A Singapore private limited company is incorporated under the Companies Act 1967 and registered with the Accounting and Corporate Regulatory Authority (ACRA) through the BizFile+ portal. The constitution is the foundational governance document required at incorporation, and its content and amendment are governed by Part 3 of the Act. Under section 22, the constitution must state the company name, that the liability of members is limited, and the share capital structure, and it takes legal effect under section 39 as a statutory contract between the company and its members.
The decision architecture of any constitution rests on two statutory majorities. An ordinary resolution passes on a simple majority of votes cast, while a special resolution requires at least 75% and is reserved for substantial matters: amending the constitution itself, changing the company name, reducing share capital, and voluntary winding up. You cannot draft below these floors, but you can build above them. Section 26A permits entrenching provisions, which fix a higher threshold than 75% for amending a specified clause, or attach a condition such as the consent of a named shareholder. This is the lawful tool for protecting a minority investor's veto without parking it offshore in a side letter.
Written resolutions are central to private-company practice. Sections 184A to 184F allow a Pte Ltd to pass resolutions by written means, in physical or electronic form, at the same 75% and simple-majority thresholds, with section 184D giving holders of 5% of voting rights the right to demand a physical meeting instead. For founders weighing how decisions will actually be taken day to day, our Singapore board resolution and director consent templates follow the same statutory logic. The authoritative reference is the Singapore Statutes Online text of the Companies Act 1967, which should be checked against the live legislation timeline before any amendment is lodged.