Understanding Mental Capacity Assessment For LPA & Will Writing

by 2 July 2025Knowledge & Insights

Understanding Mental Capacity Assessment For LPA & Will Writing

In Singapore, mental capacity plays a key role in two important legal processes: setting up a Lasting Power of Attorney (LPA) and writing a will. Though they serve different purposes, both require the person involved to understand what they’re doing and why.

A mental capacity assessment for a will or LPA helps confirm that a person is capable of making decisions at the time of signing. This protects not just their wishes, but also prevents future challenges from family members or third parties.

 

Understanding The Lasting Power Of Attorney (LPA)

Understanding The Lasting Power Of Attorney (LPA)

Many people think about wills when it comes to future planning, but what happens if someone loses the ability to make decisions before they pass away? That’s where the Lasting Power of Attorney (LPA) comes in.

An LPA is a legal document that allows a person, referred to as the donor, to appoint someone they trust, known as the donee, to make decisions on their behalf if they lose mental capacity one day. These decisions can relate to their personal welfare, medical care, or property and financial matters.

Setting up an LPA gives peace of mind that someone responsible will step in if needed. But this legal tool only works if the donor has mental capacity at the time the LPA is created and signed. That’s why in certain cases, a mental capacity assessment is needed, especially if the donor is elderly, has a medical condition, or if there might be concerns raised by family members later on.

In Singapore, before an LPA can be registered with the Office of the Public Guardian, a certificate issuer (a lawyer, psychiatrist, or doctor) must certify that the donor understands the LPA. This acts as a safeguard against abuse and ensures the donor isn’t being pressured or misled.

If mental capacity is already lost, it’s too late to make an LPA. Instead, loved ones must apply to the Court to be appointed as a deputy, a more complex and expensive process. That’s why it’s always better to act early while the person can still make these important decisions for themselves.

 

Will Writing: It’s More Than Just Listing Assets

When most people think about writing a will, they picture a list of who gets what. But there’s more to it than simply dividing up belongings. A will represents a person’s final say about how their estate should be handled, and it needs to meet certain legal requirements to be valid in Singapore.

One of the most important requirements is that the person writing the will, called the testator, must have full mental capacity at the time of making it. This means they must be able to:

  • Understand what a will is and what it does
  • Know the extent and value of their assets
  • Recognise who might reasonably expect to benefit from their estate (like family members or dependents)
  • Make choices freely, without influence or pressure

If there’s any doubt about these abilities, perhaps because the person is showing signs of dementia, recovering from a stroke, or has been under medication, a mental capacity assessment for will can help establish a clear record of their decision-making ability at the time of signing.

Having this assessment can also discourage disputes after death. Inheritance disagreements are painful and can split families apart. A well-documented assessment shows that the testator knew exactly what they were doing, and it strengthens the legal standing of the will.

Writing a will may seem straightforward, but it’s a deeply personal and legally binding act. It deserves careful thought, and sometimes, the added layer of medical and legal assurance.

 

How Is Mental Capacity Assessed?

How Is Mental Capacity Assessed

A mental capacity assessment isn’t just about a quick chat or ticking boxes. It’s a structured process that checks whether someone can make a specific decision at a specific point in time. In the context of wills and LPAs, this decision is about how they want their affairs to be handled, now or in the future.

In Singapore, the assessment follows the two-stage test under the Mental Capacity Act:

  1. Is there an impairment of, or disturbance in, the functioning of the mind or brain?
    This could include conditions like dementia, stroke, brain injury, mental illness, or temporary confusion from illness or medication.
  2. Does this impairment affect the person’s ability to make the decision in question?
    The assessor checks if the person can:

    • Understand the relevant information
    • Retain that information long enough to make a decision
    • Use or weigh that information when making their decision
    • Communicate the decision clearly, whether verbally or through other means

The assessment is usually carried out by a doctor, psychiatrist, or trained medical professional. In cases where a formal report is needed (especially for legal protection or future disputes), the doctor will issue a written statement certifying the person’s mental capacity.

It’s important to note that capacity is decision-specific. A person might be able to decide what to eat for lunch, but not understand the implications of appointing someone to control their finances. That’s why the assessment must be done in context, based on the exact decision being made.

By arranging a mental capacity assessment before writing a will or registering an LPA, individuals and families are taking responsible, proactive steps to avoid problems later on.

 

Conclusion Mental Capacity Assessment For LPA And Will Writing

Planning a will is one of the most personal decisions you’ll ever make. Ensuring that you, or your loved one, has the proper mental capacity not only protects your wishes but also helps avoid family disputes in the future.

If you’re unsure about whether a mental capacity assessment for a will is needed or how to go about arranging one, reach out to us at Tembusu Law, home to the best criminal lawyers and family lawyers in Singapore.

Let us help you protect your legacy. Contact us today for a free discovery call.

 

Frequently Asked Questions Mental Capacity Assessment For LPA And Will Writing

Who Can Conduct A Mental Capacity Assessment For A Will?

Doctors, typically general practitioners or psychiatrists trained in such assessments, can evaluate mental capacity for a will in Singapore.

Can A Will Be Contested If Mental Capacity Is In Doubt?

Yes, if there’s reason to believe the person lacked mental capacity when making the will, it can be challenged in Court.

Is A Mental Capacity Assessment Legally Required For All Wills?

No, it’s not required by default. However, it is strongly recommended if there are signs of cognitive issues or concerns about future disputes.

What Happens If Someone Loses Capacity Before Making A Will?

If mental capacity is lost before a will is made, their estate will be handled according to Singapore’s Intestate Succession Act.

Can A Family Member Request A Mental Capacity Assessment?

Yes, especially if they notice changes in behaviour or memory. It’s often a wise step to prevent future legal issues.

About the author

About the author

Jonathan Wong

Jonathan is the Founder and Managing Director of Tembusu Law. He is also the founder of LawGuide Singapore, a prominent legaltech startup which successfully created and launched Singapore’s first legal chatbot in 2017.