Probate disputes are legal disagreements that arise over a deceased person’s estate, covering everything from challenges to a will’s validity through to conflicts about how an executor has managed assets. If you are a beneficiary, executor, or family member caught up in an estate conflict, understanding the specific type of dispute you face is the first step toward resolving it. Contentious probate covers a broad range of legal issues including will validity, executor conduct, and estate administration. Each category carries its own legal grounds, time limits, and remedies.
1. What are the main types of probate disputes?
The main types of probate disputes include will validity challenges, family provision claims, executor and trustee conduct disputes, trust-related disagreements, estate administration conflicts, and intestacy or heirship disputes. Each type arises from a distinct legal problem. Knowing which category applies to your situation determines which court process you follow, which deadlines apply, and what evidence you need to gather.

2. Will validity disputes
Will validity disputes are challenges to whether a will is legally binding in the first place. They are the most frequently litigated category of probate conflict in Australia. Grounds for challenging a will include lack of testamentary capacity, undue influence, improper execution, forgery, and suspicious circumstances.
Each ground requires specific proof:
- Lack of testamentary capacity: The deceased did not understand the nature of making a will, the extent of their estate, or the claims of people who might expect to benefit.
- Undue influence: A person pressured or coerced the deceased into making or changing a will against their true wishes.
- Improper execution: The will was not signed or witnessed in accordance with the requirements of the Succession Act 2006 (NSW) or equivalent state legislation.
- Forgery or fraud: The document itself, or the deceased’s signature, was fabricated or obtained by deception.
- Suspicious circumstances: The will was prepared in circumstances that raise doubt about whether it reflects the deceased’s genuine intentions.
Courts require more than dissatisfaction to overturn a will. Specific legal grounds such as lack of capacity or undue influence must be established with evidence. A family member who simply dislikes the outcome of a will cannot succeed on that basis alone.
Pro Tip: If you suspect a will was made under pressure or when the deceased lacked mental capacity, gather medical records, correspondence, and witness statements as early as possible. Evidence degrades quickly after a death.
For a detailed breakdown of each ground, Simons George Legal has published a thorough guide on contesting a will in NSW.
3. How do family provision claims work?
Family provision claims are a distinct category of probate dispute. They do not attack the validity of a will. Instead, they ask a court to order that a larger share of the estate be paid to a person who was left out or inadequately provided for. Eligible claimants include spouses, de facto partners, children, and dependants who relied on the deceased for financial support.
The court considers several factors when assessing a claim:
- The claimant’s current financial position and future needs
- The nature and length of the relationship with the deceased
- Any contributions the claimant made to the estate or to the deceased’s welfare
- The size of the estate and the competing needs of other beneficiaries
- Any reasons the deceased gave for excluding or limiting the claimant’s share
Confusing a family provision claim with a will contest is a common and costly mistake. The two are separate legal routes with different time limits and different outcomes. A family provision claim can succeed even when the will is perfectly valid. Simons George Legal handles both types and can advise which route applies to your circumstances. You can read more about family provision claims on the firm’s website.
4. What are executor and trustee disputes?
Executor and trustee disputes arise when a person responsible for administering an estate or managing a trust fails to carry out their duties properly. Executor misconduct commonly includes withholding information from beneficiaries, mismanaging or selling assets at undervalue, showing favouritism to certain beneficiaries, and causing unreasonable delays in distributing the estate.
Common complaints in executor and trustee disputes fall into four categories:
- Breach of fiduciary duty: The executor or trustee acts in their own interest rather than in the interest of the estate and its beneficiaries.
- Lack of transparency: Beneficiaries are not provided with accounts, updates, or access to information they are legally entitled to receive.
- Asset mismanagement: Estate property is allowed to deteriorate, sold at a loss, or invested inappropriately.
- Unreasonable delay: The estate is not wound up within a reasonable time, causing financial loss or prolonged uncertainty for beneficiaries.
Courts can supervise or remove an executor who is not performing their role. Clear documentation of timelines and financial accounts greatly influences how these disputes are resolved. Beneficiaries who suspect misconduct should request a formal accounting before commencing litigation.
Pro Tip: As a beneficiary, you have a legal right to request estate accounts from the executor. If they refuse or delay, that refusal itself becomes relevant evidence in any subsequent court proceedings.
