The easiest way to prepare an investment loan application

An investment loan application is assessed on a different footing to an owner-occupier home loan.

Lenders apply higher deposit requirements, different serviceability calculations, and tighter scrutiny on rental income assumptions. The decisions you make before lodging the application, including how you structure repayments, the property type you target, and whether you include offset or redraw facilities, influence both the initial approval and the financial outcome over the life of the loan.

What Lenders Assess Differently for Investment Loans

Lenders assess your ability to service an investment loan at an interest rate at least 3.0 percentage points above the loan product rate. Under APRA's prudential framework, all authorised deposit-taking institutions apply this serviceability buffer to new borrowers. Expected rental income may be included in the serviceability assessment, but lenders typically discount that income by 20 per cent to account for vacancy, maintenance, and body corporate costs. Some lenders apply higher discounts depending on the property type and location.

Consider an investor applying for an $850,000 loan on a two-bedroom unit in Bundoora. At current variable rates, the lender will assess serviceability at a test rate approximately 3.0 percentage points higher. If the property attracts median rent of $530 per week, the lender will credit 80 per cent of that figure, or $424 per week, to the borrower's income. The remaining 20 per cent is treated as a buffer for vacancy and costs. The borrower's other liabilities, including existing mortgages, credit cards, and personal loans, are also factored into the calculation.

Deposit requirements for property investor loans are typically higher than for owner-occupiers. Most lenders require a minimum deposit of 20 per cent to avoid Lenders Mortgage Insurance, though some products allow a deposit as low as 10 per cent with LMI. LMI premiums on investment loans are generally higher than on owner-occupier loans at the same loan-to-value ratio. The premium is calculated on a sliding scale based on the loan amount and LVR, and in some states, stamp duty applies to the LMI premium itself.

How Debt-to-Income Limits Affect Investor Borrowing Capacity

From 1 February 2026, APRA activated a debt-to-income lending limit requiring each authorised deposit-taking institution to limit new investor loans to borrowers with a total DTI ratio of six times or greater to no more than 20 per cent of quarterly investor lending. The limit applies separately to owner-occupier and investor portfolios and applies only to new lending. Existing borrowers are not affected.

The DTI ratio is calculated by dividing total debt by gross annual income. For an investor with a gross household income of $150,000 and total debt of $900,000, the DTI ratio is six. At that threshold, the investor sits at the upper edge of most lenders' serviceability appetite. Lenders apply the DTI limit at portfolio level, meaning an individual application may still be approved if it breaches the six-times threshold, but the lender must manage its total exposure to high-DTI lending within the 20 per cent cap.

In our experience, investors looking to expand their property portfolio often reach DTI constraints before they exhaust their available equity. Releasing equity from an existing property to fund the next purchase increases total debt without increasing income, which pushes the DTI ratio higher. Strategies such as increasing rental income through property upgrades, adding a co-borrower, or refinancing to reduce interest costs can all improve serviceability without requiring additional equity release.

Structuring Repayments: Interest-Only or Principal and Interest

Most investment loan applications include a request for an interest-only repayment period. Interest-only repayments reduce the monthly cash outflow, which can be useful for managing negative gearing or for investors who prefer to direct surplus cash toward other investments or property acquisitions. Lenders typically approve interest-only periods of up to five years, after which the loan reverts to principal and interest repayments.

Under APS 112, a residential investment loan with an interest-only period greater than five years and an LVR above 80 per cent is classified as non-standard, which attracts a higher risk weight for the lender. This classification feeds into the lender's capital requirements and, in turn, influences pricing. For that reason, most lenders set a maximum interest-only period of five years for loans above 80 per cent LVR.

Principal and interest repayments attract a lower risk weight under APS 112, which can result in a lower interest rate for the borrower. The trade-off is higher monthly repayments and reduced negative gearing benefits in the early years. An investor purchasing a unit in South Morang at the suburb's median unit price with a 20 per cent deposit and a 30-year principal and interest loan will pay more each month than the same investor on an interest-only arrangement, but will build equity in the property from day one and pay less interest over the life of the loan.

Documents Required for an Investment Loan Application

Lenders require proof of income, proof of deposit, and evidence that the property will generate rental income. For PAYG employees, this typically includes recent payslips, tax returns, and a notice of assessment. Self-employed applicants are generally required to provide two years of tax returns, two years of notices of assessment, and business financials including profit and loss statements and balance sheets. Some lenders offer loans for self-employed borrowers using alternative documentation, such as accountant-prepared financials or bank statements, though these products may attract higher interest rates.

Proof of deposit includes bank statements showing genuine savings or evidence of equity in an existing property. If the deposit is sourced from a gift, most lenders require a statutory declaration from the donor confirming the funds are a gift and not a loan. If the deposit is sourced from the sale of another property, the lender will require a copy of the contract of sale and settlement statement.

Rental income evidence is provided through a rental appraisal from a licensed property manager or real estate agent. The appraisal must be recent, typically within 90 days of application, and must be specific to the property being purchased. Lenders will not accept generic suburb-level rental data. For properties purchased off the plan or under construction, the rental appraisal is often prepared using comparable properties in the same development or precinct.

Fixed Rate, Variable Rate, or Split: What Works for Investment Loans

Fixed rate investment loans provide certainty over repayments and protect against rate rises during the fixed period, which is typically between one and five years. The trade-off is reduced flexibility. Most fixed rate products restrict additional repayments to a specified annual limit, often $10,000 or $20,000, and impose break costs if the loan is repaid or refinanced before the fixed period ends. Break costs are calculated based on the difference between the contracted fixed rate and the lender's cost of funds at the time of early repayment, and can be substantial if rates have fallen.

Variable rate investment loans offer full flexibility to make additional repayments, access offset or redraw facilities, and refinance to release equity or reduce the rate without penalty. Variable rates move in line with the Reserve Bank cash rate and lender funding costs, which introduces uncertainty over future repayments. For investors with fluctuating income or those planning to sell or refinance within a short timeframe, a variable rate structure is often the better fit.

A split rate structure combines a portion of the loan on a fixed rate and a portion on a variable rate. The fixed portion provides certainty, while the variable portion retains flexibility. The split can be tailored to the investor's cash flow and risk profile. An investor who expects rates to rise but wants to retain the ability to make lump sum repayments from a year-end bonus might fix 60 per cent of the loan and leave 40 per cent variable with an offset account attached.

Negative Gearing and the Grandfathering Provisions

From the 2027-28 income year, losses related to established residential investment properties acquired after 7:30pm AEST on 12 May 2026 are deductible only against other income from residential properties, including capital gains on residential properties. Excess losses can be carried forward to offset residential property income in future years. Properties held at 12 May 2026, including properties under contract awaiting settlement at that time, continue to benefit from full negative gearing against all income until the property is sold.

This grandfathering provision has direct implications for investment loan applications. Investors who exchanged contracts before 12 May 2026 but settle after that date retain access to unrestricted negative gearing for that property. Investors purchasing established properties after 12 May 2026 should model their after-tax cash flow assuming losses can only be offset against other residential property income. New builds acquired after 12 May 2026 remain eligible for unrestricted negative gearing, provided the dwelling was constructed on previously vacant land or the development increased the number of dwellings on the site.

The distinction between established and new build properties now carries a measurable financial impact. An investor purchasing a new three-bedroom townhouse in Greensborough may receive the same rental yield as an investor purchasing an established three-bedroom house in the same suburb, but the new build investor retains full negative gearing benefits while the established property investor does not. Lenders do not adjust serviceability assessments based on the property's eligibility for negative gearing, but brokers factor the tax treatment into cash flow projections and property selection advice.

Capital Gains Tax Changes from 1 July 2027

From 1 July 2027, the 50 per cent CGT discount for individuals, trusts, and partnerships on affected assets is replaced by cost base indexation using CPI and a 30 per cent minimum tax rate on real capital gains accruing from that date. For assets owned before 1 July 2027 and sold after that date, gains are taxed under the current rules for the portion accruing before 1 July 2027 and under the new rules for the portion accruing after that date. Taxpayers may either obtain a market valuation as at 1 July 2027 or apply an ATO-published apportionment formula.

For investors in eligible new build residential properties, both the existing 50 per cent CGT discount and the new indexation and 30 per cent minimum tax arrangements are available as a choice at the time of disposal. This preserves the capital gains tax advantage for new build properties and further widens the gap between new builds and established properties for long-term wealth accumulation.

Call one of our team or book an appointment at a time that works for you. We'll structure your application to align with your property strategy, identify the lenders that fit your borrowing profile, and prepare the documentation so the process runs on schedule.

Frequently Asked Questions