You open a filing cabinet after your mother's funeral and find two wills. One from 2016. One from 2023. Different beneficiaries. Different instructions for the family business.
Your siblings are already arguing about which one "really" reflects what mum wanted.
And you're the executor, caught in the middle, with no idea what you're legally obliged to do.
This is the reality for more families than you'd think. Litigation doesn't always start with malicious intent. Sometimes it starts with a drawer, two documents, and nobody quite sure what happens next.
Key Takeaways
- The general rule: A later valid will revokes earlier wills, but "later" doesn't automatically mean "valid" – the new will can still be challenged on grounds like capacity or undue influence
- Multiple wills can coexist: If you have assets in different countries, separate wills for each jurisdiction can operate simultaneously, provided they're drafted not to revoke each other
- Validity vs provision: Disputes over which will applies (validity) are different from claims that the will doesn't provide enough for family members (family provision claims)
- Executors must act carefully: If there's disagreement about which will governs, don't distribute assets or make deals – pause, gather evidence, and seek advice before anyone files court papers
- Evidence matters most: Courts focus on medical records, lawyer file notes, witnesses, and the circumstances around signing – not informal conversations or family expectations
- Business assets are vulnerable: While the estate is in dispute, company shareholdings, trust interests, and partnership rights can be frozen, creating operational risk
When Two Wills Surface: What This Actually Means
Most people assume there's one will, filed neatly somewhere, waiting to be found when the time comes.
But estates don't always work that way.
You might discover a signed will in the deceased's home office. Then a different signed will turns up in the lawyer's file. Or a later will is found in a safe deposit box nobody knew existed.
Sometimes the later will is genuine but contested. Sometimes it was drafted under pressure. Sometimes it was never properly executed. Sometimes both wills are perfectly valid, dealing with different assets in different countries.
The question isn't academic. Which will governs determines who inherits, who controls the business, who gets the family home.
And when family members disagree about the answer, the estate can't move forward until the issue is resolved.
This isn't just a problem for blended families or wealthy dynasties. It happens in ordinary estates where someone made a new will after a relationship breakdown, or updated their wishes when circumstances changed, or tried to plan for assets overseas without proper advice.
If you're the executor, director of a family company, or adviser to the estate, you need to understand how courts decide between competing wills. More importantly, you need to know what to do right now, before the situation escalates.
The existence of multiple wills doesn't automatically create a dispute. The dispute starts when family members can't agree which document should be admitted to probate, and that's when the estate freezes.
Which Will Usually Counts: The Starting Point
Australian law starts with a straightforward principle: if you make a new valid will, it revokes your earlier wills.
Most wills include an express revocation clause right at the beginning. Something like: "I revoke all former wills and testamentary dispositions."
That clause does exactly what it says. It cancels everything that came before.
But even without an express revocation clause, the law can still treat the later will as revoking the earlier one. This is called implied revocation. If the later will deals with your entire estate and is inconsistent with the earlier will, the later one wins.
Think of it like this: you can't have two sets of instructions for the same assets. If your 2024 will says "my house goes to my daughter" and your 2020 will said "my house goes to my son", the later instruction overrides the earlier one.
So the general rule is clear: later valid will trumps earlier will.
But notice the two words doing all the work: "valid will".
The later document only governs if it meets the legal requirements for a valid will. Signed properly. Witnessed correctly. Made by someone with the mental capacity to understand what they were doing. Made freely, without undue pressure or influence.
If the later will fails any of those tests, it's not valid. And if it's not valid, you revert to the last valid will before it.
That might be the earlier will from 2020, or 2015, or whenever the deceased last made a will that does meet the legal requirements.
This is why disputes over "which will counts" aren't usually disputes about dates. They're disputes about validity.
If you've found a later will but something feels wrong about the circumstances – sudden changes in beneficiaries, the deceased was unwell or dependent on one family member, no lawyer involvement – don't assume the later date settles the question. Get advice before you act.
When the Later Will Is Challenged: Capacity, Pressure, and Suspicious Circumstances
Courts don't automatically prefer the most recent document. They prefer the most recent valid document.
