Building Your Founding Team & Co-Founder Agreements in Australia

The leading cause of startup failure is not bad technology or a poor market — it's co-founder conflict. An estimated 65% of startups fail due to team issues, according to data cited by Open Forest. Founders who skip the hard conversations at formation — equity splits, roles, vesting, what happens if someone leaves — typically face those conversations under much worse circumstances: after the company has value, after emotions are high, and often in a legal dispute.

Australian founders have access to a clear, well-established framework for structuring co-founding teams. The key documents are:

• A shareholders agreement (SHA) — the private contract governing the relationship between founders as shareholders
• A company constitution (or reliance on ASIC's replaceable rules) — the company's public rulebook under the Corporations Act
• A Founder IP Assignment Deed — ensuring the company owns all the IP its founders have created
• Vesting provisions — ensuring equity is earned over time, not handed out on day one

These documents are not just legal formalities. They are the product of a structured conversation about what each founder is contributing, what they are committing to, and what happens if the arrangement changes. Doing this early — when goodwill is high and stakes are low — is far easier than doing it under pressure.

The answer is: before you incorporate, or as close to incorporation as possible. Once equity is issued and the company is operating, changing the structure requires legal documentation, potential tax implications, and unanimous agreement from all shareholders. The longer you wait, the harder it gets.

The founding team conversation should cover at minimum:

1. Equity split rationale — what percentage does each founder get, and why?
2. Vesting schedule — how does each founder earn their equity over time?
3. Roles and decision-making — who is CEO, who makes what decisions, what requires unanimous consent?
4. What happens if someone leaves — good leaver vs bad leaver provisions, share buyback mechanics
5. IP ownership — all pre-incorporation IP must be formally assigned to the company
6. Non-compete and confidentiality — obligations that survive departure

Many Australian startup lawyers recommend using a structured facilitated discussion (often called a "co-founder conversation" or using a formal equity split calculator) before engaging lawyers to draft documents. The conversation itself is as important as the legal documents — alignment on values and expectations reduces the likelihood of dispute far more than any contract clause.

There is no universally correct equity split — the right split reflects each founder's relative contributions, roles, commitment level, and future involvement. The two primary approaches, as discussed by Cake Equity's founder equity guide:

Equal split (e.g., 50/50 for two founders; 33/33/33 for three):

• Advantages: Simple; avoids perception of hierarchy; signals equal partnership and mutual respect
• Disadvantages: In a 50/50 split, when founders genuinely disagree on a critical decision, neither can override the other. This deadlock can paralyse the company, require expensive legal intervention, or result in a forced buyout. A 33/33/33 three-way split is more workable as a majority of two can override one.
• Critical mitigant: If you choose an equal split, your shareholders agreement must include robust deadlock resolution provisions — this is non-negotiable (see Section 4)

Differentiated split:

• Accounts for differences in: idea origination, technical vs commercial skill sets, full-time vs part-time commitment, capital contributed, industry connections, prior IP contributed to the venture
• More accurately reflects actual value contribution and long-term role in the business
• Harder to agree upfront but generally produces better long-term outcomes
• May create resentment if one founder later feels their contributions were undervalued

As a practical guide from Sprintlaw AU's shareholder agreement guide: use a formal equity split framework or engage a startup lawyer to facilitate the discussion. Document the agreed rationale in writing — even informally — so there is no ambiguity later about what the split was meant to reflect.

A majority stake (51%+) for one founder eliminates deadlock risk — the majority founder can resolve disagreements by exercising their voting power. This is structurally clean and preferred by many investors who worry about deadlocked companies.

However, a significant majority stake has trade-offs: the minority founder has limited power to protect themselves, the arrangement may feel unequal for a co-founder contributing equivalent work, and minority shareholders are vulnerable to majority decisions on salary, dilution, and exit terms. Minority protections in the shareholders agreement (reserved matters, drag-along, tag-along, pre-emptive rights) partially address this but do not replicate full equality.

