How does a share buyback work in Australia?

The company passes a board resolution (and, where required, a shareholder resolution), makes a solvency declaration, notifies ASIC, pays the buy-back consideration to the selling shareholder, cancels the bought-back shares, and lodges a completion notice with ASIC.

What is the 10/12 limit in a buyback?

The 10/12 limit caps the shares a company can buy back without shareholder approval at 10 per cent of the smallest number of shares on issue during the preceding 12 months. It applies to on-market and equal access buy-backs only.

Are selective buybacks allowed?

Yes, but a selective share buy-back requires approval by special resolution, at least 75 per cent of votes cast at a general meeting. The selling shareholder and their associates are excluded from voting on the resolution.

How does the ATO treat share buybacks for tax?

The ATO splits the buy-back consideration into a dividend component (the excess over the per-share amount of the company's share capital account) and a capital component that triggers a CGT event. Franking credits may attach to the dividend component.

Do I lose my shares in a buyback?

Shares that are bought back are generally cancelled by the company and cease to exist. The selling shareholder receives the agreed buy-back price but no longer holds those shares. Proprietary companies cannot hold treasury shares.

What ASIC forms must be lodged and when?

Companies must lodge a notice of intention with ASIC before the buy-back commences and a notice of completion after the buy-back is finalised. Both are lodged through the ASIC Regulatory Portal. Listed companies must also meet ASX announcement obligations concurrently.

Is Stock Buyback Legal in Australia in 2026? a Practical Guide for Lawyers and Companies

Yes, stock buyback is legal in Australia, and the statutory framework governing it is found in Part 2J.1 of the Corporations Act 2001 (Cth). Companies may buy back their own shares provided they follow specific approval, solvency, lodgement and disclosure procedures administered by ASIC. The question for directors, in-house counsel and advisers in 2026 is not whether a buy-back is permitted but how to structure it, particularly now that the ATO has refreshed its guidance on share buy-back tax treatment. This guide maps every compliance step, from board resolution through ASIC lodgement to ATO reporting, so practitioners can execute a buy-back with confidence.

Last reviewed: 23 June 2026.

Types of Share Buy-Backs: On-Market, Off-Market, Selective and Equal Access

Before embarking on any buy-back, the company must identify the correct type. The Corporations Act and ASIC recognise several distinct categories, each carrying different approval thresholds, timing rules and tax consequences. Choosing the wrong category, or mixing procedures, can invalidate the transaction and expose directors to personal liability.

On-market buy-backs (ASX rules)

An on-market buy-back is available only to companies listed on the ASX. The company purchases its own shares through the ordinary course of trading on the exchange, in the same way any other buyer would. ASX Listing Rules impose additional requirements, including the obligation to announce the buy-back before it begins and to report daily buy-back activity to the market. On-market buy-backs are capped by the 10/12 limit (explained below) unless shareholders approve a larger programme. They are popular for capital management because they involve no individual negotiation with sellers and offer pricing transparency.

Off-market share buy-backs

An off-market share buy-back occurs outside a securities exchange. The company makes an offer directly to shareholders, either to all shareholders equally or to selected shareholders. Off-market buy-backs are common among private companies (which have no exchange listing) and are also used by listed companies when they wish to offer a fixed price or a price determined by tender. The tax treatment of off-market buy-backs is a critical planning consideration, especially after the 2023 legislative changes to franking rules and the ATO’s updated guidance.

Selective vs equal access

An equal access buy-back offers every shareholder in a class the same opportunity to participate on the same terms. A selective share buy-back targets specific shareholders and requires a special resolution (75 per cent majority) with the selling shareholder excluded from voting. This distinction drives most of the governance complexity in buy-back transactions.

The Legal Framework, Corporations Act, ASIC Share Buy-Back Requirements and Shareholder Approvals

Part 2J.1 of the Corporations Act 2001 provides the statutory foundation for share buy-backs. A company may buy back its own shares if it follows the procedures set out in the Act, the buy-back does not materially prejudice the company’s ability to pay its creditors, and the company complies with any additional requirements in its constitution. ASIC oversees compliance and maintains detailed guidance on the procedural steps companies must follow.

Shareholder approval routes

Not every buy-back requires shareholder approval. The approval pathway depends on the type and scale of the buy-back:

No shareholder approval needed, an on-market or equal access buy-back of 10 per cent or less of the company’s smallest share count in the preceding 12 months (the 10/12 limit) requires only a board resolution and ASIC notification.
Ordinary resolution required, an on-market or equal access buy-back that exceeds the 10/12 limit must be approved by ordinary resolution (simple majority) at a general meeting.
Special resolution required, a selective share buy-back must be approved by a special resolution (at least 75 per cent of votes cast), with the selling shareholder excluded from voting.

