Cryptocurrency might feel different from a house or a pension, but on divorce in England & Wales it is treated as an asset like any other. If you hold Bitcoin, other cryptocurrencies, or digital assets such as NFTs or tokens, a court can take them into account – and a prenup can set out how they should be handled. The two things that matter most with crypto are disclosure (because it is easy to overlook or to hide) and volatility (because values swing sharply). This guide covers both, and how to record digital assets in a prenup so the agreement is effective and honest.
Crypto is part of the financial picture
Bitcoin, Ethereum, other cryptocurrencies, stablecoins, tokens and NFTs all count as property that a court can bring into a divorce settlement, just like cash, shares or a pension. That means they should be disclosed and, if you want them protected, addressed specifically in the agreement. Treating crypto as somehow off the books is a mistake: it forms part of how assets are divided and part of what you set out in a prenup.
Disclosure is essential – and the biggest risk
Because crypto can be easy to overlook – or to hide behind private wallets and exchanges – full and frank financial disclosure matters even more here than usual. List your holdings in your disclosure schedule with:
- the type of asset (e.g. Bitcoin, Ethereum, a specific token or NFT);
- the approximate quantity or units held;
- a value in pounds and the date of that valuation;
- where it is held (exchange or wallet), in general terms.
Failing to disclose assets – and hiding assets in particular – is one of the quickest ways to see an agreement disregarded later. Recording crypto properly protects you as much as your partner.
Dealing with volatility
Crypto's defining feature is that its value moves fast, sometimes doubling or halving in months. That creates a practical problem for any prenup: a figure recorded today may be far off by the time it matters. Two tools help:
- Note the valuation date clearly, so everyone knows the figure is a snapshot, not a fixed value.
- Address growth and losses – a prenup can record that holdings owned before the marriage are separate property, while setting a fair approach to anything acquired, or gains made, during the marriage.
A review clause is especially useful for volatile assets, letting you revisit the position as values change. See also should a prenup cover future assets? and how to value your assets.
Fairness and the final say
As with every asset, a court keeps the final word and will not let an agreement leave a partner in real need (see are prenups legally binding?). A clear, honest, fair approach to digital assets is what makes the agreement effective – not an attempt to keep a large crypto portfolio entirely off-limits while the other partner struggles.
Putting crypto in a prenup: the essentials
Putting crypto in a prenup comes down to disclosure and clarity. List your holdings in the financial schedule with a value and the date, state which are separate property, and set a fair approach to growth (or losses) during the marriage. Because crypto is volatile and easy to overlook, recording it properly is both a legal safeguard and protection against a later claim that assets were hidden.
Why a crypto clause carries weight: Radmacher
A prenup that deals with cryptocurrency has force for the same reason as any other clause: 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. A prenup is not automatically binding – the court keeps its discretion under the Matrimonial Causes Act 1973, and needs come first – but an honest, well-disclosed approach to digital assets, agreed with independent legal advice on both sides and signed in good time (the Law Commission suggested at least 28 days before the wedding), is exactly what a court will now respect. With crypto, honest disclosure is doing double duty: it satisfies a legal safeguard and it removes the risk of a later accusation that assets were hidden.
A worked example: a pre-marital Bitcoin holding
Imagine one partner holds 2 Bitcoin bought years before the marriage, worth roughly £100,000 at the date of the agreement. A prenup can record the holding, its value and the valuation date, and state that the pre-marital coins are separate property. If the couple later buy more crypto together from joint income, that later acquisition can be treated as matrimonial. Because the value might be £60,000 or £200,000 by the time it matters, the clause should lean on the valuation date and a review mechanism rather than a fixed figure – the point is to fix which holdings are separate, not to pretend the price will stand still.
