Can a Shareholders Agreement Override Companies Act in South Africa?

Under South African law, the Companies Act 71 of 2008 is supreme, the company’s Memorandum of Incorporation (MOI) prevails over a shareholders’ agreement, and the shareholders’ agreement binds only its signatories — it does not override the Act or the MOI. Section 15(7) of the Act expressly recognises shareholders’ agreements but voids any provision in them that is inconsistent with the Act or the MOI, and a South African court will refuse to enforce a shareholders’ agreement that materially conflicts with a lawfully issued MOI, even where the agreement contains a unanimous-consent non-variation clause. The practical effect is that a shareholders’ agreement works as a supplement to the MOI on matters the Act permits the parties to arrange (voting, restraints, exit, deadlock, dispute resolution) and fails on anything that purports to override a mandatory provision of the Act or the company’s public constitution.

The Three Documents, in Plain Language

Three documents govern the relationship between shareholders and their company in South Africa. Understanding what each one does — and what it does not do — is the foundation of any comparison between them.

• Shareholders’ agreement (SHA): a private contract between the shareholders of a company — usually also signed by the company itself — that sets out how the shareholders will run the company, how decisions will be taken, and what happens if a shareholder wants out.
• Memorandum of Incorporation (MOI): the company’s public constitution, filed with the Companies and Intellectual Property Commission (CIPC). It binds the company, its directors, and every shareholder by virtue of holding shares — whether or not each shareholder has read it.
• Companies Act 71 of 2008: the statute that governs every company registered in South Africa. It supplies a layer of default rules the company can opt out of (the alterable provisions) and a layer of rules it cannot (the mandatory or unalterable provisions).

All three operate together. The question “which one wins” is really a question of where a particular rule sits in the hierarchy when the three pull in different directions. The rest of this article walks through that hierarchy, then shows where a shareholders’ agreement genuinely binds the parties, where it cannot override the Act or the MOI, and how to draft one that will actually hold up.

The Statutory Hierarchy: Act → MOI → SHA

The hierarchy is fixed by the Companies Act 71 of 2008 itself — the Act is supreme, the MOI prevails over a shareholders’ agreement, and the SHA sits at the bottom of the order.

Section 15(7) of the Companies Act is the controlling provision. It expressly recognises shareholders’ agreements, but any term of an SHA that is inconsistent with the Act or the MOI is void. A court will give effect to the SHA on matters the Act and the MOI leave to the parties, and will strike down (or refuse to enforce) SHA clauses that try to contract out of a mandatory Act provision or contradict an MOI term — even where the SHA contains a unanimous-consent non-variation clause, a later, lawfully issued MOI will still override the inconsistent SHA clauses.

What Each Document Typically Covers (and Where They Overlap)

Topic	Where it sits	Can the SHA cover it?
Share classes, rights attaching to shares, board structure	MOI — share classes and rights must be set out in the MOI under s37; the SHA may cross-reference, not redefine	No — must be in the MOI
Voting thresholds, quorum, meeting procedure	MOI (which may vary the s65 defaults) and SHA (typically a parallel, more detailed voting regime between shareholders)	Yes, between signatories
Reserved matters, board appointment and removal, dividend policy, deadlocks, drag/tag-along, pre-emption on transfers, restraint of trade, dispute resolution	SHA — these are the matters the parties are free to arrange by private contract	Yes
Fundamental transactions, appraisal rights	Companies Act — s164 grants statutory appraisal rights the parties cannot take away	No — Act prevails
Oppression remedy	Companies Act (s163) — available to any shareholder who can show unfairly prejudicial conduct, whether or not the SHA has its own dispute-resolution clause	No — Act prevails
Directors’ duties and liability	Companies Act (s76 directors’ duties, s218 direct liability for statutory breaches) and the common law	No — Act prevails

Where the SHA Genuinely Wins (and Where It Doesn’t)

The Act and the MOI give a shareholders’ agreement genuine binding force in three broad situations:

• Between the signatories, an SHA is binding as a private contract. The Act’s default rules on pre-emption rights, transfer restrictions, deadlock resolution, and exit are alterable, so an SHA can replace them with a regime tailored to the shareholders — including extending pre-emption rights to transfers of existing issued shares (the Act’s default pre-emption applies only to fresh issues).
• Partially: an SHA can require a higher approval threshold than the Act or MOI for reserved matters, giving a minority an effective veto on those matters — but the Act’s mandatory provisions still cannot be contracted out of, and s65(10) requires at least a 10-percentage-point gap between the ordinary-resolution and special-resolution thresholds where the MOI varies them.

