
Can a Testamentary Trust be contested? What families need to know
When planning your estate, testamentary trusts have become an increasingly popular tool for protecting assets and providing ongoing benefits to beneficiaries. However, many families wonder whether these trusts can be challenged in court. Understanding the circumstances under which a testamentary trust can be contested is crucial for both those creating wills and potential beneficiaries.
What is a Testamentary Trust?
A testamentary trust is established through a will and only comes into effect after the will-maker’s death. Unlike family trusts created during someone’s lifetime, testamentary trusts are specifically designed to manage and distribute assets according to the deceased’s wishes while providing ongoing protection and tax benefits for beneficiaries.
These trusts are particularly valuable for families with minor children, beneficiaries with disabilities, or those seeking to protect assets from potential future claims. They can provide income streaming benefits, asset protection from creditors, and flexibility in distributions over time.
Can Testamentary Trusts Be Contested?
The short answer is yes, testamentary trusts can be contested, but the grounds for challenging them are specific and require strong evidence. Since a testamentary trust is created through a will, any successful challenge to the will itself would affect the trust’s validity.
Common Grounds for Contesting a Testamentary Trust
Lack of Testamentary Capacity
One of the most common challenges involves questioning whether the will-maker had the mental capacity to understand the nature and consequences of creating the trust. The challenger must prove that at the time of making the will, the deceased did not understand the extent of their assets, the claims of potential beneficiaries, or the effect of the trust provisions.
Undue Influence
Claims of undue influence arise when someone alleges that the will-maker was pressured or coerced into establishing the trust in a particular way. This often occurs in family situations where there are concerns about a caregiver, new spouse, or family member who may have had excessive influence over the deceased’s decisions.
Fraud or Forgery
Challenges may be mounted if there are allegations that the will containing the testamentary trust was forged or created through fraudulent means. This requires substantial evidence and is relatively rare in practice.
Improper Execution
In Western Australia, wills must meet specific legal requirements for execution, including proper witnessing. If these requirements weren’t met, the entire will, including any testamentary trust provisions, could be invalid.
Family Provision Claims
Under the Family Provision Act 1972 (WA), eligible family members can claim adequate provision from an estate if they believe they haven’t been properly provided for. While this doesn’t directly contest the trust structure, successful claims can affect the assets available to fund the trust.
Who Can Contest a Testamentary Trust?
Not everyone has the legal standing to challenge a testamentary trust. Generally, only those with a legitimate interest in the estate can bring a contest. This typically includes:
- Beneficiaries named in the will
- Family members who would inherit under intestacy laws
- Previous beneficiaries from earlier wills
- Dependants who may have a family provision claim
Protecting Your Testamentary Trust from Challenges
While no estate planning strategy is completely challenge-proof, several steps can significantly reduce the risk of successful contests:
- Proper Legal Documentation
Ensure your will is professionally drafted and executed with proper legal formalities. This includes having the document witnessed correctly and maintaining detailed records of the decision-making process. - Medical Evidence
If there are concerns about potential capacity challenges, consider obtaining medical assessments at the time of will-making to document your mental state and decision-making ability. - Clear Communication
Where appropriate, communicate your intentions to family members. While this doesn’t prevent challenges, it can help family members understand your reasoning and reduce the likelihood of disputes. - Regular Updates
Review and update your will regularly, especially after major life events. This demonstrates ongoing capacity and intention while ensuring your estate plan reflects current circumstances. - Professional Advice
Work with experienced estate planning lawyers who understand the complexities of testamentary trusts and can structure them to minimize challenge risks.
The Importance of Professional Guidance
Testamentary trusts involve complex legal and tax considerations that require specialized knowledge. The structure, terms, and administration of these trusts can significantly impact their effectiveness and vulnerability to challenges.
At Solomon Hollett Lawyers, we understand that estate planning is about more than just distributing assets—it’s about protecting your family’s future and ensuring your wishes are respected. Our experienced team can help you design testamentary trust structures that achieve your objectives while minimizing the risk of future disputes.
Moving Forward with Confidence
While testamentary trusts can be contested under certain circumstances, proper planning and professional advice can significantly reduce these risks. Understanding the potential challenges allows families to make informed decisions about their estate planning strategies.
If you’re considering establishing a testamentary trust or have concerns about an existing estate plan, seeking experienced legal advice is essential. Every family’s situation is unique, and the right approach depends on your specific circumstances, family dynamics, and long-term objectives.
Don’t leave your family’s future to chance. Contact our Wills and estate planning lawyers in Perth today to discuss how we can help you create a robust estate plan that protects your loved ones and honors your wishes for generations to come.
Saudamini joined Solomon Hollett at the very start of 2025, having obtained her Bachelor of Laws here in Perth in 2020 and being admitted to the Supreme Court of Western Australia in early 2022. Saudamini has worked in a number of firms in WA and has a strong background in Wills and estate planning, estate administration and probate.