The practical recommendation for equal-contribution co-founders: structure a 50/50 or near-equal split, invest heavily in deadlock resolution mechanics in the shareholders agreement, appoint a non-executive chairperson with a casting vote, and maintain open co-founder communication protocols as the company grows. Equal splits with strong governance are workable; they simply require more upfront legal investment. The Cake Equity guide provides a helpful framework for these discussions.

Vesting is the mechanism by which founders earn their equity over time rather than owning it outright from day one. Without vesting, a co-founder who leaves in year one retains their full equity stake — potentially a significant percentage of the company — despite making no further contribution. This is deeply unfair to remaining founders and is a major red flag for investors.

Virtually all institutional investors (VCs and most sophisticated angels) require all founders to be on a vesting schedule before they will invest, as noted by Open Forest. Founder vesting is not punitive — it aligns long-term incentives, protects the remaining founders if one leaves, and signals commitment to investors.

The market standard in Australia and internationally, as confirmed by Cake Equity and LegalVision's due diligence guide:

• 4-year total vesting period
• 1-year cliff — no shares vest during the first 12 months; 25% vests at the 12-month anniversary (the "cliff")
• Monthly vesting of the remaining 75% over the following 36 months (approximately 1/48 of total shares per month after the cliff)

Example for 1,000,000 shares: zero shares vest in months 0–11; 250,000 shares vest at month 12 (cliff); then approximately 20,833 shares vest each month through month 48. All shares are fully vested after 4 years.

In Australia, founder vesting is typically structured as reverse vesting — also called a share buyback mechanism. This is distinct from option-based vesting common in US startups. The mechanics:

1. All founder shares are issued immediately at incorporation at nominal value (e.g., $0.001 per share)
2. The company retains the right to buy back unvested shares at the original nominal value if the founder leaves before they are fully vested
3. As time passes, the company's buyback right over an increasing proportion of shares lapses
4. After 4 years (or the agreed vesting period), the company's buyback right has lapsed entirely — all shares are "fully vested"

Reverse vesting is preferred in Australia because issuing shares upfront and creating buyback rights is simpler under Australia's legal framework than creating forward-vesting share option plans at the founder level. The key feature: founders hold all their shares from day one (for voting purposes, dividend entitlements), but the company can claw back unvested shares at nominal value if a founder departs early.

Tax consideration: Directly-held founder shares may be subject to the employee share scheme (ESS) rules in the Income Tax Assessment Act 1997 (ITAA 1997), particularly Division 83A, if there is a real risk of forfeiture (i.e., the buyback right exists). Tax treatment at issuance vs vesting can have material implications. Engage a tax adviser or startup lawyer before implementing a reverse vesting structure to ensure founders do not face unexpected tax events on unvested shares. Open Forest's vesting guide discusses the tax nuances in more detail.

Accelerated vesting: Agreements should specify what happens on acquisition — does vesting accelerate in full (single trigger) or only if the founder is also dismissed without cause post-acquisition (double trigger)? Double trigger is generally preferred by investors as it provides an incentive for founders to remain post-acquisition.

A shareholders agreement (SHA) is a private contract between the shareholders and typically the company itself. It is the most important legal document a founding team creates — it governs the commercial relationship between founders and establishes the rules for major decisions, dispute resolution, and exits. Unlike the company constitution, the SHA is a private document not lodged with ASIC.

Core provisions for an Australian startup SHA, as described by Sprintlaw's shareholder agreement guide and Hall & Wilcox's SHA overview:

Roles and responsibilities:

• Titles, responsibilities, and minimum time commitment expectations for each founder
• Remuneration — salary, director fees, and approval thresholds for changes
• What constitutes "active" vs "passive" involvement, and the consequences of each

Decision-making and reserved matters:

• Decisions requiring unanimous consent — e.g., winding up, change of business, issuance of new share classes, major asset sales
• Decisions requiring a special majority (e.g., 75%) — e.g., significant expenditure, new debt, acquisitions
• Day-to-day operational decisions the board or CEO can make unilaterally
• Board composition, quorum, and casting votes

Vesting provisions: The 4-year/1-year cliff reverse vesting schedule should be documented in the SHA (and reflected in share certificates and the company's register of members).

