Capital Gains Tax in Australia: Chapter 3 - The 15-Year Exemption - When a Business Sale Can Be Tax-Free
- Future Accounting
- May 11
- 4 min read
Written by: Melissa Cunliffe
Of all the small business CGT concessions, the 15-year exemption is the most powerful.
If the conditions are satisfied, the entire capital gain can be disregarded.
No tax. No partial reduction. No deferral.
For many business owners, this represents the single largest tax planning opportunity available at the point of exit.
Why this concession matters
Most CGT strategies focus on reducing tax.
This one can eliminate it entirely.
We often see situations where a business has been built over decades, the goodwill has significant value, and the owner is approaching retirement.
In the right circumstances, the gain on sale can be completely tax-free.
The key conditions
1. You must meet the basic eligibility conditions
As covered in Chapter 2, this means passing either the $2 million turnover test or the $6 million net asset test, satisfying the active asset test, and meeting any additional requirements if shares or trust interests are involved.
2. You must have owned the asset for at least 15 years
This is a strict requirement.
The asset must have been continuously owned for at least 15 years prior to the CGT event.
This commonly applies to business goodwill, shares in a trading company, or interests in a trust.
3. You must be aged 55 or over and retiring (or permanently incapacitated)
At the time of the CGT event, you must be 55 years or older, and the sale must be in connection with your retirement.
Alternatively, the exemption may apply if you are permanently incapacitated, regardless of age.
What does “in connection with retirement” mean for the 15-year exemption?
This is not as rigid as many people assume.
You do not need to stop working entirely or never earn income again.
However, there must be a genuine reduction in your working activities.
Practical interpretation
Examples that may satisfy the requirement:
selling your business and ceasing full-time work
moving from full-time business ownership to part-time consulting
transitioning into a less active role
Examples that may not satisfy the requirement:
selling one business but immediately starting another similar business at full capacity
continuing business activities at the same scale as before
This is an area where documentation and intent matter.
Special rules for companies and trusts
Where the asset is owned by a company or trust, additional conditions apply.
In particular:
there must be a significant individual (generally someone with at least a 20% interest)
that individual must have been a significant individual for at least 15 years during the ownership period
Why this matters
This is one of the most common failure points.
We often see discretionary trusts with changing distributions over time, family structures where ownership is unclear, or no individual clearly meeting the 20% threshold.
If the significant individual test is not satisfied, the exemption may not be available — even if the business has been held for decades.
What about superannuation?
One of the key advantages of the 15-year exemption is that there is no requirement to contribute the proceeds to superannuation.
This is different from the retirement exemption.
However, there may still be strategic reasons to contribute some or all of the proceeds to super, depending on your retirement plans, contribution caps and overall wealth strategy.
Practical example
Scenario:
Maria has operated a manufacturing business for 22 years
She owns the business through a company
She is 60 years old and plans to retire
The business is sold, generating a $2 million capital gain
Outcome:
If all conditions are met, the entire $2 million gain can be disregarded
No CGT is payable on the sale
This is a materially different outcome compared to being taxed at marginal rates, even after discounts.
Where things can go wrong
1. Ownership issues
The asset has not technically been owned for 15 years, for example due to restructures or changes in ownership.
2. Failing the significant individual test
Particularly common in discretionary trust structures.
3. Retirement not clearly established
The taxpayer continues working in a similar capacity without a meaningful reduction.
4. Late-stage planning
By the time the sale is imminent, it is often too late to fix structural issues.
Strategic insights — maximising the opportunity
1. Plan well in advance
If a business is likely to be sold in the future, reviewing eligibility years ahead can preserve access to this exemption.
2. Review ownership structures
Ensure there is a clear significant individual where required.
3. Be mindful of restructures
Changes in ownership can reset the 15-year clock if not handled carefully.
4. Align tax planning with succession planning
This concession often works best when integrated with retirement and exit strategies.
Key takeaway
The 15-year exemption is one of the most generous concessions in the tax system.
But it is also one of the most binary: either you qualify and the gain is tax-free, or you don’t, and you fall back on the other concessions (or full taxation).
The difference can be substantial.
Planning to exit your business?
The 15-year exemption can deliver a life-changing outcome — but only if everything is structured correctly well before the sale.
If you’re considering selling your business in the next few years, now is the time to review your eligibility, structure, and strategy.
Book a confidential meeting with our team to assess your position and identify opportunities to minimise or eliminate CGT on exit.
A short conversation today could make a significant difference to your after-tax outcome.
Next: Capital Gains Tax in Australia: Chapter 4 - The 50% Active Asset Reduction - A Powerful Second Layer of CGT Relief
Disclaimer
This article does not constitute financial advice and is for general information only. It does not take into account any individual’s personal objectives, situation or needs, and is not intended as professional advice. Any similarity to an individual’s personal circumstances and the examples provided in this article is purely coincidental. Any person acting upon such information without receiving specific advice, does so entirely at their own risk.
Authorisation under an Australian Financial Services Licence (AFSL) is not required in the provision of this article and the author plus Future Accounting Group Pty Ltd is not acting in its capacity as an Australian Financial Services Licence holder
Liability limited by a scheme approved under professional standards legislation.
