What Documents Must Singapore Companies Prepare for Audits? Key Compliance Requirements Clarified

Companies registered in Singapore must undergo annual audits if they meet statutory requirements. This is not optional-it is a mandatory compliance obligation. Many business owners mistakenly believe that small companies or those with zero business activity are exempt; however, the determining criterion is not revenue size but whether the company falls under the definition of a “company requiring audit” as stipulated in the Companies Act. Failure to conduct an audit when required may result in the Accounting and Corporate Regulatory Authority (ACRA) flagging the company as non-compliant-mild consequences include adverse entries on directors’ personal credit records, while more serious cases may incur financial penalties.

Which Companies Are Required to Undergo Audit

Not all Singapore-registered companies are subject to audit. An audit obligation is triggered if any one of the following three conditions applies:

1. Total assets exceed SGD 10 million;

2. Annual revenue exceeds SGD 10 million;

3. Number of employees exceeds 50.

These three criteria are assessed based on figures as of the end of the financial year, and satisfaction of any single condition triggers the audit requirement. If a company fails to meet any of these thresholds for two consecutive financial years, it may apply for exemption-but must proactively declare this in ACRA’s system and retain supporting documentation.

Core Documents Required Prior to Audit

Before auditors commence fieldwork, companies must systematically compile the following documents-none may be omitted:

1. Certificate of Incorporation and the latest version of the company’s Constitution;

2. Complete bank statements for the past three years (covering all currency accounts), bearing either the bank’s electronic seal or original physical stamp;

3. Original accounting vouchers-or clear, legible scanned copies-including invoices, receipts, payment vouchers, payroll slips, and expense reimbursement forms, covering the entire audit period;

4. Electronic versions (preferably in XLS/XLSX format) and signed, printed copies of the general ledger, subsidiary ledgers, cash flow statement, balance sheet, and profit-and-loss statement;

5. Fixed asset register and depreciation schedule, accompanied by purchase contracts, acceptance documents, and photographs of assets (where applicable);

6. Detailed schedule of related-party transactions, specifying transaction nature, amounts, pricing rationale, and supporting contractual documentation;

7. Tax-related documents: prior-year corporate income tax return (Form C-S or C), Goods and Services Tax (GST) returns (GST Form F5), and the Notice of Assessment (NOA) issued by the Inland Revenue Authority of Singapore (IRAS).

Commonly Overlooked Compliance Pitfalls

Having complete documentation is only the baseline-procedural oversights during execution also pose significant risks:

1. Unreconciled differences between bank statements and book balances, without written explanations supported by documentary evidence;

2. Changes in accounting policies-not disclosed in the notes to the financial statements-such as adjustments to depreciation methods or changes in revenue recognition timing;

3. Outstanding shareholder loans remaining unsecured by formal written agreements, with no clearly stated interest rates or repayment terms;

4. Use of personal bank accounts for company receipts or payments-without documented justification of fund purpose and corroborating bank statements;

5. Failure to file the audited report with ACRA via the BizFile+ portal within 30 days of issuance, resulting in late-filing penalties.

Important Note: Exemption Does Not Equal Release from Responsibility

Even if a company qualifies for the small-company audit exemption, it remains obligated to prepare full financial statements compliant with Singapore Financial Reporting Standards (FRS) and to have them signed by directors, who must affirm that the statements present a true and fair view. Although such statements do not require external audit, they must be retained for at least five years and remain subject to ACRA’s random inspection at any time.

The above outlines key documentation requirements and compliance considerations for annual audits of Singapore-registered companies. Should you have questions or wish to explore practical implementation details further, we recommend consulting a locally licensed auditor registered with ACRA for personalized assessment.