IP assignment: Express provision that all IP created by founders in connection with the business is assigned to the company — reinforced by a separate Founder IP Assignment Deed.

Non-compete and confidentiality: Obligations on founders not to compete or use confidential information during and after their involvement with the company.

Deadlock — when two equal shareholders genuinely disagree and neither can override the other — is the most dangerous operational risk in a 50/50 co-founder arrangement. Without a deadlock mechanism, a genuine dispute can result in legal proceedings to wind up the company, even when the underlying business is healthy. Founders should treat deadlock provisions as essential, not optional.

Standard deadlock resolution mechanisms, as discussed in the LegalVision SHA vs constitution guide and Hall & Wilcox's SHA overview:

1. Escalation period: Before any formal mechanism triggers, the SHA requires a period of good-faith negotiation (typically 30–60 days) — often escalated to the most senior level within each founder's sphere
2. Casting vote: The chairperson of the board (who may be independent) is given a casting or deciding vote in the event of board deadlock — the simplest and cleanest mechanism
3. External mediator or umpire: An agreed third party (mediator, industry expert) makes a binding or advisory decision
4. Russian roulette (buy-sell clause): One party names a per-share price; the other party must either buy the first party's shares at that price or sell their own shares to the first party at that same price. This mechanism is self-calibrating — the party naming the price has an incentive to name a fair price, since the other party can choose which direction the transaction goes.
5. Shotgun clause: A variant of buy-sell — either party can trigger a compulsory acquisition of the other's shares at a stated price

For most early-stage startups, a combination of escalation period + independent chairman casting vote is the most practical first-line deadlock mechanism. Russian roulette clauses are appropriate as a last resort but can create anxiety in the relationship if invoked prematurely.

Drag-along and tag-along rights govern what happens when a shareholder wants to sell their shares — particularly in the context of an acquisition. They are fundamental provisions in any well-drafted shareholders agreement.

Drag-along rights: Majority shareholders can compel minority shareholders to sell their shares on the same terms in an acquisition. Without drag-along rights, a minority shareholder could block an acquisition that the majority wants to proceed with — a deal-killer that can destroy years of value creation. Drag-along ensures that if a majority want to sell, the minority cannot hold the deal hostage.

Tag-along rights: Minority shareholders have the right to join a sale by majority shareholders at the same price and on the same terms. Without tag-along rights, the majority could sell their stake to a third party and leave the minority holding shares in a company now controlled by a new owner they had no say in choosing. Tag-along protects minority shareholders from being stranded.

Typical trigger thresholds and carve-outs (as outlined in Sprintlaw's SHA guide): drag-along typically triggers when 75–80%+ of shareholders vote to sell; tag-along typically applies to all shareholders regardless of size. Both rights should specify the price and terms conditions under which they can be exercised, and include carve-outs for small transfers to family trusts or related entities.

Leaver provisions define what happens to a departing founder's shares — both vested and unvested — when they leave the company. They are closely linked to the vesting schedule and are among the most heavily negotiated provisions in any founders' SHA.

Good leaver (typically: death, permanent disability, resignation due to the company's material breach, or termination without cause):

• The departing founder typically retains all vested shares
• Unvested shares may be repurchased by the company at fair market value (rather than nominal value)
• The treatment reflects that the departure was involuntary or for legitimate reasons

Bad leaver (typically: voluntary resignation without cause, serious misconduct, breach of the SHA, criminal conviction):

• Unvested shares are repurchased at nominal value (the original issue price, often fractions of a cent)
• In some agreements, even vested shares may be repurchased at a discount to market value for bad leavers
• The treatment reflects that the departure was detrimental to the remaining founders

Critical drafting point: The definitions of "good leaver" and "bad leaver" must be exhaustive and precise — ambiguous definitions lead to disputes. Consider every realistic departure scenario during drafting. The Hall & Wilcox SHA guide provides useful worked examples. Also consider share transfer restrictions — typically founders must offer shares to existing shareholders first (right of first refusal, ROFR) before selling to third parties.