5. In what ways do trust disputes arise in probate litigation?
Trust disputes within probate arise when a deceased person’s estate includes a testamentary trust or when a family trust is connected to the estate. Trust disputes typically involve challenges to the trust’s validity, disagreements about how trust terms should be interpreted, and conflicts over whether the trustee is acting within their authority.
Common causes of trust disputes include:
- Ambiguous trust terms: The trust deed uses language that different parties interpret differently, leading to disagreement about distributions or investment decisions.
- Trustee authority: A trustee takes an action that beneficiaries argue falls outside the powers granted by the trust instrument.
- Breach of trust: The trustee fails to act in the best interests of all beneficiaries, or makes decisions that benefit one group at the expense of another.
- Trust validity: A party argues the trust itself was not properly established or was created under circumstances that make it void.
| Trust dispute type | Core legal question |
|---|---|
| Validity challenge | Was the trust properly created and executed? |
| Interpretation dispute | What do the trust terms actually require? |
| Trustee conduct | Did the trustee act within their authority? |
| Breach of trust | Did the trustee act in the beneficiaries’ best interests? |
Trust disputes hinge on the interpretation of trust instruments and whether trustees act within their authority, which affects both the jurisdiction and the remedies available to beneficiaries.
6. What are common estate administration disputes?
Estate administration disputes arise from the way an estate is managed after death, separate from any question about the will’s validity or the executor’s personal conduct. Prolonged estate administration can trigger disputes and challenge fiduciary responsibilities when beneficiaries are left waiting without explanation or progress.
Typical causes of estate administration disputes include:
- Failure to apply for probate within a reasonable time after the death
- Inadequate communication with beneficiaries about the progress of the estate
- Disputes about which debts should be paid from the estate and in what order
- Disagreements about the sale or transfer of specific estate assets
- Failure to locate or notify all beneficiaries entitled to a share
The practical impact on beneficiaries can be significant. A beneficiary waiting on an inheritance to fund housing, care, or business needs suffers real financial harm from unnecessary delays. When administration disputes escalate, beneficiaries can apply to the Supreme Court for orders compelling the executor to act, provide accounts, or pass their administration to another person. You can review the estate administration checklist that Simons George Legal has prepared for executors to understand what proper administration looks like.
7. How do intestacy and heirship disputes arise?
Intestacy disputes occur when a person dies without a valid will, or when a will is successfully challenged and set aside, leaving the estate to be distributed under the rules of intestacy. Disagreements over rightful heirs are common in intestacy situations, particularly in blended families or where relationships are disputed.
| Scenario | Key legal issue |
|---|---|
| No will exists | Who qualifies as a spouse, de facto partner, or child under intestacy rules? |
| Will set aside by court | Which intestacy rules apply and who benefits? |
| Competing relationship claims | Did the deceased have one or more de facto partners at the time of death? |
| Disputed parentage | Is a claimant legally recognised as a child of the deceased? |
Intestacy rules in New South Wales are set out in the Succession Act 2006 (NSW) and follow a strict hierarchy. A surviving spouse or de facto partner takes priority, followed by children, then more distant relatives. When family structures are complex, these rules produce outcomes that multiple parties contest. Establishing the legal status of a relationship, particularly a de facto partnership, often requires its own court proceedings before the estate can be distributed.
8. Comparing probate dispute types at a glance
Understanding which type of dispute applies to your situation shapes every decision that follows, from which court to approach to which deadlines to watch.
| Dispute type | Typical claimant | Legal focus | When it arises |
|---|---|---|---|
| Will validity | Beneficiary, family member | Capacity, execution, fraud | After death, before or after probate granted |
| Family provision | Spouse, child, dependant | Adequate financial provision | After probate, strict time limits apply |
| Executor conduct | Beneficiary | Fiduciary duty, misconduct | During estate administration |
| Trust dispute | Beneficiary, trustee | Trust terms, trustee authority | During or after estate administration |
| Estate administration | Beneficiary | Delay, diligence, process | During estate administration |
| Intestacy or heirship | Potential heir | Relationship status, entitlement | When no valid will exists |
Some disputes overlap. A beneficiary might simultaneously challenge an executor’s conduct and bring a family provision claim. Simons George Legal regularly advises clients on inheritance disputes where multiple dispute types intersect.
