Smart Ways to Approach Investment Loan Approval

Serviceability determines how much you can borrow

Lenders assess your ability to repay an investment loan by calculating serviceability, which includes your current income, existing debts, living expenses, and the rental income the property will generate. They stress test your application at a higher interest rate than the actual rate you will pay, usually around 3% above the product rate, and apply a discount to the rental income, typically shading it by 20% to account for vacancy periods and maintenance costs.

Consider a buyer purchasing a two-bedroom apartment in Footscray generating $480 per week in rent. The lender will assess serviceability using $384 per week instead of the full amount, and will calculate repayments at a rate higher than what the investor actually pays. If the buyer earns $95,000 annually and has a $15,000 car loan, the stress test might allow borrowing around $450,000 depending on living expenses and the lender's policy. The same buyer without the car loan could access closer to $500,000, showing how existing debts directly reduce your borrowing capacity for investment purposes.

Deposit size affects both approval and ongoing costs

Most lenders require a minimum 10% deposit for investment property, but borrowing above 80% of the property value triggers Lenders Mortgage Insurance. LMI protects the lender if you default, and the premium can range from a few thousand dollars to over $30,000 depending on the loan amount and deposit size. A 20% deposit avoids LMI entirely and improves your serviceability because the loan amount is lower.

Investors using equity from an existing property as their deposit still need to meet the 80% threshold across their total lending to avoid LMI. If you own a home valued at $800,000 with a $400,000 mortgage, you have $240,000 in usable equity at 80% loan to value ratio. That equity can fund a deposit on an investment property, but the combined lending across both properties must stay within serviceability limits. Lenders assess the total debt, not just the new loan in isolation.

Rental income is assessed conservatively

Lenders apply a shading rate to rental income, meaning they only count 70% to 80% of the advertised rent when calculating serviceability. A property in Brunswick listed at $550 per week will be assessed at around $440 per week by most lenders. This built-in buffer accounts for vacancy periods, maintenance costs, and potential rent fluctuations. The specific shading percentage varies between lenders, with some applying 20% and others using 25%.

If the property is not yet tenanted at the time of application, lenders require a rental appraisal from a licensed property manager. This appraisal provides an estimated weekly rent based on comparable properties in the area. The lender will then shade that estimate before including it in the serviceability calculation. Overstating rental income on your application will not help, as the lender relies on their own valuation and appraisal process rather than the applicant's projection.

Interest only repayments can improve serviceability

An interest only loan structure reduces your monthly repayment compared to principal and interest, which can help you meet serviceability requirements when rental income is tight. On a $500,000 loan at a variable rate, an interest only repayment might sit around $2,200 per month, while principal and interest could exceed $3,000. The lower repayment gives you more breathing room in the serviceability calculation, particularly if you are holding multiple investment properties or have other debt commitments.

Interest only terms are typically offered for one to five years, after which the loan reverts to principal and interest unless you request an extension. Lenders assess your ability to service the loan at the principal and interest rate even if you select interest only, so the approval is based on the higher repayment figure. The interest only structure affects cash flow, not approval capacity, but it can make the difference when serviceability is marginal. Investors using investment loans to build a portfolio often use interest only to maximise tax deductions and preserve cash flow for additional purchases.

Budget changes affect new purchases from May 2026

If you purchased an established residential investment property after 12 May 2026, changes to negative gearing and capital gains tax will apply from 1 July 2027. Losses from the property can only be offset against rental income or capital gains from residential property, not against wage income. Excess losses carry forward to future years, so deductions are deferred rather than lost, but the immediate tax benefit is reduced.

The 50% capital gains tax discount will be replaced with inflation-based indexation and a minimum 30% tax on gains for properties purchased after Budget night. Investors who buy new builds retain the option to choose between the old 50% discount and the new arrangements, effectively preserving the existing incentive for new construction. If you bought before 12 May 2026, your property is grandfathered under the previous rules. The changes do not apply retrospectively to gains already accrued, only to gains arising after 1 July 2027.

Lender policy varies on portfolio size and property type

Some lenders cap the number of investment properties they will finance for a single borrower, while others assess each application individually without a hard limit. A buyer with three existing investment properties may find certain lenders decline a fourth application regardless of serviceability, while other lenders continue lending provided the numbers support it. Policy also varies on property type, with some lenders applying higher interest rates or lower loan to value ratios for apartments in buildings with more than three levels, or for properties in regional areas.

Strata titled properties require lenders to review the body corporate records, including the sinking fund balance and any special levies planned or in progress. A building with a low sinking fund or upcoming major works can trigger a decline or a reduced loan amount. Inner Melbourne suburbs like Southbank and Docklands have a high concentration of apartment stock, and lenders familiar with these markets typically have established policies on which buildings and postcodes they will finance. Working with a broker who understands lender appetite for specific property types reduces the risk of a declined application after you have committed to a purchase.

Documentation requirements are higher for investment applications

Lenders require more detailed documentation for investment loans than for owner-occupied purchases. You will need to provide payslips, tax returns, bank statements, and a rental appraisal or lease agreement if the property is tenanted. Self-employed applicants need two years of financial statements and tax returns, plus a letter from an accountant confirming ongoing income. If you are using equity from an existing property, the lender will require a valuation to confirm the current market value before calculating how much you can borrow.

Applications that rely on rental income from multiple properties need to demonstrate consistent tenancy and cash flow across the portfolio. Lenders will request lease agreements and bank statements showing rent received, and will assess whether the rental income has been stable or fluctuating. A property with frequent vacancy or rent arrears will raise questions during the assessment. Preparation before lodging the application reduces delays and improves the likelihood of a smooth approval process. A loan health check can identify issues before you apply, particularly if your financial position has changed since your last borrowing.

Call one of our team or book an appointment at a time that works for you

Distinct Financial works with Melbourne investors to structure applications that meet lender requirements and support long-term portfolio growth. If you are considering a purchase or want to understand how much you can borrow, call our team or book an appointment to review your position and access investment loan options from lenders across Australia.

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