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Crypto inheritance has one property that makes it harder than passing down a bank account or brokerage IRA: there is no institution to call. If your heirs don't have your seed phrase — or a documented way to reconstruct it — your Bitcoin isn't “processed” through probate like other assets, it's just gone. Blockchain transactions are irreversible and no company holds a master key to recover a lost wallet. This guide covers the three real approaches people use in 2026: multisig custody services built for inheritance, legal instruments (trusts and letters of instruction), and the DIY route — plus the mistakes that quietly ruin all three.
Quick answer: the right Bitcoin & crypto inheritance plan depends on how you hold your coins
There is no single “crypto will.” A sound crypto inheritance plan does two things at once: it makes sure your heirs can reach the coins, without making it so easy that anyone else can while you're alive. Match the method to your situation:
- You hold a meaningful stack in self-custody → a collaborative-multisig inheritance service (Casa, Unchained, Nunchuk). Your heir holds one key; nobody — not even the service — can move funds alone. The gold standard, and the focus of this guide.
- You want “set it and forget it” with a legal trigger → a dead-man's-switch inheritance app like Vault12 Guard: a trusted-Guardian network releases access only after a verified death/incapacity trigger.
- You'd rather it run through the traditional legal system → a trust + a sealed letter of instruction, so a crypto-savvy executor or trustee inherits the location and the method, never the seed phrase itself.
- You mostly hold on an exchange → the exchange's own estate/deceased-account process (death certificate + probate letters) is the simplest path — the trade-off is you never had full self-custody to begin with.
The one rule that overrides all of them: never write your seed phrase or private key into your will. A will becomes a public court record in probate — anyone could read it and drain your wallet. Keep the secret separate from the instructions. The rest of this guide shows exactly how.
Why Crypto Inheritance Differs From Traditional Estate Planning
A will or trust normally names an asset and a custodian (a bank, a brokerage) executes the transfer once probate clears. Crypto held in self-custody has no such custodian — the “account” is really just whoever controls the private keys. That means:
- You cannot put a seed phrase directly in a will. Wills become public record during probate in most states, so a seed phrase written into one is a security disclosure, not a protection.
- The device is replaceable; the seed phrase is the asset. Losing a hardware wallet is recoverable if the seed phrase is backed up. Losing the seed phrase is not recoverable, regardless of which device or exchange you used.
- Exchange-held crypto (Coinbase, Kraken) is closer to a normal financial account — it can be named as a beneficiary or transferred through the exchange's own process, similar to a brokerage account. Self-custody wallets have no equivalent process.
Multisig Inheritance Services: Casa vs. Unchained Capital
For self-custody holders, the two established collaborative-custody providers built specifically for this problem are Casa and Unchained Capital. Both use multisig (multiple keys required to move funds) so no single lost or stolen key empties the wallet — and both now build inheritance directly into the service rather than treating it as an afterthought.
| Service | Structure | Price | Inheritance Process |
|---|---|---|---|
| Casa | 2-of-3 (Standard) or 3-of-5 (Premium) multisig; you hold most keys, Casa holds a recovery key | Standard around $21/mo (around $250/yr); Premium around $175/mo (around $2,100/yr) | Heir contacts Casa with a death certificate, completes a waiting period, recovers funds under video-verified support |
| Unchained Capital | 2-of-3 collaborative custody; you hold 2 keys, Unchained holds 1 | Vault around $250/yr; Concierge onboarding around $1,200 one-time | Inheritance protocol documented at setup; heirs work through Unchained's legal/key-recovery process, optionally paired with an attorney |
Neither service can unilaterally move your funds on its own — that's the point of multisig — but both close the gap where a self-custody holder's death would otherwise mean permanently lost coins. Casa's Premium tier is the more expensive, higher-redundancy option (5 total keys); Unchained's Concierge tier adds white-glove setup for a one-time fee rather than a higher recurring cost.
