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What is the Depreciation Rate for Commercial Buildings?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

In Australia, the depreciation rate for commercial buildings is generally 2.5% per annum under **Division 43 of the ITAA 1997**. This rate applies to capital works deductions, which cover the structural elements of a building. However, this can vary based on the construction date and building type. Consulting a Chartered Quantity Surveyor is recommended for accurate assessments.

The depreciation rate for commercial buildings in Australia is primarily governed by Division 43 of the Income Tax Assessment Act 1997. This division allows owners of commercial properties to claim a capital works deduction, typically at a rate of 2.5% per annum. This rate applies to the building's structure and any fixed items, such as walls, floors, and ceilings, provided the construction commenced after 16 September 1987.

For commercial properties, the capital works deduction is a crucial aspect of tax planning as it allows investors to recoup a portion of their construction costs over time. The most common misconception is that depreciation only applies to residential properties. In reality, commercial properties offer substantial depreciation benefits, which can significantly impact the overall return on investment.

To see how this plays out in practice, consider a scenario involving a commercial office building in Sydney, constructed in 2010 with a construction cost of $1 million. Under the 2.5% depreciation rate, you can claim $25,000 annually as a capital works deduction. Assuming a 37% marginal tax rate, this deduction reduces your tax liability by $9,250 each year.

In our experience reviewing thousands of properties across Australia, many investors overlook the potential of capital works deductions in their commercial properties. We often find that:

  • Investors underestimate the cumulative impact of annual deductions over the building's effective life.
  • Many are unaware that renovations and improvements can reset or increase the depreciation potential.
  • There's a frequent oversight in accounting for all eligible construction costs, including professional fees and preliminaries.
  • Some investors mistakenly believe that only new buildings qualify for deductions, when in fact, older buildings can also be eligible if certain criteria are met.
  • The benefits of obtaining a professional depreciation schedule are often underestimated, leading to missed claims.
The answer can differ depending on your situation. For example, if the commercial building was constructed prior to 16 September 1987, it may not qualify for Division 43 deductions unless significant renovations have been undertaken. Additionally, if a building is owned by a self-managed super fund (SMSF), different tax considerations may apply. Joint ownership structures can also impact how deductions are claimed. Furthermore, if the property is used partially for residential purposes, different rules may apply.

Navigating the nuances of depreciation for commercial buildings can be complex. A Chartered Quantity Surveyor, in collaboration with your accountant, can provide tailored advice, ensuring that all deductions are maximized and compliant with current legislation. This professional insight ensures that you are not only compliant but also maximizing your investment returns.

  • Review your property’s construction date to determine eligibility for Division 43 deductions.
  • Engage a Chartered Quantity Surveyor to prepare a comprehensive depreciation schedule.
  • Consult with your accountant to integrate depreciation deductions into your tax strategy.
  • Keep detailed records of all construction and renovation costs.
  • Re-evaluate your property’s depreciation potential after any renovations or improvements.
  • Stay informed about any legislative changes that may affect depreciation rates.
  • Frequently Asked Questions

    How does the construction date affect depreciation?

    For commercial buildings, the construction date determines eligibility for Division 43 deductions. Buildings constructed after 16 September 1987 are generally eligible for a 2.5% annual deduction.

    Can I claim depreciation on a mixed-use building?

    Yes, but the depreciation must be apportioned between the commercial and residential components. A Chartered Quantity Surveyor can help ensure accurate apportionment.

    How do renovations affect my depreciation claim?

    Renovations can increase your depreciation claim by resetting the eligible construction costs and potentially the effective life of the assets.

    Is depreciation different for commercial properties in Victoria?

    The federal laws under the ITAA 1997 apply nationwide, so the depreciation rules are consistent across all Australian states, including Victoria.

    How do I include depreciation in my tax return?

    Depreciation is included as a deduction on your tax return. A professional depreciation schedule will provide the necessary figures to report accurately.

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