These two documents often confuse founders. They serve different legal purposes and have different levels of privacy.

The comparison, as detailed by Adventum Legal and LegalVision:

• Company constitution: Based on the Corporations Act 2001 (Cth), s.135. Governs the company's internal management — share structure, director powers, meeting procedures. Must be lodged with ASIC and is publicly searchable. Binds all current and future shareholders as members of the company. Requires a special resolution (75% majority) to amend. If no constitution exists, the Corporations Act's "replaceable rules" apply automatically.
• Shareholders agreement: A private law contract. Not lodged with ASIC — completely private. Binds only the parties who sign it. Can address commercial matters inappropriate for a public document: salary negotiations, personal obligations of founders, buyout mechanics, IP assignment, non-competes. Amended as agreed by the parties.

A well-structured company has both documents, drafted consistently so they do not conflict. The SHA typically includes a clause stating that in the event of conflict between the SHA and the constitution, the SHA prevails as between the parties.

As noted by Sprintlaw: most early-stage startups rely on ASIC's replaceable rules (no separate constitution lodged) and rely on the SHA for all substantive governance. A separate, customised constitution becomes important when raising institutional capital, as investors often require specific protective provisions (anti-dilution, information rights, board representation) embedded in the constitution.

The Corporations Act's "replaceable rules" (which apply automatically when no separate constitution is lodged) provide a basic governance framework for an Australian Pty Ltd company. They cover director appointments and removals, meeting procedures, and share transfers at a high level — sufficient for the very earliest stage when there is only one or two founders and no external shareholders.

However, the replaceable rules do not address the commercial arrangements between co-founders: vesting, deadlock, leaver provisions, drag-along, IP assignment, or any of the substantive matters that protect founders from each other. Those provisions live in the shareholders agreement — which the replaceable rules do not provide and do not require.

The practical guidance: rely on the replaceable rules for the company's constitutional framework at incorporation, but never skip the shareholders agreement. The SHA is not optional — it is the document that makes the co-founding arrangement workable and legally enforceable. Engage a startup lawyer to draft both documents (or at minimum the SHA) as soon as you have two or more founders.

Use this checklist to get your founding team structure right from day one.

Before incorporating:

• ☐ Have a structured co-founder conversation covering equity split rationale, roles, vesting expectations, and what happens if someone leaves — document the agreed position in writing
• ☐ Use a formal equity split framework or calculator to assess each founder's relative contribution (idea, skills, commitment, capital, IP)
• ☐ Decide on vesting structure: confirm you will use a 4-year/1-year cliff reverse vesting schedule (market standard) unless you have specific reasons to deviate
• ☐ Identify all IP each founder has created that is related to the business and will need to be assigned to the company

At incorporation:

• ☐ Engage a startup lawyer to draft a founders' shareholders agreement covering: equity split, vesting/reverse vesting, roles and reserved matters, deadlock resolution, drag-along, tag-along, good/bad leaver provisions, IP assignment, and non-compete obligations
• ☐ Execute the shareholders agreement and have all founders sign — do not operate without one
• ☐ Execute a Founder IP Assignment Deed assigning all pre-incorporation IP from each founder to the company — this should happen at the same time as or immediately after incorporation
• ☐ Issue shares at nominal value with reverse vesting conditions documented in the share register and SHA
• ☐ Decide whether to adopt a separate company constitution or rely on the replaceable rules — note that you will likely need a customised constitution before your first institutional raise

Ongoing (review annually and at key milestones):

• ☐ Update the IP Assignment Deed or include provisions in employment contracts as new employees are brought on
• ☐ Ensure all new contractor agreements include IP assignment clauses before work starts
• ☐ Review vesting schedules against the SHA before any equity grants, ESOP issuances, or fundraising rounds
• ☐ Before a fundraising round, review the SHA with your lawyer to ensure investor-standard protective provisions are in place — investors will require amendments
• ☐ Maintain a data room-ready IP register from day one: all trademark applications, patent filings, domain names, code repositories, and their confirmed ownership by the company

Q: We're best friends and trust each other completely — do we really need a shareholders agreement?
A: Yes, unconditionally. The shareholders agreement is not a statement of distrust — it is a mechanism that makes it easier for trusted friends to navigate difficult situations. The most acrimonious co-founder disputes arise between people who trusted each other so much they skipped the documentation. An estimated 65% of startups fail due to team issues, per data cited by Open Forest. A signed SHA is the single most important risk mitigation for a multi-founder company.

