Investment Loans and What Not to Do When Rentvesting

Rentvesting lets you participate in the property market while renting where you want to live.

The strategy is straightforward: buy an investment property in a location you can afford, continue renting where you want to be, and let rental income offset the mortgage. For Canberra renters looking at their first property purchase, rentvesting can make sense when buying locally means compromising on location or overstretching your deposit. However, the success of the approach depends entirely on how you structure the investment loan and which property you choose.

Not Structuring for Negative Cash Flow

An investment property can generate a loss even when the rental yield looks adequate on paper. Your investment loan repayments include principal and interest, but rental income rarely covers both in full, particularly in the first few years. When you add body corporate fees, council rates, insurance, property management and periodic maintenance, the gap between income and outgoings widens.

Consider a buyer who purchases a two-bedroom apartment in a regional centre with a rental yield of 5 per cent. The loan is structured as principal and interest from day one. Rental income covers roughly 70 per cent of the mortgage repayment, leaving the investor to contribute several hundred dollars each week from their after-tax salary. They assumed tax deductions would close the gap, but deductions reduce taxable income, they do not provide cash in hand. Within six months, the ongoing shortfall becomes unsustainable.

Structuring the loan as interest-only for an initial period reduces the weekly repayment and narrows the cash flow gap. While you are not paying down the loan balance during the interest-only term, you retain more cash each month to cover holding costs or build a buffer for vacancies. Tax deductions for interest and other holding costs apply regardless of whether the loan is interest-only or principal and interest. An interest-only loan is not suitable for every investor, but it is a tool worth understanding when negative cash flow is likely.

Ignoring the Debt-to-Income Limit When Structuring Multiple Loans

From 1 February this year, lenders can only approve up to 20 per cent of new investor loans to borrowers with a total debt-to-income ratio of six times or more. If your total borrowing across all loans is six times your gross annual income or higher, you fall into a restricted pool. Not every lender will have capacity to approve you in that quarter, and your application may be declined even when serviceability calculations say you can afford the repayment.

This matters for Canberra renters who already carry a car loan or personal debt and are applying for their first investment loan. If your gross household income is $120,000 and your proposed investment loan is $600,000, you are already at the threshold before any other debt is counted. Add a $30,000 car loan and your total debt is now 5.25 times income, which leaves limited room for future borrowing. If you later want to refinance, upsize, or add a second investment property, you may find yourself unable to access new credit without first paying down existing debt.

The debt-to-income limit applies separately to investor lending and owner-occupier lending, but both limits assess your total debt, not just the loan you are applying for. Structuring your first investment loan with a realistic borrowing capacity assessment and minimising non-housing debt before you apply will keep you below the threshold and preserve your ability to grow your portfolio.

Choosing a Property Based on Affordability Alone

Buying the most affordable property you can find does not guarantee rental demand or capital growth. Regional towns with low entry prices can also have high vacancy rates, limited tenant pools, and slow or negative price movements. If the property sits vacant for months at a time, you carry the full loan repayment and all holding costs without any rental income.

In our experience, investors drawn to sub-$300,000 properties in regional areas often overlook the fundamentals that drive tenant demand: employment hubs, transport links, schools, and amenities. A property that is cheap to buy is often cheap for a reason, and it may not generate the passive income or capital growth you are relying on. For Canberra-based investors, this can mean looking at towns within a two-hour radius that have stable employment, such as regional centres with hospitals, universities, or government offices, rather than chasing the lowest purchase price.

Rental yield and vacancy rates are published by some data providers, but those figures are backward-looking. A town that had low vacancy rates three years ago may have since lost a major employer. Before committing to a property, speak to local property managers in that area and ask about current tenant demand, average time on market, and rent collection issues. If multiple property managers give you similar feedback, that is more reliable than a national dataset.

Not Accounting for the Loss of First Home Buyer Concessions

When your first property purchase is an investment, you forfeit stamp duty concessions and first home owner grants that apply to owner-occupiers in most states and territories. In the ACT, first home buyers purchasing an owner-occupied property valued up to $1,455,000 receive a full or partial stamp duty exemption, depending on the purchase price. If your first purchase is an investment property, you pay full stamp duty regardless of the property value.

For a property purchased at $500,000 in the ACT, stamp duty is approximately $13,000. That cost is paid upfront at settlement and cannot be added to the loan. If you are already stretching your savings to cover the deposit and settlement costs, the additional stamp duty liability can push the transaction out of reach or force you to borrow at a higher loan-to-value ratio, which triggers Lenders Mortgage Insurance.

