Capital gains tax has always been a planning issue for Australian investors, business owners and families. But the Australia CGT discount changes announced in the May 2026 Budget have made CGT planning more important than ever. The rules do not simply “raise tax” in a single, uniform way. They change how gains are measured, when existing gains are protected, which assets may be affected, and how future decisions around selling, holding, restructuring and retirement may need to be reviewed.
As at July 2026, the key reform is now law: the Treasury Laws Amendment (Tax Reform No. 1) Act 2026 is listed as in force and was registered with Royal Assent dated 26 June 2026. The practical start date for the main CGT changes is 1 July 2027, with the new approach applying to relevant gains from CGT events happening on or after that date. (legislation.gov.au)
This guide explains what has changed, what has not changed, the likely CGT implications for common asset types, and how to think about capital gains strategies as part of a broader financial plan.
Quick summary: what changed?
The 2026–27 Federal Budget confirmed that Australia will replace the long-standing 50 per cent capital gains tax discount for many investors with cost base indexation, plus a 30 per cent minimum tax mechanism on certain capital gains. The Government’s Budget materials state that these changes will apply from 1 July 2027 and that the reforms will only apply to gains arising after that date. (budget.gov.au)
In plain English, the change means:
- The current 50 per cent CGT discount is being replaced for many future gains.
- Indexation is returning so that the cost base can be adjusted for inflation when calculating the taxable gain.
- A 30 per cent minimum tax on certain capital gains will apply where the taxpayer’s actual tax on those gains would otherwise fall below that level.
- Existing gains are not simply wiped into the new system. Gains that accrued before 1 July 2027 are treated differently from gains that accrue after that date.
- Some CGT exemptions and concessions remain important, including the main residence exemption and small business CGT concessions.
- New residential builds receive special treatment, including the ability for eligible investors to choose between the 50 per cent CGT discount and the new indexation-based approach when selling.
For many people, the central question is not just “Will I pay more capital gains tax?” It is “How do these tax law changes affect my timing, asset ownership, retirement strategy, estate planning, borrowing decisions and overall investment plan?”
What is capital gains tax in Australia?
Capital gains tax is the tax you pay when you make a profit from disposing of an asset such as an investment property, shares, managed funds, crypto assets or certain business assets. Although it is commonly called “capital gains tax”, the ATO explains that CGT is not a separate tax. Instead, your net capital gain is included in your income tax return and taxed as part of your assessable income. (ato.gov.au)
A CGT event generally happens when you dispose of an asset. For property and many other assets sold under contract, the timing can be critical: the ATO states that the CGT event happens when you enter into the contract of sale, not when settlement occurs. This matters when assessing which income year a gain belongs to and whether old or new CGT changes apply. (ato.gov.au)
Your net capital gain is generally worked out by:
- Calculating total capital gains for the year.
- Subtracting current year capital losses.
- Subtracting any unapplied net capital losses from previous years.
- Applying any available CGT discount or concession.
- Including the resulting net capital gain in your assessable income.
Capital losses are valuable, but they are limited. The ATO notes that a capital loss can be offset against capital gains in the same year or future years, but it cannot usually be deducted against ordinary income such as salary or wages. (ato.gov.au)
How the 50 per cent CGT discount worked before the change
Before the Australia CGT discount changes 2026, individuals and many trusts could generally reduce an eligible capital gain by 50 per cent if the asset had been held for at least 12 months. Complying superannuation funds had a different discount rate, generally 33⅓ per cent. Companies were not eligible for the general CGT discount. (ato.gov.au)
For example, under the old approach, if an individual sold an eligible investment asset after holding it for more than 12 months and made a $100,000 capital gain, the 50 per cent CGT discount could reduce the taxable capital gain to $50,000 before that amount was included in taxable income.
The policy issue behind the reform is that a flat percentage discount can provide very different outcomes depending on inflation, asset growth, tax rates and holding periods. The Budget explainer says the former discount did not accurately approximate the inflation component of gains, meaning investors could be overcompensated or undercompensated depending on the return profile of the asset. (budget.gov.au)
What is replacing the CGT discount?
From 1 July 2027, the new approach uses cost base indexation for many eligible gains. Instead of automatically discounting the gain by 50 per cent, the cost base is adjusted for inflation. The taxable gain is then based more closely on the “real” gain after inflation rather than the full nominal gain.