Q: What happens to a departing co-founder's unvested shares if we don't have a vesting agreement?
A: Without a vesting mechanism, all shares are held outright from the date of issue. A co-founder who leaves after 6 months retains their full equity stake — permanently. The remaining founders carry the workload, dilute further on investment, and still owe that departed founder a full cut of any exit. This scenario has destroyed many startups. Reverse vesting must be put in place at or immediately after incorporation — it cannot be retroactively imposed on shares already issued without the shareholder's consent.

Q: Can we do a 50/50 equity split and still raise VC funding?
A: Yes — 50/50 splits are common and VCs will invest in companies with them. The key requirement is robust deadlock resolution provisions in the SHA. VCs will scrutinise the governance structure during due diligence. If there is no clear mechanism to resolve a deadlock, they may require one to be inserted as a condition precedent to investment. Come to any investor conversation having already thought through your deadlock mechanics.

Q: If I contributed the original idea and code, should I get a larger equity stake?
A: It depends on the full picture. Idea origination and early code contribution are legitimate factors in a differentiated equity split — but the split should also account for the ongoing roles each founder will play, their full-time vs part-time commitment, and their complementary skills. The value of a startup is rarely in the original idea alone — execution is everything. Use an equity split calculator or facilitated discussion to weigh all factors, as recommended in the Cake Equity founder equity guide.

Q: How much does a shareholders agreement cost to draft in Australia?
A: A lawyer-drafted SHA for an early-stage startup typically costs $2,000–$5,000 depending on complexity. Online legal providers (Sprintlaw, LegalVision, Law Path) offer founder-focused SHA templates at the lower end. For a complex structure (multiple founders, different share classes, detailed vesting), engage a startup-specialist law firm. The cost is modest relative to the value of getting it right — and far cheaper than litigating a co-founder dispute without one.

Q: Should the IP Assignment Deed be a separate document from the shareholders agreement?
A: Best practice is to have a separate Founder IP Assignment Deed in addition to an IP assignment provision in the SHA. The SHA records the founders' agreement to assign IP; the IP Assignment Deed is the formal instrument of transfer and can be used as standalone evidence of ownership in due diligence, patent filings, and legal proceedings. As confirmed by IP Australia's "Who Owns IP?" page, ownership of IP must be clearly documented — a reference in the SHA alone is often insufficient for registered IP (patents, trademarks) where specific assignment documents are required by IP Australia's register.

There is no universally correct formula, but choosing the right framework early prevents the most corrosive founder disputes. Three approaches dominate Australian practice:

• Equal split — all founders receive identical stakes (e.g. 50/50 or 33/33/33). Simple and signals trust, but equal shares do not automatically mean equal contribution. Sprintlaw states plainly: "Equal splits are common, but they aren't automatically 'fair'.' Misaligned commitment is one of the most common causes of resentment — especially when equity is split evenly but effort is not.
• Contribution-weighted (Founder's Pie) — each founder scores against weighted factors: idea origination, business plan preparation, domain expertise, risk taken (e.g. quitting a job), and ongoing responsibility. Scores produce a percentage split that reflects actual relative contribution. Best suited to teams where inputs materially differ.
• Dynamic / Slicing Pie — equity shifts in real time as contributions of time (at an imputed hourly rate), money, IP, and relationships accumulate. Rarely formalised in Australian legal documentation, but sometimes used as a reference model in early discussions before fixing a permanent split. Slicing Pie explicitly states that time-based vesting schedules are unnecessary when using its model.

