Voluntary disclosure by the corporate sector refers to the practice of companies willingly disclosing information beyond what is legally required to build transparency and trust. The traditional financial reporting has limitations stemming from its historical focus, neglect of non-financial metrics, challenges in addressing the global nature of business, etc. These can hinder the ability to provide a comprehensive, up-to-date and a holistic representation of a company’s performance, prospects, and risks in such a dynamic business environment. Integrated Reporting consolidates the environmental, social and governance (ESG) information into a single coherent report, and is thus, an improvement over traditional financial reporting. This research paper shows how Integrated Reporting facilitates voluntary disclosure in the corporate sector along with its benefits, challenges and regulatory landscape. This paper also presents case studies of the top ten Indian companies (as per market capitalization) to evaluate their compliance with guiding principles, content elements and capital disclosures specified as per the IR framework. The disclosure index findings indicate that most leading Indian companies have begun adopting the Integrated Reporting framework and are now publishing Integrated Annual Reports. This shift has significantly enhanced their efficiency in voluntarily disclosing information.