Contesting a will is an evidence-heavy exercise. The court starts from the presumption that the will is valid, and the person challenging it has to bring the evidence that displaces that presumption. This guide covers the practical evidence you need to run a will dispute in Queensland, organised by the ground you’re relying on.
Why Evidence Matters in a Will Dispute
Wills are usually contested after the will-maker has died, which means the person who could best explain their intentions and state of mind isn’t available. Everything has to be reconstructed from documents, medical records and the accounts of people who were around at the time.
The court won’t set aside a will on suspicion alone. Cases succeed on the strength of the evidence gathered, and cases fail where the evidence is thin. Starting early matters, because records can be lost, memories fade and witnesses become harder to locate as time passes.
Evidence for Lack of Testamentary Capacity
Capacity claims are the most common and the most evidence-intensive. You need to show the will-maker didn’t understand what they were doing when the will was signed.
The core evidence:
- Medical records from around the date the will was signed, including GP notes, specialist reports, hospital records and cognitive assessments such as MMSE or MoCA scores
- Solicitor’s file notes from the will-drafting appointment, including any capacity assessment the solicitor conducted or notes on the will-maker’s presentation
- Expert opinion from a geriatrician, psychiatrist or neurologist who reviews the medical records and gives an opinion on whether the will-maker had capacity at the relevant time
- Witness evidence from family, friends, carers, aged care staff and neighbours who saw the will-maker regularly and can describe their cognition, memory, orientation and decision-making
- Earlier wills to show what the will-maker’s intentions had been when capacity wasn’t in question, and to highlight any unexplained change
Timing is critical. The question isn’t whether the will-maker had capacity generally but whether they had capacity on the day the will was signed. Medical evidence from three months either side of that date carries the most weight.
Evidence for Undue Influence
Undue influence is the hardest ground to prove because the pressure usually happens in private. You’re generally building a circumstantial case from indirect evidence:
- Access and isolation evidence showing who had contact with the will-maker in the period leading up to the new will, and whether other family members had been cut off or restricted
- Vulnerability evidence including medical records, evidence of dependence, cognitive decline or physical frailty
- The circumstances of the new will including who arranged the appointment, who paid for it, who accompanied the will-maker and whether the solicitor was the will-maker’s usual lawyer or someone new
- Departure from earlier wills where the new will suddenly and significantly benefits one person over others without explanation
- Statements the will-maker made to family, friends, GPs or other professionals about their intentions, particularly if they contradict what the new will actually does
- Financial and control evidence showing the alleged influencer had control over the will-maker’s finances, accommodation, medication or contact with others
Emails, text messages, bank records and diary entries often carry more weight than after-the-fact witness statements because they were created at the time.
Evidence for Fraud or Forgery
Fraud and forgery are less common but they do arise. The evidence usually includes:
- Forensic handwriting analysis comparing the signature on the will to known samples of the will-maker’s signature
- Document examination looking at ink, paper, print consistency and any signs of alteration
- Witness evidence from the people named as witnesses to the will, particularly if the signing didn’t happen as the will claims
- Location and timing evidence showing where the will-maker was on the date of signing, which can include medical records, travel records, phone records and CCTV
- Contradictory documents including earlier wills, correspondence and instructions the will-maker gave that don’t match the disputed will
Evidence for Improper Execution
Execution challenges turn on the formal signing requirements. The evidence is usually:
- The will itself and any attachments or alterations
- Witness statements from the two people who witnessed the will, covering whether they were both present when the will-maker signed, whether they signed in the will-maker’s presence and how the signing was arranged
- Solicitor’s file notes where the will was prepared by a solicitor, covering the signing procedure
- Video or contemporaneous records of the signing, which are increasingly common with informal or DIY wills
Where the formal requirements weren’t met but the document reflects the will-maker’s genuine intentions, the court has power to dispense with the requirements under section 18 of the Succession Act 1981. Applications to dispense with the formalities need their own evidence about the will-maker’s intentions.
Evidence Common to All Will Disputes
Regardless of the ground, some evidence is useful across every will dispute:
- Earlier wills and drafts
- The current will and any codicils
- The solicitor’s file for the disputed will
- Medical records for the will-maker, particularly for the two years before the will was signed
- Financial records showing the will-maker’s assets, liabilities and gifts made during their lifetime
- Correspondence between the will-maker and family, friends and advisers
- Aged care, hospital and GP records if the will-maker was in care
How Evidence Is Gathered
Some evidence has to be obtained through court processes:
- Subpoenas to solicitors, doctors, banks and aged care providers for records they hold
- Requests to the executor for the will-drafting file, financial records and estate documents
- Discovery where court proceedings have been filed, requiring both sides to disclose relevant documents
- Witness statements taken by your lawyer from people who knew the will-maker
Your lawyer manages the process. Trying to gather medical or financial records yourself often runs into privacy law obstacles and the material isn’t always admissible if it wasn’t obtained through proper channels.
What Weakens the Evidence in a Will Dispute
Even a well-founded claim can fail on evidence weaknesses. Common problems include:
- Delay in gathering evidence, leading to lost records and unavailable witnesses
- Relying only on family witnesses who have an obvious interest in the outcome
- No expert medical evidence in a capacity claim
- Contradictory statements from the same witness at different times
- Missing the solicitor’s file, which often contains the most useful contemporaneous evidence
Building the evidence strategically from the start of the matter, rather than after proceedings are filed, gives the claim the best chance.
Frequently Asked Questions
How long does it take to gather evidence for a will dispute?
Two to six months for most matters, longer where multiple subpoenas or expert reports are needed. Time limits still apply for family provision claims, so evidence gathering and lodging notice run in parallel.
Can I use my own medical evidence about the will-maker?
Family observations of the will-maker’s cognition are useful and admissible, but they generally aren’t enough on their own for a capacity claim. Expert medical opinion carries more weight.
Do I have to prove my case beyond reasonable doubt?
No. Will disputes are civil matters, decided on the balance of probabilities. You need to show your version is more likely than not.
What if the solicitor’s file has been destroyed?
File destruction is a real issue, particularly for older wills. Some evidence can still be reconstructed from the solicitor’s diary, invoices, letters to the will-maker and any file notes retained on other matters. Acting quickly reduces the risk.
Who pays for the evidence gathering?
The applicant usually funds evidence gathering as the matter runs. For eligible clients, JustFund can cover legal fees and disbursements while the matter is running, with repayment only required once the matter is resolved.
Get Advice on Your Will Dispute
Every will dispute lives or dies on the evidence. Our will dispute lawyers assess what evidence is available, plan how to gather what’s missing, and build the strongest possible case for negotiation, mediation or trial.
Book a consultation to discuss your matter with our estate litigation team.