Challenging the validity of a will usually comes down to three main grounds.
Lack of testamentary capacity: Did the person making the will understand what they were doing? Did they know the nature and extent of their assets? Did they comprehend the effect of the will, including who they were benefiting and who they were excluding?
If someone makes a new will while suffering from dementia, severe illness, or medication that affects cognition, the later will can be set aside. Medical records, GP notes, and specialist reports become critical evidence.
Undue influence: Was the person making the will acting freely, or were they pressured, manipulated, or coerced by someone else? Undue influence is more than just persuasion or advice. It's domination. It's overriding the will-maker's own intentions and substituting someone else's.
Common scenarios: an adult child who has isolated the parent from other family members, controlled their finances, and orchestrated a new will in their favour. Or a second spouse who moved quickly after marriage to change a will that previously benefited the deceased's children from an earlier relationship.
Proving undue influence is difficult. You need evidence of the relationship dynamics, dependency, and the circumstances around the signing of the will.
Failure to comply with formal requirements: Every Australian state has legislation setting out how a will must be executed. Usually: signed by the will-maker, signed by two witnesses who are present at the same time, witnesses who aren't beneficiaries.
If the later will wasn't properly witnessed, or was signed in circumstances that don't meet the statutory requirements, it can be invalid even if the deceased genuinely intended it to be their will. Courts have limited power to admit informal wills, and the threshold is high.
When a later will is challenged on any of these grounds, the executor can't just proceed with it. The validity question has to be determined, usually by the court, before probate can be granted.
If the later will is found invalid, the estate reverts to the last valid will. That might be a will from many years earlier, with beneficiaries the deceased may not have intended to benefit. But if it's the last document that meets the legal requirements, it's the document that governs.
Validity challenges aren't about whether the will is "fair" or whether someone got "enough". They're about whether the document is legally effective. If the later will is knocked out, the earlier will applies – even if that feels unjust to some family members.
Multiple Wills That Can Coexist: Different Countries, Different Asset Pools
Not every case of "two wills" is a problem.
Sometimes people deliberately maintain more than one valid will at the same time, each dealing with a separate pool of assets.
The most common scenario: you have assets in Australia and assets in another country.
Australian succession law governs assets located in Australia. If you own property or shares or bank accounts overseas, those assets are governed by the law of that jurisdiction. Dealing with an estate that spans multiple countries can mean navigating multiple probate processes.
To simplify this, some people make separate wills: one Australian will dealing with all assets in Australia, and one foreign will (say, a UK will) dealing with assets in the UK.
Provided each will is carefully drafted to limit its scope and not revoke the other, both wills can operate simultaneously.
For example, the Australian will might say: "This will applies only to my assets in Australia and does not revoke any will I have made in relation to assets outside Australia."
The UK will includes equivalent wording confining itself to UK assets.
Done properly, this avoids having to re-seal an Australian grant of probate in the UK or vice versa. Each will is admitted to probate in its own jurisdiction, and the estate is administered under the relevant local law.
But this requires precise drafting. If the Australian will includes a standard revocation clause that says "I revoke all former wills", it revokes the UK will, even if that wasn't the intention. You're back to one will trying to govern assets in multiple jurisdictions, which creates cost and complexity.
The same principle applies if you want separate wills for different asset types within Australia, though this is less common. For instance, a will dealing only with your interest in a family trust or business, separate from a will dealing with personal assets. Again, the drafting must make clear that each will is limited and doesn't revoke the other.
If the wording isn't clear, or if the later will doesn't acknowledge the earlier one, you end up with uncertainty about whether the later will was intended to replace everything or just govern specific assets.
That's when disputes start, because different family members will interpret the documents in ways that suit their interests.
If you discover the deceased had multiple wills, don't assume they're competing. Look at the scope of each will. If each is expressly limited to certain assets or jurisdictions, they may all be valid. But if there's any ambiguity or overlap, get advice before applying for probate under either document.
