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Can I Use Prior Year Capital Losses to Reduce My CGT?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Yes, you can use prior year capital losses to offset capital gains in Australia. Capital losses can be carried forward indefinitely and applied against future capital gains until they are fully utilised. Ensure accurate record-keeping and consult your accountant for optimal tax strategies.

Capital gains tax (CGT) can significantly impact the profitability of your investments when you sell an asset at a profit. Fortunately, the Australian tax system allows you to use prior year capital losses to reduce your CGT liability. This can be a valuable strategy for investors looking to optimise their tax obligations.

Under the Australian tax framework, capital losses from previous years can be carried forward and used to offset capital gains in future years. This means if you have incurred a capital loss in a prior year, you can apply this loss against current or future capital gains until the loss is fully utilised. Importantly, these losses can be carried forward indefinitely, providing flexibility in managing your tax position.

One common misconception among investors is that capital losses can be used to offset other types of income, such as salary or rental income. However, this is not the case. Capital losses can only be applied against capital gains, not ordinary income. Therefore, understanding how to strategically use these losses is crucial.

To see how this plays out, consider an investor who sold a property in 2023, realising a capital gain of $100,000. This investor had a prior year capital loss of $30,000 from a different investment. By applying the capital loss to the current year's gain, the taxable capital gain is reduced to $70,000. Assuming a 50% CGT discount for holding the property for over 12 months, the taxable gain further reduces to $35,000. At a 37% marginal tax rate, this results in a tax liability of $12,950, compared to $18,500 without using the prior year loss.

In our experience reviewing thousands of properties across Australia, we often find that investors overlook the opportunity to utilise capital losses effectively. Many fail to maintain accurate records of their capital losses, which can lead to missed opportunities. Another common issue is misunderstanding the application of the 50% CGT discount, which only applies to individuals and trusts, not companies.

The answer can differ depending on your situation. For instance, if you purchased an investment property post-9 May 2017, the rules regarding plant and equipment depreciation have changed, affecting your overall tax strategy. Similarly, if you own property through a self-managed super fund (SMSF), different rules may apply. Commercial properties also have distinct considerations compared to residential properties, and joint ownership can complicate the calculation of capital gains and losses.

Given the complexities involved, it is advisable to seek professional advice. A Chartered Quantity Surveyor can provide insights into property depreciation and how it interacts with CGT, while an accountant can tailor tax strategies to your personal circumstances. Together, they can help you navigate the intricacies of capital gains and losses, ensuring you maximise your tax position.

  • Review your investment portfolio for any unused capital losses.
  • Consult with your accountant to confirm the applicability of these losses.
  • Ensure accurate record-keeping for all capital gains and losses.
  • Consider the timing of asset sales to optimise tax outcomes.
  • Evaluate the impact of the CGT discount on your tax liability.
  • Seek advice from a Chartered Quantity Surveyor to maximise depreciation benefits.
  • Frequently Asked Questions

    Can capital losses be used to offset income tax?

    No, capital losses can only be used to offset capital gains, not income tax on salary or rental income.

    How long can I carry forward capital losses?

    Capital losses can be carried forward indefinitely until they are fully used against capital gains.

    Do capital losses expire?

    No, capital losses do not expire. They can be carried forward indefinitely to offset future capital gains.

    Does the CGT discount apply to all asset types?

    The 50% CGT discount applies to individuals and trusts for assets held over 12 months, but does not apply to companies.

    Are there state-specific rules for CGT?

    CGT is governed by federal law, but some states may have additional property taxes that affect overall tax strategy.

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