Buying your first investment property as an ambulance officer means assessing serviceability on shift income, choosing a loan structure that supports cash flow, and understanding how lenders price investor loans differently to owner-occupied lending.
What Lenders Look for When You Apply for an Investment Loan
Lenders assess your capacity to service both your existing home loan, if you have one, and the new investment loan together, using your salary plus 80 per cent of the expected rental income. The remaining 20 per cent is a vacancy allowance. If you earn $90,000 in base salary plus penalties and allowances, the lender counts your full income. If the property is likely to rent for $550 per week, the lender adds $440 per week to your serviceability calculation. Your application is then tested at the loan rate plus a 3.0 percentage point buffer. This buffer has been in place since October 2021 and applies to all new lending through authorised deposit-taking institutions. Lenders also apply higher risk weights to investor loans under prudential standards, which flows through to slightly higher rates and tighter serviceability.
Interest Only or Principal and Interest Repayments
Interest-only repayments reduce your monthly commitment and preserve cash flow, which matters if you are carrying two loans or managing uneven penalty payments across the roster. The lender will assess you at the principal and interest rate even if you take an interest-only period, so your borrowing capacity is the same either way. Interest-only periods typically run for one to five years, after which the loan reverts to principal and interest unless you apply to extend. Consider a buyer who purchases a unit and chooses a five-year interest-only term. Monthly repayments are lower during that period, but the loan balance does not reduce. When the interest-only period ends, repayments increase because the principal must now be repaid over the remaining loan term. The choice depends on whether you are prioritising cash flow now or building equity sooner. If you are planning to add a second property within a few years, keeping cash flow available often makes more sense than paying down the first loan quickly. Interest on the full loan amount remains deductible regardless of the repayment structure, provided the property is rented or genuinely available for rent.
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Variable or Fixed Rate for Your First Investment Property
Variable rates on investment loans sit slightly higher than owner-occupied variable rates, but they allow unlimited extra repayments and full offset access where the lender offers it. Fixed rates lock in your repayment for one to five years and remove interest rate risk during that period, but you lose flexibility. If you fix and your circumstances change, or if you want to access equity or refinance before the fixed term ends, you may face break costs. Most borrowers split the loan, fixing part for certainty and leaving part variable for flexibility. A split also lets you hold an offset account against the variable portion, which reduces interest without affecting your deductibility. Some lenders offer rate discounts on larger loan amounts or where you hold multiple products with the institution. Rate discounts typically range from 0.10 to 0.70 percentage points depending on the lender and the loan features you select.
How Much Deposit You Need and Where LMI Applies
Most lenders require a 10 per cent deposit plus costs for an investment property, which means you are borrowing at 90 per cent loan-to-value ratio once costs are added to the loan. At 90 per cent LVR, lenders mortgage insurance applies. The LMI premium is calculated on the loan amount and LVR and is usually added to the loan balance. Some lenders offer LMI waivers to paramedics and ambulance officers at higher LVRs for owner-occupied lending, but these waivers rarely extend to investment loans. If you already own a home and have built equity, you can use that equity as your deposit rather than cash savings. The lender will value your existing property, allow you to borrow against it up to a combined 90 per cent LVR across both properties, and use the released equity to fund the deposit and costs on the investment property. Equity release loans are commonly structured this way for first investment property purchases. The advantage is that you do not need to save a separate deposit, and all interest across both loans remains deductible because both are used to acquire or hold income-producing property.
Rental Income and Serviceability Across the Roster
Your base salary, penalties, allowances, overtime and any other regular income are counted in full when applying for an investment loan. Lenders treat paramedic and ambulance income as stable employment income, and most will accept two recent payslips and a letter of employment. If you receive penalty rates or shift allowances, those are included provided they have been consistent over the previous three to six months. Lenders add 80 per cent of the expected rental income to your total income when calculating serviceability. The expected rent is based on a rental appraisal from a licensed property manager or real estate agent in the area where you are buying. If the property is tenanted at the time of purchase, the lender uses the lower of the current lease amount or the appraisal. Vacancy assumptions account for periods between tenants, maintenance, and other holding costs. The same 3.0 percentage point serviceability buffer applies to the total loan commitment, so your capacity to borrow depends on your income, your existing debts, and the rent the property will generate.
Using Negative Gearing From the Start
Negative gearing means the deductible costs of holding the property exceed the rental income, and you can offset that loss against your other income, including your ambulance salary. For properties purchased before 12 May 2026, this treatment continues in full. For established properties purchased after that date, from the 2027-28 income year, losses can only be offset against other residential property income, including capital gains on residential property. Losses can be carried forward. Eligible new build properties purchased after 12 May 2026 retain full negative gearing. A new build is defined as a dwelling constructed on previously vacant land or a development that increases the number of dwellings on the site. Deductible holding costs include interest, council rates, water rates, strata levies if applicable, insurance, property management fees, repairs, and depreciation on the building and fixtures. Interest is deductible for the period the property is rented or genuinely available for rent. If the property is vacant for an extended period and not advertised, the ATO may disallow deductions for that period. Most first investment property buyers structure the loan as interest-only to maximise the deduction and preserve cash flow, then rely on capital growth to build equity rather than principal repayments.