The 10/12 limit share buyback, plain-English explanation

The 10/12 limit is the maximum number of shares a company can buy back in a 12-month period without obtaining shareholder approval. It is calculated as 10 per cent of the smallest total number of shares on issue at any point during the preceding 12 months. If the company has issued new shares or cancelled shares during that period, the denominator adjusts downward to the lowest point. Any buy-back that would cause the total shares bought back in the rolling 12-month window to exceed this figure triggers the need for an ordinary resolution. The 10/12 limit applies to on-market and equal access buy-backs, it does not replace the special-resolution requirement for selective buy-backs.

Buy-back type	Approval threshold	Who may vote?
On-market or equal access (within 10/12 limit)	Board resolution only	N/A, no shareholder vote
On-market or equal access (exceeds 10/12 limit)	Ordinary resolution (50%+1)	All shareholders in the class
Selective buy-back	Special resolution (75%+)	All shareholders except the selling shareholder and associates
Employee share scheme buy-back	Ordinary resolution	All shareholders (scheme participant excluded if selective)

Step-by-Step Procedure for Running a Compliant Buy-Back

Practitioners advising on whether a stock buyback is legal in Australia need a transaction-ready checklist. The steps below follow the sequence mandated by the Corporations Act and ASIC’s published guidance.

Board minutes and solvency statement (sample wording)

The process starts with a board resolution. Directors must resolve to undertake the buy-back, confirm the type (selective, equal access or on-market), set the terms (price or price range, number of shares, timetable) and make a solvency declaration. Sample board resolution language:

“RESOLVED that the Company buy back up to [number] fully paid ordinary shares at a price of $[X] per share on an [equal access / selective] basis, subject to compliance with Part 2J.1 of the Corporations Act 2001 (Cth) and the Company’s constitution. The directors have formed the opinion, on reasonable grounds, that the Company will be able to pay its debts as and when they become due and payable and that the buy-back will not materially prejudice the Company’s ability to pay its creditors.”

Each director should sign a solvency declaration. This is not a mere formality, directors face personal liability under section 588G if the company trades while insolvent, and a buy-back that depletes cash reserves can trigger that liability.

Shareholder notice content and timing

For buy-backs requiring shareholder approval, the company must issue a notice of meeting containing:

The terms of the buy-back (number of shares, price, timetable).
An explanation of the effect on the company’s capital structure.
A statement of reasons for the buy-back.
For selective buy-backs: a statement identifying the selling shareholder and the reasons for selecting that shareholder.
For listed companies: any ASX-required disclosures, including the impact on earnings per share.

Notice periods follow standard meeting notice requirements under the Act, at least 28 days for public companies and 21 days for proprietary companies (unless the constitution specifies otherwise).

ASIC share buy-back lodgement steps and forms

ASIC must be notified at key stages. The company lodges notifications through the ASIC Regulatory Portal. Critical lodgements include:

Before the buy-back: Lodge a notice of intention to carry out a buy-back (within the prescribed timeframe before the buy-back commences).
After shares are bought back: Lodge a notice confirming the buy-back has occurred, including the number of shares cancelled and the consideration paid.
Update the share register: Cancel the bought-back shares (or, in limited circumstances, hold them as treasury shares if permitted by the constitution and the Act).

Listed companies must simultaneously comply with ASX announcement requirements. Failure to notify ASIC is an offence and may also give shareholders grounds to challenge the buy-back’s validity.

Step	Timing	Responsible party
Board resolution and solvency declaration	Day 0	Directors / company secretary
Lodge ASIC notice of intention	Day 1–14 (before buy-back begins)	Company secretary
Issue shareholder notice and meeting papers (if required)	Day 1–7	Company secretary / legal counsel
Hold general meeting and pass resolution (if required)	Day 28–35 (public) / Day 21–28 (proprietary)	Chair / company secretary
Execute buy-back (payment and transfer)	Settlement date per buy-back terms	Directors / treasury
Cancel shares and update register	Immediately on settlement	Company secretary
Lodge ASIC notice of completion	Within prescribed period post-settlement	Company secretary
Complete ATO reporting (dividend/CGT components)	By lodgement date for relevant tax return	CFO / tax adviser

Solvency Test and Evidence, How to Satisfy Directors

The solvency test is arguably the most important safeguard in the buy-back process. Under the Corporations Act, a company must not buy back shares if there are reasonable grounds to suspect the company is or would become insolvent as a result of the buy-back. Directors bear personal liability for authorising a buy-back while the company is insolvent.

