Instrument of Accession

The Instrument of Accession was the formal legal instrument through which the rulers of the roughly 565 princely states transferred specified powers to the Dominion of India or the Dominion of Pakistan upon the partition of British India in August 1947. Its statutory basis lay in the Indian Independence Act, 1947 and Section 6 of the Government of India Act, 1935 (as adapted), which provided that with the lapse of British paramountcy the states became technically sovereign and free to accede to either Dominion or remain independent. The standardised instrument was drafted under the supervision of the States Department, headed by Sardar Vallabhbhai Patel with V. P. Menon as Secretary, and was deliberately limited in scope to allay the fears of rulers reluctant to surrender authority.

Under the instrument, an acceding ruler ceded jurisdiction to the Dominion over only three subjects — defence, external affairs, and communications — while retaining internal autonomy. A residuary clause expressly preserved the ruler's sovereignty in all unceded matters and stipulated that the instrument could not be varied without the ruler's consent, nor did it commit the state to the future Constitution of India. This minimalist formula, combined with Patel's persuasion and the offer of privy purses, secured the accession of the overwhelming majority of states by 15 August 1947. The instrument was a transitional device; integration proper followed through Merger Agreements and the eventual extension of the Indian Constitution, with the states reorganised under the States Reorganisation Act, 1956.

The most consequential instances arose with the three holdouts. Hyderabad, whose Nizam sought independence, was integrated through military action (Operation Polo, September 1948). Junagadh, whose Muslim ruler acceded to Pakistan against a Hindu-majority populace, was secured through a plebiscite in February 1948. Most significant for the exam is Jammu and Kashmir: Maharaja Hari Singh signed the Instrument of Accession on 26 October 1947 following the Pakistan-backed tribal invasion, the basis on which Indian troops were airlifted to Srinagar and on which Article 370 conferred special status until its abrogation in August 2019. The validity and finality of this accession remains central to India's legal position on Kashmir, affirmed by the Supreme Court in In Re: Article 370 (2023), which held the accession to be absolute and Article 370 a temporary provision.

For the UPSC examination the Instrument of Accession is a high-frequency topic across GS Paper I (Post-Independence Consolidation) and GS Paper II (Indian Polity), as well as Prelims. Typical question angles include the role of Patel and Menon in integration, the three subjects ceded under the instrument, the distinction between accession and merger, and the unique constitutional consequences of the Kashmir accession leading to Article 370. Candidates should connect the instrument to the broader theme of nation-building and the abolition of princely privileges, including the 26th Constitutional Amendment, 1971, which derecognised the rulers and abolished privy purses, completing the constitutional unification that the Instruments of Accession had begun.