How to Resolve a Dispute Between 50/50 Shareholders

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? Fast facts
  • Shareholder deadlock happens when equal or blocking voting power prevents a company from making a decision. Neither side can carry a resolution, so ordinary disagreements that would be resolved by a vote simply stop the business.
  • Start with your shareholders’ agreement and company constitution. These documents may already contain deadlock clauses, dispute resolution processes, or buy-sell mechanisms.
  • Many deadlocks can be resolved without going to court. Negotiation, mediation, and buy-outs are the first commercial options to explore.
  • A well-drafted deadlock clause may contain a buy-sell or shotgun mechanism. These allow one shareholder to set a price and force the other to buy or sell at that price.
  • Court remedies exist as a last resort. Oppression relief under ss 232–233, or a just and equitable winding up under s 461 of the Corporations Act, may be available if commercial options fail.

Disputes between 50/50 shareholders pose a serious risk to a business. Where two founders each hold half the company, neither can carry a resolution over the other’s objection, so a disagreement that would be resolved by a vote in any other company simply stops the business in its tracks.

Ideally, you avoid a situation like this altogether. But if you find yourself in a deadlock, you’ve got options. This guide breaks down what you can do to resolve the situation.

What is a shareholder deadlock in Australia?

A deadlock between shareholders occurs when the ownership and voting structure prevent the company from obtaining the approval needed for an important decision.

This situation can be common in:

  • Two-founder companies where the shares are held 50/50
  • Companies with two directors appointed by opposing shareholder groups
  • Businesses requiring unanimous approval for major decisions
  • Companies where quorum rules effectively allow one side to block meetings or resolutions

Keep in mind that shareholder deadlock isn’t an ordinary disagreement. A disagreement becomes a deadlock when the company can’t move forward because the parties involved can’t reach an agreement.

Why are 50/50 shareholder companies especially vulnerable to deadlock?

In a 50/50 shareholder company, neither shareholder has a voting majority. As a result:

  • One shareholder can block many ordinary decisions where the other side needs more than 50%.
  • Decisions requiring unanimous or special approval become even harder.
  • Removing the other shareholder is not straightforward.
  • Neither shareholder can simply force the other to sell without a contractual or legal basis.

Imagine two founders, each owning 50%. One wants to reinvest profits into growth, while the other wants dividends paid out. If the shareholders’ agreement requires both owners to approve the decision and neither will compromise, the company is deadlocked.

What should you check first when a shareholder deadlock occurs?

Several documents can guide you through the process of resolving shareholder disputes in Australia.

Shareholders agreement

First, review your shareholders’ agreement. Check for:

  • Deadlock clause
  • Dispute resolution process
  • Mediation or arbitration requirements
  • Buy-sell mechanism
  • Shotgun/Russian roulette clause
  • Compulsory transfer rights
  • Valuation provisions
  • Reserved matters
  • Voting thresholds
  • Escalation process

Use any guidance you find to go through negotiation, mediation, and then a buy-sell mechanism if an agreement still can’t be reached.

Company constitution

You should also check the rules set out in your company’s constitution. Review:

  • Voting rights
  • Quorum requirements
  • Director appointment/removal rules
  • Casting vote provisions
  • Share transfer restrictions
  • Meeting procedures

Corporations Act replaceable rules

If the constitution or agreement fails to cover the details above, statutory rules may affect governance. However, these don’t provide a simple commercial solution to most founder deadlocks.

Is the deadlock at the board level or the shareholder level?

Depending on the deadlock level, you may need to follow different resolution pathways.

  • Board deadlock: Directors can’t agree on a board decision. Examples include approving expenditure, hiring senior staff, entering into a major contract, or developing a business strategy.
  • Shareholder deadlock: Shareholders can’t approve a shareholder resolution. Examples include changing the constitution, approving certain share transactions, or decisions reserved for shareholder approval under the shareholders’ agreement.
Type of deadlockWho can’t agree?First document to check
Board deadlockDirectorsConstitution + shareholders agreement
Shareholder deadlockShareholdersShareholders agreement + constitution
50/50 founder deadlockOften bothBoth documents

How does a deadlock clause work?

