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The small business capital gains tax (CGT) concessions are a set of four powerful tax relief measures available to eligible small business owners in Australia who sell business assets. These concessions can reduce or completely eliminate capital gains arising from the disposal of active business assets, recognising that business owners invest their capital and labour into their enterprise over many years and deserve relief when they realise that value on exit. To access any of the concessions, a business must meet basic eligibility requirements: either having an aggregated annual turnover of less than $2 million, or having a net asset value of less than $6 million (excluding the value of the main residence used primarily personally, certain personal assets, and superannuation). The asset being sold must generally be an active asset — one used or held ready for use in carrying on the business. The four concessions are: the 15-year exemption, which allows business owners aged 55 or over (or permanently incapacitated) who have continuously owned an active asset for at least 15 years to completely disregard the capital gain; the 50% active asset reduction, which halves the capital gain on any qualifying active asset; the retirement exemption, which allows up to $500,000 of capital gains to be disregarded over a lifetime (subject to contribution to superannuation for owners under 55); and the rollover concession, which defers the gain if a new replacement active asset is acquired within two years. These concessions can be stacked in a specific order to maximise the reduction in CGT.
CGT After Concessions = Capital Gain × (1 - General 50% Discount if >12months) × (1 - 50% Active Asset Reduction) - Retirement Exemption (up to $500K lifetime) - 15-Year Exemption (if eligible)
- 1Calculate the capital gain on the disposal of the business asset: sale proceeds minus cost base (purchase price plus costs).
- 2Check basic eligibility: aggregated turnover under $2M or net assets (excluding home/super/certain personal assets) under $6M; asset must be active.
- 3Apply the individual 50% general CGT discount if the asset was held for more than 12 months before the disposal.
- 4Apply the 50% active asset reduction to the remaining capital gain if the active asset test is met, halving the gain further.
- 5Consider the retirement exemption: up to $500,000 lifetime can be disregarded; if the owner is under 55, the amount must be contributed to superannuation.
- 6Consider the 15-year exemption if the owner is 55+ and the asset has been held continuously for 15+ years — this exempts the entire gain.
- 7Consider the small business rollover if a new active asset is purchased within 2 years, deferring the remaining gain until that asset is eventually sold.
15-year exemption requires 15+ years continuous ownership, 55+ or incapacitated, active asset, and meeting the basic conditions
Owner meets all criteria: age 62 (≥55), held 18 years (≥15), active asset, turnover <$2M. Full gain exempt.
General 50% discount applied first, then 50% active asset reduction
$400,000 × 50% (general discount) = $200,000; $200,000 × 50% (active asset) = $100,000 taxable.
Under 55 must pay the exempted amount into superannuation
$180,000 covered by retirement exemption (within $500K lifetime cap). As owner is under 55, must contribute to super.
Rollover defers the gain until the new asset is eventually sold; does not eliminate it
$250,000 gain rolled over. New asset cost base reduced from $600,000 to $350,000, creating future embedded gain.
A business owner aged 60 selling their trade business after 20 years and using the 15-year exemption to completely eliminate CGT on the sale.. This application is commonly used by professionals who need precise quantitative analysis to support decision-making, budgeting, and strategic planning in their respective fields
A partner in a professional firm using the 50% active asset reduction and retirement exemption to minimise CGT on their share of goodwill.. Industry practitioners rely on this calculation to benchmark performance, compare alternatives, and ensure compliance with established standards and regulatory requirements
An accountant modelling the optimal stack of CGT concessions for a client selling commercial property used in their business.. Academic researchers and students use this computation to validate theoretical models, complete coursework assignments, and develop deeper understanding of the underlying mathematical principles
A financial planner advising a client under 55 to use the retirement exemption and direct the proceeds into superannuation.. Financial analysts and planners incorporate this calculation into their workflow to produce accurate forecasts, evaluate risk scenarios, and present data-driven recommendations to stakeholders
A tax lawyer reviewing whether the net asset value test is satisfied ahead of a major business sale to confirm small business CGT concession eligibility.. This application is commonly used by professionals who need precise quantitative analysis to support decision-making, budgeting, and strategic planning in their respective fields
Shares in Small Business Companies
{'title': 'Shares in Small Business Companies', 'body': "Shares in a small business company can qualify as active assets if at least 80% of the company's assets are active. This allows shareholders selling their shares to access the concessions in the same way as a sole trader or partnership selling directly."}
Trusts and the Concessions
{'title': 'Trusts and the Concessions', 'body': 'Discretionary trusts can access the small business CGT concessions, but must satisfy the basic conditions at the trust level. Distributions of the concession amounts must be carefully managed, and the concession stake test applies to ensure sufficient connection to the business.'} This edge case frequently arises in professional applications of australia small business cgt where boundary conditions or extreme values are involved. Practitioners should document when this situation occurs and consider whether alternative calculation methods or adjustment factors are more appropriate for their specific use case.
