A Company Constitution is the foundational governance document of an Australian company. It is adopted under s 136 of the Corporations Act 2001 (Cth) and sets out the rules by which the company is managed — governing the rights and obligations of shareholders, directors, and officers, and the procedures for making decisions, issuing shares, paying dividends, and winding up the company.

Before 1 July 1998, when the current Corporations Act regime came into force, companies were required to have both a Memorandum of Association (setting out the objects of the company) and Articles of Association (setting out the internal governance rules). Under the modern Corporations Act, these documents were replaced by a single document — the Constitution — and the concept of limited objects was abolished. Companies incorporated after 1 July 1998 have unlimited legal capacity by default.

Under s 140 of the Corporations Act, a company's Constitution operates as a contract between: the company and each member; the company and each director and company secretary; and each member and every other member. This means the Constitution is legally binding on all of these parties as if they had each signed it.

If a company does not have its own Constitution, or if its Constitution does not address a particular matter, the replaceable rules in ss 135-141 of the Corporations Act apply. The replaceable rules provide a basic governance framework, but they are not designed with the specific needs of any particular company in mind. A bespoke Constitution allows a company's founders and shareholders to tailor the governance arrangements to their specific circumstances — for example, by imposing share transfer restrictions on a proprietary company, creating multiple classes of shares with different voting and economic rights, or establishing a customised board appointment mechanism.

For proprietary companies (Pty Ltd), a Constitution is particularly important because s 113(3) of the Corporations Act requires a proprietary company to have restrictions on the transfer of its shares, either in its Constitution or in a Shareholders Agreement binding all shareholders.

Every company should seriously consider adopting a bespoke Constitution at the time of incorporation, rather than relying on the replaceable rules. A Constitution is essential or strongly recommended in the following circumstances.

Propriety companies: Under s 113(3) of the Corporations Act, a proprietary company must have restrictions on the transfer of shares, which can be contained in its Constitution. Without a Constitution addressing share transfers, the company may not qualify as a proprietary company. In practice, virtually all proprietary companies — from two-person startups to mid-sized family businesses — adopt a Constitution.

Multiple share classes: Where a company has or intends to issue different classes of shares (such as ordinary shares, preference shares, or employee shares), a Constitution is needed to set out the rights attaching to each class. The replaceable rules do not adequately address multi-class share structures.

Investment and fundraising: Sophisticated investors — including venture capital funds and private equity investors — will invariably require a company to have a properly drafted Constitution as a condition of their investment. The Constitution will often be negotiated alongside a Shareholders Agreement.

Public companies: Public companies (Ltd) listed on the Australian Securities Exchange (ASX) must have a Constitution that complies with the ASX Listing Rules as well as the Corporations Act. ASX-listed companies are required to include certain provisions in their Constitutions, such as the power to issue chess depositary interests and compliance with the ASX Settlement Operating Rules.

Amending an existing Constitution: Companies with outdated Constitutions — particularly those based on the pre-1998 Memorandum and Articles framework — should update their governance documents to reflect the modern Corporations Act regime, including the electronic execution provisions introduced by the Treasury Laws Amendment (2021 Measures No. 1) Act 2021.

A well-drafted Australian Company Constitution should address the following key elements.

Replaceable rules: The Constitution should clearly state whether it replaces the replaceable rules in their entirety, modifies certain replaceable rules, or operates alongside the replaceable rules. Most companies choose to replace the replaceable rules to ensure that their governance is fully set out in a single, coherent document.

Share capital and transfer restrictions: For proprietary companies, the Constitution must contain restrictions on share transfers to comply with s 113 of the Corporations Act. The Constitution should also set out the classes of shares, the rights attaching to each class, and the procedure for issuing new shares — including whether shareholder approval is needed for new share issues.

Directors' powers and duties: The Constitution should clearly set out the board's general management authority over the company's affairs, as well as the rules for appointing and removing directors, the minimum number of directors, the quorum for board meetings, the procedure for resolving conflicts of interest, and the ability to delegate management functions.

Shareholder meetings: The Constitution should address AGM requirements (mandatory for public companies, optional for proprietary companies), the rules for calling extraordinary general meetings (including shareholders' rights to requisition meetings under s 249D), the notice periods required, the quorum for meetings, and the voting rights of shareholders including proxies.

Dividends: The Constitution must reflect the requirements of s 254T of the Corporations Act — dividends can only be paid if the company's assets exceed its liabilities, the payment is fair and reasonable, and it does not materially prejudice creditors.

Officer indemnity and D&O insurance: The Constitution should contain an indemnity for directors and officers in accordance with s 199A, and authorise the company to purchase directors' and officers' liability insurance under s 199B.

Section 127 execution: The Constitution should confirm the company's power to execute documents in accordance with s 127 of the Corporations Act, including the electronic execution provisions under s 127(3A) introduced in 2021.