Beginner's Guide to Property Investment Loans

An investment loan is finance used to purchase a property that generates rental income rather than a home you'll live in.

Lenders treat these loans differently from owner-occupied home loans because the risk profile changes when a property sits vacant or a tenant falls behind on rent. That difference shows up in deposit requirements, interest rates, and the way serviceability gets calculated. Whether you're considering your first investment property or adding to an existing portfolio, understanding how these loans work helps you structure your borrowing in a way that supports your long-term strategy without overextending your finances.

How Lenders Assess Investment Loan Applications

Lenders calculate your borrowing capacity by adding rental income to your existing income, then deducting all expenses including the proposed loan repayments.

Most lenders only count 80% of the expected rental income when assessing serviceability. This buffer accounts for vacancy periods, maintenance costs, and the reality that rental properties don't always generate income every week of the year. A property generating $500 per week in rent contributes $400 per week to your serviceability calculation. Your existing debts, living expenses, and other loan commitments get factored in at the same time, which means the amount you can borrow for an investment property often differs significantly from what you could borrow for a home you plan to live in.

Deposit Requirements and Loan to Value Ratios

Most lenders require a minimum 10% deposit for investment properties, though some will lend with as little as 5% if you're willing to pay Lenders Mortgage Insurance.

The loan to value ratio determines both whether you need LMI and what interest rate you'll receive. Borrowing 90% or more of the property value typically triggers LMI, which protects the lender if you default but adds an upfront cost that can run into thousands of dollars. Keeping your LVR at 80% or below usually avoids LMI and also unlocks lower interest rates. Consider a scenario where you're purchasing an investment property at the current median for Launceston. With an 80% LVR, you'd avoid LMI and likely secure a rate discount compared to borrowing at 90%. That difference compounds over the life of the loan, affecting both your cash flow and how quickly you can build equity.

Interest Only vs Principal and Interest Repayments

Interest only loans let you pay only the interest portion of your loan for a set period, usually one to five years, which reduces your required monthly repayment.

Many property investors choose interest only structures because they maximise cash flow in the early years and allow them to claim the full interest charge as a tax deduction. The trade-off is that your loan balance doesn't reduce during the interest only period, which means you're not building equity through repayments. Once the interest only period ends, the loan reverts to principal and interest repayments, and your monthly payment jumps. In our experience, investors who plan to hold a property long-term often switch to principal and interest repayments after a few years to start reducing debt, while those focused on portfolio growth might extend interest only terms as long as the lender allows.

Variable vs Fixed Rate Investment Loans

Variable rates move with the market and typically offer features like offset accounts and unlimited additional repayments, while fixed rates lock in your interest rate for a set term but limit flexibility.

For investment properties, offset accounts can be particularly valuable because any funds you park in the offset reduce the interest you're charged without affecting your tax deductions. The interest on your investment loan remains fully deductible, but you're paying interest on a lower effective balance. Fixed rates remove uncertainty around repayments, which helps with budgeting, but break costs can be substantial if you need to refinance or sell before the fixed term ends. Some investors split their loan, fixing a portion for stability while keeping another portion variable for flexibility and offset benefits.

Negative Gearing and Tax Deductions

Negative gearing occurs when your property expenses, including loan interest, exceed your rental income, creating a tax-deductible loss.

This loss reduces your overall taxable income, which can result in a tax refund depending on your marginal rate. The benefit increases the higher your income, as the deduction is worth more at higher tax brackets. Claimable expenses include loan interest, property management fees, insurance, council rates, repairs, and depreciation on the building and fixtures. Stamp duty and some settlement costs are also deductible in the year you incur them. As an example, an investor earning $90,000 per year who incurs a $5,000 annual loss on their investment property would reduce their taxable income to $85,000, potentially receiving a refund of around $1,500 depending on their other deductions and circumstances. The Australian Taxation Office publishes detailed guidelines on what qualifies as a deductible expense, and working with an accountant ensures you're claiming everything you're entitled to without overstepping.

Using Equity to Fund Your Deposit

If you already own property, you can often borrow against the equity in that property to fund the deposit on your investment purchase.

This strategy, known as equity release, lets you enter the investment market without saving a separate cash deposit. Lenders will typically let you borrow up to 80% of your existing property's value without requiring LMI, which means if your home is worth $600,000 and you owe $300,000, you have access to roughly $180,000 in usable equity. That amount can cover the deposit and purchase costs on an investment property while keeping your LVR across both properties at a manageable level. The risk is that you're increasing your overall debt, and both loans need to be serviced from your income and rental returns. We regularly see clients use equity from their Hobart home to purchase an investment property in Launceston or Devonport, where rental yields can be higher and entry prices lower.

Choosing the Right Loan Structure for Portfolio Growth

The way you structure your investment loan affects how quickly you can borrow again for your next property.

Keeping loans separate rather than bundling them into one facility makes it easier to sell or refinance individual properties without disrupting your entire portfolio. Using interest only repayments on investment loans while paying down your owner-occupied home loan more aggressively can improve your borrowing capacity for future purchases, as lenders assess each loan's serviceability individually. Some investors also choose to keep their investment loans with different lenders to access better rates or avoid concentration limits, where a single lender caps how much they'll lend you across all properties. This approach requires more administration but provides flexibility as your portfolio grows and your strategy evolves.

The timing matters as much as the structure. Speak with one of our team or book an appointment at a time that works for you to discuss your property investment goals and get clarity on which loan structure supports what you're trying to achieve.

Frequently Asked Questions