Rentvesting works when the rental income and potential capital growth outweigh the loss of first home buyer concessions. However, for buyers who plan to purchase an owner-occupied property within the next few years, it may be worth holding off on the investment purchase to preserve those concessions for the home you will live in. This is a calculation that depends on your timeline, your income, and the property market you are entering. Rentvesting with an investment loan is not always the optimal first step.

Overlending and Underestimating Holding Costs

Borrowing the maximum amount a lender will approve leaves no buffer for rate rises, tenant vacancies, or urgent repairs. Lenders assess your serviceability at a rate that is at least 3 percentage points above the actual loan product rate, but that buffer is a regulatory safeguard, not a personal financial plan. If rates rise, your actual repayment will increase, and rental income rarely rises in step.

Property investors also underestimate the frequency and cost of holding expenses. A hot water system replacement costs $1,500 to $2,500. Leaking roof repairs can exceed $5,000. Even routine items like repainting between tenants, pest control, and smoke alarm compliance add up. Body corporate fees for apartments in Canberra typically range from $1,000 to $3,000 per quarter, and special levies for building repairs or upgrades are common. If you have borrowed to your maximum capacity and have no offset or savings buffer, these costs force you to rely on credit cards or personal loans, which compounds the problem.

A prudent approach is to borrow 10 to 15 per cent below your maximum borrowing capacity and maintain a cash buffer of at least $10,000 in an offset account or separate savings account. That buffer covers emergency repairs, insurance excesses, and periods of vacancy without requiring you to draw on high-interest credit. It also gives you flexibility to take advantage of refinancing opportunities or rate discounts when they arise.

Using a Variable Rate Without Understanding the Offset Benefit

Most investors choose a variable rate investment loan for flexibility, but they do not link the loan to an offset account. Rental income from the investment property is assessable income, and if that income sits in a transaction account that is not linked to your loan, you pay tax on it while also paying interest on the full loan balance.

An offset account linked to your investment loan allows you to park rental income, salary, and other cash in a transaction account that offsets the loan balance for interest calculation purposes. If your loan balance is $500,000 and you have $20,000 in the offset, you pay interest on $480,000. Every dollar in the offset saves you interest at the loan rate, which is typically higher than any savings account interest rate you would earn elsewhere. Because the interest saving is a reduction in a non-deductible expense rather than assessable income, there is no tax payable on the benefit.

Not all lenders offer offset accounts on investment loans, and some charge a higher interest rate or annual fee for the feature. However, the interest saved usually exceeds the fee within the first year, particularly for investors with variable income or lumpy cash flow. Fixed rate loans do not offer offset accounts, which is one reason many investors split their loan between a fixed portion for repayment certainty and a variable portion with an offset for cash flow management.

Not Reviewing Your Loan Structure Before Negative Gearing Rules Change

From the 2027-28 income year, losses on established residential investment properties acquired after 12 May this year can only be offset against income from other residential properties, not against salary or wages. Excess losses are carried forward. Properties purchased before that date, and new builds purchased after that date, continue to allow full negative gearing against all income. The distinction is significant for investors relying on tax deductions to subsidise holding costs.

If you purchased an established investment property after 12 May and your rental loss is $8,000 per year, you can no longer deduct that loss against your salary from the 2027-28 income year onward. The loss is quarantined and carried forward until you have rental income or a capital gain on a residential property to offset it against. That changes the cash flow equation for rentvesting, because the tax refund you were relying on to cover the shortfall will not arrive.

This does not mean rentvesting is no longer viable, but it does mean the property must be closer to cash flow neutral from day one, or you must have sufficient after-tax income to carry the loss without a tax refund. Investment loan refinancing before the new rules take effect will not change the tax treatment of the property, because the tax outcome is determined by the property acquisition date, not the loan origination date. However, refinancing to a lower rate or switching to interest-only can reduce the size of the loss and make the strategy more sustainable under the new rules.

Failing to Separate Investment Debt from Personal Debt

Using the same loan or redraw facility for both your investment property and personal expenses will compromise your ability to claim interest deductions. The Australian Taxation Office requires a clear link between the borrowed funds and the income-producing asset. If you draw down on your investment loan to pay for a holiday or a car, the interest on that portion of the loan is not deductible, even though the loan is secured against the investment property.

Keeping investment debt separate from personal debt means using a standalone loan for the property purchase and avoiding redraw or further advances for non-investment purposes. If you need to access funds for personal use, draw them from an owner-occupier loan, offset account, or line of credit that is not linked to the investment property. This preserves the deductibility of the full investment loan interest and simplifies your tax reporting.

Call one of our team or book an appointment at a time that works for you. We work with Canberra renters who are structuring their first investment loan and want to avoid the traps that reduce rental income, increase holding costs, or limit future borrowing capacity.

Frequently Asked Questions