Concept
Crypto breaks the familiar logic of inheritance: the asset exists and is visible on-chain, yet without the private key there is no way to reach it. Heirs can hold indisputable title to a bitcoin balance and still lose it forever — simply because they do not know where the key is kept. There is no bank you can walk into with a death certificate, and no "reset password" button.
Crypto inheritance comes down to access. Title to the asset counts for nothing if the wallet's private key or seed phrase is lost: the coins stay on-chain, but they can no longer be moved.
Why This Became a Problem
The scale shows in the network's own statistics: by various estimates, between 1.8 and 3.7 million bitcoin — roughly 10–18% of all coins ever issued — are considered permanently lost, and the main reason is precisely the loss of keys. Some of those coins belonged to early holders who never thought of a wallet as something to bequeath; others vanished together with owners who left neither keys nor instructions.
The loudest case is the Canadian exchange QuadrigaCX. After founder Gerald Cotten died in December 2018, the platform said that only he held the keys to the cold wallets, and more than 76,000 clients were left owed a combined C$215 million. A later investigation found that a significant part of the money had already been withdrawn during his lifetime and that the exchange itself had operated like a pyramid — but as a symbol of "single point of failure" risk the story has become a textbook example. At an everyday level the risk is the same: the programmer Stefan Thomas has for years been unable to recall the password to an encrypted drive holding 7,002 BTC.
Two Tasks: Title and Access
Legally, in most countries crypto is property: it falls into the estate, passes by will or by law, and is taxed like any ordinary asset. But a right on paper only works together with technical access to the wallet. Access without formal title is dangerous too: an heir who receives the key "informally, within the family" risks accusations of misappropriation, while whoever holds the keys faces claims from the other beneficiaries.
How Access Is Transferred
The approaches range from multisignature (multisig), where the keys are split among several trusted people, to a "dead-man's switch" timer that opens access after a long silence from the owner, and custodian services. One rule overrides the rest: the seed phrase must never be written into the text of the will — once probate opens, the will becomes a public document and anyone can read the key.
Legal Status and Probate
Most countries' tax authorities treat cryptocurrency as property. In the United States this is fixed by IRS guidance (Notice 2014-21); in Russia, by Federal Law No. 418-FZ, under which digital currency has been treated as property for the purposes of the Tax Code since 1 January 2025 (the rule now sits in Article 11(2) of the Code). Property status means crypto falls into the estate and passes to heirs under the general rules — with all the usual probate timelines and formalities.
For exchange-held (custodial) assets there is a procedure. In the United States, inheritance access is governed by the Revised Uniform Fiduciary Access to Digital Assets Act (RUFADAA), enacted in 46 states: it obliges a custodian, including a crypto exchange, to honour a lawful request from an executor. For a self-custodied wallet there is no procedure — the law grants the right but does not hand over the key. A separate difficulty arises when wallets and accounts are scattered across jurisdictions and parallel wills are opened for them (see Multi-Jurisdiction Wills).
The crypto-specific part of an estate turns on five questions that ordinary succession law answers for houses and shares but not yet for tokens: whether the asset is in the estate at all, what basis the heir takes, whether a custodian can be compelled to open the account, what connects the asset to a taxing jurisdiction, and whether a statute has been written for digital assets. The rates themselves are a separate matter and sit on the inheritance tax map; the table below carries only the crypto-specific layer.
