Caring for a Parent With Dementia: When to Start the LPA Process

Why timing matters with dementia

Dementia progresses unevenly. A parent may manage familiar routines for months while struggling with new information or complex decisions. Capacity under the Mental Capacity Act 2005 is decision-specific and time-specific — someone is not simply "capable" or "incapable" in all situations at once.

An LPA can only be created while the donor understands what the document is, who they are appointing, and what powers they are granting. If capacity is lost before an LPA is signed and registered, the family cannot simply complete the forms later on the parent's behalf. The alternative is a Court of Protection deputyship application — slower and more expensive.

Families often delay because the diagnosis feels early or because broaching the topic feels uncomfortable. Delay reduces the margin for OPG's 14–20 week registration queue and increases the risk that capacity will be insufficient before registration completes.

Signs the window is still open

A useful practical test is whether the parent can engage with the LPA conversation: do they understand that they would be choosing someone to help with decisions if they become unable to manage? Can they name people they trust? Do they grasp the difference between financial and health decisions at a basic level?

A GP or memory clinic may assess capacity if there is doubt. Capacity assessments are decision-specific — a clinician might conclude the person retains capacity to make an LPA even if they need support with finances day to day. Conversely, moderate dementia may already rule out LPA creation if understanding is too impaired.

The certificate provider on the LPA form also plays a role: they must confirm the donor understands the LPA and is not under undue pressure. If the provider has concerns, they should not sign — and the family should seek professional guidance rather than shopping for a more permissive provider.

How to raise the subject with a parent

Many families find it helps to frame an LPA as practical planning — like making a will or insuring the house — rather than as surrendering control. Emphasise that the parent chooses attorneys and can include preferences about care and finances. An LPA does not strip away rights on signing; for health and welfare, it only operates once capacity for a specific decision is lost.

Choose a calm moment, not a hospital discharge or the day after a frightening diagnosis. Offer to organise paperwork but make clear the parent's choices drive the content. Pressure from family members can invalidate the certificate provider's confirmation and cause OPG to refuse registration if challenged.

If siblings disagree on timing, resolve that privately before involving the parent. Presenting a united, low-pressure approach reduces stress on someone who may already be anxious about memory changes.

Which LPAs to prioritise

Families supporting a parent with dementia often need both Property and Financial Affairs and Health and Welfare LPAs, but urgency may differ. If bills are going unpaid or accounts are being accessed inappropriately, financial LPA registration may be the immediate priority. If care home placement or treatment decisions loom, health and welfare matters more.

Each LPA is a separate form, fee (£92 each — verify on GOV.UK), and registration queue. Submitting both together is efficient if capacity allows completion of both forms in one planning phase.

If only one LPA type is completed before capacity is lost, the family retains partial cover — better than none, but gaps remain until deputyship or other processes fill them.

The 14–20 week registration risk

In 2026, OPG registration typically takes 14 to 20 weeks from receipt of a complete application. During that wait, an unregistered LPA cannot be used — even if the donor's capacity is declining.

If the donor loses capacity before registration completes, attorneys cannot act under that LPA. The family may need to apply for interim deputyship or use existing joint accounts and best-interests processes for urgent welfare decisions — neither replaces a registered LPA in the long term.

Starting the process at the earliest point where capacity is clearly sufficient builds in buffer time. Correct first submission avoids rejection and another full queue.

If capacity is already too limited

When a parent can no longer understand an LPA, the Court of Protection is the route for appointing a deputy. Deputyship applications commonly take six months or more, involve court fees and often legal costs, and result in ongoing supervision by OPG. Welfare and financial deputyships may require separate applications.

Deputyship is not a failure — it is the legal fallback when planning did not happen in time. But it is more intrusive for the person lacking capacity and more burdensome for the family than a registered LPA prepared earlier.

Some families discover an old Enduring Power of Attorney (EPA) signed before October 2007. EPAs can still be registered if not already done, but only cover property and financial affairs — not health and welfare.

Supporting a parent while paperwork is in progress

While LPA forms are being completed and registered, families can still help practically within legal limits: setting up third-party mandates at banks where allowed, attending appointments with consent, and documenting care preferences informally. These steps do not replace attorney authority once capacity is lost.

Keep copies of diagnoses, medication lists, and care plans organised — attorneys will need them later. Use the registration wait to agree among siblings who will take the lead on OPG correspondence and who will be primary attorneys.

The KinClarity Lasting Power of Attorney (LPA) Setup Support Assessment helps families in England and Wales identify timing risks, document gaps, and common OPG rejection triggers before submitting an application. It supports preparation; it does not assess a parent's capacity or provide medical or legal advice.

The KinClarity Lasting Power of Attorney (LPA) Setup Support Assessment helps people preparing an LPA application in England and Wales identify common delay risks, signing-order errors, and readiness gaps before submitting to the Office of the Public Guardian.

Related articles

• Power of Attorney complete guide (pillar)
• LPA Application Mistakes: The Most Common Reasons for OPG Rejection
• How Long Does an LPA Take to Register? 2026 OPG Timescales
• Property and Financial Affairs LPA vs Health and Welfare LPA: Which Do You Need?
• Choosing an LPA Attorney: What to Consider Before You Decide