A shareholder agreement is one of the most important legal documents an Australian company can have, but many overlook it until something goes wrong.
Whether you're launching a startup, running a family business, or operating a company with multiple investors, a well-drafted shareholder agreement provides certainty, reduces risk, and protects the business's long-term future.
In This Article:
What Is A Shareholder Agreement?
A shareholder agreement is a legally binding contract between some or all of a company’s shareholders (and usually the company itself).
It governs:
how the company is owned and managed
the rights and obligations of shareholders
how decisions are made
how shares can be issued or transferred
what happens if a shareholder exits the business
Together with the company’s constitution, a shareholder agreement forms the foundation of a company’s corporate governance framework.
While a company constitution sets out broad governance rules under the Corporations Act 2001, a shareholder agreement lets shareholders privately and contractually agree on matters specific to their business and relationship.
Why Is A Shareholder Agreement So Important?
Without a shareholder agreement, companies are exposed to serious legal and commercial risks, including:
costly shareholder disputes that stall decision-making
deadlocks (especially in equal partnerships)
uncertainty when a shareholder wants to exit, or in cases of death or incapacity
unwanted third parties acquiring shares
no agreed process for valuing shares
disputes over funding, control and/or direction of the company
A robust shareholder agreement helps to prevent disputes and provides a clear roadmap for resolving them if they arise. It also signals to investors, lenders, and stakeholders that your company is well-managed and professionally structured.
Shareholders Agreement vs Constitution: What’s The Difference?
Although there is some overlap, these documents serve different purposes:
Constitution | Shareholders Agreement |
Governed partly by the Corporations Act | Governed by contract law |
Can usually be amended by 75% shareholder vote | Usually requires unanimous consent |
Publicly accessible | Private and confidential |
Broad governance rules | Tailored commercial arrangements |
Because a constitution can be amended by a 75% majority, minority shareholders may be vulnerable without a shareholder agreement. A shareholder agreement can entrench key rights, such as pre-emptive rights or veto powers.
Where both documents exist, the shareholder agreement typically prevails in the event of inconsistency.
Get Advice From RHC Solicitors
If you are starting a new company, bringing in investors, reviewing or amending an existing shareholder agreement, or facing a shareholder dispute, our experienced corporate lawyers at RHC Solicitors can provide clear, practical advice tailored to your business.
When Should A Shareholder Agreement Be Put In Place?
The best time to put a shareholder agreement in place is as early as possible, ideally when the company is formed and when all parties are aligned in their corporate goals.
Waiting until a dispute arises makes negotiations more difficult, more expensive, and far more contentious.
Remember that a shareholder agreement must be executed by each shareholder and the company itself. Execution requirements differ for individuals and companies, so take care to ensure the agreement is validly signed. Engaging a reputable, experienced contract lawyer can help ensure the document is prepared correctly and executed properly.
Common Mistakes To Avoid
When preparing a shareholder agreement, we often see mistakes that can expose a business to unnecessary risk and disputes.
Using Generic Templates
Off-the-shelf templates rarely reflect how a business actually operates or the specific intentions of the shareholders. This can create inconsistencies or include clauses that don't suit the business’s structure or growth plans.
Failing To Address Deadlock
If shareholders disagree and there is no clear deadlock mechanism, decision-making can grind to a halt. A well-drafted agreement should set out how disputes are resolved to avoid costly stalemates.
Leaving Valuation Clauses Vague
Unclear valuation methods can lead to serious disputes when shares are bought, sold or transferred. Clear valuation provisions provide certainty and reduce the risk of disagreement at critical moments.
Waiting Until Conflict Arises
As noted above, negotiating shareholder arrangements after a dispute has started is far more difficult and expensive. Agreements work best when parties are on good terms, and their goals align.
Assuming A Constitution Alone Is Sufficient
A company constitution sets basic governance rules, but it does not address many commercial and relationship issues between shareholders. A shareholder agreement fills in the gaps with tailored, practical protections in the interests of all shareholders.
Viewing A Shareholders Agreement As A Sign Of Mistrust
A shareholder agreement isn't about anticipating conflict; it's about setting clear expectations from the outset. It acts as a commercial blueprint and risk-management tool that protects the business and all shareholders over the long term.
Underestimating The Cost Of Not Having An Agreement
The cost of preparing a well-drafted shareholder agreement is small compared to the financial, operational and emotional impact of a shareholder dispute, which can be expensive, time-consuming and disruptive to the business.
Ultimately, there is no "one size fits all" shareholder agreement, as each must be carefully tailored to the business and the parties involved. This is why engaging an experienced commercial and contract lawyer is so important.
Disclaimer: This publication is not intended to be comprehensive, nor does it constitute legal advice. We are unable to ensure the information is current, and there is no guarantee in relation to accuracy. You should seek legal or other professional advice before acting or relying on any of the content of this publication. The views and/or opinions expressed in this publication are those of the author and may not necessarily represent the views and/or opinions of RHC Solicitors.
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