The traditional idea of the state has been drastically changed by India's changing governance landscape, which is characterized by liberalization, privatization and the growth of public-private partnerships. Through significant rulings like R.D. Shetty v. International Airport Authority of India [1], Ajay Hasia v. Khalid Mujib Sehravardi [2] and Pradeep Kumar Biswas v. Indian Institute of Chemical Biology [3], the Indian Constitution's Article 12, which defines "State" for the purposes of Part III, has been subject to expansive judicial interpretation. In order to expand the application of basic rights to entities carrying out public responsibilities, these rulings developed the "instrumentality or agency" theory.

However, this doctrinal framework's inherent limits have been shown by the current era of privatization, especially in cases like Zee Telefilms Ltd. v. Union of India [4], where corporations performing important public duties have been excluded from the definition of "State." As a result, there is a lack of accountability, which enables private actors carrying out public obligations to avoid constitutional scrutiny.

This paper argues that the existing tests—financial, functional and administrative control—are inadequate in addressing the complexities of modern governance. It advocates for a purposive and functional interpretation of Article 12, emphasizing the nature of functions performed rather than the form of the entity. Drawing upon comparative constitutional jurisprudence and scholarly writings such as H.M. Seervai, V.N. Shukla, and M.P. Jain, the paper proposes the adoption of a broader, rights-oriented approach to ensure effective enforcement of fundamental rights in an era of shifting state functions.