| Jurisdiction | In the estate | Basis on death | Access at a custodian | Connecting factor for the charge | Digital-asset statute | Forced heirship |
|---|---|---|---|---|---|---|
| USA | yes, property | step-up to the date-of-death value, §1014 | statutory duty to disclose to a fiduciary | no published situs rule for tokens | RUFADAA in 46 states; Notice 2014-21 | none, except a spousal elective share |
| UK | yes, personal property | personal representatives acquire at market value; no CGT on death | no statutory route; custodian terms plus a grant | situs by residence of the beneficial owner, CRYPTO22600; worldwide charge for a long-term UK resident, IHTA s. 6A | Property (Digital Assets etc) Act 2025, in force 2 December 2025 | none; family provision claims instead |
| Germany | yes, universal succession under §1922 BGB | the heir takes the decedent's acquisition and holding period, §23(1) EStG | the estate succeeds to the account contract, BGH III ZR 183/17 | residence of the decedent or the heir, not the asset | none crypto-specific; the 2025 BMF letter is silent on death | Pflichtteil: half the intestate share |
| Switzerland | yes | no charge on private gains, so no basis question | custodian terms plus a certificate of inheritance | last domicile of the deceased; cantonal charge | DLT Act 2021, for register-based rights | réserve, reformed in 2023 |
| France | yes, actif numérique | not published for tokens | no statutory route | residence of the deceased or the heir, art. 750 ter CGI | definition in art. L54-10-1 CMF; no succession statute | réserve héréditaire |
| Italy | yes, cripto-attività | not published for tokens | no statutory route | residence of the deceased for worldwide assets | tax definition only; no succession statute | quota di legittima |
| Spain | yes, moneda virtual | not published for tokens | no statutory route | residence of the heir; Spanish-situs assets otherwise | reporting definition and Modelo 721; no succession statute | two thirds, with regional variation |
| Portugal | yes, cryptoasset | not published for tokens | no statutory route | Portuguese-situs assets; spouse and descendants exempt | definition in the CIRS; no succession statute | legítima |
| UAE | yes | no charge on gains | custodian terms plus a court order or a DIFC will | no inheritance tax | VARA rules; DIFC and ADGM digital-asset frameworks | Sharia shares by default; a DIFC will can displace them for non-Muslims |
| Singapore | yes | no charge on gains | custodian terms plus a grant of probate | no estate duty since 2008 | Payment Services Act; no succession statute | none for non-Muslims; faraid for Muslim estates |
| Hong Kong | yes | no charge on gains | custodian terms plus a grant of probate | no estate duty since 2006 | AMLO licensing regime; no succession statute | none; statutory family provision instead |
| Russia | yes; property for tax purposes since 01.01.2025 | not published; a later sale is taxed at 13–15% | a notary's request; no statutory route to keys | no inheritance tax | 259-FZ and 418-FZ | a compulsory share for minor or disabled children, a disabled spouse or parents and disabled dependants, art. 1149 Civil Code |
Three columns of that table carry most of the risk. The first is basis. The United States hands the heir a clean slate: §1014 lifts the tax cost to the date-of-death value, so a position bought at $2,000 and inherited at $100,000 carries no latent gain at all. Germany does the opposite by statute — §23(1) EStG attributes the predecessor's acquisition to a gratuitous successor, which means the heir inherits the purchase price and the twelve-month clock together, and a position the decedent had held for more than a year can be sold tax-free on the day after probate. Four European jurisdictions have published nothing crypto-specific on the point, which is itself the planning fact: the acquisition value the heir will use has to be documented at the moment of death rather than argued about later.
The second is the connecting factor, where the intuition that an asset sits "where the wallet is" fails in both directions. HMRC locates an exchange token by the residence of its beneficial owner (CRYPTO22600), so a UK resident's tokens are UK-situs wherever the keys are kept, while a non-resident's tokens are situated abroad and stay outside the UK charge only if that person is not a long-term UK resident — someone who was UK resident for 10 of the previous 20 tax years remains within the worldwide charge for three to ten years after leaving (IHTA 1984 ss. 6(1), 6A). Germany, France, Italy and Spain look at the residence of the people rather than the location of the asset. The United States has no published situs rule for crypto at all — on the analysis published by Withers, there is no specific rule or guidance for determining the situs of crypto assets for US estate tax purposes, which leaves a non-resident holding tokens issued by a US sponsor without an answer to the one question that decides a 40% charge.
The third is access, and here the statutes are thin everywhere except the United States. RUFADAA turns an executor's request into a duty on the custodian; the UK's Property (Digital Assets etc) Act 2025, in force since 2 December 2025, settles that a token can be the object of property rights at all, without saying anything about who must hand over an account. Germany reached a similar place through litigation rather than legislation when the Bundesgerichtshof held that an account contract passes to the estate. Everywhere else the heir's route runs through the custodian's own terms, which is an argument for choosing the custodian with the estate in mind. Where the reserved share of the estate interacts with all of this, the shares themselves are set out in forced heirship.