The Budget explainer states that indexation will be calculated using CPI in a similar manner to the arrangements that applied between 1985 and 1999, and that the ATO will provide guidance and tools to support calculation of the adjustment. It also states the changes will apply broadly to CGT assets, including property and shares, held by individuals, partnerships and trusts for at least 12 months. (budget.gov.au)
This is one reason investors should be cautious about simple headlines. Depending on inflation and investment performance, indexation may produce a better or worse outcome than the former 50 per cent discount.
Simple conceptual example
Imagine an investor buys an asset for $500,000 and later sells it for $700,000. The nominal gain is $200,000.
Under the former 50 per cent CGT discount, the taxable gain might be reduced to $100,000 if the asset qualifies.
Under indexation, the original cost base is adjusted for inflation. If inflation over the holding period increased the indexed cost base to $580,000, the real gain would be $120,000. That $120,000 would then be the starting point for tax calculations, subject to the detailed rules.
This example is deliberately simplified. The real calculation may involve acquisition costs, selling costs, capital improvements, depreciation adjustments, ownership structure, timing, carried-forward losses and transitional rules.
What is the 30 per cent minimum tax on capital gains?
The second major reform is the minimum tax mechanism. The Budget explainer describes a 30 per cent minimum tax rate applying to real capital gains accruing from 1 July 2027, with no impact until the gain is realised. The Act inserts rules requiring extra income tax in some cases so that certain capital gains are taxed at a minimum 30 per cent rate before offsets. (budget.gov.au)
This change is especially relevant for taxpayers who previously planned to defer selling assets until a lower-income year, such as after retirement, in order to pay tax on the discounted gain at a lower marginal tax rate.
However, not everyone is affected in the same way. If your capital gains are already taxed at an effective rate of at least 30 per cent, the minimum tax may not create an additional amount. The Budget explainer also states that recipients of certain means-tested income support payments, such as Age Pension or JobSeeker, are exempt from the minimum tax if they receive a payment in the financial year in which they realise the capital gain. (budget.gov.au)
When will CGT changes happen?
A common search question is: when will CGT changes happen?
The key practical date is 1 July 2027. The new CGT arrangements apply to capital gains from CGT events happening on or after 1 July 2027, and the Budget materials state that only gains accruing after 1 July 2027 are subject to the new arrangements. (budget.gov.au)
That means:
- Assets sold before 1 July 2027 are generally dealt with under the existing CGT discount rules, assuming the asset qualifies.
- Assets acquired after 1 July 2027 are generally dealt with wholly under the new arrangements.
- Assets owned before 1 July 2027 and sold after that date may require a split calculation between pre-change and post-change gains.
The timing of the CGT event matters. For example, if you sign a contract before 1 July 2027 but settle after 1 July 2027, the CGT timing may depend on the contract date rather than the settlement date. This is an area where investors should obtain personal tax advice before making decisions.
Will CGT changes be grandfathered in Australia?
Another common question is: will CGT changes be grandfathered?
The short answer is: partly, but not in the simple way many investors mean by “grandfathered”.
For CGT, the new rules are not a full exemption for all existing assets. Instead, the transitional arrangements protect gains that accrued before 1 July 2027. For eligible assets owned before 1 July 2027 and sold after that date, the Budget explainer says current arrangements apply to gains made before 1 July 2027, while the new arrangements apply to gains made after 1 July 2027. The 50 per cent CGT discount applies to the difference between the asset’s cost base and its value at 1 July 2027, while indexation and the minimum tax apply to gains accruing after that date using the 1 July 2027 value as the cost base. (budget.gov.au)
This is sometimes described as transitional relief rather than full grandfathering.
There is a clearer grandfathering rule for negative gearing on residential property. Properties held before the Budget announcement time of 7:30 pm AEST on 12 May 2026 are exempt from the negative gearing changes, including cases where a contract had been entered into but not yet settled. That is separate from the CGT discount reform, even though both were announced together. (budget.gov.au)
How existing assets may be treated
If you already own investment assets, your planning may need to focus on the value of each asset as at 1 July 2027.
