When someone makes a will in Australia, the law doesn’t just accept it at face value. The person needs something called testamentary capacity, which is the mental ability to understand what they’re doing when they sign that document. Without it, the will can be challenged and declared invalid.
This creates problems for families. You might watch someone you care about struggle with their health while trying to finalise their estate. Or you could be an executor facing questions about whether the testator had a sound mind when they made their will. Australian society encounters these situations more frequently as our aging population deals with dementia and cognitive impairment.
We’ll walk you through what testamentary capacity means, the legal test courts use to assess it, and what happens when capacity is missing.
Let’s start with the basics.
What Does Testamentary Capacity Mean?
Put simply, testamentary capacity is the mental ability you need to make a valid will under Australian succession law. It means you understand what you’re doing when you sign the document, you know what assets you own, and you’re aware of who might reasonably expect to benefit from your estate.
The person making the will needs to grasp these things at the specific moment they sign. They don’t need detailed legal knowledge about technical provisions or complex succession law rules; a basic understanding is enough.
The law just wants to confirm that they comprehend the nature and effect of what they’re doing with their property after death.
Below are the questions that come up most often with testamentary capacity:
When Do You Need Testamentary Capacity?
You need testamentary capacity at the exact moment you sign your will. The timing here is what the courts care about the most. A person might have capacity one day and lose it the next, so the assessment focuses on that specific point in time when they put pen to paper.
Solicitors and doctors assess this most often when elderly people make wills or when family members raise concerns about dementia. The truth is, advanced age alone doesn’t automatically mean someone lacks capacity, but it often triggers closer scrutiny.
Why Is Testamentary Capacity Important?
Capacity protects your will from being challenged and overturned down the track. Without proper testamentary capacity, courts can set the entire document aside during probate proceedings (and the damage adds up fast).
When capacity is missing, it often triggers disputes between family members over how the estate should be distributed. In some complex cases, courts may even need to consider whether a statutory will application is appropriate.
These cases end up in court, cost thousands in legal fees, and create lasting rifts in families who are already dealing with loss.
What Is the Test for Testamentary Capacity? (Banks v Goodfellow)
Australian courts use the Banks v Goodfellow test, which sets out four requirements: understanding the will’s nature, knowing your property, considering who should inherit, and having no mental disorder that influences the dispositions in the will.
This case law from 1870 still provides the correct test that judges apply today when they need to determine testamentary capacity. The test asks whether the testator understood these separate things when they made their will:
- Understanding the Nature and Effect of a Will: The will maker needs to grasp what the document does legally and know that it replaces any previous will they made. This doesn’t require detailed knowledge about technical provisions since the law accepts that someone can have sufficient capacity even if they don’t know every legal term or consequence.
- Knowledge of the Extent of Property: Courts accept approximations when the testator understands the broad scope of what they own in general terms. So if someone forgets about a small bank account but knows their house and major assets, that’s usually enough to meet this requirement.
- Understanding the Claims of Potential Beneficiaries: When making a will, the person must consider who might reasonably expect to inherit from the estate. This includes spouses, children, and other family members who have moral claims on the property based on their relation to the testator. The testator can also exclude beneficiaries entirely, but they need to understand who they’re leaving out.
- Absence of a Mental Disorder Influencing the Will: The Goodfellow test recognises that someone might have a condition but still possesses their natural faculties for will-making. What counts is whether any insane delusion or disorder directly influenced the specific gifts made in the will.
All four elements must be satisfied at the same time for the will to be valid under this established test.
How Do Professionals Assess Testamentary Capacity Before a Will Is Made?
Solicitors and doctors assess capacity through questioning, observation, and sometimes formal medical examinations. These professional assessments create records that prove capacity existed if disputes arise later.
Here’s how each professional contributes to the assessment:
Role of the Solicitor
Solicitors provide important evidence through their observations and detailed file notes if disputes arise later.
