Secretarial audits are mandatory for listed companies, large public companies, and subsidiaries of public companies under the Companies Act, 2013. They must be conducted by a practicing company secretary to check compliance with corporate and other laws. The secretarial audit report provides an independent assessment of the company's compliance with legal requirements and is included in the board's report. Companies not required to conduct one may do so voluntarily for risk mitigation and corporate governance purposes. Practicing company secretaries can be penalized for false or misleading statements in a secretarial audit report.