To discharge their obligations, directors should assemble and review evidence including:

Cashflow forecasts: Projections covering at least 12 months post-buy-back, stress-tested against downside scenarios.
Balance sheet analysis: Confirming the company’s net assets exceed its liabilities after the buy-back consideration is paid.
Independent accountant’s comfort letter: Particularly advisable where the buy-back consideration is substantial relative to the company’s free cash.
Legal opinion: Confirming compliance with Part 2J.1 and the company’s constitution.
Aged creditors report: Demonstrating no overdue debts that could indicate financial distress.

The solvency declaration should be made as close as practicable to the date of payment. A declaration made weeks before settlement may not protect directors if the company’s financial position deteriorates in the interim.

When to get expert opinions and audit comfort

Industry observers expect regulators to scrutinise buy-back solvency declarations more closely where the company is in financial difficulty or the buy-back consideration is large relative to net assets. In those circumstances, obtaining a formal solvency opinion from an independent accountant or auditor, and recording it in the board minutes, provides a defensible evidentiary trail. For selective buy-backs involving related parties, an independent expert report on the fairness of the buy-back price is strongly recommended, even where not strictly required by the Act.

Share Buy-Back Tax Treatment Australia, ATO Guidance, CGT and Payment Characterisation

The tax consequences of a share buy-back depend on the type of buy-back, the shareholder’s circumstances, and whether the buy-back is on-market or off-market. The ATO’s guidance on share buy-backs provides the authoritative framework. Following the 2023 legislative changes that aligned the tax treatment of off-market buy-backs by listed companies with on-market buy-backs (removing the ability to stream franking credits at a premium), the share buy-back ATO landscape has shifted significantly.

Under the ATO’s framework, the buy-back consideration is split into two components:

Dividend component: The portion of the buy-back price that exceeds the company’s share capital account (on a per-share basis). This is treated as a frankable dividend and may carry franking credits.
Capital component: The remainder, equal to the per-share amount of the company’s share capital account. This triggers a CGT event for the selling shareholder.

ATO practical steps for reporting and withholding

The company must determine the dividend and capital components of the buy-back price and advise participating shareholders of the split. For the dividend component, the company may frank the dividend and must issue a distribution statement showing any franking credits attached. For the capital component, the shareholder calculates a capital gain or loss by comparing the capital component against their cost base for the shares. The company must also withhold tax on any unfranked portion of the dividend paid to non-resident shareholders, in accordance with ATO withholding obligations.

Practitioners should note that the 2023 changes apply to off-market buy-backs by listed public companies. The likely practical effect for 2026 transactions is that listed companies can no longer structure off-market buy-backs to deliver a larger franked dividend and smaller capital component, the consideration is now split in the same way as an on-market buy-back.

Worked example: on-market vs off-market tax outcomes

Factor	On-market buy-back	Off-market buy-back (listed company, post-2023)
Buy-back price per share	$10.00 (market price)	$10.00 (tender / fixed price)
Share capital account per share	$4.00	$4.00
Dividend component	$6.00	$6.00
Capital component (CGT event)	$4.00	$4.00
Shareholder cost base per share	$3.00	$3.00
Capital gain	$1.00 ($4.00 − $3.00)	$1.00 ($4.00 − $3.00)
Franking credits available	At company’s discretion	At company’s discretion (same basis post-2023)

For private company share buy-backs in Australia, the pre-2023 rules continue to apply. The ATO may allow a different split between dividend and capital components for off-market buy-backs by private companies, potentially delivering more favourable franking outcomes. Practitioners advising private companies should obtain specific ATO guidance or a private ruling where the buy-back consideration departs significantly from market value.

Practical Issues, Conflicts, Related-Party Exits and Selective Buy-Backs

A selective share buy-back targeting a specific shareholder raises governance and fairness concerns that go beyond the statutory approval threshold. Directors must consider:

Conflict of interest: Any director who is also the selling shareholder (or an associate) must declare the conflict and, in most cases, abstain from both the board vote and the shareholder vote.
Related-party implications: If the selling shareholder is a related party of the company, the buy-back may also require approval under the related-party provisions in Chapter 2E of the Corporations Act.
Pricing fairness: The buy-back price should be supportable by reference to an independent valuation, particularly where shares are unlisted and there is no observable market price.
Minority protection: Remaining shareholders must not be unfairly prejudiced. A buy-back at an inflated price depletes company assets to the detriment of non-participating shareholders.
Continuous disclosure (listed companies): The buy-back and its terms may constitute price-sensitive information requiring immediate ASX disclosure.

