LPA for Dementia in Wales — What You Can Still Do and When It's Too Late

A Diagnosis Is Not a Capacity Ruling

One of the most damaging misconceptions in Welsh families is that a dementia diagnosis makes it "too late" for a Lasting Power of Attorney. It does not. The Mental Capacity Act 2005 draws a clear line between a medical diagnosis and a legal capacity assessment — they are different things.

Capacity is decision-specific and time-specific. A person with early-to-moderate dementia may lack capacity to manage complex investment portfolios while still having full capacity to understand what an LPA does, who they are appointing, and what powers they are granting. That is the legal threshold for signing one.

The real deadline is not the diagnosis. It is the point at which the person can no longer demonstrate understanding of the document during the certificate provider's assessment.

How the Certificate Provider Assessment Works

Every LPA requires an independent certificate provider to confirm that the donor understands what they are signing and is free from undue pressure. For someone with dementia, this is the make-or-break step.

Who should be the certificate provider? Ideally, the donor's own GP or a solicitor experienced in capacity assessments. A GP who already knows the patient can assess capacity in a familiar setting, which often produces a better result than a stranger asking questions in an unfamiliar office.

Timing matters. People with dementia often have better cognitive function at certain times of day — typically mornings, before fatigue sets in. Scheduling the signing appointment for a "good time" is not gaming the system; the Mental Capacity Act explicitly recognises that capacity can fluctuate and requires assessors to facilitate the best possible conditions.

What the certificate provider looks for:

• Can the person explain what an LPA is in their own words?
• Can they name who they are appointing and why?
• Can they describe what decisions the attorney would make?
• Are they making this choice freely, without pressure from family members?

If the certificate provider is satisfied, they sign Section 10 and the LPA proceeds normally.

When It Is Genuinely Too Late

If a person with advanced dementia cannot pass the certificate provider's assessment — even on their best day, with support — they cannot create a valid LPA. If there is no valid EPA, the family's only route to legal authority is a Court of Protection deputyship.

Deputyship is slower, more expensive, and more restrictive:

• £432 court filing fee (from 13 July 2026)
• COP3 capacity assessment from a registered medical practitioner (£100–£300 privately)
• 4–6 months for the court to process the application
• £320 per year in OPG supervision fees once appointed
• A mandatory security bond to protect the person's assets

During those months, the person's bank accounts are typically frozen. Care placements cannot be authorised by family members. Medical decisions default to the clinical team's assessment of best interests, not the family's preferences.

What to Do Right Now

If your parent or spouse has received a dementia diagnosis and does not have a registered LPA, act immediately. The registration process takes 8–12 weeks digitally or 12–16 weeks by paper after the complete application reaches the OPG, so every week of delay matters.

Contact your parent's GP to discuss whether a capacity assessment is feasible. Book the signing for a morning slot on a day when the person is typically most alert. Have the document drafted and ready before the appointment — the government's free online tool at gov.uk/power-of-attorney handles the drafting.

The Wales Capacity Protection Toolkit includes a capacity-assessment preparation checklist and a signing-day timeline designed for families navigating exactly this situation.

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