Avoid These 7 Investment Loan Mistakes in 2027

The rules around property investment loans changed on Budget night, and the implications reach well beyond what most commentary has covered.

If you operate a business and you're weighing up whether to expand your property portfolio, the choices you make in the next few months will determine whether you retain full negative gearing benefits and the 50% capital gains discount or fall under the new restricted arrangements from 1 July 2027. That distinction affects serviceability, tax planning, and the way lenders assess your application.

Buying Established Property After 12 May 2026 Without Considering the CGT Impact

Established residential properties purchased after Budget night will no longer qualify for the 50% CGT discount from 1 July 2027. Instead, you'll pay a minimum 30% tax on capital gains, with indexation applied to the cost base. The change only applies to gains that accrue after 1 July 2027, so the portion of any gain already realised by that date remains under the old rules.

Consider a business owner who settles on an established investment property in August 2026. Any capital appreciation between settlement and 30 June 2027 will still benefit from the 50% discount when the property is eventually sold. From 1 July 2027 onwards, gains are subject to the new minimum 30% tax, indexed for inflation. If you're comparing an established property to a new build, the new build allows you to choose between the 50% discount and the new arrangements, giving you flexibility depending on which structure delivers a lower tax outcome.

This changes the conversation around hold periods and exit strategy. Longer hold periods traditionally favoured the 50% discount. Now, if you're buying established stock after Budget night, inflation indexation may deliver a comparable or lower taxable gain depending on the rate of inflation over the hold period, but the minimum 30% tax floor means high-growth scenarios are taxed more heavily than they would have been under the previous rules.

Assuming Negative Gearing Still Works the Same Way It Did Last Year

From 1 July 2027, rental losses on established residential properties acquired after 12 May 2026 can only be offset against rental income or residential capital gains. You can no longer deduct those losses against your business income, salary, or other non-property income sources. Losses that exceed your rental income in a given year can be carried forward indefinitely and used against future rental income or capital gains, so the deduction is deferred rather than lost.

For small business owners with variable income, this removes a layer of tax planning flexibility. In a strong trading year, you previously had the option to use rental losses to reduce assessable income. Under the new rules, those losses sit on the shelf until you generate enough rental income or sell a residential property. That doesn't make property investment unviable, but it does mean you need to model cashflow differently and ensure you can service the loan without relying on immediate tax relief.

If you're planning to acquire multiple properties over time, the timing of those purchases now determines which ones remain fully deductible and which ones fall under the new restricted rules. Properties acquired before Budget night retain full negative gearing, so there's a clear delineation in your portfolio between grandfathered assets and new acquisitions.

Choosing the Wrong Loan Structure Because You Haven't Modelled the New Tax Treatment

Interest-only loans remain a common choice for investors because they maximise tax-deductible interest and preserve cashflow. Under the revised negative gearing rules, interest-only structures still make sense if you're buying a new build or if you acquired the property before 12 May 2026. If you're buying established property after that date, the inability to offset losses against non-property income means you need to be confident the rental yield can cover most of the interest, or you'll be carrying the shortfall out of taxed income without immediate relief.

In a scenario where a business owner purchases an established property in late 2026 with a loan of $600,000 at a variable interest rate, interest-only repayments might sit around $2,500 per month. If rental income is $2,200 per month, the $300 monthly shortfall can't be claimed against business income from 1 July 2027. That $3,600 annual loss is carried forward, not deducted in the current year. If your business income fluctuates and you were counting on that deduction to reduce your tax liability in high-income years, you'll need to revise your assumptions.

Switching to principal and interest repayments doesn't solve the problem, but it does start building equity from day one, which may be relevant if your strategy involves leveraging that equity for future purchases. The right structure depends on your income profile, your tolerance for holding costs, and whether you're prioritising cashflow or equity accumulation. An investment loan structured around the old tax settings won't perform the way you expect under the new rules.

Underestimating How Lenders Will Assess Rental Income on New Acquisitions

Lenders already apply a haircut to rental income when calculating serviceability, typically assessing around 80% of the actual rent to account for vacancy periods and maintenance costs. The removal of full negative gearing doesn't change how lenders assess the loan itself, but it does change the after-tax cost of holding the property, which affects your overall financial position and your ability to service additional debt.

