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Variation of Class Rights in Australian Companies: Section246B and Preference Shareholders 

24 September 2026

Changes to preference share rights can affect dividend priority, voting power and returns on an exit. This article examines the section 246B procedure, deemed variations, the one month window for challenging a change and the separate remedies available for shareholder oppression in Victoria.

Table of Contents

Key Takeaways

  • Whether a company can change the rights attached to your preference shares depends on the company’s constitution and the Corporations Act 2001 (Cth); any constitutionally prescribed procedure must be followed.
  • If the constitution is silent, section 246B requires a company special resolution plus either a special resolution of the affected class or written consent from members holding at least 75% of the votes in that class.
  • Section 246C can create 'deemed' variations—for example, issuing equally ranked new preference shares may vary existing preference rights even if the existing wording is unchanged.
  • Where the class has not unanimously agreed, holders with at least 10% of the class votes can apply under section 246D to set aside the variation within one month of the change; the court will only set it aside if unfair prejudice to the applicants is shown.
  • Separate remedies (sections 232–233 for oppression) may still be available; affected shareholders should preserve the constitution, issue documents, voting records and valuation evidence and act promptly to meet statutory time limits.

Quick Answer

Can a company change your preference share rights without your agreement?

A variation of class rights does not always require every shareholder’s agreement. The company must follow the procedure in its constitution. If no procedure applies, section 246B requires a company special resolution plus either a class special resolution or written consent from holders of at least 75 per cent of the class votes.

Where the class has not unanimously agreed, holders of at least 10 per cent of its votes may apply under section 246D to set aside the variation within one month after it is made. The court assesses whether the variation would unfairly prejudice the applicants.

The relevant threshold concerns votes within the affected class, not the shareholder’s percentage of the company overall.

For business owners and investors in Victoria, the answer depends on the company’s constitution and the Corporations Act 2001 (Cth). A variation of class rights in Australia must follow the applicable section 246B procedure, and an individual shareholder’s objection does not necessarily prevent approval. 

If the constitution specifies a procedure, the company must follow it. Otherwise, section 246B requires a special resolution of the company plus either a special resolution of the class or written consent from members holding at least 75 per cent of the votes in that class. 

A proposed conversion, altered dividend priority, or new preference share issue requires careful examination of the existing rights and terms of issue. Dilution alone does not establish that class rights have been varied. 

Where the class has not unanimously agreed, members holding at least 10 per cent of its votes may make a section 246D application to set aside the change. The one month window runs from when the change is made, making prompt review of the resolutions and supporting documents essential. 

What Law Governs the Variation of Class Rights in Australia? 

The Corporations Act 2001 (Cth), particularly sections 246B–246D, governs changes to class rights for companies in Victoria. Section 254A separately requires specified preference share rights to be recorded in the constitution or approved by company special resolution before issue. 

Section 246B procedure starts with the constitution. If it prescribes a variation procedure, that procedure must be followed. Otherwise, a company special resolution is required together with either a special resolution of the class or 75 per cent written consent. The latter means consent from members holding at least 75 per cent of the votes in the class, not 75 per cent of its shareholders. 

Section 246C deemed variations capture specified transactions even without an express amendment to existing rights. For example, issuing equally ranking preference shares varies existing preference rights unless authorised by their terms of issue or the constitution as it stood when those existing shares were issued. 

Without unanimous class agreement, members meeting the 10 per cent threshold of class votes can make a section 246D application to set aside the variation. The one month window begins when the variation is made. The court must find unfair prejudice to the applicants to set it aside; disagreement alone is insufficient. Section 246F separately imposes applicable ASIC lodgement obligations. 

The cases distinguish permissible constitutional changes from abuses of majority power. In Peters’ American Delicacy Co Ltd v Heath (1939) 61 CLR 457, the High Court upheld an alteration favouring fully paid shareholders over partly paid shareholders. Unequal consequences did not, by themselves, establish a fraud on the minority. The decision concerns constitutional alteration, rather than the current statutory class approval procedure. 

In Gambotto v WCP Ltd (1995) 182 CLR 432, the High Court invalidated a constitutional amendment permitting compulsory acquisition of minority shares. The majority required a proper purpose and fairness; anticipated tax savings and administrative benefits did not establish the necessary purpose. Gambotto is a related expropriation authority, not a section 246B case. 