The SHA loses — and the clause is void — in three equally clear situations:

• Any SHA term that purports to override a mandatory Companies Act provision — for example, an SHA clause that removes a shareholder’s s164 appraisal right, or that contracts out of a director’s s76 duty — is void.
• Any SHA term that contradicts a validly adopted MOI term is unenforceable between the parties on that point.
• The “dead-MOI trap”: when an MOI is deficient, amend the MOI via CIPC; do not try to “fix” the gap in the SHA, because the SHA clause will simply be void under s15(7).

What Happens When an SHA and the MOI Conflict in Practice

A court will apply the Companies Act → MOI → SHA order, regardless of what the SHA itself says about its own priority. A non-variation clause in the SHA does not lock the MOI out of being amended by special resolution.

Where the conflict is on a non-mandatory matter, the MOI prevails as between the company and all shareholders, and the SHA may still create rights and obligations between the signatories to the extent it does not contradict the MOI. Where the conflict is on a mandatory Act provision, the Act prevails, the SHA clause is void, and the affected shareholder retains the Act’s protection (for example, the s163 oppression remedy and the s164 appraisal right remain available).

Where a dispute has already crystallised, shareholders generally approach the Companies Tribunal for an oppression-type application under s163, or the High Court (the Gauteng Division, with its Johannesburg and Pretoria seats, for the bulk of South African commercial work) for declaratory relief on the priority of the documents. Either route turns on the precise wording of the MOI, the SHA, and the statutory provision in question.

Drafting an SHA That Will Actually Hold Up

Drafting discipline matters more than clause volume. The practical points that follow are the ones that consistently decide whether an SHA holds up when the parties actually fall out:

1. Treat the SHA as a companion to the MOI, not a replacement for it — and review both documents together before signing, specifically on share transfers, dispute resolution, and authority thresholds for transactions.
2. Use the SHA for the matters the parties are free to arrange: reserved matters, board appointment and removal, dividend policy, pre-emption/tag-along/drag-along on share transfers, deadlocks, exit (death, insolvency, breach) including a valuation methodology, restraint of trade (kept reasonable in duration, geography, and scope), IP ownership and assignment, and a tiered dispute resolution clause (negotiation → mediation → AFSA arbitration).
3. Cross-reference MOI provisions rather than restating them in the SHA — restating creates the risk that an MOI amendment and an SHA amendment drift apart.
4. Where the parties need a different outcome on a matter the Act treats as alterable, amend the MOI by special resolution and file the change with CIPC, and only then update the SHA to match.
5. For BBBEE-owned or family-trust-owned companies, additional SHA discipline applies: vesting schedules, lock-in periods, funded-equity terms, and dividend waterfalls must be precisely documented; an SHA cannot give non-BEE shareholders an effective veto over BEE-shareholder decisions under the BBBEE Codes of Good Practice; and low- or no-interest loans from natural persons to family-trust-owned companies trigger a deemed donation at the official rate (SARS repo rate + 1%) under s7C of the Income Tax Act 58 of 1962, with a R100,000 annual donations-tax exemption.
6. For financial assistance by a company to acquire its own or its holding company’s shares, ss44 and 45 of the Companies Act require a special resolution and a board solvency-and-liquidity confirmation — an SHA clause that purports to authorise such financial assistance without those formalities is ineffective.

