Few things feel more personal than an inheritance – money, property or heirlooms passed down within your family, often intended to stay in the family for generations. In England & Wales an inheritance is usually treated as belonging to you alone, but on divorce it can be drawn into the settlement in some circumstances – particularly if it has been mixed with joint finances or is needed to meet the other partner's needs. A prenup is one of the clearest ways to record that an inheritance is yours and keep it ring-fenced. This guide explains how inheritances are treated on divorce, exactly how a prenup protects one, and the practical steps that keep that protection intact.
How inheritances are treated on divorce
An inheritance is generally regarded as non-matrimonial property – yours rather than shared – because it did not arise from the joint efforts of the marriage. That is the starting point, and it is a strong one. But it is not absolute, and the protection can erode in two main ways, which we look at next. For the wider context, see inheritance and divorce and the distinction between matrimonial and non-matrimonial property.
The mingling problem
The single biggest threat to an inheritance is mingling – mixing it with joint money. Paying an inheritance into a shared account, using it to buy or improve the family home, or otherwise blending it with marital finances can convert it, in whole or in part, into a shared asset. Once it is bound up with the family's life, a court is far more likely to treat it as matrimonial property to be divided.
The needs backstop
Even a carefully separated inheritance can be drawn in if it is needed to meet the other partner's reasonable needs – a home or an income – particularly where there are no other resources to meet them. Meeting needs is a backstop the court will not give up, however clearly the inheritance is labelled as separate.
What a prenup does to protect an inheritance
A prenup lets you record clearly that an inheritance – whether already received or still expected – is to be kept as your separate property, and set out how it should be treated if the marriage ends. Setting this out in advance does two things: it removes any argument later about what the inheritance was and what you intended, and it gives a court a strong steer to leave it with you. List the inheritance, or the expectation of it, in your disclosure so the record is complete.
Keeping the protection intact in practice
A prenup works best alongside sensible day-to-day habits. To keep an inheritance protected:
- Keep it in your sole name – a separate account or holding, not a joint one.
- Avoid using it for joint purchases, especially the family home, where possible; if you do, record the contribution.
- Keep clear records of what you received, when, and from whom.
- Consider pairing the prenup with an up-to-date will and, for larger sums, a trust.
This matters most in a second marriage or where you want to protect assets for children from a previous relationship.
The one limit
As ever, an agreement cannot leave a partner in real need, so a court retains its discretion (see are prenups legally binding?). But a fair prenup that protects a family inheritance while still providing properly for both partners from the wider pot is exactly the kind of agreement courts respect. The aim is to keep what was always meant to stay in your family, not to strip a partner of a fair outcome.
How to protect an inheritance with a prenup, in practice
To protect an inheritance with a prenup, do two things: record clearly in the agreement that the inheritance – received or expected – is your separate property, and keep it separate in practice, in your sole name rather than mingled into joint accounts or the family home. Together these give a court the clearest possible steer to leave it with you, provided the overall settlement remains fair.
Why an agreement helps: the Radmacher position
It is worth understanding why recording an inheritance in a prenup makes a practical difference. Since Radmacher v Granatino (2010), an English court will give effect to a freely made, fair agreement unless it would be unfair to hold the parties to it. A prenup is not automatically binding – the court keeps its discretion under the Matrimonial Causes Act 1973, and needs and any children come first – but where both partners disclosed their finances, each took independent legal advice, and the agreement was signed in good time (the Law Commission suggested at least 28 days before the wedding), a clause ring-fencing an inheritance is far more likely to be respected. In other words, the document turns a private intention into something a court can actually rely on.
A worked example: an inheritance kept separate
Imagine one partner inherits £150,000 from a grandparent five years into the marriage. If they pay it into a sole-name savings account, keep clear records of where it came from, and their prenup already states that inheritances are separate property, the money stands a strong chance of being left with them on divorce. Now imagine the same £150,000 is instead paid into the joint account and used to build an extension on the family home. It has been mingled and tied up with everyone’s needs, and a court is far more likely to treat it as a shared, matrimonial asset. The prenup helps in both cases, but day-to-day habits decide how much protection actually survives.
Heirlooms and non-cash inheritances
Not every inheritance is money. Family jewellery, art, a share in a farm or a property passed down the generations all raise the same issue, and a prenup can name them specifically as separate property. For chattels and collections it helps to record a description, an approximate value and provenance – see art, antiques and collectibles in a prenup. Where an inheritance sits abroad, note that an English court considers worldwide assets, so foreign inheritances belong in your disclosure too. And because whether you inherit at all depends on someone else’s will, it is worth reading how to protect a future inheritance if the money has not yet arrived.