Funding your legal matter — No Win, No Fee
Probate litigation carries real costs, and those costs can deter people with legitimate claims from seeking the outcome they deserve. Simons George Legal offers No Win, No Fee arrangements for eligible estate disputes, removing the upfront financial barrier for clients with a genuine case.
Eligibility is assessed during a free 30-minute initial consultation. At that meeting, the firm reviews the facts of your matter, identifies the type of dispute involved, and advises whether a No Win, No Fee arrangement is appropriate. If it is, you pay nothing unless your matter is resolved successfully.
To book your free case assessment, contact Simons George Legal directly through the website or by phone. There is no obligation and no cost to find out where you stand.
No Win, No Fee arrangements are subject to case eligibility and a written costs agreement. Liability limited by a scheme approved under Professional Standards Legislation.
Key takeaways
Correctly identifying the type of probate dispute you face determines which legal process applies, which deadlines are critical, and what evidence you need to build a strong case.
| Point | Details |
|---|---|
| Six core dispute types | Will validity, family provision, executor conduct, trust disputes, administration, and intestacy each require a different legal approach. |
| Will contests need specific grounds | Dissatisfaction alone is not enough; courts require proof of incapacity, undue influence, or improper execution. |
| Family provision is separate from will contests | A family provision claim can succeed even when the will is valid and properly executed. |
| Evidence is decisive | In executor and trust disputes, documented timelines, accounts, and correspondence determine outcomes. |
| Intestacy adds complexity | Blended families and disputed relationships make intestacy disputes among the most fact-intensive to resolve. |
What I have learned from years of probate disputes
After working through many contested estate matters, the pattern I see most often is not malice. It is confusion. Families argue for months about whether they are contesting a will or making a family provision claim, and by the time they get proper advice, a deadline has passed or evidence has been lost.
The distinction between a will contest and a family provision claim is the one I spend the most time explaining. They feel similar from the outside. Both involve someone who is unhappy with what they received. But legally, they are completely different proceedings with different burdens of proof and different time limits. Getting that wrong early can end a legitimate claim before it starts.
The other thing I have seen repeatedly is how much executor disputes escalate because of poor communication rather than actual wrongdoing. An executor who goes silent for six months, even with good intentions, creates the conditions for a dispute. Transparency is not just good practice. It is a legal obligation. If you are an executor and you are unsure what your duties require, get advice before beneficiaries start asking questions you cannot answer.
Early legal advice is not a luxury in probate matters. It is the single most effective way to protect your position, whether you are a claimant or a person defending an estate.
— George
How Simons George Legal can help with your estate dispute

Simons George Legal is a Bondi-based wills and estates practice with a strong focus on contested matters across Sydney. Whether you are facing a will validity challenge, a family provision claim, an executor dispute, or a complex trust conflict, the firm provides clear advice tailored to your specific circumstances.
The team at Simons George Legal acts in estate litigation matters with the goal of protecting your rights while keeping costs proportionate to the outcome. Every new client receives a complimentary 30-minute consultation to assess their situation and identify the right path forward. For comprehensive support across all probate and estate matters, visit the wills and estates lawyers page to learn more or book your free consultation today.
FAQ
What is the most common type of probate dispute?
Will validity challenges and family provision claims are the most frequently litigated probate dispute types in Australia. Both arise regularly in blended families and situations where the deceased’s wishes conflict with the expectations of close relatives.
Can I contest a will if I was simply left out?
Being left out of a will is not sufficient on its own to contest its validity. You must establish a recognised legal ground such as lack of testamentary capacity or undue influence. However, you may have a separate right to bring a family provision claim if you are an eligible person who was inadequately provided for.
How long do I have to bring a probate dispute in NSW?
Time limits vary by dispute type. Family provision claims in NSW must generally be filed within 12 months of the date of death. Will validity challenges have different procedural timelines. Missing a deadline can extinguish your right to claim, so seek legal advice as soon as possible after the death.
What happens if someone dies without a will?
When a person dies without a valid will, their estate is distributed according to the intestacy rules in the Succession Act 2006 (NSW). Intestacy disputes arise when parties disagree about who qualifies as a spouse, de facto partner, or child under those rules, particularly in complex family situations.
Can an executor be removed?
Yes. A court can remove an executor who has breached their fiduciary duties, mismanaged estate assets, or failed to administer the estate within a reasonable time. Evidence of misconduct including financial accounts, correspondence, and documented timelines is required to support an application for removal.