Trusts and prenups are often mentioned in the same breath, because both are used to protect family wealth – and they can work powerfully together. But a trust is not the impenetrable shield people sometimes imagine: on divorce in England & Wales, a court has ways of looking through or at a trust in certain circumstances. Understanding how the two interact helps you use them well. This guide explains what a trust does, where an English court can still reach one, how a prenup reinforces the structure, and why specialist advice is essential when significant trust assets are involved.
What a trust does
Assets held in a properly structured trust are, in principle, owned by the trustees for the benefit of the beneficiaries – not by you personally. That can put them outside the matrimonial pot, because they are not yours to share. Family wealth – a family home, shares in a family business, or an inheritance – is often held this way precisely to keep it separate from any one individual's finances, and to pass it down the generations.
Where a court can still look
A trust reduces exposure but does not always remove it. On divorce, an English court has two main routes to a trust:
- As a financial resource. If you are likely to benefit from a trust – for example, the trustees have historically made distributions to you – the court can treat that likely benefit as one of your resources when deciding what is fair, even without touching the trust directly.
- As a nuptial settlement. Where a trust is closely tied to the marriage (a "nuptial settlement"), the court has power to vary it – redistributing what it holds. Trusts set up long before the marriage, for the wider family, are far less vulnerable than one created around the marriage itself.
So the older, more clearly independent and less marriage-focused a trust is, the stronger its protection.
How a prenup adds protection
A prenup complements a trust rather than duplicating it. It can record that trust interests are not to be shared on divorce, and confirm both partners' understanding of how they should be treated – reinforcing the intention behind the structure and making it harder to argue later that the trust was really a marital asset. Disclose any trust interests you can in your financial picture, even if the exact benefit is uncertain; transparency here supports the agreement rather than undermining it. See also matrimonial vs non-matrimonial property.
Get specialist advice
Trusts are genuinely complex, and a court still keeps its discretion to meet needs (see are prenups legally binding?). If significant trust assets are involved, this is firmly an area for specialist trust and family-law advice alongside your prenup – the two disciplines working together. See high-net-worth prenups for the wider picture.
Using trusts and prenups together
Trusts and prenups work best as a combined strategy: a properly structured trust can hold family wealth outside any one individual's estate, and a prenup records that trust interests are not to be shared on divorce. Neither is a guaranteed shield – an English court can treat a trust as a financial resource or vary a nuptial settlement – but together they materially reduce exposure. Given the complexity, take specialist trust and family-law advice.
How Radmacher fits with a trust
A prenup and a trust reinforce each other, and the reason the prenup adds anything is Radmacher v Granatino (2010). The Supreme Court held that a court should give effect to a freely made, fair agreement unless it would be unfair to hold the parties to it.
So while the trust structure itself does the heavy lifting of keeping assets out of any one person’s estate, the prenup records both partners’ shared understanding that trust interests are not to be shared on divorce – making it much harder to argue later that the trust was really a marital asset. Neither is a guarantee: the court keeps its discretion under the Matrimonial Causes Act 1973, and needs come first.
But an agreement made with disclosure and independent legal advice on both sides gives the whole structure a stronger footing.
A worked example: a long-standing family trust
Imagine a discretionary trust set up by a grandparent 30 years ago, holding shares in the family company and benefiting a wide class of descendants. One beneficiary marries. Because the trust long predates the marriage, was created by someone else for the wider family, and is not tied to this couple’s life, it is far from a “nuptial settlement” and is hard for a court to vary.
The court might still treat any regular distributions the beneficiary receives as a financial resource when deciding what is fair – but the trust capital itself is well insulated. A prenup confirming that the beneficiary’s trust interest is not a shared asset reinforces that position. Contrast a trust set up by the couple shortly before or during the marriage, which is far more exposed to variation.
Disclosure and the limits of a trust
It can feel counter-intuitive to disclose a trust you say is not yours to share, but transparency helps rather than hurts. Disclose what you can – the existence of the trust, your class of interest, and any history of distributions – even if you cannot put a precise figure on your benefit. Hiding a trust interest looks like concealment and can undermine the agreement, much like any hidden asset.
Remember too that a trust is not a device for defeating a genuine claim: a court that suspects a trust is being used to put assets beyond a spouse’s reach can look through it. Used properly, though, a long-standing family trust plus a clear prenup is a powerful combination for inherited wealth.
