Two founders, 50/50. It feels fair on day one — and it is, right up until the first decision you genuinely disagree on. A company split down the middle has no majority, which means no mechanism for making a contested decision at all: not on strategy, not on spending, not on firing the person you co-founded with. The company doesn’t blow up. It freezes. Payroll runs, the product ships, and nothing that needs both signatures happens — including, eventually, the raise that was supposed to save it.
Deadlock is the one governance failure the Corporations Act 2001 (Cth) handles worst, which is exactly why your shareholders’ agreement has to handle it instead.
Where Deadlock Actually Comes From in Startups
The 50/50 founder company is the obvious case, but it’s not the only one:
- The 2–2 board. A seed round that adds an investor director to a two-founder board creates a four-seat table. Founders and investor won’t always vote in blocs — until the day they do.
- Reserved matters. A standard investor consent schedule gives an investor a veto over the decisions that matter: new issues, budgets, senior hires, exits. A withheld consent isn’t technically a deadlock — nobody’s vote is tied — but it produces the same frozen company, and most shareholders’ agreements never say what happens next.
- Special majority thresholds. A 75% special resolution requirement, or a contractual supermajority, hands any shareholder above the blocking percentage a veto they may one day use.
The common thread: deadlock is rarely a drafting accident. It’s the flip side of protections someone negotiated on purpose. Which is why the fix isn’t removing the vetoes — it’s deciding, in advance and in writing, how the company gets unstuck when one is exercised.
What the Law Gives You by Default (and Why You Don’t Want It)
Without a contractual mechanism, a deadlocked shareholder’s remedies live in the Corporations Act, and they’re grim. The oppression remedy under sections 232 and 233 requires conduct that is oppressive, unfairly prejudicial or unfairly discriminatory — and a genuine stalemate between equals, where each side simply votes its honest view, may not clear that bar at all. The remedy that actually fits deadlock is section 461(1)(k): winding up on the just and equitable ground, the courts’ long-standing answer to the two-person company whose working relationship — the quasi-partnership the company was built on — has irretrievably broken down.
Read that again: the statutory default for “we can’t agree” is killing the company. A court can order a buy-out under section 233 where oppression is made out, and courts treat winding up a solvent company as a last resort — but you’re now eighteen months and serious six figures into litigation, your cap table is discovery material, and no investor will touch the company while it’s on foot. Every mechanism below exists to keep you out of that courtroom.
The Escalation Ladder
Good deadlock clauses are staged, because most deadlocks are arguments that haven’t cooled yet. The standard ladder:
- Define the trigger tightly. A deadlock should mean a fundamental matter — something on a defined list — that has failed to pass at two consecutive properly convened meetings, or a reserved-matter consent withheld for a defined period. If any tied vote counts, the clause becomes a weapon for manufacturing deadlocks on trivia to reach the buy-sell stage.
- Escalate to principals. The dispute goes to named decision-makers — founders personally, the investor’s nominated partner — for good-faith negotiation over a short, fixed window. Drafted with certainty, these clauses are enforceable in Australia: the NSW Court of Appeal in United Group Rail Services v Rail Corporation NSW upheld an obligation to undertake genuine and good faith negotiations as sufficiently certain to bind.
- Mediate. A structured mediation with a defined appointment mechanism (the Resolution Institute or a state law society president appoints if the parties can’t agree) and a deadline. Most disputes that survive step 2 die here, because mediation is the first moment both sides price the alternative.
- Only then do the mechanical tie-breakers load.
Two tie-breakers short of a forced sale deserve a mention. A casting vote for the chair resolves board ties — the replaceable rule in section 248G provides one by default — but understand that in a 2–2 company a casting vote simply means whoever chairs, wins, which is why startup constitutions and shareholders’ agreements so often strip it out and why reinstating it selectively is a real design choice, not boilerplate. Expert determination works for deadlocks that are really valuation or accounting disagreements dressed up as disputes; it’s useless for “should we take this acquisition offer”.
Shotgun Clauses: The Buy-Sell Endgame
When the ladder runs out, buy-sell mechanisms resolve the deadlock by ending the shared ownership. The classic forms:
- Russian roulette (the shotgun). One side serves a notice naming a price per share. The recipient must either sell all their shares at that price or buy the initiator’s shares at the same price. The elegance is the pricing discipline: name a lowball price and you’ll be bought out at it; name a high price and you’ll pay it. In theory, only a fair price is safe to name.
- Texas shootout. Both sides submit sealed bids to buy the other out; highest bid wins and completes at that price.
- Dutch auction variant. Sealed bids state the minimum price each side would sell at; the higher bidder buys the other out, with the completion price often set by reference to the losing bid.
Here’s what the theory misses, and what makes these clauses genuinely dangerous on a startup cap table: every shootout mechanism assumes both sides can fund the purchase. The pricing discipline of a shotgun clause evaporates when one party knows the other can’t buy. A VC fund staring down a founder with a mortgage can serve a lowball notice in complete confidence that the founder can’t exercise the buy option — the “fair price” mechanism becomes a compulsory acquisition at a price the stronger party chose. The same asymmetry cuts between a salaried co-founder and a wealthy one. If you’re the less liquid party, a shotgun clause isn’t mutual deterrence; it’s a gun pointed at you, and agreeing to one should be a deliberate, priced decision — or refused in favour of a fair-value put/call determined by an independent expert, with payment terms (instalments, vendor finance) that a human being can actually meet.
Exercise isn’t a free-fire zone either. A buy-sell triggered in strict compliance with its terms is ordinarily enforceable, but conduct around the trigger — engineering the deadlock, timing the notice to exploit a counterparty’s known illiquidity, using board control to starve them first — is the kind of conduct that invites a section 232 oppression claim and gives a court the hook to intervene.
And remember the mechanics: if the company rather than a shareholder is the buyer, you’re in selective buy-back territory under section 257D, with shareholder approval requirements and solvency constraints the clause has to accommodate. A departing founder’s unvested equity should never need the deadlock machinery at all — that’s what vesting and buy-back structures are for.
What to Actually Build In
For a two-founder company: a tight deadlock definition, the escalation ladder, a casting-vote decision made consciously (usually: no), and a fair-value put/call as the endgame rather than a shootout — unless both founders are genuinely similarly resourced, in which case a Russian roulette clause with a long fuse (90–120 days to complete, financing-friendly terms) is defensible. For a funded company: deal with withheld investor consents expressly — a deemed-escalation process beats pretending vetoes never bite. And in every case, write the mechanism before the first real fight, because the moment a deadlock exists, no one will agree to the clause that resolves it against them. The best deadlock clause is the one whose existence means it’s never used.
This article is general information only, not legal advice — the right deadlock mechanism depends on your cap table, your board structure and the real-world liquidity of the people on it. Viridian Lawyers advises Australian founders, startups and investors on shareholders’ agreements, governance design and shareholder disputes. If your shareholders’ agreement is silent on deadlock — or contains a shotgun clause you’ve never stress-tested — get in touch.
