Quick answer
No — an attorney under a Lasting Power of Attorney cannot change the donor’s will. The Mental Capacity Act 2005 specifically excludes will-making from the powers an attorney can exercise (s.9(4)(c) and Sch.1 para.20). This protection exists because a will is intrinsically a personal expression of the donor’s testamentary wishes and must be made by them alone while they have testamentary capacity. If a donor with capacity wants to change their will, they do so themselves (with a codicil or new will). If a donor has lost capacity, no LPA or other arrangement allows the attorney to substitute their own will choices — but a statutory will can be applied for through the Court of Protection in narrow circumstances. The same prohibition applies to substantial gifts beyond the statutory authority for ‘customary occasions’. This guide explains exactly what an LPA attorney can and cannot do in relation to a UK will, and the realistic alternatives.
Last reviewed: 24 May 2026 by the MP Estate Planning editorial team. Jurisdiction: England and Wales. Scotland and Northern Ireland have different probate and intestacy rules; the IHT thresholds are UK-wide.
Three rule changes you may need to consider (2026/27)
1. Pensions become subject to IHT from 6 April 2027. Most unused defined-contribution pension pots currently sit outside the estate for IHT — that ends on 6 April 2027 (gov.uk policy paper). HMRC estimates around 10,500 estates will face IHT for the first time as a result.
2. Business and agricultural property reliefs capped at £2.5m per person from 6 April 2026. Above the cap, only 50% relief applies — effective IHT of 20%. AIM shares dropped to 50% relief and do not use the £2.5m allowance (Saffery — APR/BPR reforms).
3. The NRB, RNRB and £2m taper threshold are frozen until 5 April 2031 following the 2024 and 2025 Budgets (gov.uk — NRB and RNRB freeze). With inflation, more estates will be pulled into IHT each year — a process commonly called “fiscal drag.”
Can a Power of Attorney change a will in the UK? The simple answer is no. A Power of Attorney (POA) cannot legally change a will. The role of a POA is to make decisions on behalf of someone who cannot do so themselves, either due to illness or incapacity. However, altering a will is beyond their legal authority. Understanding these boundaries is crucial to avoid any legal complications. If you need changes to your will, it’s essential to update it yourself or seek legal advice to ensure your wishes are honored.
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Understanding Power of Attorney and Its Limits
A Power of Attorney (POA) is a legal document that lets someone, known as the attorney, make decisions on behalf of another person, called the donor. The main purpose of a POA is to ensure that someone’s affairs are managed if they cannot do so themselves, due to reasons like illness or absence.
Types of Powers Granted to Attorneys
There are different types of POA, each with its own set of powers. For example, a Health and Welfare Lasting Power of Attorney (LPA) allows the attorney to make decisions about the donor’s medical care and daily routine. On the other hand, a Property and Financial LPA lets the attorney handle tasks like paying bills or managing the donor’s estate.
However, it’s important to note that a POA does not give the attorney the power to change the donor’s will. This is a strict legal limitation. An attorney can manage the donor’s property, pay accounts, and make financial decisions, but they cannot alter the will. This ensures that the donor’s final wishes remain intact and respected.
For instance, if the donor wants to change their will, they must have the capacity to do so themselves. If they are not capable, the only way to make changes to a will is through a court order, which is a complicated process and not expected to succeed.
In summary, while a Power of Attorney grants significant authority, it cannot be used to change a will. This safeguard protects the donor’s intentions and ensures their wishes are honored, no matter the circumstances.
Legal Framework Governing Wills and POA in the UK
Discuss the Relevant Laws and Regulations
In the UK, Wills and Power of Attorney (POA) are governed by specific laws. The Mental Capacity Act 2005 is crucial. It ensures that a person (called the donor) must have the mental capacity to make decisions about their property and affairs. If someone doesn’t have this capacity, an attorney can act on their behalf. However, this doesn’t mean the attorney can change the donor’s will.
Court Involvement in POA and Will Disputes
Sometimes, courts get involved in POA and will disputes. For instance, if there’s a disagreement about a donor’s mental capacity or if an attorney is abusing their power, the court can step in.
Consider an example: Jane is an attorney for her elderly mother. Jane starts transferring money from her mother’s account for personal use. In this case, family members can ask the court to intervene and possibly remove Jane as the attorney.
Another example is when someone feels a will isn’t valid. Maybe the person who made the will was pressured or didn’t understand what they were doing. Here, the court examines the details and decides the best course of action.
In summary, while an attorney can manage a donor’s affairs, they cannot change the donor’s will. Courts ensure that the rules are followed, protecting everyone involved.
