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

Owning Property · Koste Knowledge Base

Can I Amend Old Tax Returns to Claim Depreciation I Missed?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Yes, you can amend old tax returns to claim missed depreciation, typically up to two years from the original notice of assessment. This can be done under the ATO's ruling on tax amendments, allowing you to potentially recover lost tax benefits. Consult your accountant for specifics.

Missing depreciation claims on your investment property can cost you significant tax savings. Fortunately, the Australian Taxation Office (ATO) allows you to amend your tax returns to include overlooked depreciation deductions. Generally, you have up to two years from the date of your original notice of assessment to make these amendments. This period can extend to four years for some taxpayers, such as small business entities.

Under the ATO's guidelines, depreciation falls under Division 40 of ITAA 1997 for plant and equipment and Division 43 for capital works. If you have missed these deductions, you can lodge an amendment request to include them, potentially recovering tax benefits you didn't initially claim. It's important to note that this process involves recalculating your taxable income for the relevant years and submitting the revised figures to the ATO.

To see how this plays out, consider a practical example. Imagine you own a 2009-built 2-bedroom apartment in Fortitude Valley, Brisbane, purchased for $700,000. You initially overlooked claiming depreciation on assets like air conditioning and carpets. By amending your past returns, you could include depreciation of $5,000 per annum. At a 37% marginal tax rate, this translates to a tax refund of $1,850 per year, significantly boosting your cash flow.

In our experience reviewing thousands of properties across Australia, many investors miss substantial deductions due to a lack of awareness or misunderstanding of eligible items. Often, they overlook assets like common area facilities in apartment buildings or fail to update their schedules after renovations. Additionally, some investors mistakenly believe that once a tax return is lodged, it cannot be changed, missing out on valuable amendments.

The answer can differ depending on your situation. For instance, if you acquired a second-hand property after 7:30 pm AEST on 9 May 2017, you cannot claim Division 40 depreciation on previously used plant and equipment. However, Division 43 capital works deductions remain unaffected. Similarly, if your property is held in a Self-Managed Super Fund (SMSF), different rules may apply regarding amendments and asset depreciation.

Given the complexities involved, it's crucial to seek professional advice. A Chartered Quantity Surveyor can provide a detailed depreciation schedule, ensuring all eligible deductions are captured. Coupled with your accountant's expertise, you can effectively amend your returns and optimise your tax position.

Here are practical steps you can take immediately:

  • Review your past tax returns and identify any years where depreciation was missed.
  • Consult a Chartered Quantity Surveyor to obtain a comprehensive depreciation schedule.
  • Work with your accountant to prepare amendment requests for the ATO.
  • Submit your amended returns within the allowable time frame.
  • Monitor the outcome and adjust your future tax planning accordingly.
  • Stay informed about any changes in tax legislation affecting depreciation.
  • Frequently Asked Questions

    How far back can I amend my tax returns for missed depreciation?

    You can generally amend your tax returns for up to two years from the date of the original notice of assessment. Some taxpayers, like small business entities, may have up to four years.

    Does the 2017 budget change affect my ability to amend returns?

    The 2017 changes affect claims on second-hand properties acquired post-9 May 2017, limiting Division 40 deductions. However, Division 43 claims remain unaffected and can still be amended.

    Are there state-specific rules for amending tax returns?

    While tax legislation is federal, state-specific considerations, such as stamp duty on property transactions, can affect the overall tax position. Consult a local tax advisor for state-specific advice.

    How do I reflect amended depreciation in my tax return?

    Your accountant will prepare an amendment request, recalculating your taxable income and submitting the revised figures to the ATO. Ensure your depreciation schedule is up-to-date.

    Is there a fee for lodging an amended return?

    The ATO does not charge a fee for lodging amended returns. However, professional fees may apply for services provided by your accountant or quantity surveyor.

    Related Articles

    Read Full Article Free Calculator
    tax depreciationamending tax returnsinvestment propertyATO guidelinesmissed deductions

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