When you apply for property finance in Australia, you are applying for one of two things: money secured against a home you will live in, or money secured against a property held to produce income or growth. Lenders sort applications into those two categories early, and almost everything that follows — the rate construction, the features attached to the facility, the way your income is assessed — flows from which category you land in.
This guide explains where the differences show up, what to check before you apply, and why the tax outcome of an investment loan is a separate question from the mechanics of the loan itself.
The dividing line is how the property is used
The classification follows the security property and the purpose of the borrowing, not how you describe yourself. An owner-occupied loan is secured against a property you occupy as your residence. An investment loan is secured against a property that is not your residence and is held to earn income or capital growth.
The ATO product ruling covering Mortgage House's Blended Plus Loan Facility draws the line in similar terms. It describes the borrower's investment asset as potentially being "a residential property other than the owner-occupied property, or any other asset." The same ruling contemplates a borrower who holds a home loan while also holding, directly or through an associated entity, one or more investment or commercial loans with the same lender. That combination is unremarkable — plenty of borrowers carry both kinds of debt at once.
The practical consequence is that classification can change. If you move out of your home and start renting it out, or move into a property you previously rented out, the use of the security has changed and you need to tell your lender. Do not assume the loan quietly reclassifies itself.
Pricing: the rate is constructed, not simply quoted
It is tempting to treat a headline rate as a single figure. On some facilities it is better understood as something built from parts, and two borrowers can be offered different outcomes on the same product.
The clearest documented example available here comes from the ATO product ruling on Mortgage House's Blended Plus Loan Facility. Per that ruling, the home loans covered are offered, struck and maintained on Mortgage House's standard terms in all respects except for a discounted interest rate. That discount is not open-ended. It is subject to a floor rate of 0.75% above the Reserve Bank of Australia cash rate for full doc home loans, and 1.25% above the RBA cash rate for alt doc home loans.
Three lessons carry over to any application you are considering:
- A rate may be expressed against a benchmark. A floor set "above the RBA cash rate" moves when the cash rate moves. It is not a fixed figure you can lock out of your thinking.
- Documentation type can affect pricing. The ruling distinguishes full doc from alt doc loans and applies a different floor to each. How you evidence your income is therefore not just an approval matter.
- A discount on one component does not make the whole facility concessional. In this arrangement everything outside the discount stayed on standard terms.
Whether any given lender prices investment borrowing above, below or level with owner-occupied borrowing, and by what margin, changes over time and differs between lenders. Treat any generalisation you read as a question to put to each lender rather than an answer. Ask every lender to put its pricing in writing, including the comparison rate.
Features worth checking line by line
Feature differences matter more on investment borrowing because the loan usually runs alongside other debt and the property generates cash flow. Ask specifically about:
- Repayment structure. Are principal-and-interest and interest-only repayments both available, for what period, and what does the repayment revert to afterwards?
- Offset and redraw. How does each operate on this loan, and what are the limits on deposits and withdrawals?
- Loan splits. Can the facility be split into separate accounts for separate purposes?
- Term and portability. What is the maximum term, and can the loan be moved to a different security later?
- Packaging. If you already hold other loans with the same lender, what does the packaged arrangement actually change?
Do not assume features available on an owner-occupied product from the same lender are offered on its investment product. Confirm.
Assessment: rental income and existing debt
Assessment for an owner-occupied loan centres on your income and your household living costs. Add an investment property and two more variables enter the calculation.
The first is rental income. Ask how much of the expected rent the lender counts, and whether it applies any shading or haircut to that figure. The second is your existing debt position. A lender assessing a new purchase will look not only at your income but also at the repayments you already carry, including the investment loans you hold elsewhere. Borrowers building a portfolio often find each new application is assessed against the whole portfolio rather than in isolation.
Documentation matters here too. The full doc and alt doc distinction in the ruling above is a reminder that how you prove your income influences what you are offered, not merely whether you are approved.
Tax treatment is a separate question from loan mechanics
How a loan is priced, packaged and repaid is one question. Whether the interest is deductible, and what happens to that deductibility across the life of the loan, is a different question — one that turns on your circumstances and on the use of the borrowed funds, and sits with the ATO rather than with your lender.
The separation is visible in the source material itself. The pricing arrangements described above are set out in an ATO product ruling, which records the ATO's published view on a specific arrangement. A lender sets the terms of the facility; it does not determine your tax position.
The practical caution is that the purpose for which funds are applied drives the tax outcome. Mixing private and income-producing purposes inside one facility, or drawing on a redraw or offset balance for private spending, can complicate that picture considerably. Before you rely on any tax outcome, read the ruling and the product documentation yourself, and speak to a registered tax agent or the ATO directly.
Questions to put to a lender before you apply
Work through this list with each lender you are considering:
- Is this application assessed as owner-occupied or investment, and what triggers a change?
- What is the interest rate, the comparison rate, and what benchmark or floor is the rate built from?
- Does the pricing differ between full doc and alt doc applications? If so, how?
- What documentation is required to evidence income?
- Is interest-only available, for how long, and what is the reverted repayment?
- How do offset and redraw operate on this loan?
- How is rental income treated in the assessment?
- Can the loan be split, and are there fees for doing so?
- What happens if I later move into the property?
- Which parts of the deal are standard terms and which are discounted or concessional?
Concrete next steps
Start by settling the question of use. Decide whether the property is genuinely going to be your residence or genuinely held for income, and keep your application, your records and your tax position consistent with that decision.
Then get written pricing from more than one lender, for the correct category, including comparison rates and the full fee schedule. Do not accept a verbal summary of a packaged arrangement — ask for the facility terms.
Before settlement, and before you commit to any structure involving offset accounts, redraw, splits or refinancing of existing debt, get advice from a registered tax agent. Finally, review the classification if your circumstances change, including if you move into or out of the property.
You can review current options for borrowing against an investment property at /money/home-loans/.
General information only
This article is general information for Australian readers and is not legal, tax, credit or financial advice, and not a personal recommendation. It does not take account of your objectives, financial situation or needs. Loan pricing, features and assessment policies change, and the arrangement described here is specific to one lender and one facility. Tax outcomes depend on your individual circumstances and the use of the funds. Verify current terms with the lender and the product documentation, confirm tax treatment with the ATO or a registered tax agent, and obtain independent advice before acting. No approval, rate, saving or return is promised or implied.