Validity Disputes vs Family Provision Claims: Two Different Problems
Here's where confusion creeps in, even for advisers who don't specialise in estate disputes.
A validity dispute and a family provision claim are separate things. They often run together. They create overlapping pressure on executors. But they're not the same problem.
Validity dispute: Which document is the will? Is the later will valid, or do we revert to an earlier will? This is about the legal effectiveness of the document itself. Grounds: lack of capacity, undue influence, failure to execute properly.
Family provision claim: Assuming we know which will governs, does that will make adequate provision for certain eligible people? This is about the fairness or adequacy of what the will gives (or doesn't give) to spouses, children, dependants. Grounds: the will-maker failed to make proper provision for someone who had a claim on the estate.
Different questions. Different legislation. Different time limits. Different remedies.
Let's say a later will cuts out one of the deceased's adult children and leaves everything to another child. The cut-out child has two potential pathways:
Challenge the validity of the later will (arguing lack of capacity or undue influence). If successful, the earlier will – which may have included them – is admitted to probate instead.
Accept that the later will is valid, but bring a family provision claim arguing that the will doesn't make adequate provision for them as a child of the deceased.
Sometimes a claimant runs both: challenge validity first, and if that fails, bring a provision claim. Sometimes they choose one pathway because the other doesn't suit the evidence.
For executors and business owners, the distinction matters because each problem creates different risk, different timing, and different settlement dynamics.
Validity disputes are binary: either the will is valid or it's not. If a later will is set aside, you administer the earlier will. There's no middle ground where the court "adjusts" the later will to make it fairer.
Family provision claims are discretionary: the court considers the size of the estate, the claimant's financial position, their relationship with the deceased, any competing claims, and decides what provision (if any) should be made. The outcome is a monetary award or a property transfer, not a different will.
Understanding which problem you're dealing with helps you assess risk and make decisions about whether to settle, defend, or seek directions from the court.
You can have both problems at once. A family member challenges the validity of the later will and also foreshadows a provision claim "just in case" the later will is upheld. That's why early advice is critical – you need to understand all the pathways before you take a position.
If You're the Executor: What to Do Right Now
You're the executor named in one of the wills (or maybe both). Family members are disagreeing about which will applies. What do you actually do?
First: pause. Don't distribute assets. Don't transfer property. Don't pay out beneficiaries. Don't make informal deals where you agree to "split the difference" or "keep the peace".
Once you distribute assets or property, getting them back is difficult and expensive. If you distribute under a later will that is subsequently found invalid, you may be personally liable for the loss to the estate.
Your duty as executor is to administer the estate according to the valid will. Until you know which will that is, you can't safely act.
Second: secure all the wills and estate planning documents. Get copies of every version you can find. Check with the deceased's lawyers, accountants, and financial advisers. Look for file notes, drafts, and correspondence that might explain the deceased's intentions or the circumstances around each will.
Third: gather evidence about the circumstances in which each will was made. If the later will is being challenged, you'll need medical records, GP notes, any specialist reports about the deceased's capacity. You'll need witness statements from people present when the will was signed. You'll need the lawyer's file if the will was professionally prepared.
If the later will was homemade or witnessed by family members, that's a red flag for potential validity issues.
Fourth: notify all interested parties. That means beneficiaries under both wills, and anyone who might have been expecting to inherit or who has a potential family provision claim.
You don't have to take sides. You don't have to decide which will is valid. But you do need to be transparent about the situation and give people the information they need to make their own decisions about whether to challenge or defend.
Fifth: consider seeking directions from the court. If there's genuine uncertainty about which will should be admitted to probate, the court can resolve the question. As executor, you can apply for directions in a neutral capacity, presenting both wills and asking the court to determine which should be probated.
This isn't the same as defending one will against the other. You're not taking a position. You're asking the court to clarify your duties. The cost of the application usually comes out of the estate, not your own pocket.
Alternatively, if one party is clearly challenging the later will, they'll bring the proceedings, and you may be named as a defendant in your capacity as executor. Your role in that scenario is usually to act neutrally, provide the evidence the court needs, and abide by the court's decision.