When taking will instructions, solicitors question clients about their assets, family members, and reasons for their chosen distributions. The answers show whether the testator understands the extent of their wealth and the claims others might have.
They also observe demeanour, communication ability, and understanding throughout the entire will-making process. The solicitor’s assessment of testamentary capacity includes watching for signs like:
- Can the client follow the conversation?
- Do they grasp what’s being explained?
In our experience with estate disputes, proper documentation at this stage often decides the outcome when someone challenges capacity in court.
Role of Medical Practitioners
Medical practitioners assess capacity differently from lawyers do. In practice, they look at the person’s mental capacity through clinical examinations that test memory, judgment, and mental state.
Doctors document diagnoses, medications, or conditions that might affect mental capacity in detailed medical reports. These reports might note dementia, cognitive impairment, or other disorders that could impact the testator’s ability to make a valid will.
Bottom Line: The medical opinion provides expert evidence supporting or questioning whether testamentary capacity existed at signing.
Capacity Assessments and File Notes
When someone challenges a will, judges look for documentation made at the time of signing. So, solicitors and doctors record their assessments in contemporaneous written notes and reports.
A solicitor’s file note might describe the questions asked, the testator’s responses, and observations about their understanding. And medical records capture test results, diagnoses, and the doctor’s professional opinion about client’s mental state.
Later court proceedings rely heavily on these contemporaneous records when determining whether capacity existed.
How Do Australian Courts Determine Testamentary Capacity?
Australian courts, including the Supreme Court of Queensland, apply the Banks v Goodfellow test and examine all available evidence from the will execution.
This way, judges don’t just tick boxes on the legal test. Instead, they weigh every piece of evidence to build a complete picture of the person’s mental state when they signed.
Courts look at three main types of evidence:
- Application of the Banks v Goodfellow Test: Judges assess whether each of the four Banks v Goodfellow elements was satisfied. The same test applies in every case, regardless of the will maker’s age, health conditions, or specific circumstances.
- Consideration of Medical Evidence: Judges review relevant medical reports, doctor assessments, and diagnoses from around the will-signing date carefully. Expert medical testimony helps judges understand how conditions like dementia or cognitive impairment affected the client’s mental capacity. While this evidence carries weight, it’s not always the deciding factor in determining testamentary capacity.
- Consideration of Lay Witness Evidence: In many cases, family members, carers, and other persons who observed the testator give testimony about what they saw. These witnesses describe behaviour, understanding, and mental state from their personal observations.
If you want to see how this works in real life, we’re going to walk through a Queensland Supreme Court case that demonstrates these principles.
Case Summary: Re Oliver (deceased) [2016] QSC 264
Case Background:
Steele William Oliver, who suffered from severe schizophrenia, made a will in 2011. His brother, Daniel Frederick Oliver, challenged the will’s validity, arguing that Steele lacked testamentary capacity.
Key Points of the Judgment:
Testamentary Capacity:
The Supreme Court found insufficient evidence to prove Steele had testamentary capacity when he made the will. The solicitor’s notes and the doctor’s forms did not adequately address Steele’s understanding of potential beneficiaries or his reasons for excluding some siblings.
The court noted that proper documentation needs to cover all four elements of the test, not just some of them.
Mental Health Considerations:
Steele’s long-term schizophrenia and his confinement in a psychiatric facility were significant factors. The fluctuating nature of his mental state raised doubts about his capacity at the time of making the will.
Just because someone has lucid moments doesn’t automatically mean they had capacity at the exact moment of signing.
Outcome:
The court declared the will dated 11 October 2011 invalid. The Public Trustee of Queensland was appointed to administer Steele’s estate under intestacy rules. And the applications by both Daniel Oliver and the Public Trustee were dismissed.
Costs:
The court made no order for costs, consistent with probate principles, given the evidentiary issues and the role of the praties.
This case highlights why thorough documentation matters so much when testamentary capacity might be questioned. Without clear evidence from the time of signing, even genuine wills can fail.