Separately, sections 232 and 233 allow relief for oppressive or unfairly prejudicial conduct, potentially including a share buyout. For a preference shareholder, satisfying the voting procedure therefore does not dispose of every possible challenge. 

Three Investors Discussing Shared Concerns Around A Café Courtyard Table
Shareholders may combine their voting interests to meet the threshold for a section 246D application.

How Do Courts Assess a Variation of Class Rights in Australia? 

What rights attach to the shares being changed? 

The starting point is the legal entitlement attached to the shares. For a Victorian business owner holding preference shares, the constitution, original terms of issue and approving resolutions should establish dividend priority, voting rights and capital repayment entitlements. Compare those provisions with the proposed changes. A reduction in investment value does not, by itself, identify which class right has been varied. 

Section 246C deemed variations must also be checked. A transaction can trigger class protection even where the company leaves the wording of existing rights untouched. 

Has the company obtained the correct approvals? 

Compliance with the section 246B procedure requires checking the applicable constitutional provisions before counting votes. Where the statutory default applies, company approval and class approval are separate requirements. A special resolution of the class generally requires at least 75 per cent of votes cast by members entitled to vote. By contrast, 75 per cent written consent requires members holding at least that proportion of all votes in the class. 

Meeting notices, quorum requirements, proxies, and signed consents should be examined alongside the resolutions. A headline approval percentage cannot establish compliance without identifying the voting entitlement and denominator used. 

Who can challenge the variation, and when does it take effect? 

Where class agreement is not unanimous, the 10 per cent threshold concerns votes within the affected class, not the company overall. Eligible holders can combine their voting interests and appoint a representative applicant in writing. 

A section 246D application to set aside must be filed within the one month window after the variation is made. Under section 246D(3), the variation takes effect after that month if no application is made, or when an application is withdrawn or finally determined, subject to the court’s decision. 

What evidence establishes unfair prejudice? 

The court needs evidence explaining why the variation would unfairly prejudice the applicants. Useful material may include valuations, dividend forecasts, and calculations showing how capital would be distributed before and after the change. The company’s stated financing needs and any benefits offered to affected holders should also be examined. 

For example, removing a dividend priority without compensation raises questions about the value surrendered and who receives the corresponding benefit. The analysis must address unfairness, rather than merely record opposition. Under section 246D(5), the court must confirm the variation if unfair prejudice is not established. 

When should oppression relief also be considered? 

Sections 232 and 233 warrant separate consideration where the proposal forms part of oppressive or unfairly prejudicial conduct, such as arrangements favouring controllers at other shareholders’ expense. The evidence should address the overall conduct and the remedy sought, potentially a buyout. Procedural compliance does not itself resolve that inquiry. 

What Disputes Arise When Companies Change Preference Share Rights? 

Disputes over the variation of class rights in Australia arise during capital raisings, preference share conversions and changes to distribution priorities. For a Victorian investor, the commercial concern is often specific: losing priority on a sale, sharing a preferred return with additional investors, or being converted into ordinary equity before an exit. The documents must establish whether that outcome was authorised when the investment was made or requires fresh approval. 

Forced conversion produced a concrete dispute in DnaNudge Ltd v Ventura Capital GP Ltd [2023] EWCA Civ 1142. Ordinary shareholders used a majority notice mechanism to attempt to convert preference shares into ordinary shares, removing enhanced distribution rights. The English Court of Appeal upheld the conclusion that the conversion required the separate class consent prescribed by the articles. Although an English constitutional interpretation decision, not an Australian section 246B authority, it illustrates why an apparently automatic conversion clause cannot safely be read apart from class protection provisions. 

Further preference share issues create a different conflict. Existing investors may retain their stated dividend and capital rights but must share the available funds with new holders ranking equally. Under section 246C deemed variations, the issue requires examination of the original terms and the constitution in force when the existing shares were issued. A general power to raise capital should not be treated as conclusive authorisation for the issue. 

Approval records can become decisive where directors rely on informal investor agreement, unsigned consents or a company resolution that does not separately address the class. Under the default section 246B procedure, support for the financing transaction does not dispense with the required class approval. Advisers need the actual resolutions, voting records and executed consents, not a summary that investors supported the deal. 