Custodial and Inheritance Services
Between "everything on the exchange" and "the key only in your head" lies a whole spectrum of solutions. Exchanges and qualified custodians (Coinbase, Kraken, BitGo, Anchorage) take custody on themselves and offer heirs a clear procedure, but add counterparty risk. Collaborative-custody services — Casa, Unchained, Nunchuk — distribute multisig keys among the owner, the service and a trusted person (a role close to that of a protector in a trust, see Trustee and Protector), so no single party moves the funds alone and no single lost key is fatal. Hardware-wallet makers add "inheritance" kits with backup keys. Seven routes are in practical use, and they differ less in technology than in what the heir must physically possess on the day.
| Route | Who holds the keys | What the heir needs | Counterparty risk | Legal standing | Published price |
|---|---|---|---|---|---|
| Qualified custodian | the custodian, in cold storage | a grant of probate and the custodian's own verification | full: platform, freeze, insolvency | strongest — a fiduciary, and in the US a statutory duty to disclose | Fidelity 0.35% a year plus 0.1% per trade; Coinbase Custody 0.50% with a $10k setup fee; Gemini 0.40%; BitGo 0.05–0.15% |
| Collaborative custody, 2-of-3 or 3-of-5 (Casa) | owner, the service and a trusted person | the plan's inheritance procedure; enhanced verification on the higher tiers | partial — the service cannot move funds alone | contractual: the procedure binds the service, not a court | $250 a year for a three-key vault (Standard); $2,100 a year for a five-key vault (Premium); inheritance included in every plan |
| Collaborative custody with a trust wrapper (Unchained) | owner and the service, with a trust vault option | trustee authority plus the vault keys | partial | contractual, plus the trustee's fiduciary authority in a trust vault | $250 a year per vault; the inheritance programme $4,000 in year one and $4,500 on renewal |
| Timelocked inheritance (Nunchuk) | owner and the service; an inheritance key is destined for the heir | the magic phrase plus either the backup password or the inheritance-key seed | partial; the autonomous option runs on an on-chain timelock | contractual; the timelock executes whatever the documents later say | $120 a year for 2-of-3; $480 for 2-of-4 with inheritance; $2,100 for 3-of-5; 0.3% of the balance if the subscription has lapsed at the claim |
| Hardware inheritance kit | the owner alone; backup shares in sealed storage | the physical shares and the device instructions | none beyond the manufacturer | none of its own — the will or the structure must carry the authority | the cost of the devices |
| Dead-man switch outside a custodian | the owner alone until the timer fires | the trigger to fail and the stored instruction to survive | whoever holds the trigger | none of its own; a transfer it fires can be attacked by other heirs | not published for the category |
| Family multisig with no service | family members only | a quorum of relatives able and willing to sign | none | none of its own; a quorum can act against the will | the cost of the devices |
The table sorts the routes by one question: what is the smallest set of things the heir must hold for the asset to move. A qualified custodian reduces it to a court document, which is why it is the only route where a lawyer can promise an outcome — and the only route that puts the whole balance behind one counterparty. Collaborative custody keeps the counterparty but takes away its ability to act alone, and the published tariffs are modest against the sums involved: three-key coverage runs at $250 a year at Casa and $120 at Nunchuk, and Nunchuk's inheritance tier at $480 a year is the cheapest arrangement in the table that hands the heir a defined claim procedure. At the other end, a hardware kit and a family multisig cost almost nothing and carry no legal standing at all: they move the whole burden onto the will or the structure, and they fail in exactly the case they were built for if the quorum of relatives is unavailable or in dispute.
Structuring
For large portfolios, crypto is increasingly "wrapped" into a foundation, trust or company: this gives clear key management, continuity and a defined tax and legal status instead of a scatter of wallets across different exchanges. A classic trust (settlor — trustee — beneficiary) works, as does a personal foundation, or an asset protection trust to shield assets from creditors.