So what actually happens when a court decides a will was made without proper capacity?
What Happens If a Will Is Made Without Testamentary Capacity?
If a will is made without testamentary capacity, courts declare it invalid, and it has no legal effect. The document gets treated as though it never existed. And when this happens, courts must distribute the estate in some other way.
Here’s what happens next:
Courts Declare the Will Invalid
The first outcome is that the court sets aside the will due to a lack of testamentary capacity. Judges will declare the document invalid after reviewing all the evidence about the person’s mental state at signing. Courts will then treat the invalid will as though it never existed under succession law.
Ultimately, those involved must work out what happens to the estate without that document. This is where things can get complicated for family members who expected certain inheritances based on the invalid will.
Courts Apply an Earlier Valid Will
What happens if there was an older will made when the testator had capacity? If an earlier valid will exists and the testator properly made it, that document takes effect instead. The Supreme Court grants probate to the most recent valid will in existence, even if it’s years or decades old.
Estate distribution then follows the terms of that earlier will as the testator intended at an earlier time. So, someone might have changed their mind about beneficiaries in the invalid will, but the previous will governs how assets actually get divided.
Intestacy Rules Apply
When no valid will exists at all, intestacy legislation determines who inherits. In Queensland, when no valid will exists anywhere, the Succession Act 1981 governs how assets get distributed among family members.
The Act sets out statutory (government-enacted) rules for distributing estates without wills. Spouses, children, and other relatives inherit according to prescribed legal formulas, not the deceased person’s wishes.
This means the estate might end up divided in ways the testator never wanted, which is why having a valid will with proper capacity is so essential.
Get Professional Advice on Testamentary Capacity
Understanding testamentary capacity helps you protect your will from future challenges and disputes. After years of working with succession matters, we’ve seen how proper capacity assessment at the time of signing prevents costly court battles down the track.
Testamentary capacity is fundamental to valid will-making in Australia. The Banks v Goodfellow test sets the standard that courts apply when determining whether someone had the capacity to make informed decisions about their estate distribution. Courts declare wills invalid when they fail to meet this test, regardless of what the person actually wanted.
Need help with capacity concerns? Securator Legal assists with will preparation, estate planning, and disputes involving capacity questions. Our team understands how to document testamentary capacity properly and can help whether you’re making a will, executing an estate, or challenging a will‘s validity.
Contact our succession law team for guidance on capacity matters or estate issues.
Frequently Asked Questions (FAQs)
We understand testamentary capacity raises a lot of questions. But here are answers that could help clarify things, since these are the most common questions we receive.
Q. Is Testamentary Capacity the Same as Mental Capacity?
In short, no. Testamentary capacity is specific to making wills, while mental capacity covers daily decisions and other legal matters. General mental capacity is a broader concept that applies to various life situations.
Someone might have capacity for everyday life but still lack testamentary capacity for will-making under the Banks v Goodfellow test.
Q. Can a Person With Dementia Have Testamentary Capacity?
Yes, a person with dementia can have testamentary capacity if they understand will-making requirements during lucid moments when they sign the document. It’s because dementia affects people differently, and capacity can fluctuate.
The assessment focuses on whether the will makerhad sufficient capacity at the specific moment of signing, not their general condition.
Q. Who Has the Burden of Proof for Testamentary Capacity in Australia?
There is initially a presumption that a duly executed will is valid. However, once a real doubt about capacity is raised, the burden shifts to the person propounding the will to prove testamentary capacity.
This might include solicitor file notes, medical assessments, or witness testimony.
Q. Is Medical Evidence Required to Prove Testamentary Capacity?
No, medical evidence isn’t legally required to prove testamentary capacity, but it strengthens proof, especially when mental health conditions are involved. Solicitor observations and lay witness evidence can establish capacity without medical reports.
However, when disorders like dementia or cognitive impairment are present, medical opinions become more important for the court’s assessment.
