Singapore societies are governed by the Societies Act 1966 and the subsidiary Societies Regulations, both administered by the Registrar of Societies, a unit under the Ministry of Home Affairs. The Act does not script your AGM line by line; it leaves the timing, quorum and conduct of the meeting to your society's own constitution, then imposes hard filing duties on top. This is why a registered society must hold the AGM its constitution requires and keep the rules of that constitution faithfully.
The reporting backbone sits in Regulation 7 of the Societies Regulations. The president, secretary and treasurer must furnish the annual return to the Registrar within one month after the AGM, or, if no AGM is held, once every calendar year within one month after the close of the financial year. The return must be signed by all three office-bearers and accompanied by the income-and-expenditure account and balance sheet for the last financial year, duly certified. Regulation 4 sets the audit rule that decides who certifies: where gross income or expenditure does not exceed S$500,000, the society's own appointed auditor suffices; once that figure is exceeded, a qualified company auditor under the Companies Act must audit the accounts, and Regulation 5 dictates what that auditor's report has to state. These are not soft guidelines. Regulation 7(2), as amended by S 359/2024 with effect from 2 May 2024, makes each defaulting office-bearer individually liable on conviction to a fine, so the signatures on your return are signatures of accountability.
You can read the binding text on the Attorney-General's Chambers portal, the Singapore Statutes Online text of the Societies Regulations on annual returns and audit thresholds. For societies that also hold charity status, separate governing-instrument and Code of Governance duties apply through the Commissioner of Charities, and corporate non-profits should review our Singapore non-profit and association governance documents for the company-limited-by-guarantee route.