Can You Challenge a Will That Was Changed Shortly Before the Will Maker Died?

You discover that your parent changed their will just weeks before they died.

The house now goes to a new partner you barely knew existed. The family business shares are split in a way that makes no sense. A carer you’ve never heard of is suddenly inheriting a significant portion of the estate.

And you’re left wondering: is this even valid?

The short answer: yes, you can challenge a will that was changed shortly before death. But the question isn’t just whether the timing seems suspicious. The question is whether the change was made with proper capacity, free from pressure, and executed correctly. Or, if it was technically valid, whether it fails to make adequate provision for people who were financially dependent on the deceased.

Timing alone doesn’t invalidate a will. But it does invite scrutiny. And if you have genuine concerns, there are clear pathways to test whether the change should stand.

This article explains what the courts look at when a will is altered late in life, who can challenge it, what evidence matters, and what you should do now if you’re facing this situation.

Why Late-Life Will Changes Attract Scrutiny

Changing a will close to death is perfectly lawful. People do it for good reasons: circumstances change, relationships shift, children’s needs evolve, assets grow or shrink.

But when someone rewrites their will in the final weeks or months of life, especially if the changes are significant, courts take a harder look.

Why?

Because the circumstances that often accompany end-of-life decisions, serious illness, dementia, strong medication, dependence on others, isolation from family, can raise questions about whether the person truly understood what they were doing and whether they made the decision freely.

Think about it from the court’s perspective. If someone who has maintained the same will for 20 years suddenly makes a dramatic change whilst in palliative care, or shortly after being diagnosed with advanced dementia, the court wants to be satisfied that the change reflects the person’s genuine intentions. Not someone else’s agenda.

This doesn’t mean the will is automatically invalid. It means the people who benefit from the change may need to satisfy the court that it was properly made. And those who are disadvantaged by it have a genuine basis to ask questions.

Two Different Types of Challenge: Validity Versus Provision

Before you do anything, you need to understand which type of challenge you’re actually bringing. Most people blur these together. Courts don’t.

There are two distinct pathways.

Challenging Validity

This is where you argue the will itself is legally flawed. The document doesn’t reflect the deceased’s true intentions, or it was made in circumstances that undermine its legal effect.

Common grounds for challenging validity include:

• Lack of testamentary capacity: the person didn’t understand what they were doing when they changed the will, usually because of dementia, delirium, medication, or illness
• Undue influence or pressure: someone exerted pressure, coercion, or manipulation that overpowered the person’s free will
• Lack of knowledge and approval: the person signed the will without properly understanding its contents or effect
• Execution defects: the will wasn’t properly signed, witnessed, or executed according to legal requirements
• Fraud or forgery: someone fabricated the document or tricked the person into signing something they didn’t understand

If you succeed on any of these grounds, the entire will (or the problematic amendment) can be set aside. The previous will, if there was one, usually takes effect.

Family Provision Claims

This is a completely different pathway. You’re not arguing the will is invalid. You’re arguing it’s unfair.

Specifically, you’re saying the deceased failed to make adequate provision for you, despite having a legal or moral obligation to do so. These are sometimes called testator’s family maintenance claims.

The will might be perfectly valid, signed with full capacity, no pressure, properly witnessed. But if you were financially dependent on the deceased, or the relationship and circumstances created an expectation of provision, you can ask the court to adjust the distribution.

This is not about what you think you “deserve” in a general sense. It’s about whether the will leaves you in genuine financial need or fails to reflect the reality of your relationship and dependency.

Can you run both challenges at once? Yes. You can argue the will is invalid and, in the alternative, that even if it’s valid, it doesn’t make proper provision for you.

When Timing Becomes a Legal Issue: Capacity and Undue Influence

Let’s be direct: making a will two weeks before you die doesn’t automatically make it suspicious. But if you were seriously ill, cognitively impaired, or heavily reliant on the person who benefits most from the change, timing becomes a very relevant factor.

What Testamentary Capacity Actually Means

To make a valid will, you need to understand four things:

That sounds simple. But when someone is in and out of hospital, on morphine, experiencing episodes of confusion, or diagnosed with dementia, meeting that test becomes difficult.

