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How Does Joint Ownership Affect Depreciation Allocation?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

In joint ownership, depreciation is allocated based on each owner's legal interest in the property. Under **Division 40 and Division 43 of ITAA 1997**, each owner claims depreciation in proportion to their ownership percentage. This ensures compliance with tax regulations and maximises tax deductions.

When a property is jointly owned, the allocation of depreciation claims can become a nuanced process. The key is to ensure that each owner claims their rightful share of depreciation based on their legal interest in the property. This approach aligns with the Australian Taxation Office's guidelines under Division 40 and Division 43 of ITAA 1997.

In essence, each co-owner of a property must claim depreciation deductions in proportion to their ownership interest. This means if you own 50% of a property, you can claim 50% of the property's depreciation deductions. The most common misconception here is that all joint owners can equally split the depreciation regardless of their actual ownership percentage, which is incorrect and can lead to compliance issues with the ATO.

To see how this plays out, consider a practical example. Imagine a 2015-built 3-bedroom house in Bondi, Sydney, purchased for $1.2 million. The property is equally owned by two investors, each holding a 50% share. The total available depreciation for the first year, combining Division 40 plant and equipment and Division 43 capital works, is $15,000. Each owner can claim $7,500 as their depreciation deduction. At a 37% marginal tax rate, this results in a tax saving of $2,775 per owner for that year.

In our experience reviewing thousands of properties across Australia, we often see investors failing to adjust depreciation claims when ownership percentages change, such as when one owner buys out another's share. Another common oversight is not updating the ownership structure in their tax records after refinancing, which can alter the ownership stakes. Additionally, co-owners sometimes neglect to coordinate their claims, resulting in double claims or missed opportunities.

The answer can differ depending on your situation. For instance, if the property was acquired after 7:30pm AEST on 9 May 2017, and it is a second-hand residential property, the ability to claim Division 40 depreciation on previously used plant and equipment is restricted. However, Division 43 capital works deductions remain unaffected. Similarly, properties held within a Self-Managed Super Fund (SMSF) or with different ownership structures such as tenants in common versus joint tenants may have unique implications on how depreciation is calculated and claimed.

Given the complexity involved and the potential for errors, it's advisable to consult both a Chartered Quantity Surveyor and an accountant. A Quantity Surveyor can provide a detailed depreciation schedule that accurately reflects each owner's entitlement, while an accountant ensures that these figures are correctly integrated into the tax return, considering any changes in ownership structure or tax legislation.

  • Review your current ownership structure and ensure it is correctly reflected in your tax records.
  • Obtain a detailed depreciation schedule from a Chartered Quantity Surveyor to understand your share of depreciation.
  • Consult with your accountant to ensure accurate allocation of depreciation in your tax return.
  • Update your records promptly if there are changes in ownership percentages or property use.
  • Stay informed about legislative changes that may affect your depreciation claims.
  • Regularly review your investment strategy and ownership structure to maximise tax benefits.
  • Frequently Asked Questions

    How does joint ownership affect tax returns?

    Each co-owner must report their share of rental income and claim their portion of deductions, including depreciation, based on their ownership percentage. This ensures compliance with ATO regulations.

    Can depreciation be claimed equally by all owners?

    No, depreciation must be claimed in proportion to each owner's legal interest in the property. Equal claims are only valid if ownership is exactly equal.

    What happens if ownership percentages change during the year?

    If ownership percentages change, such as through a buyout or sale, depreciation claims must be adjusted to reflect the new ownership structure for the relevant period.

    Does joint ownership affect capital gains tax?

    Yes, capital gains tax is also calculated based on each owner's percentage of ownership. Each owner reports their share of the capital gain or loss in their tax return.

    Are there state-specific considerations for joint ownership?

    Yes, states may have different regulations regarding the legal structuring of ownership and land tax implications. It's advisable to consult with a local property expert.

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