The process of creating a will is a fundamental aspect of planning for the future, ensuring that one's wishes are honoured and assets are distributed according to their desires after passing. Central to this process is the concept of testamentary capacity, a legal criterion that must be met for a will to be considered valid. This blog delves into the complexities of testamentary capacity assessments, highlighting their importance and the legal frameworks that govern them.
What Law Applies to Testamentary Capacity?
Testamentary capacity is governed by both statutory law and case law within various jurisdictions. In England and Wales, for example, the cornerstone case of Banks v Goodfellow (1870) sets out the criteria for testamentary capacity. According to this case, a person must understand the nature of making a will and its effects, comprehend the extent of the property of which they are disposing, be able to consider the claims to which they ought to give effect, and not be suffering from any disorder of the mind that perverts their sense of right or prevents the exercise of their natural faculties in disposing of their property by will. This legal standard has been widely adopted and remains a fundamental test for assessing testamentary capacity.
Who Can Assess Testamentary Capacity?

At Nellie, our approach to assessing testamentary capacity is rooted in the specialised expertise of our fully qualified social workers. They are adept at assessing an individual's mental and emotional capacity without directly engaging with the legal intricacies of will-making, which are handled by the solicitors who instruct us.
Our social workers focus on evaluating the individual's ability to understand and communicate their wishes, ensuring that they have the necessary support to express
their decisions regarding their will. This process is conducted with a deep respect for the individual's dignity and autonomy, emphasising a person-centred approach.
This streamlined approach allows for a more focused and empathetic assessment process, ensuring that the individual's needs and capacity are thoroughly understood and accurately documented.
By entrusting this crucial role to our social workers, Nellie ensures that testamentary capacity assessments are conducted with the utmost care, sensitivity, and professionalism, reflecting our commitment to supporting individuals in making informed decisions about their wills.
What is Testamentary Capacity?
Testamentary capacity refers to the legal and mental ability of an individual to make or alter a valid will. This involves the capability to understand the nature and implications of the act, recognise the extent of one’s assets, appreciate the claims of potential beneficiaries, and make decisions free of undue influence or mental disorders that impair judgment. Testamentary capacity is decision-specific; it is possible for an individual to lack the capacity to make other types of decisions but still possess the testamentary capacity to make a will.
The Role of Mental Capacity Assessments in Will-Making
Mental capacity assessments are instrumental in the will-making process. They serve to protect the interests of the individual making the will, ensuring that their decisions are made freely and with full understanding. These assessments also play a pivotal role in preventing future disputes among potential heirs by providing clear evidence that the will reflects the true intentions of the person at the time it was made. Conducted appropriately, mental capacity assessments uphold the autonomy and dignity of individuals, ensuring their wishes are respected and legally recognised.
Why Testamentary Capacity Assessments Are Important
Testamentary capacity assessments are crucial for several reasons. Firstly, they safeguard against the exploitation of vulnerable individuals, preventing undue influence and ensuring that the will reflects the person's genuine wishes. Secondly, these assessments provide a clear legal basis for the validity of the will, reducing the likelihood of disputes and litigation among potential heirs. Finally, by confirming an individual's capacity at the time of making the will, these assessments help uphold the integrity of the testamentary process, ensuring that estates are distributed according to the deceased's wishes, in a manner that is fair and legally binding.
Testamentary capacity assessments are a critical element in the will-making process, ensuring that individuals have the necessary legal and mental capacity to make informed decisions about the distribution of their assets. By combining the expertise of professionals, these assessments provide a robust framework for protecting the rights and wishes of individuals, ensuring that their final testament is honoured and upheld.
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