The Prime Minister's Office (PMO) in India is not established by a specific Act of Parliament or a general Presidential Order. Its existence and functions are primarily defined and regulated through executive orders and administrative rules.
The correct basis for the creation and structuring of the Prime Minister's Office is the Allocation of Business Rules (Govt. of India) 1961. These rules, framed under Article 77(3) of the Constitution of India, facilitate the transaction of business of the Government of India. They specify which ministry or office is responsible for specific governmental functions, and the PMO functions within this framework.
Therefore, the Allocation of Business Rules (Govt. of India) 1961 serve as the formal basis for the Prime Minister's Office.
| List I-Articles of the Constitution of India | List II - Provisions |
| A. Article 77 | I. Extent of the Executive Power of the Union |
| B. Article 78 | II. Powers of President to grant Pardons |
| C. Article 72 | III. Conduct of business of the Government of India |
| D. Article 73 | IV. Duties of the Prime Minister of India |