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

Owning Property · Koste Knowledge Base

How Often Should You Update Your Depreciation Schedule?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Typically, you should update your depreciation schedule whenever significant changes occur to your property, such as renovations or new purchases. This ensures you maximise your tax benefits under Division 40 and Division 43 of the ITAA 1997. Consult with a Chartered Quantity Surveyor to identify any missed opportunities.

Most investors understand the importance of a depreciation schedule, but many are unsure about how often it should be updated. A depreciation schedule is not a 'set and forget' document. It should be reviewed and potentially updated whenever there's a significant change to your property, such as renovations, new asset purchases, or changes in legislation.

When to Update Your Depreciation Schedule

Updating your depreciation schedule is crucial when significant changes occur. This includes renovations, acquiring new plant and equipment, or changes in property use. Under Division 40 of ITAA 1997, plant and equipment must be depreciated based on their effective life, which can change with new acquisitions. Division 43 covers capital works, which might need reassessment if structural improvements are made. A common misconception is that schedules need updating annually regardless of changes, which isn't necessary unless prompted by specific events.

How This Works in Practice

Consider a 2015-built 3-bedroom house in Melbourne, originally purchased for $800,000. The owner, after making $50,000 worth of renovations, including a new kitchen and bathroom, should update the depreciation schedule. The new assets increase the deductible depreciation, potentially saving an additional $2,000 in tax in the first year alone, assuming a 37% marginal tax rate. Without updating, these deductions would be missed, resulting in unnecessary out-of-pocket expenses.

Professional Insight

In our experience, many investors overlook the impact of small renovations on their depreciation schedule. One thing we frequently see is investors forgetting to claim depreciation on new assets like appliances, which can be significant. What most investors don't realise is that even small changes, like replacing carpets or blinds, can cumulatively add up to substantial deductions. Another common oversight is not updating the schedule after legislative changes, which can lead to missed opportunities.

When Does the Answer Change?

  • Post-9 May 2017 Acquisitions: If you acquired a second-hand residential property after this date, you cannot claim Division 40 on previously used items. However, updates may be needed if you add new assets.
  • Pre-1987 Buildings: If your property was built before 1987, you may not be eligible for Division 43 deductions unless renovations have occurred.
  • Commercial Properties: These often require more frequent updates due to changes in use or tenant fit-outs.
  • Joint Ownership: Changes in ownership percentages necessitate an update to ensure correct division of deductions.
  • When Should You Seek Professional Advice?

    You should seek professional advice if you've made any changes to your property or if you're unsure about the impact of legislative changes on your depreciation. A Chartered Quantity Surveyor can ensure your schedule is up-to-date and compliant, maximising your deductions. Accountants can further tailor advice based on your specific financial situation.

    What to Do Next

  • Review your property for any changes or renovations since your last schedule was prepared.
  • Contact a Chartered Quantity Surveyor if updates are necessary.
  • Keep receipts and documentation for all new purchases and renovations.
  • Consult your accountant to understand the tax implications of updates.
  • Ensure compliance with current ATO regulations.
  • Schedule regular reviews, especially after significant property changes.
  • Frequently Asked Questions

    How does a depreciation schedule affect my tax return?

    A depreciation schedule allows you to claim depreciation deductions on your tax return, reducing your taxable income and increasing your tax refund or reducing your payable tax.

    Can I update my depreciation schedule annually?

    You can, but it's not necessary unless there have been significant changes to your property, such as renovations or new asset purchases.

    Does the state I live in affect my depreciation schedule?

    While state regulations can impact property values and renovation costs, the depreciation rules are governed by federal legislation and apply uniformly across Australia.

    What happens if I don't update my depreciation schedule?

    You may miss out on potential tax deductions, leading to higher taxable income and less tax efficiency.

    How do I update my depreciation schedule?

    Contact a Chartered Quantity Surveyor to review your property changes and update the schedule. Provide documentation for any new purchases or renovations.

    Related Articles

    Read Full Article Free Calculator
    tax depreciationdepreciation scheduleinvestment propertyproperty taxATO compliance

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