Section 204 of the Companies Act 2013 mandates secretarial audits for listed companies, public companies with a paid up capital of over Rs. 50 crore or turnover over Rs. 250 crore. A secretarial audit verifies compliance with company law and other applicable laws, conducted by an independent company secretary. Non-compliance can result in fines from Rs. 1-5 lakh. Secretarial audits ensure management compliance and prevent penal liability. Fraud reporting and penalties for false statements are also outlined. Benefits include due diligence, risk avoidance, and regulatory assurance of compliance.