Wallets, keys and practical disclosure
Crypto raises practical questions ordinary assets do not. You do not need to hand over private keys or seed phrases in a prenup – and you should never write them into any document – but you should disclose the existence, type and approximate value of holdings, and note in general terms where they sit (a named exchange, a hardware wallet). Keeping your own secure record of holdings, and treating pre-marital crypto as a distinct, sole-name asset rather than trading it through joint accounts, preserves the separation. For fast-moving assets, a review clause and the wider points in how to value your assets are especially useful. Deliberately concealing a holding, by contrast, risks the whole agreement (see hidden assets and prenups).
NFTs, staking and other digital assets
Cryptocurrency is only part of the digital-asset picture, and a thorough prenup thinks about the rest. NFTs (non-fungible tokens) representing digital art or collectibles can carry real value and are notoriously hard to price, so treat them much like art and collectibles – describe them, note an approximate value and a date. Staking rewards, yield and airdrops generate new tokens over time, which raises the same question as any income arising during the marriage: are they separate or shared? Tokens earned from staking a pre-marital holding sit in a grey area a prenup can sensibly address. There may also be tax to consider, since disposals of crypto can trigger capital gains, which affects the real value of a holding (see prenups and tax). The guiding principle throughout is the same: disclose what exists, be clear about what is separate, and set a fair approach to anything that grows or is earned during the marriage.
A short checklist for crypto in a prenup
- List every holding – coins, tokens, NFTs – with a value and the date.
- State which are separate property (typically pre-marital holdings).
- Address growth and new tokens earned during the marriage.
- Note the valuation date and treat figures as snapshots.
- Add a review clause because values move fast.
- Never record keys or seed phrases anywhere in the document.
Crypto held through a company, fund or pension
Not all crypto is held directly in a personal wallet, and where it sits changes how a prenup should treat it. Some people hold digital assets through a company, a fund, or even within a self-invested pension, and each wrapper carries its own tax and ownership consequences that feed into the value of the underlying holding. A holding inside a company forms part of the value of that business rather than a standalone asset, so it is disclosed and treated as part of your interest in the company. Crypto held in a pension is dealt with as part of your pension, and shared or ring-fenced on the same basis. The guiding principle does not change – disclose what exists, be clear about what is separate, and set a fair approach to growth – but the wording needs to reflect how the asset is actually held, which is another reason significant holdings deserve independent legal advice.
When the market crashes: protecting against losses too
Most people think of a crypto clause as protecting an asset that might grow, but volatility cuts both ways, and a sensible prenup acknowledges that a holding can fall as easily as it can rise. If your pre-marital Bitcoin is worth £100,000 when you sign and £30,000 by the time the marriage ends, ring-fencing it still matters – you simply keep what remains rather than a larger figure. More importantly, treating the valuation as a fixed number rather than a snapshot can produce absurd results in either direction, which is precisely why a review clause and a clearly noted valuation date are so useful for digital assets. The clause should fix which holdings are separate, not pretend to know what they will be worth. Couples who trade actively should also think about how gains and losses realised during the marriage are shared, since active trading from joint income looks far more matrimonial than a pre-marital holding left untouched.
Crypto prenup FAQs
Does a crypto clause carry weight after Radmacher?
Yes – since Radmacher v Granatino (2010) a fair, well-disclosed agreement carries real weight, though it is not automatically binding (see are prenups legally binding?).
Do I have to reveal my wallet keys in a prenup?
No – never put keys or seed phrases in any document; you disclose the existence, type and value of holdings, not the means to access them.
Is cryptocurrency split in a divorce?
Yes – it is treated as an asset like any other (see how assets are divided).
What if my crypto changes a lot in value?
Note the valuation date and consider a review clause (see should a prenup cover future assets?).
Do I have to disclose crypto in a prenup?
Yes – full disclosure is essential, and hiding crypto can see the whole agreement set aside (see hidden assets and prenups).
Can a prenup protect future crypto gains?
It can set an approach to growth during the marriage; a review clause helps as values move (see prenups and future earnings).
How do you value crypto for a prenup?
Record a pound value and the date it was taken, treating it as a snapshot (see how to value your assets).
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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.