Avoid These 7 Mistakes When Buying Rental Property

Self-employed small business owners face tighter scrutiny when applying for an investment loan than wage earners.

Lenders apply a different set of rules to business income, and the new debt-to-income caps introduced in February have made serviceable borrowing power even more sensitive to how you present your financials. A rental property purchased with the wrong loan structure or without advance tax planning can cost tens of thousands in unnecessary interest, lock you out of future portfolio growth, or leave you exposed when negative gearing rules change in July next year. Getting the application right from the start requires understanding not just what lenders will approve, but how the loan interacts with your tax position, cash flow, and long-term wealth strategy.

Mistake 1: Applying Without Clean Financials

Lenders assess self-employed borrowers using tax returns, business activity statements, and often a profit and loss statement prepared by an accountant. If your most recent financial year shows lower income due to legitimate deductions or business reinvestment, your borrowing capacity will reflect that lower figure regardless of how strong your cash flow actually is. The serviceability buffer of 3 percentage points above the loan rate, combined with debt-to-income caps that limit some lenders to six times your income, means even a modest reduction in declared income can shrink your maximum loan amount by $100,000 or more.

Consider a buyer who runs a consulting business in the Inner West and wants to purchase a rental unit. Their actual revenue is consistent, but their most recent tax return shows taxable income of $95,000 after claiming vehicle expenses, home office deductions, and superannuation contributions. A lender calculates serviceability on that $95,000 figure, and with existing business debts and personal expenses, the approved loan amount falls $80,000 short of what they need. If the same buyer had worked with their accountant six months earlier to structure the prior year's return with investment borrowing in mind, they could have deferred certain discretionary deductions and increased their declared income without materially affecting their tax outcome.

We regularly see self-employed applicants who assume lenders will look at bank statements or adjust for add-backs. They do not. The assessment starts with what you declared to the ATO, and if that figure is low, your options narrow quickly.

Mistake 2: Ignoring the July 2027 Negative Gearing Changes

Properties purchased after 12 May 2026 that are not eligible new builds will be subject to quarantined losses from 1 July 2027. Rental losses from these properties can only be offset against other residential rental income or carried forward to offset future rental income or capital gains. They cannot be offset against your salary, business income, or other assessable income.

If you are buying an established apartment in Parramatta or Chatswood today, any rental shortfall from July next year onward will not reduce your overall tax bill unless you own other positively geared rental properties. For a self-employed buyer in a higher tax bracket, that changes the after-tax cost of holding the property and the cash flow required to service the loan. A $600,000 investment loan at current variable rates on interest-only terms requires roughly $2,400 per month in interest payments. If the property rents for $2,200 per month, the $200 shortfall previously delivered a tax benefit of around $90 per month for someone on the second-highest marginal rate. From July next year, that benefit disappears unless you have other rental income to offset it against.

Buyers who want access to traditional negative gearing should either settle before 30 June next year on a property already under contract, or focus on eligible new builds that remain exempt from the quarantine. The definition of eligible new build is narrow: it must be a dwelling constructed on previously vacant land, or a development that increases the total number of dwellings on the site. A knock-down rebuild that replaces one house with one house does not qualify, even if the new dwelling is brand new.

Mistake 3: Choosing the Wrong Loan Structure

The two most common structures for investment loans are interest-only and principal-and-interest repayments. Interest-only terms typically run for five years, after which the loan reverts to principal and interest unless you reapply for a further interest-only period. The appeal is lower monthly repayments and, under current rules, full deductibility of the interest. The risk is that you build no equity through repayments, and if property values do not rise or rental income does not cover the higher principal-and-interest repayment when the term expires, you may face cash flow pressure or be forced to refinance.

Principal-and-interest investment loans build equity from day one and often attract a slightly lower interest rate than interest-only products. The trade-off is higher monthly repayments and less cash available for other investments or business expenses. For a self-employed buyer, cash flow consistency matters more than it does for a salaried employee. If your business income fluctuates or you carry seasonal revenue risk, locking in a higher repayment can create stress during leaner months.

We also see buyers who take an interest-only loan without a clear plan for the equity build or reversion date. In a scenario like this, an investor purchases a townhouse in Ryde with a 20 per cent deposit and sets the loan to interest-only for five years. At the end of that period, the loan balance is unchanged, and the property has appreciated modestly. The lender agrees to extend interest-only for another two years, but at year seven the loan converts to principal and interest. The repayment jumps from $2,100 per month to $3,200, and the rental income has not kept pace. The investor is forced to either sell, inject cash from the business, or refinance at a higher loan-to-value ratio and wear the cost of Lenders Mortgage Insurance a second time.

Mistake 4: Underestimating the True Cost of Holding the Property

Rental income rarely covers all the costs of an investment property in the first few years, especially in Sydney where vacancy rates in some areas have tightened but body corporate fees, council rates, and strata levies remain high. When you apply for an investment loan, the lender will assess serviceability by taking the gross rental income and applying a shading factor, usually 20 per cent, to account for vacancy and management costs. They do not account for the full list of holding costs you will actually pay.