Courts don’t require perfect clarity or flawless reasoning. They accept that people can have good days and bad days. But they do require that at the moment the will was made, the person had a clear enough mind to grasp what they were doing.

If the change was made during a hospital admission, or shortly after a doctor noted significant cognitive decline, or whilst the person was on heavy medication, you have a legitimate basis to question capacity.

Undue Influence: Pressure That Crosses the Line

Influence is normal. We all influence each other. Family members, partners, friends, and advisers all have a role in shaping decisions.

Undue influence is different. It’s pressure that overpowers someone’s free will to the point where the decision isn’t really theirs.

What does that look like in real life?

• A new partner isolating the person from their children and controlling access to lawyers and financial advisers
• A carer who threatens to withdraw care unless the person changes their will in the carer’s favour
• A child who manipulates a frail, dependent parent by creating fear, guilt, or confusion
• A business associate who positions themselves as the only trusted adviser whilst the person is vulnerable and isolated

Undue influence is hard to prove because it often happens behind closed doors. But courts know what to look for: isolation, dependence, sudden changes in behaviour, and a pattern of control around the will-making process.

If the only people present when the will was changed were the ones who benefit most from it, and the person was physically or emotionally dependent on them, that’s a red flag.

Who Can Challenge a Last-Minute Will and How Quickly You Must Act

Not everyone has standing to challenge a will. And even if you do, the law won’t wait for you to get around to it.

Who Can Bring a Challenge

For validity challenges, the general rule is that anyone with a financial interest in the estate can seek to stop probate or challenge the will’s validity. That typically includes:

• Beneficiaries under a previous will
• People named in the current will who received less than expected
• People who would inherit if there was no valid will (the statutory next of kin)

For family provision claims, eligibility is more specific and varies slightly by state. Generally, the following people can apply:

• Spouses and de facto partners
• Children (including adult children)
• Former spouses in some circumstances
• Stepchildren who were maintained by the deceased
• Dependants (people who relied on the deceased for financial support)
• In some cases, grandchildren or people in a close personal relationship with the deceased

If you’re not in one of these categories, you likely can’t bring a claim. But if you are, don’t assume you automatically have a strong case. Eligibility is just the threshold. You still need grounds.

Time Limits: Why You Can’t Wait

Here’s where most people get caught out: time limits are strict.

For family provision claims, most Australian states require you to file within 6 to 12 months from the date of death or the grant of probate. Some states give you a bit longer, some a bit less. Courts can extend the time in exceptional circumstances, but you can’t rely on that.

For validity challenges, the time pressure is different but just as real. If you want to prevent probate being granted, you need to act before the executor applies for the grant or lodge a caveat to pause the process. Once probate is granted and assets are distributed, your options narrow significantly.

If you wait until the estate has been wound up and distributed, you may have no practical remedy even if you’re right on the merits.

What Evidence Matters with a Deathbed or Late-Life Change

You can’t challenge a will based on suspicion alone. You need evidence. And the earlier you start preserving it, the better.

Courts want to see proof, not allegations.

Medical Records and Capacity Assessments

If capacity is in question, medical records are the most important evidence. GP notes, hospital admission records, aged care assessments, specialist reports, anything that documents the person’s cognitive state around the time the will was changed.

Look for entries that mention confusion, memory loss, disorientation, difficulty understanding instructions, or fluctuating capacity. If the person was assessed as lacking capacity for other decisions (financial, medical), that’s highly relevant.

If a doctor or geriatrician noted dementia, delirium, or significant cognitive impairment shortly before the will was changed, that evidence can be decisive.

Lawyer File Notes and Witnesses

The solicitor who drafted the will should have kept detailed file notes. Those notes should record:

• How the instructions were given
• Whether the person seemed to understand what they were doing
• Whether anyone else was present or exerting influence
• Any concerns the lawyer had about capacity or pressure

If the lawyer took no capacity notes, or if the instructions were given by someone other than the deceased, that’s a problem.

The witnesses who saw the will signed are also critical. Were they independent? Were they beneficiaries? Did they have any reason to doubt the person’s understanding?

If the only witnesses were family members who benefit from the will, or employees of the main beneficiary, courts take that seriously.