Valuation evidence and independent expert reports

For selective buy-backs of unlisted shares, an independent expert report on the fair market value of the shares provides critical protection for directors and reassurance for remaining shareholders. The expert should be qualified (typically a registered valuer or chartered accountant with valuation credentials) and should disclose any conflicts. While the Act does not mandate an independent expert report for every selective buy-back, early indications suggest that courts and regulators view the absence of one as a risk factor when assessing directors’ conduct.

Private Company Share Buy-Back, Simplified Steps and Pitfalls

The share buy-back procedure for a private company follows the same statutory framework as for public companies, but with some practical differences:

Constitution check: Many proprietary company constitutions contain pre-emption rights or restrictions on share transfers that interact with the buy-back process. Review the constitution before proceeding.
Fewer shareholders: In a company with two or three shareholders, a selective buy-back can effectively change control. Ensure the remaining shareholders understand and consent to the implications.
Shorter notice periods: Proprietary companies may give 21 days’ notice (rather than 28 for public companies) for general meetings, unless the constitution specifies otherwise.
Tax treatment: Off-market buy-back tax rules for private companies retain the ability to split consideration into a larger dividend component, subject to ATO guidance and potential anti-avoidance provisions.
Share cancellation: Bought-back shares are typically cancelled. The Corporations Act does not permit proprietary companies to hold treasury shares.

A common pitfall for private companies is failing to update the share register and lodge ASIC notifications promptly after the buy-back. Even where the buy-back itself is procedurally valid, delayed ASIC filings create compliance exposure.

Practical Timeline and Worked Example

Consider a hypothetical scenario: Company X (a proprietary company with 1,000,000 shares on issue) wishes to buy back 80,000 shares from a departing founder at $5.00 per share, a selective buy-back totalling $400,000.

Day 0: Board resolves to proceed. Directors review cashflow forecasts, aged creditors and a balance sheet confirming net assets of $2.4 million post-buy-back. Solvency declaration signed.
Day 1: Lodge ASIC notice of intention. Issue notice of general meeting (special resolution required, selective buy-back).
Day 22: General meeting held. Special resolution passed with 78 per cent of votes cast (departing founder excluded).
Day 25: Buy-back executed, $400,000 paid to departing founder. 80,000 shares cancelled and register updated.
Day 26: Lodge ASIC notice of completion.
Tax reporting: Company advises the departing founder that $240,000 of the consideration is a dividend component (franked) and $160,000 is a capital component. The founder calculates a CGT event against their cost base.

Entity type	ASIC lodgement required?	Special notes
ASX-listed public company	Yes, notice of intention and notice of completion	Must also comply with ASX Listing Rules; continuous disclosure obligations; daily on-market reporting
Unlisted public company	Yes, same ASIC lodgements as listed company	No ASX rules, but Chapter 2E related-party provisions may apply
Proprietary (private) company	Yes, same ASIC lodgements	Shorter meeting notice periods; off-market tax split may differ; no treasury shares permitted
Small proprietary company	Yes, same ASIC lodgements	May have reduced financial reporting obligations but buy-back procedures unchanged

Conclusion, Is Stock Buyback Legal in Australia? Practitioner Checklist

Stock buyback is legal in Australia under Part 2J.1 of the Corporations Act 2001, subject to strict compliance with approval, solvency and lodgement requirements. The practical answer in 2026 is that companies can and do execute buy-backs routinely, but the margin for procedural error is narrow, and the tax consequences require careful structuring.

Every practitioner advising on a buy-back should confirm:

The buy-back type has been correctly identified (on-market, off-market, equal access or selective).
The 10/12 limit has been calculated and the correct approval threshold applied.
Directors have signed a solvency declaration supported by documentary evidence.
ASIC has been notified before the buy-back commences and after completion.
The ATO dividend/capital split has been calculated and communicated to shareholders.
All conflicts, related-party issues and continuous disclosure obligations have been addressed.

For guidance on structuring a share buy-back or any corporate finance matter in Australia, find a corporate lawyer in Australia through the Global Law Experts directory.

This article provides general information only and does not constitute legal or tax advice. Seek independent professional advice before acting on any matter discussed.

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This article was produced by Global Law Experts. For specialist advice on this topic, contact Fu Zhu at EXC LAW, a member of the Global Law Experts network.