Trend data: Carta (2024) found that equal splits among two-person founding teams rose from 31.5% in 2015 to 45.9% in 2024. For three-person teams the figure jumped from 12.1% to 26.9%. The median two-founder split converged to 51/49 by 2024 (from 60/40 in 2019) — suggesting markets are trending toward near-equal but not exactly equal distributions. Investors, however, remain wary: Harvard Business School research (cited by M Accelerator) indicates that equal splits can signal founders avoided difficult early conversations.

The Founder's Pie method assigns numerical weights to each dimension of contribution, scores each founder, and derives a proportional split. Here is a worked example for a two-founder team — Alex (idea originator, building full-time, leading fundraising) and Jamie (technical co-founder, part-time for the first six months, no prior capital contribution):

Alex's share = 313 ÷ 512 = 61.1%; Jamie's share = 199 ÷ 512 = 38.9%. Rounded for simplicity: Alex 60%, Jamie 40%. Jamie's shares would be subject to a 4-year vest with a 1-year cliff. For a three-founder SaaS team where all three contribute equally from day one, M Accelerator documents a typical scored outcome of 40% (CEO carrying fundraising risk) / 35% (CTO as core IP creator) / 25% (COO joining three months later). Running the same model on your own numbers before any conversation with co-founders anchors the negotiation in objective data rather than emotion.

The market standard across Australian startups is 4-year vesting with a 1-year cliff, implemented as reverse vesting — all shares are issued at Day 1 at nominal value, but the company retains a contractual right to buy back unvested shares at that same nominal price if the founder leaves before the schedule completes. Viridian Lawyers frames the purpose directly: vesting "ensures equity is earned, not gifted."

Reverse vesting is preferred over forward vesting (where shares are granted progressively) because the founder is a registered shareholder from Day 1, preserving voting rights and keeping the CGT 12-month clock running from the original acquisition date — a significant tax advantage on exit.

Worked example — 100,000 shares issued at $0.001 each:

If a founder leaves at month 8: company buys back all 100,000 shares at $0.001 each (total $100). If a founder leaves at month 18: approximately 56,250 unvested shares are bought back at nominal value. The mechanism is embedded in the Shareholders Agreement and all buybacks must comply with Part 2J.1 of the Corporations Act 2001 (Cth). All schedules should also include double-trigger acceleration — if the company is acquired AND the founder is terminated within 12 months post-acquisition, unvested shares accelerate immediately. Sources: Viridian Lawyers, Sprintlaw, LegalVision.

A well-drafted Shareholders Agreement (SHA) is the single most important legal document a founding team can sign. Beyond the headline vesting provisions, LegalVision and Sprintlaw identify the following as non-negotiable:

• Pre-emptive rights (right of first refusal) — before issuing new shares or selling to a third party, existing shareholders must be offered them pro rata first. Without this clause, a founder can bring in an outside investor who dilutes everyone without consent.
• Drag-along rights — majority shareholders (typically 75%+) can compel minority holders to join a whole-company sale. Without drag-along, a single minority founder can block an exit and hold the company hostage.
• Tag-along rights — the mirror protection: minority shareholders can join a major stake sale on the same terms, ensuring they are not left behind when the majority exits.
• Good leaver / bad leaver provisions — define consequences when a founder's employment or directorship ends. Good leavers (death, incapacity, termination without cause) typically retain vested shares at market value. Bad leavers (voluntary resignation within 1–2 years, termination for misconduct) often sell at a 20% discount to fair market value or at nominal value for unvested shares. LegalVision confirms the 20% discount is a common market benchmark.
• Reserved matters — a list of decisions (issuing new shares, raising debt above a threshold, changing the business model, winding up) that require supermajority or unanimous shareholder approval, regardless of who controls the board day-to-day.
• Deadlock resolution — a staged process: negotiation, mediation, arbitration, casting vote, and ultimately a Russian Roulette / buy-sell clause where one party names a price and the other must buy or sell at that price. This is the backstop that prevents a 50/50 company from becoming permanently paralysed. See: Sprintlaw's deadlock guide.