Communications Around the Change

Emails, text messages, social media posts, letters, anything that shows what was happening around the time of the will change can be relevant.

Did the person talk about feeling pressured? Did they express confusion or regret? Did someone else control their communications?

Even informal messages, like a text from a sibling saying “Dad seemed really out of it when I visited yesterday”, can corroborate other evidence about capacity or influence.

For business owners, company records matter too. If the will change coincides with sudden changes to directorships, shareholdings, or control of family trusts, that can support an argument about influence or lack of understanding.

Patterns of Behaviour and Relationship History

Courts don’t look at the will in isolation. They consider the person’s life, relationships, and prior intentions.

If someone maintained a will for 25 years that treated all children equally, then suddenly changed it to favour one child whilst excluding the others, without an obvious reason like estrangement or dependency, the court will want to understand why.

Evidence of the person’s values, past statements about inheritance, and the quality of relationships can all support or undermine a challenge.

The Process in Practice: From Raising Concerns to Resolution

So you have concerns about a late-life will change. What actually happens next?

Notify the Executor and Pause Distributions

Your first step is to put the executor on notice. Write to them, clearly and formally, setting out your concerns and asking them not to distribute the estate until the issues are resolved.

Executors have a duty to distribute the estate, but they also have a duty not to distribute if there’s a genuine dispute. If you’ve raised a credible challenge and they ignore it, they can be personally liable if they distribute assets and you later succeed.

You don’t need to threaten litigation in the first letter. But you do need to be clear and specific. Vague complaints about “unfairness” won’t stop an executor. Evidence-based concerns about capacity, influence, or procedural defects will.

Caveat or Challenge to Probate

If the executor applies for probate and you believe the will is invalid, you can lodge a caveat. That’s a formal notice to the court that stops probate being granted until your objection is heard.

Once a caveat is lodged, the executor has to either negotiate with you or bring the dispute to court for determination.

If probate has already been granted, you can apply to revoke it. But that’s harder. Acting early, before the grant, gives you more leverage.

Family Provision Claims: A Separate Proceeding

If your challenge is about inadequate provision rather than invalidity, you’ll file a family provision claim. This is a separate court application asking for a larger share of the estate or specific assets.

The court will consider:

• Your relationship with the deceased
• Your financial position and needs
• The size of the estate
• Competing claims from other beneficiaries
• Any reasons the deceased might have had for limiting your provision

These claims don’t attack the will’s validity. They ask the court to adjust the outcome.

Mediation: Where Most Cases Resolve

Most will disputes never reach a final hearing. They settle.

Courts actively encourage mediation in estate matters. Mediation allows families to negotiate a practical outcome without the cost, delay, and emotional toll of a trial.

If your case has genuine merit, evidence of capacity issues, clear signs of influence, or a strong family provision claim, mediation often results in a negotiated distribution that’s more balanced than the disputed will.

If the other side refuses to mediate or makes unreasonable offers, that can strengthen your position if the matter does go to trial. Courts take a dim view of parties who refuse genuine attempts to resolve.

For Business Owners: Protecting Your Estate from Late-Life Disputes

If you’re reading this as someone who owns a business, holds significant assets, or is thinking about making a late-life change to your own will, you need to understand the other side of this equation.

How do you structure a will change so it’s less vulnerable to challenge?

Document Your Reasons Clearly

If you’re making a significant change, especially one that disadvantages people who would normally expect provision, put your reasons in writing.

A letter of wishes, a statutory declaration, or even a detailed file note with your solicitor can explain:

• Why you’re making the change
• What circumstances have shifted
• Why certain people are receiving more or less
• That you understand the effect of the change and have considered the impact on others

This doesn’t guarantee the change won’t be challenged. But it makes it much harder for someone to argue you didn’t understand what you were doing or that you were pressured.

Use an Independent Solicitor and, If Necessary, a Capacity Assessment

If you’re elderly, unwell, or there’s any risk someone might later question your capacity, use an independent solicitor. Not a solicitor recommended by the person who benefits from the change. Not a solicitor who also acts for your new partner or carer.

An independent lawyer will take detailed file notes about your instructions, your understanding, and whether you seemed to be acting freely.