If you're applying for a loan on an established property purchased after Budget night, the lender won't factor in the tax benefit of offsetting rental losses against your business income from 1 July 2027 onwards, because that benefit no longer exists. In practical terms, that means your surplus income after all commitments needs to be sufficient to cover the shortfall without relying on a tax refund to bridge the gap. If you've structured your finances around receiving a refund each year from negatively geared properties, that assumption needs to be revisited for any new acquisitions.

Lenders will continue to assess borrowing capacity based on your declared income, existing debts, and living expenses, but the loss of immediate negative gearing deductions means your actual cashflow position may be tighter than it appears on paper. That's particularly relevant if you operate a business with variable income and you've historically relied on rental losses to smooth out tax liabilities across the year.

Ignoring the Opportunity Cost of Buying Established vs New Build

New builds acquired after Budget night retain both the 50% CGT discount and full negative gearing. If you're deciding between an established property and a new build, the tax treatment alone can justify a premium on the new build, depending on your hold period and expected capital growth.

A new build typically offers lower rental yield than established stock in the same area, but the ability to choose between the 50% CGT discount and cost base indexation when you sell gives you flexibility to optimise your tax outcome based on the actual growth rate and inflation over the hold period. The full deductibility of rental losses also means you retain the cashflow benefit of offsetting those losses against your business income.

The trade-off is upfront cost and depreciation. New builds generally carry higher purchase prices relative to land value, but they also generate stronger depreciation deductions in the early years, which can offset some of the rental yield shortfall. If your primary goal is capital growth and you're planning a hold period of ten years or more, the tax advantages of a new build under the revised rules may outweigh the lower yield. If you're focussed on cashflow and you're prepared to accept the new CGT and negative gearing treatment, established property may still deliver a stronger net return depending on the specific asset.

Applying for an Investment Loan Without Separating Business and Personal Debt

Small business owners often have a mix of business debt, personal debt, and investment property debt across multiple facilities. Keeping these separated is critical for tax purposes, and it becomes even more important under the new rules where rental losses can only be offset against specific income types.

If you're refinancing or consolidating debt, avoid blending investment loan funds with personal or business borrowings in the same facility. The ATO requires clear separation to allow you to claim interest as a deduction, and any portion of a loan used for private purposes is not deductible. In a scenario where you draw down on an investment loan to fund business working capital, the interest on that portion is no longer claimable as an investment expense, and you lose the ability to carry forward that component of the loss against future rental income.

Lenders are generally comfortable with business owners holding multiple loans across different purposes, but your application needs to demonstrate that each facility is clearly tied to a specific purpose. If you're planning to use equity from your home to fund a deposit on an investment property, the loan secured against your home is still deductible as an investment expense, provided the funds are used exclusively for the investment purchase. Documentation matters, and lenders will ask for clarity on how the funds are being deployed. An investment loan refinance is an opportunity to clean up your structure and ensure each facility is optimised for its intended purpose.

Not Speaking to a Tax Adviser Before Finalising the Purchase

The intersection of tax law and lending strategy is too complex to navigate without specialist input. The changes to CGT and negative gearing don't just affect the tax you pay when you sell or the deductions you claim each year. They affect how lenders assess your serviceability, how you structure your loans, and whether a particular property makes sense within your broader financial position.

A tax adviser can model different scenarios based on your business income, your existing property portfolio, and your intended hold period. They can also advise on whether it makes sense to bring forward a purchase before 1 July 2027 to lock in the old rules for the portion of any gain that accrues before that date, or whether it's worth waiting to assess market conditions once the new regime is in place.

From a lending perspective, we regularly see business owners who've made an offer on a property without considering how the tax treatment will affect their capacity to service the loan or their overall cashflow position. By the time they come to us for finance, the contract is signed and the options are limited. The alternative is to engage a broker and a tax adviser at the same time, model the numbers, and make sure the property and the loan structure align with your actual goals.

Call one of our team or book an appointment at a time that works for you. We'll work through your situation, model the cashflow under the new tax rules, and connect you with the right investment loan options for your circumstances.

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