Real-life Examples and Case Studies
Anonymized Stories and Legal Outcomes
When discussing whether a power of attorney (POA) can change a will in the UK, real-life examples can provide clarity. Let’s look at a case where a donor appointed their daughter as their attorney. The daughter wanted to make changes to the donor’s will to ensure the estate went to her. However, the court ruled that an attorney does not have the authority to change the will. The court emphasized that only the person who made the will, known as the testator, can make changes if they have the mental capacity.
In another case, a client with a lasting power of attorney (LPA) for property and financial affairs attempted to alter the terms of a will. The solicitors involved made it clear that while the attorney could manage the donor’s financial matters, they could not change the will. This precedent highlights the statutory limitations placed on attorneys regarding wills.
Legal Precedents and Court Decisions
These cases set important legal precedents. For example, the Mental Capacity Act 2005 clarifies that an LPA can make decisions about property and finances but has no power to alter a will. If someone tries to make unauthorized changes, it can lead to disputes and even court orders.
In one instance, a man used his power of attorney to transfer property into his name. The court later reversed this deed, citing misuse of power. The probate process also confirmed that the original will remained valid and unchanged. This case serves as a strong example of how courts protect the integrity of a will.
Understanding these examples helps clients and their families navigate complex legal waters and avoid unauthorized changes to wills. Always consult with qualified attorneys or solicitors for personalized advice.
Steps to Take if You Suspect Misuse of POA
If you think someone is misusing a Power of Attorney (POA), follow these steps to protect the person who gave the power, called the donor.
Contacting a Solicitor for Legal Advice
First, get legal advice. It’s crucial to consult a solicitor who specializes in wills and POA. They can guide you on what to do next. To find a qualified solicitor, ask for recommendations or look for reviews online.
Gather Evidence
Collect all related documents. This includes bank statements, deeds, and any communication that shows how the POA is being used. The more evidence you have, the stronger your case will be.
Speak to the Donor
Talk to the donor if they have the mental capacity. Ask if they are aware of the misuse. Their input is essential and can help the solicitor understand the situation better.
Contact the Office of the Public Guardian (OPG)
Report your concerns to the OPG. They oversee the actions of people with POA. You can file a complaint, and they will investigate the matter.
Going to Court
If necessary, take the issue to court. Sometimes, misuse can be severe, and a judge may need to intervene. Your solicitor can help you prepare for this step.
Example Scenario
Imagine your uncle gave POA to his friend to manage his property. You notice unusual withdrawals from his account. By following these steps, you can ensure your uncle’s assets are safeguarded.
Remember, misuse of POA is serious. Act quickly to protect your loved one’s interests.
Ensuring Your Will Reflects Your Wishes
Steps to Future-Proof Your Will
Creating a will is essential to ensure your wishes are followed after you pass away. But simply making a will isn’t enough; you need to future-proof it. This means regularly reviewing and updating your will as life changes. For instance, if you buy new property, have more children, or someone named in the will passes away, these are prime times to update it.
Advise on Regularly Updating Your Will
It’s smart to review your will every few years or after significant life events. This helps you make necessary changes to keep your will accurate. For example, if your circumstances change, like getting married or divorced, you should update your will to reflect these changes. Clear instructions on what to do with your estate can prevent disputes among your loved ones.
Importance of Clear Instructions and Communication
Clear instructions in your will are crucial. They show what you want to happen with your property and other assets. Communicate your wishes to your executors and attorneys. Tell them where to find key documents and how to carry out your wishes. For example, if you have set up a power of attorney, make sure the person knows their role. A power of attorney cannot change your will, but they can manage your affairs if you’re unable to do so yourself.
By keeping your will updated and having clear instructions, you ensure your wishes are respected. Talk to a solicitor if you need help updating your will. They can give you advice and make sure your will is legally sound.
Protecting Your Estate and Wishes
Understanding the limitations of a Power of Attorney is crucial in ensuring your will remains unchanged and your estate is protected. Regular updates to your will and clear communication with your executors are essential. Legal advice from MP Estate Planning can offer peace of mind, safeguarding your assets from potential threats. If you’re ready to secure your financial future, book a free consultation call with us today. Our team are here to guide you through every step, ensuring your wishes are respected and your estate is protected. Don’t wait—take action now to protect your legacy.
What Is a Power of Attorney? Types Recognised in UK Law
Before examining whether a Power of Attorney can change a will, it is worth being clear about what a Power of Attorney actually is and the specific forms it takes under English and Welsh law. A Power of Attorney is a legal document that authorises one person — the attorney — to act on behalf of another — the donor — in matters defined by the document itself. The scope of that authority varies significantly depending on which type of POA has been granted.
The primary legislation governing Lasting Powers of Attorney in England and Wales is the Mental Capacity Act 2005, which replaced the earlier Enduring Power of Attorney framework and introduced stronger safeguards for donors. It is worth noting that the rules described here apply to England and Wales; Scotland and Northern Ireland operate under separate legislation.