No — in almost all cases, founders are excluded from the ESS startup concession. Australia's Employee Share Scheme (ESS) startup concession (Subdivision 83A-C of the Income Tax Assessment Act 1997) allows eligible employees to receive equity at a discount and defer or eliminate tax until they realise a gain. However, the scheme contains a critical ownership cap.

LegalVision states: "If your ESS qualifies for the startup tax concessions, you can only make offers to persons who own 10% or less of the company. This will disqualify most founders, as they tend to own more than 10% of the company." This is confirmed by the ATO's start-up concession guidance.

The practical implication: founders hold their shares as capital assets under the general CGT provisions, not as ESS interests. The two regimes are distinct and must not be confused. Founders who receive shares at nominal value at incorporation pay minimal tax at the time of issue because the discount is negligible. On exit, the 50% CGT discount applies for shares held more than 12 months — a key benefit of reverse vesting, which starts the CGT clock from Day 1.

The ESS startup concession remains highly valuable for employees you hire — it is simply not available to any shareholder holding more than 10% of the company. Structure your cap table and any ESOP with this boundary in mind. See: Cake Equity's startup tax concession guide.

The scale of the problem is frequently underestimated. Three data sources frame it clearly:

• 65% — Wasserman (Harvard Business School): Professor Noam Wasserman, author of The Founder's Dilemma, found that 65% of high-potential startups fail due to conflict among co-founders. This figure is widely cited by Australian practitioners (Entrepreneur, Sprintlaw, LegalVision). It derives from investor perception surveys and reflects high-potential startups specifically — cite with that context.
• 23% — CB Insights / wrong-team failures: CB Insights post-mortem analysis identifies "wrong team" issues (including co-founder conflicts, skills gaps, and poor hiring decisions) as contributing to 23% of startup failures — the third most common cause after lack of market need (42%) and running out of funding (29%).
• 35% — Icehouse Ventures (ANZ-specific): The most directly relevant data point for Australian and New Zealand founders comes from Icehouse Ventures, which tracked 100 companies funded since 2012 and found that 35% had a founder depart — most within the first two years of receiving investment. This is not a failure rate; it is a departure rate from an active investor's portfolio, making it a realistic benchmark for ANZ-market founders.

The most common pattern in 2025–26 is inactive equity: a co-founder stops contributing or joins another business but retains a large shareholding, with no mechanism to adjust equity or compel departure. Velocity Legal notes that without a SHA, the only recourse is litigation under the Corporations Act — which can take years and cost hundreds of thousands of dollars.

BBHF Pty Ltd v Sleeping Duck Pty Ltd [2024] VSC 320 (Supreme Court of Victoria, 14 June 2024) is the most significant recent Australian case on minority shareholder rights in a startup context. Its lessons are directly applicable to any founding team dealing with advisory equity, dilutive share plans, and management exclusion claims.

Facts: Dr Shiffman (through BBHF) claimed that in exchange for advisory services as an experienced entrepreneur, the founders of the mattress startup Sleeping Duck had agreed to give him 5% of their founder shares plus an option to acquire additional shares. He alleged he was excluded from management decisions, diluted through an employee share option plan (ESOP) without his effective consent, and blocked from realising the value of his investment.

Outcome: The court found no oppression under s.232 of the Corporations Act 2001 (Cth). Key findings (Warlows Legal):

• Advisory roles do not confer management rights — the plaintiff acted as a mentor, not a manager, and had no documented expectation of operational involvement.
• An ESOP agreed to by a minority shareholder cannot later be characterised as oppressive dilution.
• Courts will defer to legitimate business decisions: the founders' rejection of the plaintiff's proposals was commercially reasonable.
• Informal understandings about roles and rights will fail in court without written evidence.
• The proceedings ran for over two years, with 13 days of trial — for a dispute involving 5% of a mattress startup. The cost signal is unmistakable.