Structuring the Loan to Protect Deductibility Later
Keep the investment loan separate from any owner-occupied lending and do not redraw funds from the investment loan for private purposes. If you redraw and use the funds for anything other than the investment property, that portion of the loan is no longer deductible. Where you hold an offset account against the investment loan, do not deposit funds you intend to use for private expenses unless you are prepared to lose part of your deduction. The cleanest structure is a standalone loan for the investment property with its own offset account, kept entirely separate from your owner-occupied loan. If you plan to upgrade your home in future and use equity from the investment property to fund the upgrade, speak to your broker and accountant before drawing down. The way you structure the borrowing will determine how much remains deductible. Debt recycling is a separate strategy that involves converting non-deductible owner-occupied debt into deductible investment debt over time, but it requires careful structuring from the start.
Applying the DTI Limit to Your Investment Loan Application
From 1 February 2026, lenders may lend no more than 20 per cent of their quarterly new investor lending to borrowers with a total debt-to-income ratio of six times or greater. Your total DTI is calculated as all home loan debt, including your existing home loan and the new investment loan, divided by your gross annual income before tax. If you earn $95,000 and are applying to borrow $400,000 for an investment property while holding a $350,000 owner-occupied loan, your total debt is $750,000 and your DTI is 7.9. You fall above the six times threshold, which means the lender must include your application in their high-DTI allocation. Some lenders have responded by tightening policy for borrowers above six times. Others continue to lend but require stronger serviceability or a larger deposit. In our experience, most ambulance officers purchasing their first investment property sit below the six times threshold, particularly where rental income is added to serviceability. The limit applies to lender reporting, not to individual eligibility, but it influences how lenders price and approve loans at higher leverage.
Choosing the Right Property for Income and Growth
Your first investment property should be selected for rental demand and long-term growth, not personal preference. Units closer to hospitals, transport, and universities typically achieve lower vacancy rates and attract more stable tenants. Older-style units in established areas often return higher rental yields than new apartments, but new builds offer depreciation benefits and access to full negative gearing under current tax rules. Strata levies and body corporate fees reduce your net rental income and should be factored into your cash flow projection before you buy. Consider a scenario where a unit in an established suburb returns $480 per week in rent with quarterly strata fees of $1,200. The net rental income after strata is around $23,000 per year, or $442 per week. For serviceability, the lender will use 80 per cent of the gross rent, which is $384 per week. Your cash flow, however, is based on the net amount after all costs. Run the numbers on rental yield, holding costs, and serviceability before you make an offer. Properties that look affordable based on purchase price may not stack up once strata, rates, and interest are included. Most brokers can model this for you using your actual income, existing debts, and the property details.
Call one of our team or book an appointment at a time that works for you. We will assess your income across the roster, compare investment loan options from lenders that back paramedics, and structure the application to support your first investment property and the portfolio you are building after it.
Frequently Asked Questions
How much deposit do I need for my first investment property?
Most lenders require a 10 per cent deposit plus costs, which pushes the loan-to-value ratio to around 90 per cent once costs are added. At 90 per cent LVR, lenders mortgage insurance applies. You can use equity from your existing home instead of cash savings.
Do lenders count my full paramedic income including penalties?
Yes, lenders count your base salary, penalties, allowances, and regular overtime in full when assessing an investment loan. You will also receive credit for 80 per cent of the expected rental income, with the remaining 20 per cent treated as a vacancy allowance.
Should I choose interest-only or principal and interest repayments?
Interest-only repayments reduce your monthly commitment and preserve cash flow, which is useful if you are managing two loans or planning to add another property. Lenders assess you at the principal and interest rate regardless, so your borrowing capacity is the same either way.
Can I still use negative gearing on my first investment property?
Yes, but the treatment depends on when and what you buy. Properties purchased before 12 May 2026 retain full negative gearing. For established properties purchased after that date, losses can only be offset against other residential property income from the 2027-28 income year. Eligible new builds retain full negative gearing.
What is the debt-to-income limit and does it affect me?
From 1 February 2026, lenders can lend no more than 20 per cent of their quarterly investor lending to borrowers with a total debt-to-income ratio of six times or greater. This may tighten approval for highly leveraged borrowers, but most first investment property buyers sit below the threshold, especially with rental income included.
