The governing statute is the Societies Act 1966, administered by the Registry of Societies within the Ministry of Home Affairs. The Act defines what counts as a society, requires registration for any group of ten or more persons not otherwise registered under written law, and sets out the Registrar's powers to register, refuse or order changes to a society's name or rules. Two registration tracks exist. Societies not listed in the Schedule to the Act are eligible for the Automatic Registration process, while those falling within the Schedule, including most religious and certain interest-based bodies, must apply under the Normal Registration process under section 4. Under section 4A the Registrar retains the power to direct an automatically registered society to alter its rules where they would be contrary to the national interest or prejudicial to public peace, welfare or good order.
Form requirements are precise and the Registrar enforces them. The constitution must be submitted in English and in Microsoft Word format, with the three key office-bearers, namely the President, Secretary and Treasurer, verifying and lodging the application through their Singpass accounts. The Act also restricts who may hold office: the majority of committee members must be Singapore citizens, and the President, Secretary and Treasurer together with their deputies are expected to be citizens or permanent residents. Foreign diplomats may not serve on the committee. Persons disqualified under section 12 of the Act, such as undischarged bankrupts or those with certain convictions, cannot act as officers. A society that collects members' personal data also falls within the Personal Data Protection Act 2012 for consent, use and storage of that data. ROS publishes its requirements and a model document on its official portal; the Registry of Societies guidance on what a society constitution must contain is the authoritative reference and should be read before lodging.