In high-risk situations, significant cognitive decline, major changes to a long-standing will, potential for family conflict, consider getting a formal capacity assessment from a doctor or psychologist at the time you give instructions for the change. That contemporaneous evidence is extremely hard to challenge later.

Align Will Changes with Company, Trust, and Superannuation Structures

If you own a family business, be aware that your will is just one part of the succession puzzle.

Shareholder agreements, buy-sell arrangements, trust deeds, and superannuation death benefit nominations can all override or complicate what your will says.

If you change your will to transfer business assets or control to one child, make sure that aligns with:

• Who holds shares and what rights attach to them
• Whether there’s a binding buy-sell agreement
• How the family trust is structured and who controls the appointor role
• Your superannuation nominations (which often don’t follow your will)

A will change that conflicts with these structures can create chaos and litigation. Your executor might not have the power to do what your will directs. Or the beneficiaries might fight over control of the business because the documents contradict each other.

Get commercial advice, not just estate planning advice, if business assets are involved.

When to Seek Specialist Advice

Not every late-life will change warrants a legal challenge. But if any of these red flags apply, you should talk to a litigation specialist who focuses on estate disputes:

• The will was changed within weeks or months of death, and the person was seriously ill, in aged care, or diagnosed with dementia
• A new partner, carer, or relative who wasn’t previously close is the main beneficiary
• The change drastically alters a long-standing will without obvious explanation
• You were financially dependent on the deceased and the new will leaves you with little or nothing
• The deceased was isolated from family in the period leading up to the change
• The lawyer who drafted the will has ties to the main beneficiary
• Medical records or witness accounts suggest the person was confused, medicated, or under pressure
• You’ve been denied access to the will, probate documents, or information about the estate

Any one of these on its own might not be enough. But if several apply, you have a legitimate basis to ask questions.

What Happens If You Wait Too Long

The biggest mistake people make is waiting. They assume the executor will “do the right thing”. Or they hope the family will sort it out informally. Or they don’t want to seem greedy or disrespectful.

Then 12 months pass. Probate has been granted. The house has been sold. The shares have been transferred. The estate has been distributed.

At that point, even if you were right about capacity or influence, your practical options are extremely limited. You can’t claw back assets that are gone. You might still have a claim against the executor personally, but that’s harder, slower, and more expensive.

The system gives you a narrow window. If you miss it, you lose.

What Specialist Advice Actually Looks Like

A good estate disputes lawyer won’t just file proceedings and hope for the best. They’ll:

• Review the evidence you have and identify what’s missing
• Assess the strength of your challenge realistically (capacity, influence, family provision, or some combination)
• Advise on the likely cost, time frame, and prospects
• Engage with the executor and other beneficiaries before rushing to court
• Explore mediation and settlement options early
• Manage the process so you’re not just reacting to the other side’s moves

You should walk out of the first meeting with clarity on: whether you have a case, what pathway makes sense, what it will cost, and what happens next.

If you’re being told “we’ll fight this all the way” without any discussion of risk, cost, or alternatives, find a different lawyer.

What This Means for You

A will changed shortly before death can be valid, invalid, or something in between. The law doesn’t presume the answer. It provides a process to test it.

If you’re facing this situation as a disappointed beneficiary, you have options. But only if you act quickly, gather evidence properly, and engage with the process strategically.

If you’re a business owner or someone considering a late-life change to your own will, you can reduce the risk of future challenges significantly by structuring the process carefully and documenting your intentions clearly.

Litigation is never pleasant. But in the right circumstances, it’s the only way to protect what’s fair, honour the deceased’s true intentions, or ensure that people who were genuinely dependent aren’t left without provision.

The system is designed for exactly this kind of dispute. Use it properly.

Disclaimer:

This article provides general information only and does not constitute legal advice. Estate disputes involve complex factual and legal questions that vary by jurisdiction and circumstance. If you’re considering challenging a will or defending a challenge, seek tailored advice from a lawyer who specialises in estate litigation. Time limits apply and missing them can be fatal to your case. Aptum Legal acts exclusively in commercial and tax disputes and does not provide general estate planning advice.