Timing creates immediate pressure when negotiations continue after approval. The one month window for a section 246D application to set aside runs from the variation, not from the breakdown of settlement discussions. Shareholders should establish the relevant date and their combined class voting strength while negotiations remain open. Delay can compromise that statutory challenge even while the commercial dispute remains unresolved. 

Are proposed share changes putting your investment rights at risk?

A conversion, new preference share issue or change to dividend priority can affect the value of your holding. Our shareholder dispute lawyers can review the constitution, approval records and financial impact, assess available remedies and identify any urgent filing deadline.

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What Evidence and Strategy Matter Before Challenging or Defending a Class Rights Variation? 

Start by identifying the result sought: preserving preference rights, negotiating compensation or securing an exit subject to share transfer requirements. Setting aside a variation and obtaining a buyout are different remedies. The evidence and proposed proceedings should support the commercial objective, with the cost of litigation assessed against the value at stake. 

Before negotiations absorb the available time, establish the date of the variation and whether the applicants meet the 10 per cent threshold of class votes. For a section 246D application to set aside, record the one month window and obtain advice on filing within it. Correspondence seeking documents or proposing a standstill should not be assumed to suspend that statutory deadline. 

Preserve the constitution applicable when the shares were issued, subscription documents, class resolutions, signed consents, and the share register. Prepare a comparison showing the existing rights, the proposed changes, and each required approval. Keep procedural defects separate from evidence of unfair prejudice: they raise different questions and may require different relief. 

Financial evidence should explain the effect on the holding. Model dividend payments and sale or liquidation distributions under both sets of rights, stating assumptions about company value, debt and future funding. A valuation that ignores the preference terms may obscure the actual loss. 

For the company defending the proposal, retain contemporaneous evidence of the funding need, alternatives considered, and treatment of affected investors. A commercial rationale can inform the fairness assessment but does not replace required approval. Assess any oppression claim separately, including whether a negotiated buyout offers a workable resolution. 

Frequently Asked Questions 

Can a company change my preference share rights without my consent? 

Your individual consent is not always required. The company must follow any variation procedure in its constitution. If none applies, the section 246B procedure requires a company special resolution plus either a special resolution of the class or written consent from members holding at least 75 per cent of class votes. Approval can therefore bind an objecting holder, subject to available challenges. 

Does issuing more preference shares change my class rights? 

It can, even if the wording of your existing rights stays the same. Under section 246C deemed variations, issuing equally ranking preference shares varies existing preference rights unless authorised by their terms of issue or the constitution in force when they were issued. The original documents are therefore decisive. Other share issues require separate assessment; dilution alone does not establish a class rights variation. 

How long do I have to challenge a class rights variation? 

A section 246D application to set aside must be made within one month after the variation is made. Where class agreement is not unanimous, applicants must hold at least 10 per cent of the votes in that class. The one month window does not run from when negotiations fail, or legal advice is obtained. Establish the relevant date promptly rather than waiting for discussions to conclude. 

Can I challenge the change if I hold less than 10 per cent? 

You may combine your class voting interests with other holders to meet the 10 per cent threshold. Your percentage of the company overall is not the relevant measure. Separately, an eligible member may seek oppression relief under sections 232 and 233 without meeting that threshold. That claim requires its own legal basis; it is not an automatic substitute for a section 246D challenge. 

Will the court cancel the variation if I object? 

An objection alone is insufficient. Under section 246D(5), the court may set aside the variation if it would unfairly prejudice the applicants and must confirm it if that is not established. Evidence should explain the effect on your rights and why that effect is unfair. A successful application does not itself give you a right to a share buyout. 

How Should You Respond to a Proposed Variation of Class Rights? 

A proposed change to preference shares should be assessed against the rights originally granted, the applicable approval procedure and its financial effect. For shareholders in Victoria, the immediate priority is to obtain the documents and establish whether the one month window for a section 246D application to set aside has begun. Majority approval does not, by itself, resolve questions of unfair prejudice or oppression. 

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Pentana Stanton Lawyers advises on shareholder disputes involving class rights, corporate control and exit arrangements. Book a consultation to review the proposed variation, assess the available remedies and determine whether negotiation or court proceedings best serve your position. 

This article is general information only and not legal advice. For advice specific to your circumstances, please contact our team. 

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