Understanding Investment Loans for Rental Property
An investment loan is finance you take out specifically to purchase property that generates rental income rather than one you'll live in. The lender assesses your application differently to an owner-occupied home loan because the property's income potential becomes part of the calculation, and your repayment structure often looks different.
Most lenders will include around 80% of your expected rental income when calculating how much you can borrow. If a property in Werribee rents for $450 per week, they'll typically count $360 of that toward your borrowing capacity. This adjustment accounts for vacancy periods and maintenance costs. Your existing income still matters, but rental returns give you additional borrowing power that owner-occupiers don't have access to.
Consider someone earning $95,000 annually who wants to buy a two-bedroom unit as a rental investment. The property costs $480,000 and achieves $420 per week in rent. With a 10% deposit of $48,000, they need to borrow $432,000 plus costs. The lender adds approximately $336 weekly rental income to their serviceability calculation, which may allow them to borrow an amount they couldn't reach for an owner-occupied purchase. They'll also need to budget for Lenders Mortgage Insurance (LMI) because their loan to value ratio sits above 80%, adding roughly $15,000 to upfront costs.
Interest Only Investment Loans and Repayment Structures
Most property investors choose interest only repayments for the first one to five years of their loan. You pay only the interest portion during this period, which keeps monthly repayments lower and increases your cash flow. After the interest only period ends, the loan converts to principal and interest repayments unless you renegotiate.
For the $432,000 loan mentioned earlier, interest only repayments at a variable interest rate might sit around $2,160 per month, while principal and interest repayments on the same loan could reach $2,680. That $520 monthly difference gives investors breathing room to cover maintenance, body corporate fees, or vacancy periods. The rental income of approximately $1,680 per month doesn't cover the full loan cost either way, creating what's called negative gearing.
Negative Gearing Benefits and Tax Deductions
When your rental expenses exceed your rental income, you're negatively geared. You can claim this loss against your other taxable income, which reduces the tax you pay. Claimable expenses include loan interest, property management fees, insurance, repairs, and depreciation.
In the scenario above, annual loan interest of roughly $25,900, plus $3,500 in other expenses, creates a total cost of $29,400. Annual rental income of $20,160 leaves a shortfall of $9,240. Someone on a marginal tax rate of 37% could reduce their tax by approximately $3,400, bringing their actual annual cost down to $5,840, or about $112 per week. The property might also appreciate over time, building wealth through capital growth while tenants effectively contribute to paying it off.
Ready to chat to one of our team?
Book a chat with a Mortgage Broker at Mortgage Run today.
Investment Loan Features That Matter for Rental Properties
Offset accounts rarely appear on investment loans because the interest you pay is tax deductible, and reducing that interest through an offset actually works against you at tax time. Redraw facilities can be useful if you want access to extra repayments, but most investors avoid paying down principal during the interest only period.
You do want the ability to refinance without significant costs. Property investors often refinance to access equity as their property value increases or to secure better investor interest rates when their fixed rate period ends. A loan with minimal exit fees and reasonable valuation costs gives you flexibility as your portfolio grows.
Portability can help if you decide to sell one investment property and purchase another. Some lenders allow you to transfer your existing loan to the new property, avoiding discharge and establishment fees. Not every lender offers this, and conditions apply, but it's worth considering if portfolio growth is part of your property investment strategy.
Deposit Requirements and Using Equity
Most lenders require at least a 10% deposit for an investment property, though some accept less with LMI. A 20% deposit avoids LMI entirely and often unlocks better interest rate discounts. Unlike owner-occupied lending, genuine savings requirements are sometimes more relaxed for investors because rental income provides additional security.
If you already own property, you might leverage equity instead of saving cash. Someone with a home in Point Cook valued at $650,000 with a remaining loan of $380,000 has $270,000 in equity. They can typically access up to 80% of the home's value, meaning they could borrow against $520,000 total. That leaves $140,000 available for a deposit and costs on an investment property without touching savings. This equity release approach accelerates portfolio growth but increases your overall debt and risk.
Variable Rate vs Fixed Rate for Investment Property
A variable rate gives you flexibility to make extra repayments or refinance without break costs, and rates can decrease if the market shifts. A fixed rate locks in certainty for one to five years, protecting you if rates rise but restricting your ability to refinance or adjust.
Many investors split their loan, fixing a portion for stability while keeping the rest variable for flexibility. On a $450,000 investment loan, you might fix $270,000 for three years and leave $180,000 variable. If rates drop, you benefit on the variable portion. If they rise, the fixed portion shields you from the full impact. The strategy depends on your risk tolerance and whether you value predictability or adaptability.
Calculating Investment Loan Repayments and Ongoing Costs
Your loan repayment is only part of the picture. Council rates, water rates, strata or body corporate fees, landlord insurance, property management, and maintenance all reduce your net rental income. A property returning $22,000 annually in rent might cost $8,000 in non-loan expenses before you even account for interest.
Vacancy rates matter too. A property vacant for three weeks annually loses roughly 6% of its rental income. If you've calculated your cash flow assuming full occupancy, a longer vacancy period creates immediate pressure. Building a buffer of three to six months' expenses gives you room to handle repairs or tenant turnover without financial stress.
Calculating investment loan repayments accurately means including every cost, not just the mortgage. Online calculators show loan repayments, but they don't account for stamp duty, LMI, legal fees, or the ongoing expenses that eat into your passive income. We help clients model the full financial picture before committing to a purchase.
Whether you're buying your first rental property or expanding an existing portfolio, having someone walk through your borrowing options and repayment structures makes the difference between a property that supports your goals and one that drains your resources. Call one of our team or book an appointment at a time that works for you, and we'll look at your numbers together.
Frequently Asked Questions
How much deposit do I need for an investment property loan?
Most lenders require at least a 10% deposit for an investment property, though a 20% deposit avoids Lenders Mortgage Insurance and often secures better interest rates. You can also use equity from an existing property instead of cash savings.
What is negative gearing and how does it work?
Negative gearing occurs when your rental property expenses exceed your rental income. You can claim this loss against your other taxable income, which reduces the overall tax you pay each year.
Should I choose interest only or principal and interest repayments?
Most property investors choose interest only repayments for the first one to five years because it keeps monthly costs lower and maximises tax deductions. The loan converts to principal and interest after the interest only period ends unless you renegotiate.
How much rental income do lenders count toward borrowing capacity?
Lenders typically include around 80% of your expected rental income when calculating how much you can borrow. This adjustment accounts for vacancy periods and maintenance costs that reduce your net rental returns.
Can I use equity from my home to buy an investment property?
Yes, you can leverage equity from an existing property to fund a deposit on an investment property. Lenders typically allow you to borrow up to 80% of your home's value, with the difference available for investment purposes.
