Understanding the Basics of Investment Property Loans

Loan Structures for Investment Properties

Investment property loans differ from owner-occupier home loans in repayment structure, pricing and approval criteria. Most lenders price investor loans at a slightly higher interest rate than standard home loans, typically between 0.15 and 0.35 percentage points above owner-occupier rates. The pricing reflects higher risk weights that banks must apply to investor lending under prudential standards.

Repayment structures matter more for investment properties than for homes you live in. Interest-only periods let you pay only the interest portion of the loan for an agreed term, usually one to five years, keeping monthly repayments lower while the property generates rental income. Principal and interest repayments are also available and reduce the outstanding loan balance over time. Your choice depends on cash flow, tax position and whether you plan to pay down the investment loan or your home loan first.

Variable and fixed rate options work the same way as they do for owner-occupier lending. A variable rate moves with the market and gives you flexibility to make extra repayments or redraw without penalty. A fixed rate locks your interest cost for a set term but usually restricts additional payments and charges break costs if you exit early. Some investors split their loan between fixed and variable to balance certainty with flexibility.

How Much You Can Borrow

Lenders assess investment loan applications at a higher interest rate than the actual loan rate. All banks must apply a serviceability buffer of at least 3.0 percentage points above the loan product rate when calculating your ability to repay. If the variable rate on offer is 6.5 per cent, the bank will test whether you can afford repayments at 9.5 per cent. The buffer applies to new borrowers only and has been in place since October 2021.

Rental income from the investment property is included in your serviceability assessment, but most lenders apply a shading factor of 20 to 30 per cent to account for vacancy periods, maintenance costs and property management fees. If the property generates $600 per week in rent, the lender might only count $420 to $480 per week when assessing your capacity to service the loan. This shading is separate from any vacancy periods you actually experience.

Debt-to-income limits also apply. From February 2026, banks can lend no more than 20 per cent of new investor loans to borrowers with total debt of six times their gross income or more. The limit applies across all your borrowings, including your home loan, car loans and credit cards. If your household income is $120,000, total borrowings above $720,000 would place you in the high debt-to-income category, which may limit your options depending on how much high-ratio lending the bank has already written that quarter.

Deposit and Lenders Mortgage Insurance

Most lenders require a minimum 10 per cent deposit for investment property purchases, though some will lend at higher loan-to-value ratios if you meet specific criteria. A deposit of 20 per cent or more typically avoids lenders mortgage insurance. Where the loan-to-value ratio exceeds 80 per cent, LMI is charged to the borrower and calculated on a sliding scale based on loan size and LVR. Premiums can range from a few thousand dollars to tens of thousands depending on the amount borrowed.

Some lenders offer LMI waivers for teachers and other education professionals on investment loans, though the waiver is less common for investors than it is for owner-occupiers. Where a waiver does apply, it usually caps at 90 per cent LVR and may require you to meet minimum income or employment tenure requirements. Capitalising the LMI premium into the loan amount is permitted but increases your borrowing and ongoing interest cost.

Genuine savings requirements apply at most lenders when your deposit is less than 20 per cent. Genuine savings are funds you have accumulated over at least three months, held in your own name, and evidenced by consecutive bank statements. Equity from an existing property, including your home, can substitute for cash savings and is commonly used by educators who already own where they live. Releasing equity to fund an investment deposit does not require genuine savings, but it does require sufficient income to service both loans after the buffer and rental shading are applied.

Tax Treatment and Recent Legislative Changes

Interest on an investment property loan is tax deductible when the property is rented or genuinely available for rent. The deduction applies to the interest portion of your repayments, not the principal. Other holding costs including rates, insurance, property management fees, repairs and depreciation are also claimable.

Negative gearing rules changed in May 2026. If you owned an investment property or had exchanged contracts before 7:30pm AEST on 12 May 2026, you can continue to deduct losses from that property against your salary and other income until you sell. The same treatment applies if you purchase an eligible new build. For established properties purchased after that date, losses can only be offset against income from other residential properties, including capital gains. Excess losses carry forward to future years but cannot reduce your salary or wages for tax purposes from the 2027-28 income year onward.

Consider an educator who exchanged contracts on an established townhouse in April 2026. Rental income covers most of the loan repayments, but after interest, rates, insurance and agent fees, the property runs at a loss of $4,000 per year. That loss can be deducted against the educator's teaching salary indefinitely under the grandfathering rule. If the same property were purchased in November 2026, the $4,000 loss could only offset income from other residential property investments, not the teaching salary, from July 2027 onward.