The Budget explainer states that taxpayers will be able to determine an asset’s value at 1 July 2027 when the asset is later realised. They may seek a valuation as at that date, including quoted prices for assets such as shares, or use a specified apportionment formula that estimates value based on the asset’s growth rate over the holding period. The ATO is expected to provide tools to estimate this value. (budget.gov.au)
This creates several practical planning issues:
- Investors may need better records of asset values around 1 July 2027.
- Property owners may consider whether a professional valuation is worthwhile.
- Share investors may need accurate portfolio records, including acquisition dates, parcel history and reinvested distributions.
- Trusts may need to review how capital gains are attributed to beneficiaries.
- Business owners may need to coordinate CGT planning with succession, retirement and restructuring decisions.
The ATO already emphasises the importance of CGT record keeping, including keeping records of everything that affects capital gains and losses. Penalties can apply if records are not kept for at least five years after the relevant CGT event, and records may need to be kept longer where losses are carried forward or used in later returns. (ato.gov.au)
Which assets may be affected?
The CGT changes are broad. The Budget explainer says the new CGT arrangements apply to all CGT assets, including property and shares, held by individuals, partnerships and trusts for at least 12 months. (budget.gov.au)
Common assets that may be affected include:
- Investment properties.
- Shares and exchange traded funds.
- Managed funds and unit trusts.
- Crypto assets.
- Business assets.
- Certain trust-distributed capital gains.
- Pre-CGT assets to the extent post-1 July 2027 gains become relevant under the new rules.
For pre-CGT assets, the Budget explainer says gains on pre-1985 assets accrued before 1 July 2027 will continue to be exempt, but transitional arrangements also apply to legacy assets. (budget.gov.au)
What CGT exemptions remain?
Not every gain is taxable, and not every taxpayer is affected in the same way. CGT exemptions and concessions remain central to tax planning strategies.
Main residence exemption
Your main residence remains one of the most important CGT exemptions. The ATO says your main residence is generally exempt from CGT, subject to conditions and exceptions. For example, the exemption can be affected if you use the property to produce income, if it was not your main residence for the entire ownership period, if the land exceeds the relevant limit, or if you are an excluded foreign resident when the CGT event happens. (ato.gov.au)
The Budget explainer also confirms that the main residence will continue to be exempt for CGT purposes under the reforms. (budget.gov.au)
The six-year rule
If you move out of your home and rent it, you may be able to continue treating it as your main residence for up to six years, provided the conditions are satisfied and you do not treat another property as your main residence for the same period. The ATO describes this as the rule that allows a former home to continue being treated as the main residence for up to six years if it is used to produce income. (ato.gov.au)
This rule can be powerful, but it is also easy to misunderstand. It interacts with property ownership, relationships, moving house, renting, foreign residency and estate planning.
Small business CGT concessions
The four small business CGT concessions remain highly relevant. The ATO lists the small business 15-year exemption, 50 per cent active asset reduction, retirement exemption and rollover as the four key concessions. (ato.gov.au)
The 2026 reforms also included an important small business amendment. The Treasurer’s announcement after the Bill passed said the legislation included an increase to the eligible turnover threshold for the 50 per cent active asset CGT concession from $2 million to $10 million. (ministers.treasury.gov.au)
For business owners, this means CGT planning should not be isolated from exit planning, business valuation, asset protection, superannuation contribution planning and retirement timing.
New residential builds
New builds have special treatment under the reforms. The Budget materials state that investors who buy new builds will be able to choose either the 50 per cent CGT discount or the new indexation and minimum tax arrangements when they sell. They also continue to have access to negative gearing if the property qualifies as a new build. (budget.gov.au)
This is likely to make the definition of a “new residential dwelling” important. The Act states that requirements for a new residential dwelling are to be determined by legislative instrument, and that the Minister must be satisfied the requirements assist the objective of genuinely adding to residential dwelling supply in Australia. (legislation.gov.au)
CGT implications for property investors
Property investors may feel the reforms most visibly because the Australia CGT discount changes May 2026 Budget were announced alongside negative gearing changes.
For established residential investment properties purchased after the Budget announcement time and affected by the new negative gearing rules, losses may be quarantined rather than offset against salary or wages. The Act’s negative gearing schedule provides that excess residential dwelling deductions are not deductible for that income year and may be carried forward to reduce relevant residential property income or certain capital gains in future years. (legislation.gov.au)
From a CGT perspective, property investors need to consider:
- Whether the property was held before 1 July 2027.