Sixth: don't act on informal family pressure. You'll be told "this is what mum really wanted" or "dad said he was going to change it back" or "everyone knows the later will was a mistake". None of that matters unless it translates into admissible evidence about capacity, intention, or undue influence.
Your obligation is to the law, not to family expectations.
Seventh: if you're also a beneficiary or a party with a financial interest in the outcome, consider whether you should continue as executor. You can renounce the role. An independent executor or a professional trustee company can step in, removing the conflict and reducing the risk of accusations that you're favouring one side.
Managing the business while all this unfolds is a separate challenge. If the deceased owned shares in a family company, those shares are now an asset of the estate. Until probate is granted, you can't transfer them or vote them. That can create a deadlock in company decisions.
If the business needs continuity, talk to the other directors and shareholders about interim arrangements. You might need a shareholders' agreement that contemplates this scenario, or court orders allowing certain decisions to be made while the estate is unresolved.
The worst outcome is operational paralysis because nobody can act while the family argues about the will.
If you're the executor and beneficiaries are pressuring you to "just apply for probate under the later will", don't move until you've assessed the validity risk. If someone challenges after probate is granted, the court can revoke the grant, and you'll be back at square one – except you'll have incurred costs and potentially exposed yourself to liability.
How These Disputes Are Resolved: The Pathway from Disagreement to Decision
Not every case where two wills exist ends in court.
Many disputes settle. Someone challenges the later will, evidence is exchanged, and the parties reach a compromise. Maybe the estate is divided differently from either will. Maybe one side accepts the validity of the later will but negotiates a family provision payment. Maybe the later will is withdrawn from probate and the earlier will is admitted by consent.
Settlement is common because litigation is expensive, slow, and uncertain. Contesting a will on validity grounds means affidavits, medical expert reports, cross-examination, and a final hearing. Costs can easily exceed six figures for a moderately complex dispute.
Even if you win, costs orders don't always cover your full legal bill. And if you lose, you may be ordered to pay the other side's costs as well as your own.
So most disputes follow a familiar arc: challenge, evidence gathering, negotiation, and either settlement or trial.
Step one: the challenge Someone (usually a beneficiary under an earlier will, or a person who would inherit on intestacy if all wills are invalid) files a caveat to prevent probate being granted. Or they file a summons seeking a declaration that the later will is invalid.
The executor and other interested parties are served. The dispute is now formal.
Step two: evidence Both sides file affidavits. The party challenging the will sets out the grounds: medical evidence about lack of capacity, witness statements about undue influence, procedural defects in execution.
The party defending the will (often the executor or the main beneficiary under the later will) responds with their own evidence: medical reports showing capacity, lawyer file notes showing proper instructions, witness statements from those present at signing.
If capacity is in dispute, the court may order an independent medical expert to review the evidence and provide an opinion.
Step three: mediation Most courts now require mediation before a final hearing. The parties, their lawyers, and a mediator sit down and explore settlement options.
Mediation can be confronting, especially in family disputes where emotions are high. But it's often the point where reality sets in. Each side sees the strength of the other's evidence and the cost of continuing. Many cases settle at mediation.
Step four: trial or settlement If mediation fails, the matter proceeds to trial. The court hears evidence, cross-examines witnesses, considers expert reports, and makes findings about capacity, undue influence, or procedural compliance.
The judge then decides which will (if any) should be admitted to probate.
If the later will is upheld, it governs the estate. If it's set aside, the earlier will is probated. If both wills are found invalid, the estate is distributed under intestacy rules.
The timeline for all of this varies. A straightforward validity dispute might resolve within 12 to 18 months. A complex dispute involving multiple expert reports, contested facts, and overlapping family provision claims can take two to three years.
During that time, the estate is frozen. Beneficiaries don't receive distributions. Business assets can't be transferred or sold. Trust restructures are on hold. Family relationships fracture further.
This is why early advice and early settlement discussions matter. The longer the dispute runs, the more wealth is consumed by legal costs and the more damage is done to the family and the business.
