What Is A Shareholders Agreement?

Bringing co-founders or investors on board is exciting - it means your business is growing. But it also means you’ll make big decisions together, manage money, and plan exits over time.

That’s where a Shareholders Agreement comes in. It sets the rules of the game between your company’s owners so you can focus on building the business (not fighting about it later).

In this guide, we’ll explain what a Shareholders Agreement is in Australia, what it should cover, how it works alongside your company documents, and when to put one in place. We’ll also flag common traps and give you a clear path to get started.

What Is A Shareholders Agreement?

A Shareholders Agreement is a private contract between the shareholders of a company (and often the company itself). It sets out how key decisions are made, who does what, how shares can be issued or transferred, what happens if someone leaves, and how disputes are resolved.

Think of it as a rulebook for the owners. It answers questions like:

• How do we appoint or remove directors?
• What decisions require unanimous consent versus a simple majority?
• If a founder leaves, do they have to sell their shares - and at what price?
• Can a shareholder sell shares to a third party, or do existing owners get first dibs?
• How do we raise capital without unfairly diluting early shareholders?
• What’s the plan if we’re deadlocked?

Unlike your Company Constitution, which governs the company at a high level under the Corporations Act, a Shareholders Agreement focuses on the relationship between owners and their rights and obligations to each other. It’s tailored to your commercial deal.

Most early-stage Australian companies put one in place the moment there is more than one owner. It’s much cheaper to agree on the rules while you still get along than to negotiate them mid-dispute.

Do Small Companies In Australia Really Need One?

Short answer: if there is more than one shareholder, yes - a Shareholders Agreement is strongly recommended.

Here’s why it matters for small and growing businesses:

• Clarity from day one: Everyone understands decision-making, responsibilities, and the process for changes.
• Investor readiness: Many investors expect to see a robust agreement; it signals you’re serious about governance.
• Protection against founder fallouts: If someone leaves, dies, or stops contributing, you’ve already agreed what happens to their shares.
• Smooth capital raises: Pre-agreed rules for new share issues, valuation, and anti-dilution reduce friction later.
• Faster decisions: A clear list of “reserved matters” means no surprises about what needs consent and what doesn’t.

Even if your company is just you and a co-founder, a Shareholders Agreement can save time, money, and relationships. If you’re still working out ownership or equity, it can sit alongside your cap table and any Share Vesting Agreement to reflect your long-term plan.

What Should A Shareholders Agreement Cover?

Every business is different, but most Australian Shareholders Agreements will address the following areas. Use these as a checklist to guide your discussions.

1) Governance And Decision-Making

• Board composition and director appointment/removal.
• Reserved matters: a list of decisions that need unanimous or special majority consent (e.g. issuing new shares, taking on debt above a threshold, changing business lines).
• Quorum and voting rules for board and shareholder meetings.

2) Share Capital, Issues And Dilution

• Authority and process to issue new shares or options.
• Pre-emptive rights on new issues (existing shareholders get first option to maintain their %).
• Anti-dilution protections (if relevant for investors).
• Clarity around different classes of shares and rights (e.g. preference vs ordinary shares).

3) Transfers, Exits And Liquidity

• Pre-emptive rights on transfers: existing owners can buy before an outsider.
• Drag-along and tag-along rights: align minority and majority interests during a sale.
• Permitted transfers (e.g. to family trusts) and process for consent.
• Exit waterfall: who gets paid, and in what order, on a sale or wind-up.

4) Leaver Provisions (Founders And Key People)

• Good leaver vs bad leaver outcomes (price and compulsory transfer requirements).
• Vesting mechanics and acceleration triggers for founder equity.
• Restraint and non-solicitation to protect the business after someone departs.

5) Funding And Dividends

• Debt vs equity funding preferences and consent thresholds.
• Shareholder loans: terms, interest, priority and repayment.
• Dividend policy: how profits will be declared and distributed (if at all).

6) Roles, Time Commitments And Remuneration

• Expectations of founder involvement (hours, responsibilities).
• Director fees, executive salaries, and approval process for changes.
• Conflicts of interest: disclosure and decision rules.

7) Intellectual Property, Confidentiality And Restraints

• Confirm all IP developed for the business is owned by the company.
• Confidentiality obligations that continue after a shareholder exits.
• Restraints on competing businesses and poaching clients/staff (reasonable in scope, duration and geography).

8) Disputes, Deadlock And Enforcement

• Deadlock resolution: chair casting vote, mediation, buy-sell, or third-party expert.
• Dispute resolution process before litigation (negotiation, mediation, arbitration).
• Default events and remedies (e.g. breach, insolvency) and compulsory transfer mechanics.

9) Valuation Methods For Share Transfers

• Pre-agreed valuation approach for buybacks or transfers (e.g. independent valuer, EBITDA multiple, or formula).
• Timelines and cost allocation for valuation exercises.

It’s also smart to align your agreement with any allocation plan you’re using - for example, if you’re still dividing founder equity, read up on how to allocate shares in a startup so the legal terms and the cap table match.

How Does It Fit With The Company Constitution And Other Documents?

Your company can be governed by replaceable rules under the Corporations Act, a custom constitution, or both. Most private companies adopt a tailored Company Constitution and use a Shareholders Agreement to deal with owner-specific rights and commercial arrangements.