Beneficiary, settlor or trustee: your role matters
How exposed a trust is on divorce depends partly on your relationship to it. If you are simply one of several discretionary beneficiaries of a long-standing family trust, your interest is uncertain and the trust capital is relatively well insulated – though regular distributions to you can be treated as a resource.
If you are the settlor who created the trust, especially around the time of the marriage, a court may view it as a nuptial settlement it can vary, or even as an attempt to put assets beyond a spouse’s reach. And if you are a trustee as well as a beneficiary, the lines blur further. A prenup cannot change your role, but it can record a shared understanding of how any trust interest should be treated, which supports the structure. This is genuinely technical ground, so specialist legal advice is essential.
How trusts and prenups protect inherited wealth
For families with significant inherited wealth, trusts and prenups are usually part of the same plan rather than alternatives. Wealth might be held in a trust set up by a previous generation, passed to beneficiaries over time, with each family member who marries encouraged to sign a prenup confirming that trust interests are not shared on divorce.
Add up-to-date wills, and sometimes a plan to preserve assets for children, and you have a coherent structure that keeps family wealth in the family across generations and marriages. No single document does it all – the strength is in the combination, and in taking coordinated trust and family-law advice. See prenups and inherited wealth and high-net-worth prenups for the wider picture.
The two ways a court reaches a trust, and how a prenup narrows both
The first route is the statute's definition of resources. Section 25 of the Matrimonial Causes Act 1973 requires the court to consider the property and other financial resources which each party has or is likely to have in the foreseeable future, and a beneficiary's interest under a discretionary trust is a resource if the trustees would, realistically, advance funds on request.
Courts look at the history: a beneficiary who has received regular distributions for years will find the court treating the trust as available, and may find the order framed so as to encourage the trustees to make the money available. A trust nobody has drawn on, with an independent trustee and a wide class of beneficiaries, is a much weaker resource.
The second route is more direct. Section 24 of the Matrimonial Causes Act 1973 gives the court power to vary an ante-nuptial or post-nuptial settlement made on the parties to the marriage, and the courts read "settlement" widely: a trust established in connection with the marriage, or for the benefit of the couple and their children, can be a nuptial settlement whatever it is called, and the court can rewrite its terms to give the other spouse an interest. A dynastic family trust set up by grandparents long before the marriage usually is not, but one created after the wedding to hold the family home or the family company may well be.
A prenup helps on both fronts, within limits. It cannot bind the trustees, who are not parties, and it cannot remove the court's discretion to meet needs. It can record each partner's trust interests in the financial disclosure, since the Law Commission's standard of material information covers them, and state that they are non-matrimonial, which the Supreme Court's decision in Standish v Standish confirms for wealth received from family unless it is treated as shared.
It can also say that the couple do not intend any trust to be treated as a nuptial settlement, which is evidence the court weighs, and provide for the other spouse from resources outside the trust so that the court is never driven to reach in. Under Radmacher v Granatino that is the kind of agreement the court gives effect to.
Trusts and prenups: FAQs
Does a prenup make a trust bullet-proof on divorce?
No – but combined with a well-structured, long-standing trust it materially reduces exposure (see are prenups legally binding?).
Does Radmacher help protect a trust?
Indirectly – since Radmacher v Granatino (2010) a fair prenup confirming trust assets are separate is given real weight, reinforcing the structure.
Can a court touch assets in a trust on divorce?
Sometimes – it can treat a trust as a resource or vary a nuptial settlement, so take advice.
Does a prenup make a trust safer?
It reinforces the intention to keep trust assets separate (see what to include).
What is a nuptial settlement?
A trust closely connected to the marriage, which a court has power to vary – unlike a long-standing family trust set up independently.
Should I disclose a trust I might benefit from?
Yes – disclose what you can, as transparency supports the agreement (see full and frank disclosure).
Are family trusts safer than marriage trusts on divorce?
Generally yes – older, independent family trusts are far less vulnerable than one set up around the marriage (see prenups and inherited wealth).
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UK Prenup is not a law firm and does not provide legal advice. A prenuptial agreement in England & Wales is not automatically binding, and both partners should take independent legal advice before signing.