Author and Publication
Author: Nellie Supports Ltd
Publication Date: 15/05/2026
Citation
The Non-Contentious Probate Rules 1987, SI 1987/2024. Available at: https://www.legislation.gov.uk/uksi/1987/2024/contents
Copywright
Copyright © 2026 Nellie Supports Ltd. All rights reserved.
This article is made available for general information, education and professional reference. It may be downloaded, printed and shared for non-commercial purposes, provided that it is reproduced in full, is not altered in any way, and is properly cited as the work of Nellie Supports Ltd. This material must not be edited, adapted, sold, republished, incorporated into commercial products, or used for commercial training, assessment, report-writing or advisory services without prior written permission from Nellie Supports Ltd.
This article does not constitute legal advice, clinical advice or a substitute for a decision-specific professional assessment. Where legislation, government guidance, court forms or external professional materials are referred to, those materials remain subject to their own copyright, licensing and re-use terms.
Mental capacity and applying for a Grant of Representation
When someone entitled to apply for a Grant of Representation, an executor or an administrator, lacks mental capacity to act, probate does not stop; it reroutes. The probate registry needs evidence of the incapacity, usually the PA14 medical certificate, and the grant can then be taken by someone acting on the incapacitated person's behalf, such as their attorney under a registered Lasting Power of Attorney or their Court of Protection deputy, for the person's use and benefit. This guide explains how capacity affects who can apply, the evidence the registry expects and where the PA14 fits in the process.
Where capacity meets the grant
A grant of representation, probate where there is a will, letters of administration where there is not, puts the legal authority to administer an estate into named hands, and capacity meets it at the threshold: the person entitled to apply must be able to take on the role. Where an executor or entitled administrator lacks that capacity, the estate cannot simply proceed through them, and probate practice provides routes for the authority to pass lawfully to someone who can act.
The capacity the role requires
Administering an estate is sustained financial decision-making: gathering assets, paying debts and taxes, keeping accounts, instructing professionals and distributing to beneficiaries, with personal liability attaching to mistakes. The capacity question is whether the person can understand, retain, use or weigh the information this role involves and communicate their decisions within it, assessed under the Mental Capacity Act 2005 with any inability tied causatively to an impairment of, or disturbance in the functioning of, the mind or brain.
Executors who cannot act
Where a named executor lacks capacity, the will's machinery and probate practice take over: other named executors can prove the will without them, and where none can act, those next entitled apply, supported by evidence of the incapacity, commonly the PA14 certificate. The incapacitated executor is not blamed or bypassed informally; their inability is evidenced and the grant issues to those who can lawfully carry the estate, preserving both the administration and the validity of everything done within it.
Attorneys taking the grant
Where the person who lacks capacity holds a registered property and financial affairs LPA, or an enduring power of attorney properly registered, their attorney can usually apply for the grant for their use and benefit, marrying the two regimes: the instrument the person made whilst capacitous now carries their probate entitlement too. The application is supported by the registered instrument and capacity evidence, and it is often the cleanest route where planning was done in time.
Where there is no attorney: the deputyship connection
Where no attorney exists, the route may run through the Court of Protection: a deputy for property and affairs, appointed on COP3 evidence, can seek authority connected with the person's estate entitlement. This is slower and costlier than the attorney route, which is itself the standing argument for LPAs made in good time, and where a deputyship is already in place, the deputy and the probate application should be coordinated so the two authorities mesh rather than duplicate.
Beneficiaries who lack capacity
Capacity also meets the grant from the beneficiary's side. A beneficiary who cannot manage their inheritance does not lose it, but receiving it needs lawful machinery: payment to an attorney or deputy, or trust arrangements, rather than transfers to someone who cannot manage them or informal handling by relatives. Personal representatives distributing to an incapacitous beneficiary without proper authority in place expose themselves, and capacity evidence identifies exactly where that machinery is needed.
The evidence that carries these applications
Across every route the load-bearing element is capacity evidence fit for its purpose: recent, decision-specific to the estate role, substantiated by a real assessment and consistent across the PA14, the probate forms and any Court of Protection papers. One properly conducted assessment can serve all of them, whilst inconsistent or threadbare evidence generates requisitions from the registry and questions from the court, stalling an estate that the evidence existed to move.
Sequencing for families and practitioners
The practical order: establish early whether any executor, applicant or major beneficiary may lack capacity; obtain a decision-specific assessment before papers are drafted; check for registered LPAs or EPAs and use the attorney route where it exists; commission the PA14 from an author who can substantiate it; and where the Court of Protection must be involved, let the same assessment found that application too. Estates stall on discovered incapacity and proceed on evidenced incapacity, and the difference is sequencing.
Key takeaway
Mental capacity shapes a grant of representation at every seat around the table: the executor who cannot act, the attorney or deputy who acts instead and the beneficiary who cannot receive unaided. Identify the question early, evidence it with one recent decision-specific assessment and route the authority through the proper machinery, and the estate administers itself around the incapacity rather than being administered by it.
Frequently asked questions
Does a diagnosis automatically mean someone lacks capacity?
No. A diagnosis may explain why capacity is in doubt, but it does not answer the legal question. The assessment must still consider the specific decision, the relevant information, the support provided and whether the person can understand, retain, use or weigh that information and communicate a decision.
What evidence is useful for PA14 Probate Mental Capacity Assessment?
The PA14 certificate completed by a professional who has assessed the person, the LPA or deputyship order of whoever will apply instead, and the usual probate papers. The registry's question is narrow: is this person unable to manage their affairs, evidenced properly?
When is a formal assessment for PA14 Probate Mental Capacity Assessment useful?
Assess formally when the executor's or administrator's ability is in genuine doubt, when family members disagree about it, or when the estate's value means the grant may later be examined. Clear evidence at the start prevents challenges later.
Related mental capacity assessment pages
These internal links help readers move from this guide to the most relevant Nellie Supports service page, assessment option or legal framework page.
Executor or administrator lacking capacity?
Nellie Supports completes PA14 probate capacity assessments across England and Wales, with a same working day response to every enquiry and every report peer reviewed before delivery. Call 0333 987 5118 or visit the PA14 probate assessment service page.