The wrapper only works where a professional trustee will actually accept the holding, and that is a question of jurisdiction rather than of drafting. A trustee's answer is almost never "we will hold the keys": it is "we will contract with a licensed custodian, and the deed must say who may instruct a transfer". Whether such a custodian exists locally is what separates the jurisdictions.
Taxes on Inheritance
Inheriting crypto itself is not taxed in Russia — inheritances are exempt from personal income tax (NDFL), except for an heir who held foreign-agent status on any day of the tax year in which the inheritance was received (Tax Code art. 217(18), as amended by Federal Law No. 425-FZ of 28 November 2025). Tax arises later, on sale: from 2025, income from disposing of digital currency is subject to NDFL at a rate of 13–15%. If the crypto is held through a foreign company or foundation, CFC rules kick in, with their own logic for declaring undistributed profit (see Trusts and CFC and CFC).
In the United States, inherited crypto gets a step-up in basis: its "tax cost" for the heir is raised to market value at the date of death, and the gain accumulated during the owner's lifetime escapes capital gains tax. But large estates fall under the federal estate tax, from which the first $15 million is exempt starting in 2026. Volatility adds complexity: the coin price at the date of death, on which the tax is calculated, can diverge sharply from the price at a later sale.
Large crypto portfolios are increasingly held through a foundation — see Personal and Inheritance Foundation.
Q/A
Is naming a crypto wallet in the will enough?
No. A will establishes the heir’s legal entitlement but does not create technical access to a self-custody wallet. A current asset inventory, legally aligned instructions, a tested recovery route and a person able to start the process are also needed, without giving anyone unilateral control in advance.
Should the seed phrase be written directly into the will?
No. Executors and parties to the estate process receive the will, and in some systems it becomes public after probate, so placing the secret in its text creates an immediate theft risk. The will should point to a separate instruction; the seed phrase itself belongs in a protected, regularly tested access arrangement.
Is an exchange easier for heirs than self-custody?
Usually, in procedural terms: a custodian can verify the executor’s authority and restore access under its rules. The price is platform, freeze and insolvency risk. Self-custody removes that counterparty, but without the keys and a tested plan neither a death certificate nor a court order can recreate the asset access.
How should multisig remove a single point of failure?
Use a signing threshold under which one lost key does not block the asset but no holder can move it alone. Separate keys across people and places, document replacement and recovery, and test the route with a small transaction; align the technical design with the will and the executor’s legal authority.
When is a foundation or trust better than a personal wallet?
For a large portfolio, several heirs or assets spread across jurisdictions, a structure can provide continuing rules for key management and succession. But the foundation, trust or company must legally own the relevant wallets and accounts; authority, tax, reporting and the custody arrangement’s actual operation still need separate review.
Does inherited crypto get a step-up in basis everywhere?
No, and Germany is the clearest counter-example. §1014 lifts the US heir's tax cost to the date-of-death value, and UK personal representatives acquire at market value with no charge arising on death. §23(1) EStG attributes the decedent's acquisition to a gratuitous successor, so a German heir inherits the purchase price and the twelve-month clock together. France, Italy, Spain and Portugal have published nothing crypto-specific, which makes documenting the acquisition value at the date of death part of the estate work rather than an afterthought.
Are a non-resident's tokens inside the US estate tax net?
There is no published answer. On the analysis published by Withers, no specific rule or guidance determines the situs of crypto assets for US federal estate tax purposes, so a non-resident holder falls back on the general catch-all for intangibles, which turns on whether the right is issued by or enforceable against a US person. Tokens from a US-based sponsor therefore carry an unresolved exposure that the general $60,000 non-resident threshold and the 40% rate make material.
Which access route gives an heir the strongest legal claim?
A qualified custodian in a RUFADAA state, because the executor's request becomes a duty on the custodian rather than a request under the custodian's own terms. Collaborative custody with a trust vault comes next, since the trustee's fiduciary authority sits behind the keys. A hardware kit, a dead-man switch and a family multisig carry no legal standing of their own and depend entirely on the will or the structure they are attached to.