Compulsory Acquisition
{'title': 'Compulsory Acquisition', 'body': 'If your business asset is compulsorily acquired by a government body, the small business CGT concessions can still apply, provided all conditions are met at the time of the CGT event. The rollover concession in particular can help defer the gain while finding a replacement property.'}
Death and the Concessions
{'title': 'Death and the Concessions', 'body': 'When a business owner dies and assets pass to beneficiaries, the 15-year exemption may still apply if the asset is subsequently sold by the legal personal representative or beneficiary, provided the original ownership period is counted and other conditions are met.'} When encountering this scenario in australia small business cgt calculations, users should verify that their input values fall within the expected range for the formula to produce meaningful results. Out-of-range inputs can lead to mathematically valid but practically meaningless outputs that do not reflect real-world conditions.
| Concession | Eligibility Requirement | Result | Super Required? |
|---|---|---|---|
| 15-Year Exemption | 55+ or incapacitated; 15+ years ownership | Full gain exempt | No (optional) |
| 50% Active Asset Reduction | Active asset + basic conditions | Gain halved | No |
| Retirement Exemption | Basic conditions met | Up to $500K exempt lifetime | Yes (if under 55) |
| Small Business Rollover | New active asset within 2 years | Gain deferred | No |
Can I use more than one small business CGT concession on the same sale?
Yes. The concessions can be stacked in a specific order. For example, you can apply the 50% general discount first, then the 50% active asset reduction, and then the retirement exemption to any remaining gain — potentially reducing a large gain to zero. This is an important consideration when working with australia small business cgt calculations in practical applications. The answer depends on the specific input values and the context in which the calculation is being applied.
What is an active asset?
An active asset is one used or held ready for use in carrying on a business — including business goodwill, commercial real estate used in the business, and other business equipment. Financial assets like shares and loans are generally not active assets unless you are in the financial services business.
What is the net asset value test?
The net asset value test requires that the sum of the net market value of assets of the business entity and its affiliates/connected entities is less than $6 million, excluding the main residence used primarily personally, superannuation, and certain personal assets. The test is assessed just before the CGT event.
Is the $500,000 retirement exemption a lifetime limit?
Yes. The $500,000 retirement exemption is a lifetime limit per individual taxpayer. It applies across all years and all businesses. Once you have used $500,000 in total across all qualifying disposals, no further retirement exemption is available. This is an important consideration when working with australia small business cgt calculations in practical applications. The answer depends on the specific input values and the context in which the calculation is being applied.
Do I have to be retiring to use the retirement exemption?
No — despite the name, you do not need to actually retire. However, if you are under 55, you must contribute the exempt amount to superannuation. If you are 55 or over, the exemption is available without any super contribution requirement. This is an important consideration when working with australia small business cgt calculations in practical applications. The answer depends on the specific input values and the context in which the calculation is being applied.
Does the 15-year exemption apply to goodwill?
Yes, goodwill is an active asset and can qualify for the 15-year exemption, provided all other conditions are met. This is particularly valuable for professional practices sold after many years of operation. This is an important consideration when working with australia small business cgt calculations in practical applications. The answer depends on the specific input values and the context in which the calculation is being applied.
Can a company access the small business CGT concessions?
Yes, companies can access the concessions, but there are additional rules. For example, the company must satisfy the controlling individual test, and to access the retirement exemption or 15-year exemption, the gain must generally be distributed or connected to an individual's retirement. This is an important consideration when working with australia small business cgt calculations in practical applications. The answer depends on the specific input values and the context in which the calculation is being applied.
How does the rollover concession work if I don't buy a replacement asset?
If you elect the rollover but do not purchase a qualifying replacement active asset within two years after the last CGT event, or within two years of the CGT event if earlier, the rolled-over gain becomes assessable in that income year. The process involves applying the underlying formula systematically to the given inputs. Each variable in the calculation contributes to the final result, and understanding their individual roles helps ensure accurate application.
Consejo Pro
Combining the general 50% CGT discount with the 50% active asset reduction effectively leaves only 25% of the original gain assessable. Adding the retirement exemption can then eliminate that remaining 25% entirely, subject to the lifetime limit.
¿Sabías que?
The small business CGT concessions have been available since 1 October 1999 and were designed to encourage entrepreneurship by allowing business owners to reinvest the proceeds of business sales into retirement or new ventures without a punishing tax cost.