The Duke of Westminster Principle is ‘Not Alive in its Own Soil’: Judicial Retreat in the UK and Statutory Displacement by GAAR in India

The characterisation of the Duke of Westminster principle as being “dead in its own soil” or as having had its “ghost exorcised” has been a recurring theme in Indian judicial discourse. The principle permits taxpayers to arrange their affairs so as to minimise tax liability, provided such arrangements are legally valid, and this form-based approach to tax avoidance has exercised considerable influence on tax jurisprudence in common law jurisdictions, including India. However, subsequent judicial developments and legislative interventions have raised significant questions regarding the continuing relevance of the Westminster principle, particularly in its country of origin and in jurisdictions that have adopted comprehensive anti-avoidance regimes. This paper examines whether the Duke of Westminster principle can indeed be regarded as “not alive in its own soil” by addressing three central aspects: first, the origin and legal reasoning underlying the Westminster principle. Second, its evolution and contemporary significance in the United Kingdom and third, its continuing relevance in Indian tax law in light of the General Anti-Avoidance Rule (GAAR). In doing so, the paper explores whether the principle continues to operate as a legitimate defence for taxpayers or whether it has been substantially curtailed by substance-oriented approaches to tax avoidance. The paper argues that the enactment and implementation of GAAR under Chapter X-A of the Income Tax Act, 1961 marks a decisive statutory shift, empowering tax authorities to disregard arrangements that lack commercial substance. It concludes that while the Westminster principle has not been formally overruled, its contemporary relevance in both the United Kingdom and India is confined to bona fide tax planning, with substance, legislative intent, and economic reality increasingly prevailing over legal form.