Renting Out Part of Your Home? Here’s How the ATO Expects Deductions to Be Apportioned
Claiming deductions without risking an ATO review
Renting out part of your home is a common strategy for business owners and property investors, yet deduction claims in these arrangements often attract scrutiny. The ATO’s draft PCG 2025 D6 provides clear direction on how rental property deductions should be apportioned when a property is used for both rental income and private living.
When part of a dwelling is rented and the rest is owner occupied, only the portion connected to income producing use is allowable. The ATO expects deductions to be calculated using a fair and reasonable basis in line with section 8 1 of the ITAA 1997.
What the ATO considers fair and reasonable
PCG 2025 D6 outlines practical methods the Commissioner accepts in common situations. Applying one of these methods places property owners within the guideline’s compliance comfort zone.
- Time based apportionment
This method allocates deductions according to how long part of the property is rented. A spare room rented for six months of the year allows related expenses to be claimed for that rental period only. - Area based apportionment
This approach uses the proportion of the home dedicated to rental activity. If one bedroom and bathroom represent 25 percent of the total floor area, eligible expenses are apportioned to that percentage. - Combining time and area
Many modern rental arrangements suit a blended approach. Short stay rentals or seasonal leasing often require deductions to be split based on both floor area and actual rental days.
- Time based apportionment
Common expenses that require apportionment include interest on loans, council rates, water charges, insurance, repairs, maintenance, and asset decline in value.
Real world insight from an advisory perspective
In practice, the ATO focuses on logic, consistency, and evidence. A business owner renting out a self contained studio attached to their home can apply an area based method supported by a floor plan and clear expense records.
Short stay accommodation provides another example. Booking calendars paired with a combined time and area method align closely with PCG 2025 D6 and help reduce compliance risk.
Alternative apportionment methods are permitted, yet they sit outside the protection of the guideline. In these cases, the property owner must clearly demonstrate how their approach meets the fair and reasonable standard.
Why this matters for rental property owners
Search interest in rental property deductions Australia, ATO apportionment rules, PCG 2025 D6, and tax deductions for rental income continues to grow as compliance activity increases. Following accepted methodologies and maintaining strong records places property owners in a confident position.
Get clarity with Aero Accounting Group
Rental property deductions demand accuracy and informed judgement. Aero Accounting Group works closely with business owners and property investors to apply ATO guidance with confidence.
If you rent out part of your home and want certainty around your deduction claims, connect with Aero Accounting Group. Book a consultation, share this article with your network, or speak with our team to ensure your approach aligns with PCG 2025 D6 and reflects trusted professional advice.
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Not sure if your current accountant is a good long-term fit? Contact us at Aero Accounting Group today and we’ll help you minimise your taxes and maximise your profits