A short checklist for protecting an inheritance
If you want to keep an inheritance out of the matrimonial pot, a few steps make the difference between protection that holds and protection that quietly evaporates:
- Record it in the prenup as separate, non-matrimonial property, whether it is money, property or chattels.
- Keep it in your sole name – a dedicated account or holding, never the joint account.
- Do not spend it on the family home if you can avoid it; that is the classic route by which an inheritance becomes shared.
- Keep the paperwork – the will, the grant of probate, bank records showing the source of the funds.
- Disclose it fully in your disclosure schedule, because concealment undermines the whole agreement.
- Make a will at the same time, since marriage usually revokes an existing one and the two documents cover different risks.
None of these steps is difficult, but together they give a court the clearest possible picture that the inheritance was always meant to stay with you. This is particularly important in a second marriage or where an inheritance forms part of wider inherited wealth, and it pairs naturally with the wider distinction between joint and separate property. Where the sums are large, take independent legal advice so the wording matches your circumstances.
The two dates that decide what happens to an inheritance
An inheritance has two legally significant moments: when it is received, and what happens to it afterwards. The Supreme Court's decision in Standish v Standish fixed the rule for the first. An inheritance is non-matrimonial property, outside the sharing principle that divides the fruits of the marriage equally, and that is true whether it arrives before the wedding or twenty years into the marriage. The second moment is where inheritances are lost. The same judgment held that non-matrimonial property becomes matrimonial where the parties have been dealing with it in a way that shows that, over time, they have been treating it as shared between them. Paying it into the joint account, using it to buy or extend the family home, or moving it into joint names all point that way, though the court was clear that a transfer made purely to save tax does not, by itself, show an intention to share.
Families increasingly pass wealth on during life rather than at death, and the tax rules encourage it: under section 3A of the Inheritance Tax Act 1984 a lifetime gift from one individual to another is a potentially exempt transfer, free of inheritance tax if the donor survives seven years. A gift of that kind is treated on divorce exactly like an inheritance, non-matrimonial unless later treated as shared, so a prenup that mentions inheritances should mention lifetime gifts from family in the same breath.
The prenup's role is to fix the intention at the first moment and govern conduct at the second. Record the inheritance, received or expected, in the financial disclosure; state that it is non-matrimonial and is to remain the recipient's; and say what happens if it is used for the family home, for instance that the sum contributed is to be returned to the recipient before the balance is shared. Section 25 of the Matrimonial Causes Act 1973 keeps the court's discretion to meet needs from any asset, so the agreement has to make fair provision for the other partner from what is shared, but under Radmacher v Granatino an agreement that does that, freely entered into with a full appreciation of its implications, is one the court will give effect to.
Inherited family wealth and the Standish case
For families passing wealth down the generations, the leading authority is the Supreme Court's 2025 decision in Standish v Standish. The husband had transferred about £80 million of his own wealth to his wife as part of inheritance tax planning, intending that she would settle it into trusts for their children. She did not, and on divorce argued that the transfer had made the assets matrimonial property to be shared equally. The court held that it had not: the sharing principle applies to matrimonial property, and what converts non-matrimonial wealth into it is how the parties have been dealing with the asset over time, not a transfer made to save tax.
Two lessons follow for inherited wealth. The exemption in section 18 of the Inheritance Tax Act 1984 for transfers between spouses makes moving assets into a spouse's name attractive for estate planning, and is a trap if nobody records why it was done; a prenup can say in terms that tax-driven transfers between you do not change how the assets are treated on divorce. And inherited wealth keeps its separate character by being kept separate, held in the recipient's name rather than paid into the joint account or spent on the family home, with trusts and wider estate planning working alongside the agreement rather than instead of it.
Protecting an inheritance: FAQs
Does a prenup make an inheritance clause binding?
Not automatically – but since Radmacher v Granatino (2010) a fair, well-informed clause carries real weight (see are prenups legally binding?).
What if the inheritance is a house rather than cash?
The same principle applies – name it as separate property and keep it in your sole name (see matrimonial vs non-matrimonial property).
Is an inheritance automatically protected in a divorce?
Usually treated as separate, but it can be drawn in if mingled or needed to meet needs (see inheritance and divorce).
Can a prenup protect an inheritance I have not received yet?
Yes – see protecting a future inheritance.
Does mingling an inheritance lose its protection?
It can – paying it into a joint account or the family home blurs the line, so keep it separate (see matrimonial vs non-matrimonial property).
Do I need a will as well as a prenup?
Yes – a prenup covers divorce, a will covers death, and marriage usually revokes an existing will (see prenups and wills).
Can I protect an inheritance meant for my children?
Yes – this is common in second marriages (see protecting children's inheritance).
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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.