The Indian Independence Act, passed by the British Parliament and given royal assent on 18 July 1947, legally ended British rule in India. It created the dominions of India and Pakistan effective 15 August 1947 and empowered their Constituent Assemblies to frame independent constitutions.

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• Act based on Mountbatten Plan or 3 June Plan
• Created two dominions — India and Pakistan — from 15 August
• Constituent Assemblies given full legislative and constitutional powers
• British suzerainty over princely states ended; states free to join either dominion
• Governor-General to act on advice of dominion governments
• Office of Secretary of State for India abolished
• Boundary Commission under Radcliffe to divide Punjab and Bengal
• British laws no longer automatically applicable in dominions
• Act enabled drafting of Indian Constitution (Aug 1947–Jan 1950)
• Repealed in India via Article 395 of the Constitution; Pakistan via 1956 Constitution