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Owning a rental property in Perth can be one of the most effective ways to build long-term wealth – but at tax time, most landlords either underclaim or get something wrong that wouldn’t survive a closer look. Rental properties sit high on the ATO’s compliance radar every year, and the rules shifted again in 2026.
This guide covers exactly what counts as an investment property tax deductions Perth landlords can claim, the ones most commonly missed, and the mistakes that tend to draw ATO attention – all broken down in a format you can quickly check your own return against.
Property investors are one of the ATO’s most closely monitored taxpayer groups, not because landlords are more likely to do the wrong thing deliberately, but because rental property tax rules are genuinely complex. The ATO’s own residential rental properties guidance sets out exactly what’s expected, but between depreciation schedules, apportionment, loan structuring, and the recent 2026 rule changes, it’s easy to either miss a legitimate deduction or accidentally claim something incorrectly. Whether you own a single unit in Fremantle or a growing portfolio across the northern suburbs, the fundamentals below apply the same way.
Investment property tax deductions are the expenses you’re legally allowed to subtract from your rental income before working out how much tax you owe. If your deductible expenses exceed your rental income, the property is negatively geared, and the shortfall can offset other income – subject to rules that changed with the 2026 Federal Budget (more on that shortly).
Broadly, deductions fall into three categories:
| Category | Examples | Timing |
| Immediate deductions | Interest, rates, repairs, insurance | Claimed in full the year incurred |
| Deducted over time | Borrowing costs, capital works | Spread over several years |
| Depreciating assets | Carpets, appliances, hot water systems | Claimed based on effective life |
Getting the category right matters just as much as knowing the deduction exists – claiming something in the wrong category is one of the most common reasons the ATO adjusts a return.
Most landlords know these basics. Where the real value gets lost is in the deductions below – the ones that require a bit more documentation or a trained eye to catch. This is exactly where a property tax accountant earns their fee many times over, particularly on properties that have been held for several years without a proper review.
1. Borrowing costs :- loan establishment fees, lender’s mortgage insurance, and broker fees, spread over five years or the loan term. On a typical $500,000 loan, this can easily add up to a deduction worth several hundred dollars a year that many landlords simply forget to claim past the first year.
2. Depreciation on plant and equipment :- blinds, carpets, air conditioning, and hot water systems, calculated via a formal schedule. These items decline in value separately from the building, and without a schedule, most landlords have no accurate figure to work with at all.
3. Capital works deductions :- the building’s construction cost and structural renovations, claimed over an extended period. This is frequently the single largest deduction available on a rental property, yet it’s routinely skipped entirely without professional advice.
4. Pre-tenancy holding costs :- interest and rates incurred while the property is genuinely available for rent, even before a tenant signs on. Many first-time landlords wrongly assume nothing is deductible until rent actually starts flowing in.
5. Special body corporate levies :- one-off capital improvement levies, claimed as capital works rather than an immediate deduction. Getting this categorisation wrong is a common reason strata-titled property claims get adjusted.
6. Travel connected to property management in :- limited, specific circumstances, such as travel directly tied to arranging urgent repairs – though the rules here are stricter than they once were.
7. Lease document preparation costs :- including fees for drawing up a new lease or renewing an existing one with a returning tenant.
8. Bank fees :- charged specifically on the account used to manage rental income and expenses, which are easy to overlook when reconciling records at tax time.
9. Depreciation on a second-hand property’s original fittings :- where eligible under current rules – this varies depending on when the property was purchased and requires careful checking.
10. Legal fees :- connected to evicting a non-paying tenant or preparing lease agreements, which are deductible even though many landlords assume legal costs sit outside normal rental deductions.
Without a depreciation schedule from a quantity surveyor, at least four of these ten are almost impossible to claim accurately – which is why so many landlords leave genuine deductions unclaimed year after year, sometimes for the entire time they own the property.
This distinction causes more ATO adjustments than almost any other rental property issue.
| Aspect | Repairs | Improvements |
| Definition | Restoring something to its original condition | Upgrading or replacing beyond original condition |
| Example | Fixing a broken tap, patching a wall | New kitchen, room extension, full re-roof |
| How it’s claimed | Immediate deduction | Depreciated over time as capital works |
| Common mistake | Claiming a full improvement as a repair | – |
Quick test: if the work fixes existing damage or wear, it’s usually a repair. If it makes the property better than it was originally, it’s an improvement – and needs to be spread out rather than claimed all at once.
If you’ve sold or inherited a rental property, the rules shift again – our full breakdown of CGT on Inherited Property covers cost base adjustments most beneficiaries get wrong. And if you’re an Australian living overseas with property here, working with an expat tax accountant is essential, since residency status changes both your deductions and your CGT treatment. It’s also worth reviewing the full range of expat tax deductions available beyond the property itself, since these are frequently missed.
Getting your investment property tax deductions right in Perth isn’t about claiming more – it’s about claiming everything you’re legitimately entitled to, correctly categorised, with the paperwork to back it up. Between depreciation schedules, loan apportionment, and the upcoming 2027 changes, this is rarely a “set and forget” area of your tax return.
If you’re weighing up professional help, it’s worth understanding the cost to hire tax accountant services in Perth typically charge – for most investors, the deductions found more than cover the fee. And if your finances extend beyond a single rental property, a business advisor Perth property investors rely on can help make sure your whole financial picture works together.
Not sure your rental property return is capturing everything you’re entitled to? Speak with our team about a property tax review before you lodge this year.