Common Pitfalls (and What Each One Costs You)

Pitfall	Cost when it bites
No SHA at all	The parties fall back on the Companies Act defaults and the MOI, which usually do not address deadlock, restraint, exit, or valuation, and the company is exposed to a s163 oppression claim by a locked-out minority
SHA and MOI inconsistent	The inconsistent SHA clauses are unenforceable on that point; worse, the inconsistency is often only discovered when a shareholder wants to act on the clause
No deadlock clause in a 50/50 company	The company can be paralysed indefinitely, and the only exit is the Act’s remedies
No restraint of trade	A departing shareholder can immediately compete, take customers and staff, and use confidential information without remedy
Unsigned or undated annexures	The SHA looks complete but the operative schedules (valuation methodology, reserved matters list) cannot be relied on
An SHA that tries to do the work of the MOI	The clause is void, and the parties think they have protection they do not

Burger Huyser’s commercial and contracts practice treats this kind of inconsistency review as a standard part of any SHA review or draft — checking both documents against the Act on the same page is the simplest safeguard against the last row of the table above.

Frequently Asked Questions

Can a shareholders’ agreement override the Companies Act in South Africa?

No. Section 15(7) of the Companies Act 71 of 2008 expressly recognises shareholders’ agreements but voids any provision that is inconsistent with the Act or the company’s MOI. Mandatory provisions of the Act — including the s163 oppression remedy and the s164 appraisal rights on fundamental transactions — cannot be contracted out of, regardless of what the SHA says.

Can a shareholders’ agreement override the company’s MOI?

No, not against the company. The MOI binds the company and every shareholder by virtue of holding shares; the SHA binds only its signatories. Where the two conflict, the MOI prevails as between the company and its shareholders, and the inconsistent SHA clause is unenforceable on that point even if the SHA contains a unanimous-consent non-variation clause.

So what is the point of having a shareholders’ agreement?

An SHA is the right place to deal with the matters the Act leaves to the parties and the MOI does not usually cover: reserved matters and minority vetoes, board appointment and removal, dividend policy, pre-emption rights on transfers of existing shares (the Act’s default pre-emption applies only to fresh issues), tag-along and drag-along, deadlock resolution, exit mechanics (death, insolvency, breach) including a valuation methodology, restraint of trade, IP and confidentiality, and a tiered dispute resolution clause. It is a private contract, kept off the public record at CIPC, and runs alongside the MOI.

What happens if the MOI is amended after the SHA is signed?

The amendment binds the company and all shareholders, including the SHA signatories. The amended MOI prevails over any inconsistent SHA clause, even where the SHA contains a unanimous-consent non-variation clause. The SHA should be updated to reflect the new MOI; until it is, the inconsistent SHA provisions are unenforceable.

Can a shareholders’ agreement take away a minority shareholder’s oppression remedy under section 163?

No. The s163 remedy is a mandatory provision of the Companies Act. An SHA can supplement the dispute-resolution path (for example, requiring mediation or arbitration first) but cannot extinguish the statutory right to apply to court for relief.

Do we have to register the shareholders’ agreement with CIPC?

No. An SHA is a private contract and is not filed with CIPC; the MOI is the public document. The privacy of the SHA is one of its main practical advantages, but it also means there is no public record of what the SHA contains, which is why the parties usually require the company and incoming shareholders to sign on as a condition of share transfer.

Does a shareholders’ agreement need to be in writing and signed?

For practical enforceability, yes — a written, signed SHA is standard, and the Electronic Communications and Transactions Act 25 of 2002 supports e-signatures. A purely oral arrangement is far harder to enforce and is not advisable for any of the core clauses listed above.

How often should a shareholders’ agreement be reviewed?

At minimum, every time the MOI is amended, and otherwise at least annually, or whenever a reserved-matter trigger or change in shareholding is contemplated. Inconsistency between the SHA and the MOI is one of the most common causes of shareholder disputes in South Africa, and the simplest safeguard is to keep both documents under one review cycle.

If you need a shareholders’ agreement drafted, an existing one reviewed against the MOI and the Companies Act, or both documents reconciled after a structural change, the commercial and contracts team at Burger Huyser Attorneys can assist. Initial enquiries go to the Linden/Randburg head office on 011 888 0246 (after-hours 061 516 6878), with Centurion-based matters handled at 012 644 4990 and Sandton-based matters at 011 253 3080. The firm is a multi-specialist practice with a 4.8/5 average across 250+ Google reviews (Trustindex verified “Top Rated Law Firm in South Africa”), and its commercial work is led through the firm’s general practice with input from the litigation team where a dispute has already crystallised.