- The value at 1 July 2027.
- Whether the property is a new build.
- Whether negative gearing losses are quarantined.
- Whether the property has ever been a main residence.
- Whether depreciation or capital works deductions affect the cost base.
- Whether selling before or after 1 July 2027 changes the expected outcome.
A rush to sell purely for tax reasons may be risky. Tax is only one part of an investment decision. Transaction costs, stamp duty on replacement assets, agent fees, market conditions, rental yield, interest rates, diversification and long-term goals all matter.
CGT implications for share and ETF investors
The reforms are not limited to housing. The Budget explainer says the CGT changes apply broadly across assets, including shares. (budget.gov.au)
Share and ETF investors may need to pay closer attention to:
- Parcel-level record keeping.
- Dividend reinvestment plans.
- Managed fund capital gains distributions.
- Tax-loss harvesting.
- Portfolio rebalancing.
- The timing of selling down assets in retirement.
- Whether superannuation or other structures are more appropriate for long-term investing.
Investors who have accumulated many small parcels through dividend reinvestment may find CGT calculations more complex. Good records are no longer just an administrative habit; they can directly affect the quality of your tax planning.
CGT implications for retirees and pre-retirees
Before the reforms, a common capital gains strategy was to hold assets until retirement, sell in a lower-income year and use the 50 per cent CGT discount to reduce the taxable amount. The 30 per cent minimum tax may reduce the value of that strategy for some people.
This does not mean every retiree should sell assets earlier. It means retirement planning should be modelled carefully. A financial advisor can help compare scenarios such as:
- Selling assets gradually before retirement.
- Holding assets and selling later.
- Contributing to superannuation where contribution caps and eligibility rules allow.
- Using pension phase assets appropriately.
- Managing Age Pension or other benefit interactions.
- Balancing taxable income across spouses.
- Retaining assets for estate planning purposes.
The right strategy depends on cash flow needs, marginal tax rates, asset allocation, life expectancy, estate goals, risk tolerance and whether the minimum tax rules apply.
Capital gains strategies to review now
The reforms do not mean investors should make rushed decisions. They do mean that tax planning strategies should be reviewed before 1 July 2027.
1. Build a CGT register
Create a clear list of assets, including:
- Purchase dates.
- Purchase prices.
- Buying and selling costs.
- Capital improvements.
- Depreciation and capital works claims.
- Ownership structure.
- Current estimated value.
- Expected income yield.
- Likely role in your long-term plan.
For assets likely to be held beyond 1 July 2027, consider what evidence you may need to support value at that date.
2. Model “sell now” versus “hold” scenarios
Do not assume selling before 1 July 2027 is automatically better. Compare:
- Tax payable under the current discount.
- Expected tax under transitional rules.
- Future growth potential.
- Selling costs.
- Reinvestment options.
- Risk and diversification.
- Cash flow needs.
The right answer may be different for a high-growth share portfolio, a low-growth property, a business asset or a legacy family asset.
3. Review ownership structures
Ownership structure can affect tax outcomes. Assets may be owned personally, jointly, through a trust, within superannuation, through a company or via another structure. The reforms affect individuals, partnerships and trusts in particular ways, and the Act also includes rules around trust gains and minimum tax capital gains. (legislation.gov.au)
Restructuring can itself trigger CGT, stamp duty, legal costs and asset protection issues. Do not transfer assets just to “fix” tax without professional advice.
4. Revisit retirement drawdown plans
If your retirement strategy depends on selling large assets in low-income years, review whether the 30 per cent minimum tax changes the outcome. You may need to consider staged disposals, asset location, superannuation strategy and estate planning.
5. Coordinate with your accountant and financial advisor
Your accountant can help with tax calculations, CGT reporting and compliance. A financial advisor can help integrate the tax outcome into the bigger picture: retirement income, debt, risk, estate planning, investment selection, superannuation and family goals.
Common mistakes to avoid
The biggest CGT mistakes after tax law changes usually come from acting too quickly or relying on general rules without checking personal details.
Avoid these traps:
- Assuming all existing assets are fully grandfathered.