Litigation is not the first step. It's the last step, when every other pathway has failed. Even after proceedings are filed, settlement remains possible – and often preferable – right up until judgment.
When to Get Specialist Help and What to Expect
Estate disputes sit at the intersection of succession law, family dynamics, and often tax and commercial structures. They're not matters you hand to a generalist.
If you're facing a dispute over which will applies, you need a lawyer who litigates these cases. Not someone who drafts wills. Not someone who does a bit of probate on the side. Someone whose practice is contested estates, every day.
Here's what a litigation specialist does in a two-wills dispute:
Assess the strength of each side's case. That means reviewing the medical evidence, the circumstances around each will, the witnesses, the lawyer file notes, and any relevant communications. You get a clear view of whether a validity challenge is likely to succeed, or whether the later will is defensible.
Identify the real risks. Is this purely a validity dispute, or is there also a family provision claim? Are there business assets that create urgency? Is there a risk of asset dissipation if one party acts prematurely? What's the cost-risk profile if this goes to trial?
Manage the process strategically. That includes deciding whether to file proceedings or respond to a challenge, what evidence to gather, how to frame the issues, and when to explore settlement. It also means keeping the executor informed and protected, so they're not personally exposed.
Negotiate settlements that actually work. A settlement in a two-wills dispute isn't just about who gets what. It's about finality. It's about tax consequences. It's about whether business structures need to be adjusted. A poorly drafted settlement can create new disputes or trigger unintended tax liabilities. You need someone who understands the estate, the family, and the commercial realities.
Run the litigation if settlement fails. That means drafting affidavits, briefing experts, preparing witnesses, cross-examining the other side's witnesses, and presenting the case at trial. Contested estate litigation is adversarial. The other side will attack the credibility of your evidence and your witnesses. You need a lawyer who is comfortable in that environment and who knows how judges approach these cases.
What should you expect in terms of cost and timing?
Cost depends on complexity, the amount in dispute, and how contested the case is. A relatively straightforward validity dispute where both sides are reasonable might cost $50,000 to $100,000 per side to get to a mediated settlement. A hard-fought dispute with multiple experts and a final hearing can exceed $200,000 to $300,000 per side.
Timing, as noted above, is usually 12 to 24 months for a dispute that settles, longer if it goes to trial.
The question you should ask yourself: what's at stake? If the estate is worth $2 million and the difference between the two wills is $800,000 to one beneficiary, spending $100,000 to resolve the dispute may be justifiable. If the estate is worth $400,000 and legal costs will consume half of it, settlement at almost any price becomes the rational choice.
A good litigation lawyer will give you that analysis upfront, not halfway through the case when costs are already sunk.
Don't wait until proceedings are filed to get advice. The earlier you engage a specialist, the more options you have to manage risk, contain cost, and avoid mistakes that weaken your position later. Executors, in particular, should seek advice as soon as they become aware of a potential dispute – waiting until a caveat is lodged or a summons is served limits your choices.
What You Should Do Next
If you've found two wills, or you're the executor dealing with family disagreement, or you're a beneficiary under one will who's been cut out of the other, the pathway forward is the same.
Pause. Gather the documents. Understand the difference between validity disputes and provision claims. Assess the evidence dispassionately, not based on what you think "should" happen or what the deceased "would have wanted".
Then get specialist advice before you act, before you make promises, and before you distribute anything.
Disputes over which will applies are evidence-driven and process-heavy. The right lawyer won't just handle the case. They'll give you clarity about your options, the risks, and the likely outcomes. They'll help you make decisions that protect the estate and, if possible, preserve what's left of the family relationship.
Litigation is complex. But the pathway through it shouldn't feel like wandering through fog.
Disclaimer: This article provides general information about disputes involving multiple wills and is not legal advice. Estate and succession law varies by jurisdiction, and every case depends on its specific facts and evidence. If you are dealing with a dispute over competing wills, seek advice from a lawyer who specialises in contested estates and succession litigation.