The core lesson: if your advisory or co-founder arrangements are not documented in a signed SHA, Founders Agreement, or Advisory Agreement with explicit role definitions, management rights, and ESOP consent clauses, the courts will not infer them from conduct or verbal understandings. See also: List A Barristers' case note.

Two significant reforms have been announced but are not yet law. Founders should monitor both carefully and avoid treating them as current obligations.

1. Proposed non-compete ban (from 2027) — ⚠️ NOT YET ENACTED

On 25 March 2025, the Albanese Government announced a proposal to ban non-compete clauses for workers earning below the Fair Work Act high-income threshold — currently $183,100 for FY2025–26. The proposal targets approximately 91% of Australian workers. A consultation paper was released in July 2025 and submissions closed 5 September 2025. As at late 2025, no Bill had been introduced to Parliament. (Ministers' Media Centre, Treasury consultation)

Critical distinction for founders: Alliott Global confirms: "There are no current proposals in Australia to change how restraint clauses operate in other commercial agreements like sale of business contracts, shareholders agreements or partnership agreements." A non-compete embedded in a Shareholders Agreement and triggered at the point a founder exits as a shareholder (not as an employee) is expected to remain enforceable under existing common law principles. Founders should place their non-compete in the SHA, not solely in an employment contract.

2. Proposed CGT reform (from 1 July 2027) — ⚠️ NOT YET ENACTED

The 2025–26 Federal Budget proposed replacing the 50% CGT discount for individuals, trusts, and partnerships with cost-base indexation and a 30% minimum tax on net capital gains from 1 July 2027. (PwC budget analysis) This has not been legislated. Because most founders hold shares with a nominal cost base (e.g. $0.001 per share), indexation would provide minimal relief on a large gain, potentially raising their effective CGT rate materially. Founders contemplating exits after 1 July 2027 should model both scenarios with a tax adviser — but should not restructure on the assumption this proposal will pass in its current form.

These hand-picked videos and podcast episodes go deeper on the topics in this guide. We've favoured Australian creators, advisers and founders, with a few standout global explainers where the concept is universal. Each link was checked to confirm it is live at the time of publishing; treat any figures, tax rates or thresholds mentioned in older clips as point-in-time and cross-check against the current rules above.

Watch

• [AU] Startup Essentials to Co Founder and Shareholders Agreements — LegalVision (2022). Australian-specific 43-min webinar covering what co-founder agreements and shareholders agreements are, governance frameworks, drag-along/tag-along clauses, share vesting, and ESOP pool provisions — primary AU legal reference for founding team structure.
• Why Investors Walk Away: The Legal Mistakes That Kill Funding Deals in Australia | LegalVision — LegalVision (2026). LegalVision Practice Leader Sian McLachlan details AU-specific investor deal-killers: messy cap tables, unclear IP ownership, missing shareholder agreements, and bad leaver provisions — shows founders exactly what legal hygiene to fix before raising.
• Golden Rules for Co-Founder Relationships That Grow Startups Into Unicorns — The Startup Podcast (2024). Chris Saad and Yaniv Bernstein (The Startup Podcast, AU-based hosts) give a 51-min breakdown of founder team dynamics: equity splits, vesting schedules, co-CEO conflicts, roles vs titles, and managing founder breakups — highly practical global advice.
• How Top 1% Founders Navigate Co-founder Conflict — Y Combinator (2025). Y Combinator partners (Harj Taggar, Garry Tan) share real lessons from co-founder conflicts at Stripe, Posterous and other startups — authoritative global explainer on conflict resolution, communication styles, and when to seek outside help.
• Identify startup red flags early in your co-founder relationship w/ Dr. Matthew Jones — The Startup Podcast (2026). Deep dive with co-founder psychologist Dr. Matthew Jones on negative sentiment override, power dynamics in founding teams, when to renegotiate co-founder agreements, and how vesting and equity splits should evolve — high practical value for AU founders.

No standalone Australian podcast episode met our quality bar for this specific topic at publishing time, so this list is video-led. We'll add audio as strong episodes appear.