income from the 2027-28 income year.

What is the difference between variable and fixed rates on investment loans?

Variable rates allow access to offset accounts and flexibility to make extra repayments or refinance without penalty. Fixed rates provide certainty over repayments for a set term but do not allow offset and may involve break costs if repaid early.

How do lenders assess rental income on an investment loan?

Lenders typically assess 80 per cent of the expected rental income and deduct holding costs such as council rates, insurance and property management fees. They also apply a serviceability buffer of at least 3.0 percentage points above the loan product rate.

When should I consider refinancing my investment loan?

Refinancing makes sense when you can access a lower rate, release additional equity or improve loan features such as offset or redraw. Compare the total cost of refinancing against the projected interest saving to confirm the benefit.


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Book a chat with a Mortgage Broker at Law Home Loans today.