In practice:

• The Constitution covers the core mechanics of the company (shares, meetings, directors’ powers) and is lodged when the company is registered.
• The Shareholders Agreement sets the commercial deal between the owners and can be updated as the business evolves.

It’s important to ensure they don’t contradict each other. If there’s a conflict, your agreement can specify which document prevails.

Other related documents often used alongside a Shareholders Agreement include:

• Deed of Accession for new shareholders joining the existing agreement.
• Share Vesting Agreement for founders or key staff where equity vests over time or on milestones.
• Option or ESOP documentation if you plan to grant employee options in future.
• NDA and IP assignment terms for consultants and contractors to ensure the company owns the IP it relies on.

If you’re still deciding on share classes, preferences, or voting rights, get clear on your long-term plan before locking in terms - see the guide to different classes of shares for common structures in Australian startups.

When Should You Put A Shareholders Agreement In Place?

Ideally, as soon as there’s more than one shareholder. Common trigger points include:

• At incorporation if there are co-founders.
• Before a pre-seed or seed capital raise.
• When allocating equity to early hires (especially with vesting).
• When a shareholder is exiting, and the parties want to set or clarify rules for future events.

Waiting until a dispute arises is risky. It’s far easier to negotiate fair terms when everyone’s aligned and working toward the same goal.

How Do You Set One Up And Sign It Properly?

There’s no “one-size-fits-all” template that suits every business - the best agreements are tailored to your structure, cap table, and growth plans. A typical setup process looks like this:

Step 1: Align On Commercial Terms

• Map out the cap table and any vesting.
• Agree on decision-making thresholds and reserved matters.
• Decide on transfer rules, pre-emptive rights, and drag/tag.
• Set a sensible process and method for valuations.

Step 2: Draft The Document (And Check For Conflicts)

• Ensure the drafting matches your commercial deal and your Constitution.
• Include a Deed of Accession clause so new shareholders can join easily.
• Build in practical timelines and processes you can follow in real life.

Step 3: Execute The Agreement

• Make sure every shareholder (and the company) signs correctly.
• For company execution, follow the rules for signing under section 127 or use authorised signatories as permitted.
• Keep signed copies with your corporate records and share internally as needed.

If you plan to onboard investors or employees with equity later, make sure your agreement and cap table can scale with you. When you’re ready, a tailored Shareholders Agreement will reflect your current deal while leaving room for growth.

Common Mistakes (And How To Avoid Them)

We regularly see early-stage companies trip up on avoidable issues. Here are the big ones to watch:

• No pre-emptive rights: Without them, founders can be diluted in ways they didn’t expect. Include clear pre-emption and anti-dilution rules if needed.
• Vague valuation rules: “Fair value” without a method = future arguments. Nominate a method or an independent valuer upfront.
• Ignoring leaver scenarios: If a founder stops contributing, the business can stall. Include good/bad leaver definitions and compulsory transfer terms.
• Document conflicts: The Shareholders Agreement and Constitution should align. Resolve inconsistencies before signing.
• No pathway for new shareholders: Make it easy to join the agreement via a Deed of Accession.
• Unclear share classes: If you plan to create preference shares, codify the rights clearly and align them with your share class structure.
• Execution errors: Agreements that aren’t correctly signed can cause enforceability issues. Follow proper company signing rules and keep records tidy.

As a best practice, revisit your agreement at major milestones - new investment, changes in leadership, or expansion - so it stays fit for purpose.

Frequently Asked Questions

Is A Shareholders Agreement Legally Required In Australia?

No, there’s no legal requirement to have one. But if there’s more than one shareholder, it’s a foundational risk management tool. Many investors will insist on it before investing.

Who Signs The Shareholders Agreement?

All shareholders should sign, and the company generally signs too. New shareholders can join by signing a Deed of Accession on the terms specified in the agreement.

Can We Use A Template?

Templates can be a starting point, but they rarely reflect your cap table, funding plans, or exit strategy. A tailored document aligned with your commercial deal is far safer long-term.

What If Our Shareholders Change Often?

Build a simple process into the agreement (e.g. Deed of Accession, pre-emptive rights, and clear transfer mechanics). This lets you onboard or offboard shareholders without rewriting the agreement.

How Does It Interact With Share Classes?

Your agreement should reflect the rights attached to each class. If you’re planning preference shares, make sure the classes and rights are clearly defined and consistent across your documents. If you’re still deciding, start with the fundamentals in different classes of shares and then lock them into your cap table and agreement.

Key Takeaways

• A Shareholders Agreement is a private contract between owners that sets decision-making rules, share transfer processes, funding terms, exits, and dispute resolution.
• For Australian small businesses with more than one owner, it’s one of the most important documents to prevent disputes and keep growth on track.
• Cover the essentials: governance, pre-emptive rights, drag/tag, leaver provisions, valuation methods, restraints, confidentiality and IP ownership.
• Make sure the agreement aligns with your Company Constitution and includes a clean pathway for new investors via a Deed of Accession.
• Get the execution right - follow company signing rules under section 127 and keep signed copies with your corporate records.
• Revisit and update the agreement at key milestones (new funding, share class changes, founder departures) so it stays aligned with your cap table and strategy.

If you’d like a consultation on drafting or reviewing a Shareholders Agreement for your company, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.