Kinfolder
Inheriting crypto: what happens to bitcoin?
A hardware wallet in a drawer, a sticker with half a phrase, an exchange app on a locked phone. That is often all a family finds, and it is where inheriting crypto stops resembling inheriting savings. A frozen bank account can be unfrozen. A wallet without its keys cannot. The funds are not stuck somewhere waiting for paperwork; they are gone, and no amount of grief or lawyers changes that.
Below: how crypto passes to heirs, where families get stuck, and what you can do so your own crypto survives the change of hands.
Crypto passes to heirs, access does not
Legally there is little unusual going on. Crypto is property, falls into the estate, and passes by will or by law, like a bank balance. Heirs declare it for inheritance tax at its value on the date of death.
In practice it is another story. A bank knows its account holder and has a procedure for death. A blockchain knows only keys. Whoever holds the seed phrase or private key controls the funds. Whoever does not has nowhere to turn. There is no customer service, no recovery procedure, no court that can force open a wallet when the keys are missing.
That makes crypto the sharpest example of the broader problem we describe in what is a digital legacy: assets whose existence and access depend entirely on what someone recorded during their lifetime.
Exchange or self-custody: a world of difference for heirs
Where the crypto lives determines how much a surviving family can do.
Funds on an exchange
If the crypto sits with a regulated exchange, settlement resembles a bank account. Heirs report the death, send a death certificate and usually proof of inheritance, and the exchange pays out or transfers the balance. It takes time and paperwork, but the funds are reachable.
Self-custody wallets
With a hardware or software wallet there is nobody to write to. Access stands or falls with the seed phrase, usually a series of twelve or twenty-four words. If that series cannot be found, the funds are lost. Estimates vary, but a substantial share of all bitcoin worldwide is considered permanently inaccessible, in part through deaths where the keys were never passed on.
The tax office now sees it too
Since 2026, crypto platforms in the EU report their customers’ holdings to national tax authorities. For estates this cuts two ways.
First: concealment is no longer realistic. The authorities know the assets exist, and heirs must declare them even when they cannot reach them. Second, and this is the painful part: families will more often discover that crypto existed without anyone ever saying where the keys are. Knowing there is wealth and being unable to touch it is a frustration worth sparing your heirs.
How to arrange it for your own crypto
Crypto was one of the reasons I started building Kinfolder. In conversations around the product, the pattern repeats: people have thought carefully about securing their wallet against thieves, and not at all about securing it against their own absence. The second problem is the one that actually destroys the money.
The solution needs no notary and no technical skill, just a few habits.
- Make an overview of what exists. Which exchanges, which wallets, roughly what size. Heirs do not need price charts, they need to know it is there.
- Store keys separately from the overview. A seed phrase does not belong in a will, in the cloud or in an email. A safe physical spot or an encrypted vault, with only the location recorded in your overview.
- Tell one person. As with everything in your digital legacy, a plan nobody knows about does not work. How to arrange access without handing anything over today is covered in leaving your passwords.
- Review it yearly. Wallets change, exchanges disappear, balances move. An outdated overview inspires confidence and points at an empty spot.
Kinfolder was built for exactly this kind of information: an encrypted family folder recording what exists and where to find it, shared with one trusted person, only when it matters. Your other accounts and documents belong there too.
The heart of it
Inheriting crypto is legally unremarkable and practically unforgiving. The law decides who is entitled to the funds; whether that entitlement is worth anything depends entirely on what you wrote down while you could. An overview, a safe place for the keys, one person who knows where to look. It spares your heirs a loss that cannot be undone.
Frequently asked questions
Is crypto part of the estate?
Yes. Crypto is property and passes to heirs like savings or shares. In most countries heirs must also declare it for inheritance tax at its value on the date of death.
What happens to crypto if nobody has the keys?
With a self-custody wallet, the funds are permanently out of reach. No authority can restore access. With an exchange account, heirs can usually recover the balance with a death certificate and proof of inheritance.
How would the tax office know crypto exists?
Since 2026, crypto platforms in the EU report customer holdings to national tax authorities. Hiding it is no longer realistic, and heirs may learn crypto exists precisely because of such a report.
Should I put my seed phrase in my will?
No. A will is read by several people and often opened weeks after death. Store the keys separately in a safe place and record only where to find them in your overview.