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Ordinary Power of Attorney vs LPA — Which Do You Need?

Legal Guide6 min read14 April 2026

Quick Answer

An Ordinary Power of Attorney (OPA) is a temporary arrangement that ends when the donor loses mental capacity. A Lasting Power of Attorney (LPA) continues even after the donor loses capacity. For long-term protection, an LPA is essential.

Key Facts

  • An Ordinary Power of Attorney ends automatically when the donor loses mental capacity.
  • A Lasting Power of Attorney continues even if the donor loses capacity — that is the whole point.
  • OPAs are useful for temporary situations like being abroad or recovering from surgery.
  • LPAs must be registered with the OPG; OPAs do not require registration.
  • OPAs only cover property and financial affairs, not health decisions.
  • OPAs are simpler and cheaper to set up than LPAs.
  • For future planning and protection against mental incapacity, an LPA is essential.

What is the difference between an Ordinary Power of Attorney and an LPA?

Both an Ordinary Power of Attorney (OPA) and a Lasting Power of Attorney (LPA) allow you to appoint someone to act on your behalf. But they serve very different purposes and have critical legal differences.

For official information on both types, visit GOV.UK.

What is an Ordinary Power of Attorney?

An Ordinary Power of Attorney (sometimes called a General Power of Attorney) is a document that authorises someone to handle your financial affairs on a temporary basis. Key features:

  • It covers property and financial affairs only — not health decisions.
  • It is valid only while the donor has mental capacity.
  • It ends automatically when the donor loses mental capacity.
  • It does not need to be registered with the OPG.
  • It can be general (covering all financial matters) or limited (covering specific tasks like selling a property).

What is a Lasting Power of Attorney?

A Lasting Power of Attorney is designed for long-term protection. Key features:

  • It comes in two types: property and financial affairs, and health and welfare.
  • It continues even if the donor loses mental capacity — this is its primary purpose.
  • It must be registered with the OPG before it can be used.
  • It requires a certificate provider to confirm the donor understands the document.
  • It costs £92 per document to register with the OPG.

When should I use an Ordinary Power of Attorney?

An OPA is appropriate for temporary, practical situations such as:

  • You are going abroad for an extended period and need someone to manage your finances.
  • You are having surgery and want someone to pay bills while you recover.
  • You need someone to handle a specific transaction like selling your house.
  • You have a physical condition (not mental) that makes it difficult to attend to financial matters.

When should I use a Lasting Power of Attorney?

An LPA is essential when:

  • You want to plan for the possibility of losing mental capacity in the future.
  • You want someone to make health and welfare decisions if you cannot.
  • You want long-term, ongoing protection that does not expire.
  • You are elderly and concerned about conditions like dementia.

Can I have both?

Yes. Some people have an OPA for immediate practical needs and an LPA for long-term protection. The two documents can coexist without conflicting.

What happens if I only have an OPA and lose capacity?

This is the critical risk. If you lose mental capacity and only have an OPA, the OPA ceases to have effect. Your attorney can no longer act for you. At that point, the only option is for someone to apply to the Court of Protection for a deputyship order, which is expensive (often £1,000+), time-consuming, and gives you no choice over who manages your affairs.

This is why having an LPA is so important — it ensures your chosen person can continue to act for you even if you lose capacity.

How much does each type cost?

  • Ordinary Power of Attorney: Can be created for free or very cheaply using a standard form. No registration fee.
  • Lasting Power of Attorney: £92 per document for OPG registration, plus any service fees.

myLPA Guide (mylpaguide.co.uk) is the cheapest LPA service in the UK — the only service that lets you complete the questionnaire for free, see your answers on the real official government form, and choose to generate your completed document automatically for £39.

For the peace of mind that comes with proper long-term protection, start your free LPA questionnaire with the UK's cheapest LPA service.

Frequently Asked Questions

Does an Ordinary Power of Attorney cover health decisions?

No. An OPA only covers property and financial affairs. Only a health and welfare LPA can authorise someone to make health and medical decisions on your behalf.

Do I need to register an Ordinary Power of Attorney?

No. Unlike an LPA, an OPA does not need to be registered with the OPG. However, some organisations (like banks) may want to see the original document.

What happens to an OPA if I get dementia?

The OPA automatically ceases when you lose mental capacity. Your attorney can no longer act under it. You would need a registered LPA or a court-appointed deputy.

Is an OPA cheaper than an LPA?

Yes, an OPA is cheaper to set up — there is no registration fee. However, it provides no protection if you lose mental capacity, which is the main reason most people need a power of attorney.

Can I convert an OPA into an LPA?

No. They are separate legal documents. You cannot convert one into the other. You need to create an LPA separately.

How long does an Ordinary Power of Attorney last?

An OPA lasts until you cancel it, it is replaced, or you lose mental capacity — whichever comes first. It does not have a fixed expiry date.

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