Capital gains tax arrangements also changed. For gains accruing from 1 July 2027, the 50 per cent CGT discount is replaced by cost base indexation and a 30 per cent minimum tax rate on real gains. You index your purchase price by CPI and pay tax only on above-inflation profit. For properties owned before 1 July 2027, gains are split between the old and new regimes based on a valuation or ATO formula. Eligible new builds retain access to both the 50 per cent discount and the indexed method, with the choice available at sale.

Interest-Only Lending and Cash Flow

Interest-only repayments suit investors who want to minimise monthly outgoings while building equity through capital growth rather than principal reduction. The interest-only period is typically one to five years, after which the loan reverts to principal and interest unless you negotiate an extension. During the interest-only term, your repayments are lower but the loan balance does not reduce.

Lenders assess interest-only applications on a principal and interest basis, meaning they calculate serviceability as if you were paying down the loan from day one. This serviceability overlay ensures you can afford the higher repayment once the interest-only period ends. If the lender is not satisfied you can service principal and interest repayments, the interest-only request will be declined even if you can comfortably afford the interest-only amount.

Interest-only loans exceeding 80 per cent LVR and five years in duration are classified as non-standard under prudential rules, attracting higher capital charges for the lender. Most banks will not offer interest-only terms beyond five years at high LVR as a result. Switching between interest-only and principal and interest during the life of the loan is possible but requires lender approval and may involve a rate or product change.

Location, Property Type and Lender Appetite

Not all lenders treat all property types and locations the same way. Apartments in high-density precincts, regional properties and locations with high vacancy rates may attract loan-to-value ratio restrictions, higher interest rates or outright declines from some lenders. Postcode-level lending policies are common and are updated regularly based on supply, demand and economic conditions in each area.

If you are purchasing a unit, the lender will want to see evidence of body corporate insurance, a sinking fund balance and recent financial statements for the owners corporation. Lenders may decline or limit lending where the body corporate is involved in litigation, where the sinking fund is insufficient or where a large special levy is pending. Strata reports are usually ordered by your solicitor during the cooling-off period and should be reviewed before you proceed to unconditional exchange.

Some lenders apply portfolio concentration limits to certain suburbs or postcodes. If a bank has already written a large volume of loans in a particular area, it may temporarily restrict new lending there to manage risk. This does not mean the property or location is unsuitable, it simply means that lender has reached its internal exposure limit. Working with a mortgage broker for teachers gives you access to lenders who are still actively lending in your target area.

Refinancing and Portfolio Growth

Refinancing an investment loan can reduce your interest rate, release equity for further investment or switch your loan structure to suit changing circumstances. Rate discounts are not static, and the margin you received two or three years ago may no longer reflect what is available now. Many investors refinance every few years to ensure they remain on a competitive rate and to access equity for deposit on the next purchase.

Equity release works by refinancing your existing loan to a higher amount and using the additional funds as a deposit elsewhere. The refinanced loan remains secured by the original property but the borrowed amount increases. Lenders will reassess your income and serviceability as part of the refinance application, and the same serviceability buffer and rental shading apply.

In our experience, educators with stable employment and salary progression find it easier to demonstrate serviceability for multiple investment properties than borrowers with variable or commission-based income. If your plan includes building a small portfolio over time, starting with one property and refinancing once you have built equity is a common pathway. The debt-to-income limit introduced in February 2026 does create a ceiling on total borrowing, so planning your portfolio with those constraints in mind matters from the outset.

Getting Your Application Ready

Investment loan applications require the same core documents as home loans for teachers, with some additional items. You will need payslips, tax returns, bank statements, and evidence of your deposit. If you are relying on rental income from the property you are purchasing, the lender will ask for a copy of the signed lease or a rental appraisal from a licensed agent.

Pre-approval is available for investment purchases and works the same way it does for owner-occupier lending. The lender assesses your income, liabilities and serviceability in advance and issues conditional approval for a loan amount and term. Getting loan pre-approval before you make an offer confirms your budget and strengthens your position when negotiating with the seller. Pre-approvals are typically valid for three to six months and are subject to satisfactory property valuation and final credit assessment.

If you own your home and plan to use equity as your deposit, the lender will revalue your home as part of the application. The valuation is usually desktop or kerbside unless the loan amount or LVR requires a full inspection. Allow at least two to four weeks for a full investment loan assessment, longer during peak periods or if any part of your application requires manual review.

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