This document explains the '3Is' – Inspection, Inquiry, and Investigation – as defined by the Companies Act, 2013. It details the powers of the Registrar and Inspectors, the procedures for initiating these actions, and the differences between them. The guide also covers the role of the Serious Fraud Investigation Office (SFIO) and the legal ramifications for non-compliance. It's a valuable resource for company directors, officers, legal professionals, and anyone involved in corporate governance and regulatory compliance.