Lasting Power of Attorney for Property and Financial Affairs
This type of LPA generally permits the attorney to manage the donor’s bank accounts, pay bills, sell property, and handle investments. It may be used while the donor still has mental capacity — if the donor has chosen to allow this — or it may be restricted to use only when capacity has been lost. In our experience, this is the form of POA most likely to intersect with estate planning concerns, because an attorney managing financial affairs has meaningful influence over what assets actually remain in the estate at the point of death. Crucially, however, the attorney has no authority whatsoever to alter the donor’s will or redirect testamentary gifts.
Lasting Power of Attorney for Health and Welfare
This type of LPA covers decisions about medical treatment, care arrangements, and day-to-day personal welfare. It can only be used once the donor has lost mental capacity. While it does not directly touch financial assets, decisions made under a health and welfare LPA — such as moving a donor into residential care — can indirectly affect the value of the estate.
Registration and the Office of the Public Guardian
An LPA has no legal effect until it has been registered with the Office of the Public Guardian (OPG). As of 2024, the registration fee is £82 per LPA. An unregistered LPA cannot lawfully be used, and any financial institution presented with one is entitled — and typically expected — to refuse it. Once registered, the attorney’s duties when managing estate assets are also shaped by the Trustee Act 2000, which imposes a duty of care and requires attorneys to act in the donor’s best interests rather than their own.
On the specific question of whether an attorney can change beneficiaries or make themselves a beneficiary: no. An attorney has no power to amend a will, execute a new will on the donor’s behalf, or alter the distribution of assets after death. What an unchecked attorney can do — and this is the practical risk our team sees families confront — is dispose of, gift, or reorganise assets during the donor’s lifetime in ways that mean the will, while legally unchanged, applies to a substantially depleted estate. The law is clear on paper; the vulnerability lies in practice.
Common Questions About Power of Attorney and Wills
Can a POA make themselves a beneficiary?
An attorney cannot use their POA to alter a will or insert themselves as a beneficiary of the donor’s estate. Doing so would almost certainly constitute a serious breach of fiduciary duty and may amount to fraud. The Office of the Public Guardian has powers to investigate attorneys who are suspected of acting in their own interests rather than the donor’s, and the Court of Protection may revoke an LPA and order the attorney to repay misappropriated assets. In our experience, gifts made by an attorney to themselves — even modest ones — are among the most common triggers for OPG investigations. Any gift an attorney makes on the donor’s behalf must generally be reasonable, proportionate, and consistent with the donor’s known wishes.
Do you need a lawyer to write a codicil?
There is no strict legal requirement in England and Wales to involve a solicitor when adding a codicil — a written amendment — to an existing will. However, a codicil must meet the same formal execution requirements as a will itself: it must be signed by the testator in the presence of two independent witnesses, who must also sign. Errors in execution are a surprisingly common reason codicils are later challenged. Given that a poorly drafted codicil can create ambiguity or unintentionally revoke provisions the testator wished to preserve, our team would generally recommend taking professional guidance, particularly where the estate is complex or family circumstances have changed.
What happens to a POA after the donor dies?
A Lasting Power of Attorney automatically ceases to have effect on the death of the donor. From that point, the attorney has no further authority to deal with the deceased’s assets or affairs. Control passes instead to the executor named in the will — or, where there is no will, to an administrator appointed under the rules of intestacy. This is a distinction that matters considerably in practice: families sometimes assume an attorney can continue to manage an estate after death, but this is not the case. The will — or intestacy rules — takes over entirely, which is precisely why the composition of the estate at the point of death is so important.
Is a UK Power of Attorney valid in the USA?
Generally, a UK Lasting Power of Attorney will not be automatically recognised or accepted in the United States. The USA does not have a single federal framework for POA; each state has its own rules, and foreign instruments are typically treated with caution by US financial institutions and legal bodies. Where a donor has assets in both the UK and the USA, it may be necessary to execute a separate power of attorney document that complies with the relevant US state law. Our team would recommend taking advice from a US-qualified attorney alongside UK estate planning guidance in such circumstances.
What is the UK equivalent of power of attorney?
The term power of attorney is used in the UK as well, so there is no direct equivalence issue for UK residents. However, the specific instrument most comparable to what other countries call a durable or enduring power of attorney — one that remains valid after the donor loses mental capacity — is the Lasting Power of Attorney, introduced under the Mental Capacity Act 2005. Older Enduring Powers of Attorney (EPAs) created before October 2007 may still be valid if properly executed and can be registered with the OPG, though they cover only property and financial affairs and offer fewer safeguards than a modern LPA.