Those costs include:

• Interest on the loan
• Strata levies or body corporate fees, which in newer apartment buildings across the lower North Shore and inner city can run $1,500 to $3,000 per quarter
• Council and water rates
• Landlord insurance
• Property management fees, typically 5 to 7 per cent of the rent plus letting fees
• Repairs and maintenance
• Periods of vacancy between tenants
• Land tax, if your total landholdings exceed the threshold

A buyer who focuses only on whether the rent will cover the loan repayment often discovers six months after settlement that the actual shortfall is $400 to $600 per month higher than expected. For a self-employed buyer, that shortfall comes directly from business cash flow, and from July next year it will not deliver the same tax offset it does today.

Mistake 5: Maxing Out Borrowing Capacity on the First Property

Many investors approach their first purchase with the goal of borrowing as much as the lender will approve. The logic is that a higher loan amount means a more valuable property, and a more valuable property should deliver stronger capital growth. The problem with this approach is that it leaves no serviceability for a second investment loan in the near term.

Lenders assess each new application based on your current commitments, and every dollar of existing debt reduces how much you can borrow next time. Under the debt-to-income caps introduced this year, some lenders are restricted in how many loans above six times your income they can write. If you are self-employed and your declared income sits at $120,000, a loan above $720,000 may limit your options with certain lenders or require a higher deposit to stay within policy.

Investors who plan to build a portfolio over five to ten years will often buy a moderately priced property with a slightly larger deposit, leaving headroom in their serviceability to add a second or third property as equity builds. The alternative is to borrow to your limit on day one, wait several years for equity growth or income growth to restore your capacity, and lose the compounding benefit of earlier entry into the second property.

Mistake 6: Ignoring Loan Features That Support Portfolio Growth

Not all investment loan products are the same. Some lenders offer offset accounts on investment loans, others do not. Some allow you to split the loan between variable and fixed rates, others require you to choose one or the other. Some products include a redraw facility, which lets you access any extra repayments you have made, while others lock those funds away until the loan is refinanced or discharged.

For a self-employed investor, an offset account linked to your investment loan gives you a place to park business income or tax savings without reducing the deductible debt. The balance in the offset reduces the interest charged on the loan, but the loan balance itself remains unchanged, so your deductions are preserved. A redraw facility reduces the loan balance when you make extra repayments, which can complicate your tax position if you later withdraw those funds for private use.

Another feature that supports portfolio growth is the ability to increase your loan amount without a full refinance. Some lenders offer a pre-approved limit increase based on equity in the property, which can speed up the purchase of a second investment property or let you access funds for renovation without triggering a new application and valuation.

We work with self-employed buyers who want the flexibility to expand their portfolio as their business grows. Choosing the right loan product at the outset means fewer obstacles and lower costs when the time comes to leverage equity for the next purchase.

Mistake 7: Applying Without Specialist Advice on Self-Employed Income Assessment

Self-employed applicants are assessed differently depending on how long they have been in business, whether they are a sole trader or company director, and how much of their income is recurring versus project-based. A buyer who has been trading for 18 months will be assessed on a shorter track record than someone with three full years of tax returns, and some lenders will not consider business income at all until two years of returns are available.

If you operate through a company and take most of your income as dividends, the lender will assess the company's profit and apply a loading to account for the tax already paid at the company level. If you are a sole trader, the assessment is based on your individual taxable income plus any add-backs for depreciation and other non-cash deductions. The calculation varies between lenders, and the difference can be material.

In our experience, self-employed buyers who approach a bank directly often receive a lower pre-approval than they would with a broker who understands which lenders treat business income most favourably and how to structure the supporting documents. The difference between a lender who will add back 100 per cent of depreciation and one who adds back only 75 per cent can shift your maximum loan amount by $50,000 or more.

The other advantage of working with a broker is access to lender panels that include non-bank and specialist investment lenders. These lenders may offer higher loan-to-value ratios for investors, accept shorter trading histories, or provide more flexible serviceability treatment for buyers with multiple income streams. If you run a business, hold rental properties, and draw a mix of salary, dividends, and distributions, a specialist lender may give you a better outcome than a major bank applying a standardised policy.

Purchasing rental property while self-employed is not harder than doing so as an employee, but it does require more preparation and a clear understanding of how lenders assess your income, how the loan structure affects your tax position, and how changes to negative gearing and capital gains tax will affect your holding costs and returns. The buyers who succeed are the ones who plan twelve months ahead, work with their accountant to optimise their financials before applying, and choose a loan product that fits their long-term strategy rather than just the immediate purchase.

Call one of our team or book an appointment at a time that works for you. We work with self-employed buyers across Sydney who want to build wealth through property investment without the costly mistakes that come from applying without the right structure or advice.

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