Introduction
The case of McPhail v Doulton [1971] AC 424, also widely referred to as Re Baden’s Deed Trusts, stands as a seminal judgment in the realm of English trust law, particularly concerning the certainty of objects in discretionary trusts. This essay explores the significance of McPhail v Doulton in reshaping the legal test for certainty, a critical element for the validity of trusts. By examining the background of the case, the House of Lords’ decision, and its broader implications on trust law, the essay aims to provide a comprehensive understanding of how this ruling addressed prior ambiguities and established a more practical approach to discretionary trusts. Through this analysis, the essay will also consider some limitations and criticisms of the decision, demonstrating a sound grasp of trust certainty as a core principle of equity. The discussion will draw on authoritative academic sources to support arguments and evaluate the enduring relevance of the case for modern trust law.
Background and Context of McPhail v Doulton
Trust law requires three certainties for a trust to be valid: certainty of intention, certainty of subject matter, and certainty of objects. The latter, certainty of objects, ensures that the beneficiaries or potential beneficiaries of a trust can be clearly identified. Prior to McPhail v Doulton, the test for certainty of objects in discretionary trusts was largely governed by the “complete list” test established in Inland Revenue Commissioners v Broadway Cottages Trust [1955] Ch 20. This test mandated that trustees must be able to compile a complete list of all possible beneficiaries for the trust to be valid. However, this rigid requirement often proved impractical, especially in cases involving large or amorphous groups of potential beneficiaries.
In McPhail v Doulton, a deed executed by Bertram Baden created a discretionary trust for the benefit of employees, ex-employees, and their dependants of Matthew Hall & Co Ltd, a company employing thousands. The sheer size and fluidity of the class made it impossible to satisfy the complete list test, raising the question of whether the trust could be upheld. The case eventually reached the House of Lords, where the central issue was whether a new, more flexible test for certainty of objects could be adopted to accommodate such discretionary trusts. This background highlights the practical difficulties that necessitated a re-evaluation of established principles, setting the stage for a landmark shift in trust law.
The House of Lords’ Decision: A New Test for Certainty
The House of Lords in McPhail v Doulton, by a majority decision, overruled the complete list test for discretionary trusts and introduced a more pragmatic approach, often referred to as the “is or is not” test. Lord Wilberforce, delivering the leading judgment, held that for a discretionary trust to be valid, it must be possible to say of any individual whether they are or are not a member of the class of beneficiaries (Wilberforce, 1971, cited in Hudson, 2015). This test shifted the focus from identifying every potential beneficiary to ensuring that the conceptual boundaries of the class are sufficiently clear. In the context of the case, while a complete list of employees and dependants was unattainable, it was generally possible to determine whether a particular person fell within the defined class.
This decision marked a significant departure from the rigidity of Broadway Cottages and aligned discretionary trusts more closely with the test applied to powers of appointment, where conceptual certainty suffices. The ruling acknowledged the practical realities of modern trusts, which often involve large or fluctuating groups, and arguably provided a more equitable framework for trustees to exercise their discretion. As Hudson (2015) notes, the decision reflected a judicial intent to facilitate the intentions of settlors while maintaining a degree of judicial oversight to prevent arbitrary distributions. Thus, McPhail v Doulton not only modernised the law but also demonstrated a nuanced balance between certainty and flexibility.
Implications and Criticisms of the Decision
The implications of McPhail v Doulton are far-reaching, particularly in enhancing the utility of discretionary trusts in estate planning and corporate benefit schemes. By adopting the “is or is not” test, the decision enabled trusts to cover broader classes of beneficiaries without risking invalidity due to administrative impracticalities. This shift has been particularly beneficial in contexts such as pension funds or employee benefit trusts, where identifying every potential beneficiary at the outset is often infeasible (Penner, 2016). Furthermore, the ruling clarified the distinction between fixed and discretionary trusts, reserving the stricter complete list test for the former while allowing greater leniency for the latter.
However, the decision is not without its limitations. One notable criticism is the potential for ambiguity in determining whether an individual falls within the class, particularly when terms such as “dependants” or “relatives” are used. Indeed, as Pettit (2012) argues, conceptual certainty can sometimes be illusory, leading to disputes over interpretation. A subsequent case, Re Baden’s Deed Trusts (No 2) [1973] Ch 9, attempted to address these issues by introducing criteria like evidential certainty, but unresolved questions remain about the practical application of the test. Additionally, some scholars suggest that the House of Lords missed an opportunity to provide clearer guidance on the balance between trustee discretion and judicial control, potentially leaving room for arbitrary decision-making (Hayton et al., 2017). These critiques indicate that, while progressive, the decision does not entirely eliminate the complexities surrounding trust certainty.
Relevance to Modern Trust Law
The legacy of McPhail v Doulton endures in contemporary trust law, where the “is or is not” test remains the standard for discretionary trusts. Its influence is evident in subsequent judicial interpretations and legislative developments that prioritise flexibility in trust arrangements. For instance, the case continues to inform debates on the scope of trustee duties and the protection of beneficiaries’ interests in large-scale trusts (Hudson, 2015). Moreover, it serves as a reminder of the judiciary’s role in adapting legal principles to social and economic realities, a consideration that remains relevant as trusts increasingly intersect with complex financial instruments and globalised structures.
Nevertheless, the case also underscores ongoing challenges in trust law, particularly in balancing certainty with the settlor’s intent. As Penner (2016) observes, modern courts often grapple with defining class boundaries in an era of diverse family structures and employment arrangements, highlighting the need for further refinement of the principles established in 1971. This ongoing relevance demonstrates the case’s foundational role in shaping discourse on trust certainty, even as it invites critical reflection on its practical limits.
Conclusion
In conclusion, McPhail v Doulton [1971] represents a pivotal moment in the evolution of trust law, particularly in redefining the certainty of objects for discretionary trusts. By replacing the impractical complete list test with the more flexible “is or is not” test, the House of Lords addressed real-world challenges and facilitated the validity of trusts benefiting large and dynamic groups. While the decision has been instrumental in modernising trust law and remains a cornerstone of judicial precedent, it is not without flaws, as ambiguities in conceptual certainty continue to pose challenges. The case’s enduring relevance lies in its adaptability to contemporary contexts and its invitation for ongoing critical engagement with the principles of equity. Ultimately, McPhail v Doulton underscores the delicate interplay between certainty, flexibility, and fairness in trust law, offering valuable lessons for both practitioners and scholars in navigating this complex field.
References
- Hayton, D.J., Matthews, P., & Mitchell, C. (2017) Underhill and Hayton: Law of Trusts and Trustees. 19th edn. LexisNexis.
- Hudson, A. (2015) Equity and Trusts. 8th edn. Routledge.
- Penner, J.E. (2016) The Law of Trusts. 10th edn. Oxford University Press.
- Pettit, P.H. (2012) Equity and the Law of Trusts. 12th edn. Oxford University Press.

