Alter Ego Trusts
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What Is an Alter Ego Trust?
Some court decisions — especially in family property disputes — talk about trusts being the "alter ego" or "puppet" of one person. That language has sometimes led people to think that, if a New Zealand trust is called an alter ego trust, it can be automatically disregarded or treated as that person's own property.
That is not the law.
- Calling a trust an "alter ego" or "puppet" does not, by itself, make it a sham or automatically invalid.
- New Zealand courts have confirmed there is no "halfway house" between a valid trust and a sham.
- "Alter ego" language may, in some cases, be evidence that helps prove a sham or invalidity — but it is not a separate legal ground on its own.
The real focus remains on the parties' true intentions, the trust deed, and how the trust is actually administered.
The Law on Alter Ego Trusts in New Zealand
Understanding the distinction between "alter ego" language and the legal tests that actually matter.
In some family law cases, courts have described a trust or company as the "alter ego" or "puppet" of one party — usually to reflect the level of practical control that person has.
Fogarty J explained the difference between a sham and an alter ego in Marriage of Gould: an alter ego description is about practical control — a party may establish a trust over which he or she exercises control, and it may be correct to describe that trust as the alter ego of that party — but it would not be correct to describe its existence or its ownership of property as a sham. The trust is real; the control is real; but they are not the same thing.
In other words:
- An alter ego description is about practical control.
- A sham is about pretending something is a trust when everyone intends something different.
In Official Assignee v Wilson, Chisholm J rejected the idea that "alter ego trusts" are a separate category that can simply be set aside. He emphasised that the orthodox sham test (common intention to mislead) still applies:
"The underlying common intention requirement for a sham has been consistently adopted by the Court of Appeal and is clearly binding on this Court. If alter ego trusts were to be automatically recognised as shams that underlying requirement would be negated. The result would be that a halfway house between a conventional sham trust and a valid trust would be created … I accept that view. It seems to me that to adopt a halfway house would be to effectively re-write the traditional understanding of a sham."
The Court of Appeal upheld this approach, stating:
"Actual control alone does not provide justification for looking through/invalidating a trust. The uptake of control by someone other than an authorised person cannot be sufficient to extinguish the rights of the beneficiaries under a trust. It is difficult to see the alter ego trust operating in New Zealand as an independent cause of action."
So, in New Zealand:
- Actual control alone is not enough to invalidate a trust.
- "Alter ego" is not an independent legal cause of action.
- To disregard a trust you still need to show a sham, invalidity (e.g. no intention to create a trust, no certainty of beneficiaries or property), or rely on specific statutory powers (for example, under relationship property legislation).
Several Australian family law decisions — and a small number of New Zealand decisions — have used "alter ego" language in the context of relationship property or spousal support claims. These often aim to do justice between spouses, but they can be misleading if treated as general trust law.
Key cases include:
- Ascot Investments v Harper — Gibbs J indicated that sham transactions may be disregarded and that companies which are mere puppets of a party may, in some circumstances, be looked through in family property proceedings.
- In the Marriage of Kelly (No 2) — the Full Court treated the assets of a family trust under the control of one party as a financial resource.
- In the Marriage of Ashton — the trust assets were effectively treated as the husband's property for matrimonial property division because he had de facto ownership and control, even though he was not a named beneficiary, and used the trust assets as if they were his own.
- In the Marriage of Stein, Davidson, and Gould — similar reasoning, focusing on how the trust was used and controlled in reality.
New Zealand decisions such as Prime v Hardie and Glass v Hughey applied some of these Australian concepts, sometimes treating a trust being the "alter ego" of one party as if that were enough to treat the trust assets as that person's property.
With respect, the better view — reflected in Official Assignee v Wilson — is that:
- "Alter ego" descriptions may be evidence of how a trust is used in practice;
- but they do not, by themselves, justify ignoring the trust as if it were never validly created, unless the proper sham or invalidity tests are met, or a statute gives that power.
Putting the cases together:
- A trust will not be set aside as a sham or nullity just because one person has significant influence or practical control.
- However, if a person consistently treats trust assets as their own, ignores trustee duties, and uses a trustee company as a mere puppet, courts (especially in family disputes) may:
- treat the trust assets as a resource available to that person,
- impose constructive trusts or other equitable remedies, or
- scrutinise whether the trust was ever validly constituted.
That is why proper trust design, trustee selection, and day-to-day administration are so important.
Case references: In the Marriage of Gould (1993) 17 FamLR 156; Official Assignee v Wilson [2006] 2 NZLR 841 (HC), [2008] NZCA 122, [2008] 3 NZLR 45 (CA); Ascot Investments Pty Ltd v Harper (1981) 33 ALR 631; DCSR v B [2000] FMCAfam 32; In the Marriage of Kelly (No 2) (1981) 7 Fam LR 762; In the Marriage of Ashton (1986) 11 Fam LR 457; In the Marriage of Stein (1986) 11 Fam LR 353; In the Marriage of KR and MI Davidson (1991) 14 Fam LR 580; Prime v Hardie [2003] NZFLR 481; Glass v Hughey [2003] NZFLR 865; Turner v Lynsky (HC, Blenheim, CIV 2007-406-204, 7 September 2007).
How We Can Help
Review Your Trust
We assess whether your trust is at risk of being treated as an alter ego — looking at the deed, the way it's been operated, and the current trustee arrangements.
Recommend Changes
If there are problems, we provide clear recommendations on how to fix them — from varying the trust deed to changing trustee arrangements and improving administration practices.
Restructure If Needed
We prepare all necessary deeds of variation, updated resolutions, and trustee guidance to ensure your trust is genuinely independent and properly protected.
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Request a trust review — we'll tell you whether your trust is at risk and what it will cost to fix. No obligation.