Everything You Need to Know About Investment Loans

Buying an established investment property in NSW gives you rental income from day one and the potential to build wealth over time.

The landscape has shifted considerably. Changes to negative gearing rules, new debt-to-income limits, and a foreign buyer ban on established dwellings have all reshaped how investors approach property finance. If you're buying an established rental property, you need to understand how these changes affect your borrowing capacity, your tax position, and the loan structure that makes sense for your circumstances.

How Investment Loans Differ from Owner-Occupied Finance

Lenders treat investment borrowing differently because the property generates income but also carries vacancy risk. You'll typically face a higher interest rate than an owner-occupier, often between 0.30 and 0.60 percentage points above the equivalent owner-occupied rate. Lenders also cap the loan to value ratio at 80 per cent for most established property investors, meaning you'll need at least a 20 per cent deposit to avoid Lenders Mortgage Insurance. Serviceability is assessed on your current income, including rental income, minus all existing debts and living expenses, then tested at a rate three percentage points higher than the actual loan rate.

The debt-to-income cap introduced in February this year adds another layer. Lenders can only approve 20 per cent of their new investor loans at a DTI of six times or more, so if your total borrowing sits above six times your gross income, you may find some lenders less willing to proceed even if you meet all other criteria. In our experience, investors with strong rental yields and modest personal debt have more options than those relying heavily on leveraging existing equity.

Interest Only or Principal and Interest

An interest only investment loan lets you pay only the interest each month, keeping repayments lower and freeing up cash flow for other investments or living costs. The interest only period usually runs for one to five years, after which the loan reverts to principal and interest unless you renegotiate. This structure suits investors focused on maximising tax deductions and deploying capital elsewhere, because the interest you pay on an investment loan is deductible as long as the property is rented or genuinely available for rent.

Principal and interest repayments reduce your loan balance from day one, building equity faster and lowering the total interest paid over the life of the loan. If your goal is to own the property outright by retirement or you prefer the certainty of reducing debt, this repayment type offers that path. Many investors use a split approach, keeping part of the loan interest only to preserve cash flow while steadily paying down the rest.

Consider a buyer purchasing a two-bedroom unit in Parramatta as a rental property. Rental demand in the area is strong due to proximity to the CBD and the university precinct, with typical vacancy periods under two weeks. The investor structures 60 per cent of the loan on interest only and 40 per cent on principal and interest. The interest only portion maximises the deduction against rental income, while the principal and interest portion reduces the balance each year, giving the investor options to refinance or access equity as the loan matures.

Fixed Rate, Variable Rate, or a Split

A variable rate investment loan moves with the market, which means your repayments can rise or fall as the lender adjusts rates. You'll usually have access to features like offset accounts and the ability to make extra repayments without penalty, which can be valuable if your rental income fluctuates or you want flexibility to pay down the loan when cash flow allows.

Fixed rate products lock in your interest rate for a set period, typically one to five years. Your repayments stay the same regardless of what happens in the broader economy, making budgeting more predictable. The trade-off is that you'll forfeit flexibility, and if you need to exit the loan early or make large additional payments during the fixed period, you may face break costs.

A split loan combines both. You might fix half your borrowing to protect against rate rises and leave the other half variable to retain access to an offset or redraw. The right mix depends on your risk tolerance, your need for certainty, and whether you expect to make lump sum payments from rental income or other sources.

Negative Gearing and the Changes Coming in July Next Year

Negative gearing allows you to offset a rental loss against your other income, reducing your taxable income and the tax you pay each year. If your rental income is less than the interest, body corporate fees, insurance, and other claimable expenses, the shortfall can be deducted from your salary or business income under the current rules.

From 1 July 2027, that changes for most established properties purchased after 7:30pm on 12 May this year. Net rental losses on these properties will be quarantined, meaning you can only offset them against other residential rental income or carry them forward to offset future rental income or capital gains. You cannot offset the loss against your wage or business income. Properties you already own or had under contract before that date remain unaffected and continue under the existing negative gearing rules until you sell.

If you're considering an established property investment in NSW, this shift means you need rental income closer to covering your holding costs, or you need to be comfortable carrying the loss without an immediate tax benefit. The alternative is to buy an eligible new build, which retains full negative gearing and the current 50 per cent capital gains tax discount. However, new builds often come with a price premium and lower initial rental yields, so the decision isn't purely about tax treatment.

