Navigating Estate Litigation, Trusts, and Succession Law in New Zealand: Insights from the 2024 Supreme Court 'Alphabet' Decision

Carolyn Ranson | April 28, 2025

At Smith and Partners, we pride ourselves on staying abreast of pivotal legal developments that shape the landscape of estate litigation, trusts, and succession law in New Zealand. The 2024 Supreme Court decision in A, B and C v D and E Limited as Trustees of the Z Trust—commonly referred to as the ‘Alphabet’ case—serves as a landmark ruling with significant implications for fiduciary duties and estate planning.

 Understanding the ‘Alphabet’ Case

In this case, the appellants—adult children of the deceased, Robert—challenged the transfer of his assets into a trust, which effectively excluded them from benefiting upon his death. They argued that Robert’s actions breached fiduciary duties owed to them, stemming from a history of abuse during their childhood.
The Supreme Court acknowledged that fiduciary duties exist between a parent and minor child but clarified that these duties generally cease once the child reaches adulthood or the caregiving relationship ends. The Court declined to extend these duties into adulthood based solely on past abuse, emphasizing that imposing such obligations without an ongoing relationship would “read equity backwards” and create legal uncertainty.

 Implications for Estate Planning and Trusts

This decision underscores the importance of transparent and equitable estate planning. While the Court recognized the appellants’ hardships, it highlighted the limitations of current legislation in addressing such scenarios. Notably, the Family Protection Act 1955 lacks provisions to counteract asset transfers, such as to a Trust, intended to defeat potential claims, a gap the Law Commission has proposed to address in future reforms.

 Our Expertise in Navigating Complex Estate Matters

Our firm specialises in guiding clients through the intricacies of estate litigation, trust disputes, and succession planning. We offer comprehensive services, including:

  • Estate Litigation: Representing clients in challenging wills and navigating disputes arising from estate distributions.
  • Trust Disputes: Advising on conflicts between trustees and beneficiaries, and addressing issues of trustee obligations and conduct.
  • Succession Planning: Crafting strategies to ensure fair and legally sound distribution of assets, minimising potential disputes.

Our team is committed to providing empathetic and cost-effective legal solutions, ensuring our clients’ rights and interests are protected.

 Staying Ahead: Legislative Reforms on the Horizon

The ‘Alphabet’ case has spotlighted the need for legislative change to address asset transfers that undermine rightful/ethical claims. The Law Commission’s proposals aim to empower courts to recover assets transferred with the intent to defeat entitlements, signalling a future shift towards more robust protections for claimants.

Note: This article is for informational purposes only and does not constitute legal advice. For personalised guidance, please consult with our legal professionals

 Contact Us

If you require assistance with estate/life planning, trust management, or potential disputes, our experienced team is here to help.

Loading author information...

Get In Touch

Read More Articles

Brown and white brick building with tower, under blue sky.
By Mikayla Sagar February 15, 2026
Probate vs. Letters of Administration
Wedding rings on divorce papers as someone signs; blue and white.
By Natalie Miller February 6, 2026
Most people think prenups are something celebrities sign before a whirlwind wedding. But in New Zealand, a contracting out agreement is far more common, far more practical and, for many couples, essential. Under the Property (Relationships) Act 1976 (“Act”), the guiding principle is that all relationship property should be shared equally when a de facto relationship, civil union, or marriage ends. There are certain exceptions – as always. The only way to avoid the presumed 50/50 sharing regime is to contract out of the Act. That is exactly what a contracting out agreement does. If the agreement meets the legal requirements, it allows couples to decide for themselves how their assets and liabilities will be divided if the relationship ends through separation or death. What happens if you don’t have one?  If you are in a qualifying relationship and don’t have a contracting out agreement in place, most of what you own or owe could be divided equally if you separate or if one partner dies. Think you are safe because the asset is in your sole name or was gifted to you? Think again. In certain circumstances these types of property could still be up for equal division. Why you should seriously consider one For many people, the primary motivation is protection. A contracting out agreement can ring fence specific assets so they remain your separate property, such as a home you purchased before the relationship or savings you built independently. It can also ensure you do not become responsible for your partner’s debt, such as a student loan or personal liabilities that you had no part in creating. Just as importantly, a contracting out agreement sets clear expectations for how newly acquired assets and debts are owned and managed during the relationship and what will happen to those if the relationship ends. By defining everything upfront, the agreement can prevent confusion, conflict and costly disputes later. When can you get a contracting out agreement? A contracting out agreement can be put in place at almost any stage. Some couples arrange one at the very beginning of a relationship. Others do it after buying a home together, having children or blending finances. It is also possible to enter into one at the end of a relationship. However, the safest and cleanest approach is to get one as early as possible, ideally before the relationship becomes a qualifying relationship or before either partner acquires rights under the Act.
Two pairs of hands clasped together, suggesting support and comfort.
By Kimberley Brown February 6, 2026
Writing your own Will or using a DIY Will Kit may seem like an easy and cost-effective option. However, while a homemade or online Will may appear to save money upfront, it will often cause major complications and costs in the long run. Learn why getting legal advice ensures your Will is valid, effective, and truly reflects your wishes.
Hand holding a notepad with
By Kimberley Brown February 5, 2026
Even a small error in your Will can cause significant delays and unnecessary expenses once it reaches the High Court for Probate.