Koste Chartered Quantity Surveyors 1300 669 400  |  info@koste.ai

Accountants · Koste Knowledge Base

What is the ATO's Audit Focus for Rental Property Deductions?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

The ATO's audit focus for rental property deductions includes ensuring claims are substantiated, particularly around interest expenses, repairs, and depreciation. They scrutinise for over-claimed deductions and incorrect classifications, focusing on compliance with Divisions 40 and 43 of ITAA 1997.

The ATO has sharpened its focus on rental property deductions, recognising this as an area where compliance issues frequently arise. They are particularly vigilant in scrutinising claims related to interest expenses, repairs, and depreciation, ensuring these are substantiated and accurately represented according to the tax legislation.

Under Division 40 of ITAA 1997, the ATO examines deductions for plant and equipment, ensuring investors do not claim depreciation on second-hand assets acquired post-9 May 2017, unless grandfathered. Division 43 covers capital works deductions, where the ATO checks if claims align with the building's construction date and the appropriate depreciation rates. A common misconception is that all property expenses are deductible immediately, but the ATO differentiates between repairs and improvements, the latter needing to be capitalised.

To see how this plays out, consider a 2010-built 3-bedroom house in Perth purchased for $750,000. Suppose the owner claims interest deductions on a loan used to purchase the property. The ATO will scrutinise whether the loan was indeed used for income-producing purposes. If the owner also claims repairs, the ATO will differentiate between repairs (deductible immediately) and improvements (depreciated over time). At a 37% marginal tax rate, correctly classifying and claiming deductions could save the owner $5,000 in taxes annually.

In our experience reviewing thousands of properties across Australia, we often find that investors overlook the importance of maintaining thorough records. Another frequent issue is misclassifying capital improvements as repairs, leading to incorrect immediate deductions. Many investors are unaware of the need to adjust depreciation schedules for assets disposed of or no longer in use. Additionally, interest deductions are often incorrectly claimed for personal portions of loans. Lastly, we notice a lack of understanding of how to apportion deductions for properties used partially for private purposes.

The answer can differ depending on your situation. For properties acquired after 9 May 2017, claiming depreciation on second-hand plant and equipment is restricted. Pre-1987 buildings have different capital works eligibility. Joint ownership means deductions must be apportioned according to ownership interest. If a property is used for both rental and private purposes, deductions need careful apportionment. Commercial properties follow different rules, particularly regarding capital works deductions.

Given the complexities, professional advice is crucial. A Chartered Quantity Surveyor can ensure depreciation schedules are accurate and compliant, while an accountant can provide guidance on the correct apportionment of expenses and ensure all claims are substantiated.

  • Review your rental property expenses and ensure all claims are substantiated.
  • Consult a Chartered Quantity Surveyor for an accurate depreciation schedule.
  • Verify that interest deductions are only claimed for the income-producing portion of loans.
  • Ensure repairs are not misclassified as improvements.
  • Keep detailed records of all income and expenses related to the property.
  • Work with an accountant to ensure compliance with ATO requirements.
  • Frequently Asked Questions

    What areas does the ATO scrutinise in rental property audits?

    The ATO focuses on interest deductions, repair vs. improvement classification, depreciation claims, and the apportionment of expenses for properties with mixed use.

    How can I ensure my rental property deductions are compliant?

    Maintain detailed records, ensure repairs are correctly classified, verify loan usage for interest claims, and consult a QS for depreciation schedules.

    What are the rules for claiming depreciation on second-hand properties?

    Properties acquired after 9 May 2017 cannot claim depreciation on second-hand plant and equipment unless grandfathered.

    How do state-specific laws affect rental property deductions?

    While federal tax laws apply nationwide, local council rates and state-based levies can impact overall property expenses and should be accounted for separately.

    How do I report rental property deductions on my tax return?

    Use the rental property schedule in your tax return to detail income and expenses, ensuring all claims are backed by records and comply with ATO guidelines.

    Related Articles

    Read Full Article Free Calculator
    ATO auditrental property deductionstax compliancedepreciationproperty investment

    Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai