Constitution amendments and special resolutions — Timeline and processing benchmarks

Raffles Corporate Services works with a panel of corporate and employment law firms; this article is general information, not legal advice.

This guide to constitution amendments and special resolutions sets out the practical detail Singapore businesses need. Amending a Singapore company’s constitution requires a special resolution passed by at least 75 per cent of members entitled to vote, and the change must be lodged with ACRA within 14 days. Certain entrenched provisions may require a higher threshold or unanimous agreement.

Understanding Constitution amendments and special resolutions

The sections below break down constitution amendments and special resolutions step by step, covering what it is, who it applies to, the numbers that matter, the process, and the mistakes practitioners see most often.

What a constitution amendment involves

A company’s constitution sets out its internal rules. Under the Companies Act 1967, a company may alter its constitution by special resolution, and the alteration is as valid as if originally contained in the constitution. Section 26 of the Companies Act 1967 deals with the effect and alteration of the constitution, and Section 184 sets the special-resolution threshold at not less than 75 per cent of votes cast by members entitled to vote.

For a related perspective, see Singapore Corporate Tax 2026: A Complete Guide to Rates, Exemptions and Filing.

When a special resolution is needed

Special resolutions are required for constitutional changes such as altering the company name, changing share-class rights, adopting or removing provisions, and other matters the Act reserves to a 75 per cent majority. Ordinary business is decided by ordinary resolution, but any change to the constitution itself engages the special-resolution procedure.

See also our guide on Constitution amendments and special resolutions — Costs and fees breakdown.

Notice, meetings and written resolutions

A special resolution requires proper notice specifying the intention to propose it as a special resolution. Private companies may pass resolutions in writing, subject to the constitution, provided the requisite majority agrees. The company must keep minutes and update its records to reflect the amendment.

Related reading: EntrePass Singapore 2026: A Founder’s Complete Walkthrough.

Timelines and filings

See the numerical block below. The company must lodge the special resolution and the amended constitution with ACRA within 14 days of passing.

Common mistakes and gotchas

Common errors include giving insufficient or defective notice, miscalculating the 75 per cent threshold on votes cast rather than total membership, overlooking entrenched provisions that require a higher threshold, and failing to lodge within 14 days. Class-rights variations may need separate class approvals.

Types of change that need a special resolution

Beyond the general power to alter the constitution, specific changes each require a special resolution: changing the company name, converting between company types, varying class rights, reducing capital under the relevant procedure, and adopting or removing particular provisions. Some corporate actions also combine a special resolution with additional statutory steps, such as solvency statements or court approval, so the resolution is only one part of the process.

Running the meeting or written resolution correctly

For a meeting, the notice must state the intention to propose the resolution as a special resolution and set out its terms; the required majority is at least 75 per cent of votes cast. For a private company, a written resolution can achieve the same result if the requisite majority signs, subject to the constitution. In both cases the company must record the outcome in its minute book and update its registers and constitution to reflect the change.

After the vote: lodgement and effect

Once passed, the special resolution and, where the constitution has changed, the updated constitution must be lodged with ACRA within 14 days. The alteration takes effect as though it had always formed part of the constitution, binding the company and its members. Failing to lodge on time attracts penalties and can leave the public record inconsistent with the company’s actual governing document.

How Raffles Corporate Services can help

We draft the special resolution and revised constitution, advise on notice and majority requirements, and make the ACRA lodgement within the statutory window so the amendment is valid and properly recorded.

Thresholds and timelines at a glance

  • Special resolution threshold: at least 75% of votes cast.
  • Ordinary resolution threshold: more than 50%.
  • Notice: resolution must be identified as a special resolution.
  • ACRA filing deadline: within 14 days of passing.
  • Entrenched provisions: may require a higher threshold or unanimity.

Official sources

FAQs

Can we amend the constitution by written resolution?
A private company can generally pass a special resolution in writing if the requisite 75% majority agrees and the constitution permits.

What majority is a special resolution?
Not less than 75% of the votes cast by members entitled to vote.

Do we need to file the amended constitution?
Yes. The special resolution and the amended constitution are lodged with ACRA within 14 days.

What are entrenched provisions?
Provisions the constitution protects with a higher approval threshold, which can require more than 75% or unanimous consent to change.

Related guides

Need help with this? Call, SMS or WhatsApp +65 8501 7133, or email [email protected]. Raffles Corporate Services works with a panel of corporate and employment law firms; this article is general information, not legal advice.