- Confusing CGT transitional rules with negative gearing grandfathering.
- Forgetting that contract date may determine the CGT event timing.
- Ignoring the 1 July 2027 valuation issue.
- Selling assets solely to preserve the 50 per cent discount.
- Forgetting capital losses can only be used against capital gains.
- Poor record keeping for shares, ETFs, trusts or property improvements.
- Transferring assets between spouses or entities without checking whether CGT or duty applies.
- Treating online calculators as personal advice.
- Failing to integrate tax planning with cash flow, risk and long-term goals.
Practical checklist before 1 July 2027
Before the new CGT changes take full practical effect, consider taking the following steps:
- List all investment and business assets.
- Identify which assets have unrealised gains.
- Separate assets likely to be sold before 1 July 2027 from those likely to be held longer.
- Gather cost base records and transaction history.
- Review property valuations and improvement records.
- Check whether any assets may qualify for CGT exemptions.
- Review whether small business CGT concessions may apply.
- Model tax outcomes under current and new rules.
- Review your retirement income plan.
- Speak with a qualified tax professional and financial advisor before making irreversible decisions.
How a financial advisor can help
The Australia CGT discount changes 2026 are not just a tax event. They can affect how you build wealth, when you sell assets, how you fund retirement and how you pass wealth to the next generation.
A financial advisor can help you:
- Clarify your long-term financial goals.
- Decide whether assets still suit your plan.
- Model different sale and hold scenarios.
- Coordinate superannuation and investment strategies.
- Manage debt and cash flow.
- Work with your accountant on tax-efficient implementation.
- Balance tax minimisation against investment risk.
- Create a step-by-step plan rather than reacting to headlines.
If you want support aligning CGT implications with a holistic financial plan, consider speaking with a qualified adviser. You can compare experienced advisers through Top 10 Financial Planner’s city guides for financial planners in Sydney, financial planners in Brisbane and financial planners in Melbourne.
Frequently asked questions
What are the main CGT changes from the May 2026 Budget?
The main change is the replacement of the 50 per cent CGT discount with cost base indexation for many future gains, combined with a 30 per cent minimum tax mechanism on certain capital gains from 1 July 2027. (budget.gov.au)
Will CGT changes be grandfathered in Australia?
The CGT reforms are partly transitional, not fully grandfathered in the usual sense. Gains accruing before 1 July 2027 are generally treated under current arrangements, while gains accruing after that date may fall under the new rules. (budget.gov.au)
Does the main residence exemption still apply?
Yes. The main residence exemption remains a key CGT exemption, subject to the usual conditions. The Budget explainer confirms that the main residence will continue to be exempt for CGT purposes. (ato.gov.au)
Are shares affected by the CGT changes?
Yes. The Budget explainer states that the changes apply to all CGT assets, including property and shares, held by individuals, partnerships and trusts for at least 12 months. (budget.gov.au)
Should I sell assets before 1 July 2027?
Not necessarily. Selling may preserve the old CGT treatment for a particular gain, but it may also create tax earlier, trigger transaction costs and disrupt your long-term investment plan. Compare scenarios with a financial advisor and tax professional before acting.
Final thoughts
The recent CGT changes are significant, but they should not be viewed in isolation. The best response is not panic selling or ignoring the rules. It is structured planning.
Start by understanding which assets are affected, what gains have already accrued, what may happen after 1 July 2027 and how each decision fits into your broader financial life. Capital gains strategies are most effective when they are connected to retirement planning, investment strategy, debt management, estate planning and tax compliance.
If you are unsure how the CGT changes affect you, seek advice early. A qualified financial advisor, working alongside your accountant or tax adviser, can help turn complex tax law changes into a practical plan that supports your long-term goals.
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Disclaimer: This article is general information only and does not take into account your personal objectives, financial situation or needs. It is not financial, tax or legal advice. Top10FinancialPlanner is not a licensed financial adviser or registered tax agent. Tax laws are subject to change, and the CGT reforms discussed are still being supported by ATO guidance and legislative instruments that may affect how they apply. Before acting on any information in this article, you should consider whether it is appropriate for your circumstances and seek advice from a licensed financial adviser and a registered tax practitioner. Information is current as at July 2026