When you die, your crypto forms part of your estate for inheritance tax — but your heirs can only claim it if they can actually access it. Without your keys, self-custodied crypto is lost forever. Here's how to make sure your crypto passes on, safely and tax-efficiently.
Important Risk Warning
This is not financial advice. Cryptocurrency investments are highly volatile. The value of your investment can go down as well as up, and you could lose all the money you invest. Don't invest unless you're prepared to lose all the money you put in.
When you die, your crypto becomes part of your estate for inheritance tax like any other asset — but there's a brutal catch that doesn't apply to a bank account: your heirs can only inherit crypto they can actually access. If your Bitcoin sits in a self-custody wallet and nobody has the keys or recovery phrase, it's lost forever, tax still potentially due on value no one can reach. Sorting this out while you're alive is the single most important thing most crypto holders never get around to. This is a planning guide, not legal advice.
Fortunes have vanished this way. Not stolen, not lost to a crash — just locked behind keys that died with their owner. It's entirely preventable, and almost nobody prevents it.
Yes. HMRC treats cryptoassets as property, so their value at the date of death forms part of your estate for inheritance tax, potentially charged at 40% on the value above the nil-rate band. It doesn't matter that crypto is digital or held abroad on an exchange — if you're UK-domiciled, it counts toward your estate the same as cash, shares or a house.
That creates a nasty scenario: crypto can be taxable as part of your estate even if your heirs can't access it because they don't have the keys. The tax is assessed on the value; the accessibility is a separate, practical problem your family is left to solve. We cover the tax mechanics in detail in our crypto inheritance tax guide. The point to grasp now: the taxman and your heirs treat "you owned it" and "we can reach it" very differently.
Leave clear, secure instructions so your executor can find and unlock your crypto — without exposing those details while you're alive. This is the crux, and it's a genuine tightrope: write your seed phrase somewhere too accessible and you invite theft; hide it too well and it dies with you.
Sensible approaches include:
Never write your full recovery phrase into your will itself — wills become public documents after probate, which would hand your crypto to anyone who reads it.
Reference it in your will, but keep the sensitive access details separate and secure. Your will should make clear that you hold cryptoassets and who inherits them, so your estate is administered properly and the value is declared for inheritance tax. What it must not contain is the actual keys or recovery phrases, because a will can become a public record through probate.
The usual structure is: the will names the crypto as an asset and its beneficiaries, while a separate, secure document (a letter of wishes, a sealed instruction, or a specialist inheritance service) holds the practical access steps. A solicitor experienced with digital assets can set this up properly — increasingly worthwhile as more people hold meaningful crypto. Combined with the gifting strategies in our gifting crypto tax guide, it's part of sensible estate planning rather than a morbid afterthought.
Crypto on an exchange is easier for heirs to claim than self-custodied crypto, because the exchange holds the keys — but they'll need to prove entitlement through probate. Exchanges have processes for a deceased customer's account, usually requiring a death certificate and grant of probate before releasing assets to the estate. It's bureaucratic but achievable, unlike a lost self-custody key.
The trade-off is the usual one: exchange-held crypto is more recoverable for your family but carries custodial and platform risk (and no FSCS protection) while you're alive, as we discuss in our self-custody guide. Some holders deliberately keep a portion on a reputable exchange partly for this reason. Whatever you choose, leave your executor a clear record of which platforms you use — they can't claim from an exchange they don't know exists.
Is crypto subject to inheritance tax in the UK? Yes. HMRC treats crypto as property, so its value at your death forms part of your estate and may be taxed at 40% above the nil-rate band — the same as cash or shares. It counts even if held on an overseas exchange.
What happens to my Bitcoin if I die without sharing my keys? It's almost certainly lost forever. Self-custodied crypto can only be accessed with the private keys or recovery phrase. If no one can find or unlock them, the crypto is unreachable — though its value may still count toward your estate for tax.
Should I write my seed phrase in my will? No. Wills can become public through probate, so putting your recovery phrase in one could expose your crypto to theft. Reference the crypto in your will, but keep access details in a separate, secure document or service.
How do my heirs claim crypto held on an exchange? The exchange has a process for deceased customers, typically requiring a death certificate and grant of probate before releasing the assets to the estate. It's more recoverable than self-custody, provided your executor knows which exchange you used.
Can I reduce inheritance tax on my crypto? Potentially, through the same estate-planning tools that apply to other assets — lifetime gifts (subject to the seven-year rule), spousal transfers, and charitable giving. Our gifting crypto tax and inheritance tax guides cover the options.
Do the one thing most crypto holders never do: this week, write a secure inventory of what you hold and where, store your recovery details safely with clear retrieval instructions for a trusted executor, and reference the crypto in your will without putting keys in it. For meaningful holdings, a solicitor who understands digital assets is worth every penny. This isn't legal advice — but a couple of hours now is the difference between passing your crypto on and it dying with you.
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