A shareholders’ agreement deadlock clause, often included in a shareholders’ agreement, sets out what happens when the ordinary decision-making process fails.

  • Escalation between shareholders
  • Mediation
  • Arbitration
  • Chair’s casting vote where appropriate
  • Buy-sell mechanisms
  • Compulsory sale
  • Winding-up fallback

Including a deadlock clause in your shareholders’ agreement is a good way to prevent unsolvable disputes in the future.

What if there is no deadlock clause?

Without a pre-agreed mechanism, the practical options to resolve a dispute narrow to direct negotiation, mediation, negotiated buy-out, sale of the business, formal legal proceedings, or winding up in extreme cases.

Can shareholders resolve a deadlock through negotiation?

Yes. Negotiation should be the first commercial step. Identify the exact disputed decision, separate operational disagreement from broader relationship breakdown, document each side’s preferred outcome, identify what each shareholder is willing to compromise on, and consider whether the issue can be resolved without changing ownership.

Can mediation resolve a shareholder deadlock?

Sometimes, an external party can help you reach an agreement. Mediation can be useful when both shareholders still want the business to survive, trust has deteriorated but negotiation remains possible, the dispute involves several issues, or the shareholders need a neutral party to structure a settlement. Keep in mind that mediation isn’t the same as arbitration — the latter produces a binding decision when the parties have agreed to submit the dispute.

Can one shareholder buy out the other?

Yes, if the parties can agree and the contractual mechanism allows it. A shareholder transfer is funded personally by the acquiring shareholder. A share buy-back is regulated under Part 2J.1 of the Corporations Act 2001 (Cth) and funded by the company — it must not materially prejudice the company’s ability to pay creditors, and requires following specific procedures. In a 50/50 deadlock, a selective buy-back requires a special resolution passed without the selling shareholder’s vote, or a unanimous resolution — which is often where buy-back proposals stall.

When planning a buy-out, agree on who stays and who exits, determine the share value, and get tax advice before agreeing a price — a share sale is a CGT event, and a company buy-back can produce a deemed dividend as well as a capital gain. The small business CGT concessions may be available but have strict eligibility conditions.

What is a shotgun or Russian roulette clause?

A shotgun clause is a deadlock-resolution mechanism where one shareholder sets a per-share price, forcing the other to either buy the offering shareholder’s stake or sell their own shares at that price. While it can resolve a dispute quickly, it heavily favours the shareholder with greater financial resources and requires careful drafting.

Can a shareholder bring an oppression claim?

Sections 232 and 233 of the Corporations Act 2001 allow a member to seek court relief when the company’s affairs, an act or omission, or a resolution is oppressive, unfairly prejudicial, or unfairly discriminatory. The test is commercial unfairness judged objectively. Deadlock alone doesn’t automatically establish oppression — there must be other issues. Possible orders include requiring shares to be bought, regulating future affairs, restraining conduct, or modifying the constitution.

Can a company be wound up due to a shareholder deadlock?

Winding up is the clear last resort. Under section 461 of the Corporations Act, the court can wind up a company where it is just and equitable to do so. An entrenched deadlock in a closely held company may support a just and equitable winding-up application if the company can no longer function as intended — but winding up destroys value and should not be treated as the default solution.

What should you do if your company is currently deadlocked?

Identify the exact decision causing the deadlock. Confirm whether the dispute is at the board or shareholder level. Review the shareholders’ agreement and constitution. Check voting, quorum, and deadlock provisions. Avoid unilateral steps that may breach duties. Attempt structured negotiation, then mediation or arbitration. Consider a buy-out or company sale. Obtain legal advice before commencing oppression or winding-up proceedings.

Where both shareholders are also directors, director duties continue throughout the dispute. You cannot use company funds to finance your side of the dispute, and you cannot act in your own interests at the company’s expense while the deadlock plays out.

How can businesses prevent shareholder deadlock?

The best way to resolve shareholder deadlock is to avoid it altogether. Draft a clear shareholders’ agreement that covers reserved matters, voting thresholds, dispute escalation, deadlock mechanisms, a valuation process, buy-sell provisions, director appointment and quorum, and exit triggers. Contact a Lawpath lawyer to include these clauses in your shareholders’ agreement from the start.

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