GUIDES
Trustee capacity concerns the decisions and duties of the actual trusteeship. Capacity to act and capacity to decide on retirement may require separate consideration.
Author: Nellie Supports Ltd
Publication Date: 15/05/2026
Mental Capacity Act 2005, c. 9. Available at: https://www.legislation.gov.uk/ukpga/2005/9/contents
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Trustee capacity concerns the decisions and duties of the actual trusteeship. Capacity to act and capacity to decide on retirement may require separate consideration. The sections below explain the evidence, practical steps and limits of the assessment or process.
Trustee capacity concerns the ability to make the decisions and meet the duties the actual trust requires, with appropriate support. Identify the trust, assets, beneficiaries and functions in issue, distinguishing a continuing role from a specific sale or retirement decision. If capacity is lacking, trust and property law determine the lawful route, which may involve replacement, court involvement or a qualifying attorney’s powers in a co-owned-land case.
A trustee looks after money or property for the people entitled to benefit from it. The role can involve repeated decisions, such as managing assets or considering a sale. An assessment therefore needs to identify the duties and decisions this particular trust requires. Being able to discuss one transaction does not automatically establish capacity for every other trustee decision.
Explore the distinction between legal ownership as trustee and beneficial entitlement, the trust’s purpose and assets, those who benefit and the actual decisions required. A trustee may also be a beneficiary or beneficial co-owner. They need to appreciate the separate roles and duties, rather than agree that the property can never benefit them. Ask the trust’s adviser to identify the salient powers and obligations.
Capacity to make trust decisions and capacity to decide on retirement are distinct questions. The person may be able to understand and choose retirement even if some other trustee functions are beyond them. If they cannot make the relevant decision, obtain trust-law advice on the actual powers and any qualifying attorney or court route; do not assume that every case must use an identical replacement process.
The Mental Capacity Act 2005 test still applies, but it is directed at the decisions the office actually requires: can the person understand, retain, use or weigh the information relevant to trust decisions and communicate their view, and is any inability caused by an impairment of, or disturbance in the functioning of, the mind or brain. Because trusteeship is continuing, the assessment should consider consistency over time and not just performance in a single conversation, particularly where the condition fluctuates or is progressive.
Most trusteeship questions arrive through property, because co-owners of land hold it on trust whether or not they think of themselves as trustees. When a jointly owned home is to be sold and one owner's capacity is in doubt, their capacity as trustee to join in the sale becomes a live legal issue, and conveyancers increasingly require it to be resolved on evidence before exchange. Many families first discover the trusteeship question at exactly this point, with a transaction waiting upon the answer.
Check the trust deed, statutory replacement powers, any qualifying registered LPA or EPA and the relevant title requirements with the conveyancer. Land Registry PG24 explains that a qualifying attorney may discharge trustee functions where the donor has a beneficial interest; replacement is not inevitable in every case. Where replacement under section 36(1)(b) is proposed and the trustee has a beneficial interest in possession, Court of Protection leave is required under section 36(9).
A conflict of interest can arise when a trustee’s own interests differ from those of the people who benefit from the trust. For example, a trustee may also be a beneficiary or may have a personal reason for wanting a sale. The solicitor should explain the relevant duties and how any conflict must be handled. The assessor records the person’s own account and considers pressure or influence separately from capacity. Disagreeing with other trustees does not itself show incapacity. A private conversation is arranged where appropriate to help the person speak freely.
Identify the trust, functions, decision and relevant period, with the information and duties provided by the trust’s advisers. Record support, the person’s account, evidence of each functional ability and any impairment and causal link. State the conclusion’s scope and limits. A further legal or capacity question may need separate evidence; do not promise that one report serves every subsequent application.
Assess the actual trustee functions and any separate retirement decision with support, and explain the evidence and limits. The trust’s advisers should determine the lawful response if the person cannot act, including any valid attorney route, replacement or court application. Capacity evidence does not itself establish title or authority.
No. A diagnosis alone does not establish incapacity. For a Mental Capacity Act decision, provide practicable support, examine understanding, retention, use or weighing and communication, then explain whether any inability is caused by an impairment or disturbance of mind or brain. The conclusion is specific to the decision and time.
The trust deed, an account of the trusteeship in practice, the decisions currently pending and medical records. The assessment must address the actual functions of this trusteeship, because a bare general finding answers a question the law is not asking.
Formal assessment matters when trust decisions are pending and a trustee's ability is doubted, when co-trustees or beneficiaries have raised concerns, or when a dealing with trust land is planned and the conveyancing needs certainty about who can validly act. A conclusion about one decision does not establish capacity for another.
The related pages below explain connected decisions, evidence requirements and legal processes.
Before seeking a report, write down the exact decision, relevant date, reason for concern and intended use. Gather the documents that explain the real options and any communication needs. Check any required form or court direction, agree the scope and total fee, and clarify how missing evidence or further questions will be handled.
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