Unlock the secrets to Property Investment Challenges

Borrowing for investment property is different.

Lenders assess the loan differently, price it differently, and expect you to service it differently than your own home. If you earn a stable salary as a high school teacher, you still need to meet tighter criteria, especially now that debt-to-income limits apply separately to investor lending.

How Lenders Assess Your Investment Loan Application

Your investment loan is stress-tested at a rate at least three percentage points higher than the rate you will pay. Lenders also count only 80 per cent of the expected rent when calculating your ability to service the debt. This buffer accounts for vacancy, maintenance, and periods where the property sits empty between tenants.

Consider a teacher earning $105,000 who already has a $450,000 mortgage on their own home. They want to borrow $520,000 to purchase an investment property that will rent for $650 per week. The lender will assess the new loan at around 9.5 per cent, even if the actual rate is closer to 6.5 per cent. At the same time, the rent is credited at $520 per week, not the full $650. Between the buffer rate and the rental discount, the borrowing capacity for investment is often 20 to 30 per cent lower than it would be for an owner-occupied purchase at the same income level.

Since February, lenders have also been required to keep high debt-to-income lending below 20 per cent of their new investor loan book each quarter. If your total borrowing is more than six times your gross income, you may find your application declined by some lenders even if you can service the debt on paper. Other lenders remain more flexible, particularly if you have no other debts and a clean repayment history.

Why the Deposit Matters More for Investment Property

Investment loans over 80 per cent loan-to-value ratio attract higher capital costs for lenders, and those costs are passed through to you in the form of higher interest rates and lenders mortgage insurance. LMI premiums on investment lending are calculated at higher rates than owner-occupied lending, and the premium itself is not tax deductible because it is a capital cost, not a borrowing cost.

If you are a permanent teacher and intend to live in the property first, some lenders will allow you to access LMI waivers for teachers at loan-to-value ratios up to 90 or even 95 per cent, provided the loan is classified as owner-occupied at settlement. Once you move out and convert the loan to investment, the waiver remains in place. The loan must genuinely be your home at the start. Lenders will ask for evidence, and if they suspect the intent was always investment, the waiver will be withdrawn and the loan may be repriced or declined.

What Happens When You Already Own Your Home

Most teachers buying investment property already own their home, either outright or with a mortgage still running. If you have equity in that home, you can use it as security for part or all of the deposit on the investment purchase. This is done by increasing the loan against your home, rather than selling assets or drawing down savings.

Equity lending does not remove the need to meet serviceability tests. The same buffers and rental discounts apply. But it does give you access to the deposit without liquidating other investments or waiting years to save in cash. The borrowed deposit still counts as debt when the lender calculates your total borrowing position, so the amount you can access for the investment purchase will be lower than if you had used cash savings.

One advantage of using equity is that the interest on the additional borrowing may be deductible if the funds are used to purchase an income-producing asset. The deductibility depends on how the loan is structured and what the borrowed funds are used for, not on what security is offered. You should speak to an accountant before proceeding, but in many cases the interest on the portion borrowed to fund the deposit is deductible in the same way as the interest on the main investment loan.

Interest-Only Repayments and Cashflow

Most investors choose interest-only repayments for the first few years. This keeps the monthly repayment lower, which reduces the gap between rent received and loan costs. For a $520,000 loan at 6.5 per cent, the interest-only repayment is around $2,817 per month. The principal-and-interest repayment on a 30-year term would be closer to $3,287 per month. Over five years, that difference is around $28,200 in cashflow.

Interest-only periods on investment loans are typically limited to five years, after which the loan reverts to principal and interest unless you apply to extend. Lenders are more cautious about extending interest-only terms on loans above 80 per cent LVR, particularly if the property has not increased in value or if your income has not changed since the loan was first approved. Some lenders will allow up to ten years interest-only on investment loans below 80 per cent LVR, provided serviceability is maintained.

The choice between interest-only and principal-and-interest depends on your tax position, cashflow needs, and whether you plan to pay down your own home loan first. There is no tax advantage to paying down the investment loan ahead of schedule, because the interest is deductible. If you have a non-deductible mortgage on your own home, most accountants will tell you to clear that debt first.

What Changed in the Last Year

From the 2027-28 income year, losses on established investment properties purchased after 12 May 2026 can only be offset against income from other residential property, not against your salary. If you bought your investment property before that date, or if you are buying a newly built property, the old rules still apply and rental losses remain fully deductible against your teaching income.

For properties affected by the new rules, any rental loss is carried forward and can be used to reduce tax on future rental income or capital gains when you sell. The restriction does not apply to interest itself, which remains deductible. It applies to the net loss after all income and expenses are taken into account.

For capital gains, the 50 per cent discount is being replaced from 1 July 2027 with cost base indexation and a 30 per cent minimum tax rate on real gains. For properties owned before that date, gains are split into a pre-July 2027 portion taxed under the old rules and a post-July 2027 portion taxed under the new rules. You can choose a market valuation at 1 July 2027 or use the ATO apportionment method. New builds remain eligible for the 50 per cent discount regardless of purchase date.

Refinancing Your Investment Loan

If your investment loan is more than two years old, your rate may no longer reflect what is available to new borrowers. Investment loan rates are typically between 0.3 and 0.6 percentage points higher than equivalent owner-occupied rates, but within the investor category there is still a wide spread between lenders. Some will price more aggressively if the loan is below 80 per cent LVR, if you hold other accounts with them, or if the loan amount is above a certain threshold.

Refinancing an investment loan follows the same serviceability rules as a new application. The lender will reassess your income, your rental income at the discounted rate, and your ability to service all debts at the buffer rate. If your circumstances have changed since the original loan was approved, you may not be able to refinance the full amount with a new lender, even if you have been meeting repayments without difficulty. This is particularly relevant for teachers who have taken parental leave, reduced hours, or moved to a casual or contract role since the loan was first approved.

If you are considering investment loan refinancing and your current loan includes features such as an offset account, redraw facility, or the ability to make extra repayments without penalty, check whether those features will be available with the new lender. Some lower-rate investment loan products are more restricted.

Call one of our team or book an appointment at a time that works for you. We work with lenders who understand teacher income, and we will run the numbers before you commit.

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