Using Equity to Fund Your Deposit

Many property investors use equity in their home or another property to fund the deposit and costs on the next purchase. Lenders will typically let you borrow up to 80 per cent of the value of your existing property, and the amount above your current loan balance becomes accessible equity. This strategy allows you to buy without saving a cash deposit, but it increases your overall debt and your monthly repayments, so serviceability becomes the limiting factor.

If you're releasing equity from an owner-occupied property to buy an investment, the portion of borrowing used for the investment is deductible, but only if the loan is structured correctly. Mixing investment and private purposes in a single loan account can erode your deduction. A broker can help you set up separate splits or loans so the interest on each portion is clearly linked to its purpose, preserving the full deduction on the investment component and avoiding issues if the ATO ever reviews your records. You can read more about using equity and refinancing to access it in a tax-effective way.

What Lenders Look at When Assessing an Investment Loan Application

Lenders assess your income, existing debts, living expenses, and credit history, then add 80 per cent of the expected rental income to your serviceability calculation. They stress test the loan at a rate three percentage points above the actual rate, so even if you're borrowing at 6.50 per cent, they assess whether you could afford repayments at 9.50 per cent. This buffer protects both you and the lender against rate rises, but it also means your borrowing capacity is lower than you might expect based on current repayments alone.

The debt-to-income cap affects about one in five new investor loans. If your total borrowing, including the new loan, exceeds six times your gross annual income, you may need a larger deposit, a co-borrower, or a lender outside their DTI allocation for that quarter. Some lenders also apply portfolio limits, capping the number of investment properties they'll finance for a single borrower regardless of income or equity.

Understanding your borrowing capacity before you start looking at properties can save time and help you focus on purchases that align with what lenders will actually approve, rather than what you think you can afford.

Costs Beyond the Deposit

Stamp duty is the largest upfront cost after your deposit. In NSW, duty on an established dwelling is calculated on a sliding scale, and there is no concession for investors. You'll also pay legal fees for conveyancing, building and pest inspection costs, and lender fees including application and valuation charges. If you're borrowing above 80 per cent of the property value, add Lenders Mortgage Insurance, which can run into thousands of dollars depending on your loan amount and deposit size.

Ongoing costs include council rates, water rates, body corporate fees if the property is in a strata scheme, landlord insurance, property management fees if you're using an agent, and maintenance and repairs. All of these are claimable expenses against your rental income, but they still need to be funded from your cash flow, particularly if the property sits vacant between tenants. The average vacancy rate varies by location, so factor in at least two to four weeks of vacancy per year when calculating whether the rental income will cover your costs.

Refinancing an Investment Loan

Interest rate discounts and loan features change over time. If you took out your investment loan several years ago, there's a reasonable chance you're now paying more than a new borrower would for the same product. Refinancing lets you move to a lender offering a lower rate, access equity for another purchase, or restructure your loan to interest only if your circumstances have changed.

Break costs apply if you're exiting a fixed rate loan before the fixed period ends, but if you're on a variable rate, you can usually refinance without penalty. Some lenders offer rate discounts or cash incentives to attract refinancing customers, which can offset the application and valuation costs of switching. A loan health check every couple of years helps you stay on top of whether your current loan still serves your goals or whether you'd gain from moving.

Choosing the Right Loan Structure for Your Strategy

Your loan structure should reflect whether you're buying for cash flow, capital growth, or a mix of both. If your priority is passive income to supplement your wage, a variable rate loan with an offset account and principal and interest repayments gives you flexibility and reduces debt over time. If you're focused on portfolio growth and plan to buy multiple properties, interest only repayments and a split between fixed and variable can preserve cash flow and let you deploy capital into the next deposit.

Access to investment loan options from banks and lenders across Australia means you're not limited to the big four. Regional banks, mutuals, and non-bank lenders often have different risk appetites, lower fees, or features that suit investors with multiple properties or complex income structures. Working with a broker gives you access to that full panel and the ability to match your circumstances to the lender most likely to approve your loan at a rate that works.

If you're ready to explore your options or want to understand how the recent regulatory and tax changes affect your specific situation, call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions