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How to Reduce CGT When Selling an Investment Property

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

To reduce CGT when selling an investment property in Australia, consider strategies like holding the property for over 12 months to qualify for a 50% CGT discount, offsetting gains with capital losses, and maximizing your cost base. Consult with a Chartered Quantity Surveyor and accountant for tailored advice.

Selling an investment property often triggers a Capital Gains Tax (CGT) event, impacting the net profit from your sale. Understanding how to effectively reduce CGT can significantly improve your after-tax outcome.

Strategies to Reduce CGT on Investment Property Sales

To minimise CGT, the most common approach is to hold the property for more than 12 months, qualifying for a 50% CGT discount if you're an individual. This discount, however, doesn't apply to companies. Another key strategy is to ensure that your cost base is maximised. This includes acquisition costs, improvement costs, and certain holding costs that are not immediately deductible. Offsetting capital gains with capital losses from other investments can also reduce your taxable gain. Importantly, if you're selling a property that was your main residence for part of the ownership period, you may be eligible for a partial main residence exemption.

How This Works in Practice

Consider a scenario where you purchased a 3-bedroom house in Melbourne for $800,000 in 2015 and sold it in 2023 for $1,200,000. Your initial gain appears to be $400,000. However, by holding the property for over 12 months, you qualify for a 50% CGT discount, reducing the taxable gain to $200,000. Assume you also made $50,000 worth of improvements and incurred $20,000 in selling costs, these increase your cost base, further reducing the taxable gain to $130,000. At a 37% marginal tax rate, the tax liability would be $48,100, instead of the $148,000 it would have been without these strategies.

Professional Insight

In our experience, one of the most overlooked strategies is ensuring your cost base is fully maximised. Investors often miss claiming all eligible costs, such as legal fees and stamp duty. Another frequent oversight is not considering the timing of the sale — selling in a year with lower income can reduce the overall tax rate. Additionally, many investors don't realise the potential of using a main residence exemption if they've lived in the property at some stage. A common mistake is failing to offset gains with capital losses from other investments, which can be a powerful tool if managed correctly. Finally, engaging a Chartered Quantity Surveyor early can help identify all eligible costs for a more accurate cost base.

When Does the Answer Change?

Several factors can alter how CGT is calculated:

  • Properties Acquired Before 20 September 1985: These are exempt from CGT.
  • Properties Held in a Company: No 50% CGT discount applies.
  • Main Residence Partial Exemption: If you lived in the property at any time, you might qualify for a partial exemption.
  • Foreign Residents: Different rules apply, especially concerning the main residence exemption.
  • Inherited Property: Special rules may apply depending on the date of death and the original acquisition date.

When Should You Seek Professional Advice?

While general strategies can be useful, CGT calculations are highly individual. Factors such as your income level, how long you've held the property, and other investments all play a role. A Chartered Quantity Surveyor can help maximise your cost base, and an accountant can assist with timing and offset strategies. Professional advice ensures compliance and optimal tax outcomes.

What to Do Next

  • Review Your Property's Cost Base: Ensure all costs are included.
  • Consult a Chartered Quantity Surveyor: Get a professional assessment of your property's cost base.
  • Evaluate Your Investment Portfolio: Identify any capital losses that can offset your gains.
  • Consider Timing: Plan the sale in a low-income year if possible.
  • Discuss with Your Accountant: Tailor strategies to your personal tax situation.
  • Prepare for the Sale: Gather all relevant documentation and cost records.
  • Frequently Asked Questions

    How is CGT calculated on investment property in Australia?

    CGT is calculated on the capital gain made from selling a property. This gain is the difference between the sale price and the property's cost base, which includes acquisition and improvement costs. Discounts and exemptions may apply.

    Can I claim a CGT discount if I sell within a year?

    No, the 50% CGT discount for individuals applies only if you hold the property for more than 12 months. Selling within a year means no discount.

    Do selling costs reduce CGT?

    Yes, selling costs such as agent fees and legal expenses can be added to the cost base, effectively reducing the capital gain and thus the CGT payable.

    How does CGT differ for properties in Queensland?

    CGT rules are federally legislated, so they apply uniformly across Australia, including Queensland. Local state taxes and duties, however, may vary.

    What happens to CGT in my tax return?

    Your taxable capital gain is included in your assessable income for the year. It is then taxed at your marginal tax rate after any applicable discounts or exemptions.

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