Crypto Inheritance Methods Compared: Multisig, Dead-Man's-Switch, Custodian & Backup Handoff
The Casa-vs-Unchained choice above is really a choice within one method — collaborative multisig. Step back and there are four broad ways to pass on Bitcoin and crypto, each with a different security-vs-simplicity trade-off:
| Inheritance method | How your heir gets access | Security while you're alive | Rough cost (verified 2026) | Probate exposure | Best for |
|---|---|---|---|---|---|
| Collaborative multisig service (Casa, Unchained, Nunchuk) | Heir already holds 1 of 3 keys; after your death they combine it with the service's recovery key (2-of-3) | Strongest — no single party (including the service) can move funds alone | Casa's dedicated inheritance plan runs ~$250/year; multisig plans tiered by stack size | Low — keys pass outside the will | Serious self-custody holders who want the gold standard |
| Dead-man's-switch inheritance app (Vault12 Guard) | You designate a beneficiary; a legally-defined trigger (death/incapacity) plus approval from a quorum of your trusted “Guardians” unlocks and transfers the vault | Strong — secret is split across a peer-to-peer Guardian network, never on a server or the cloud | Freemium; paid inheritance tiers (confirm current pricing on vault12.com before relying on a number) | Low — release is app-governed, not court-governed | Holders who want automation + a defined trigger without running a multisig themselves |
| Professional / qualified custodian or exchange estate process | Heir presents a death certificate + probate letters (executor authority) to the custodian, who releases the assets | Weakest self-sovereignty — you're trusting a third party to hold keys | Custody fees vary; exchange deceased-account processes are free but slow | Higher — tied to probate + custodian's own process | Holders who prioritise simplicity over self-custody, or large institutional holdings |
| Legal trust + sealed letter of instruction | Trustee inherits the location and method (where the hardware wallet is, how to reach it) — never the seed phrase in the document itself | Depends entirely on how the physical secret is stored; the plan just routes the executor to it | Attorney/trust-setup fees (one-time + maintenance) | Trust generally avoids public probate (a key advantage over a will) | Holders who want the traditional legal system, privacy, and a named fiduciary |
| Paper / metal backup handoff to executor | Executor physically retrieves a sealed seed backup (paper or steel plate) you've pre-positioned | Weakest — a single point of failure; anyone who finds it has everything | Cost of a steel backup plate only | Depends on where it's stored | Small holdings, or a simple fallback layer alongside a real plan above |
Most robust plans combine two of these — e.g. a multisig service for the coins plus a trust + letter of instruction for the legal wrapper — rather than betting everything on one.
Legal Instruments: Trusts and Letters of Instruction
A revocable living trust is generally the better legal vehicle for crypto specifically, because assets titled in the trust's name pass to beneficiaries without going through probate — avoiding both the delay and the public record a will creates. Since blockchain assets can't be “retitled” into a trust the way a brokerage account can, the trust instead holds (or documents access to) the private keys/seed phrase rather than the coins themselves.
The common pattern estate attorneys use:
- Fund the trust naming the cryptocurrency holdings as trust property in the trust document.
- Write a separate, sealed letter of instruction — held by the trustee or estate attorney, not filed with the will — that documents where the seed phrase lives, how it's split (if using multisig or a secret-sharing scheme), and step-by-step recovery instructions.
- Never put the seed phrase itself in the will. Keep it in the sealed letter, a safe deposit box, or a multisig arrangement your executor already knows how to access.
Work with an attorney who has specifically handled digital-asset estate planning — general estate attorneys often don't know how to document trust ownership of crypto correctly, and a trust that names “cryptocurrency” without a working access plan behind it is just as useless to heirs as no plan at all.
How to Put Bitcoin & Crypto in Your Will or Trust: a Step-by-Step Guide
- Inventory what you hold and where — a private list of wallets, exchanges, and hardware devices (assets and locations only, no seed phrases or keys). This is the “what and where.”
- Decide the custody method first (from the table above). The legal wrapper routes your heir to the coins; the method decides how they actually take control. Do this before you draft anything.
- Never put the seed phrase or private key in the will. A will is filed with the court and becomes public record in probate — anyone could read it and steal the funds. This is the single most common way crypto inheritance goes to zero.
- Separate the secret from the instructions. Keep the “how” — the seed phrase — in a physically secured location you control and update. Keep the “what and where” in a sealed letter of instruction that your estate plan references but does not contain.
- Use a trust for privacy and to skip probate. A revocable living trust generally keeps your crypto holdings out of the public probate record (a will does not) and lets a named trustee act without court delay.
- Explicitly authorise digital-asset access under RUFADAA. Estate documents must grant your fiduciary authority over digital assets, or an exchange/custodian can legally refuse your executor. Ask your attorney to include RUFADAA-compliant language.
- Name a crypto-capable executor or trustee (or a professional digital-asset fiduciary). Traditional executors often have no idea how to operate a hardware wallet or a multisig quorum.
- Rehearse and update it. Have your heir/trustee confirm they can locate and follow the instructions, and revisit the plan whenever you change wallets, services, or holdings.
Documenting Wallet Access Without Compromising Security
The tension in crypto inheritance is that the same seed phrase your heirs need is the thing a thief would also want. Practical approaches people actually use:
- Split custody with multisig (Casa/Unchained above) so no single document or person holds full access.
- Shamir's Secret Sharing / multi-part seed backup — splitting a seed phrase across 2-3 physical locations (e.g., steel backup plates like Cryptosteel or Billfodl) so no single location is a complete point of failure.
- A sealed letter of instruction with an attorney or trustee, opened only under a documented process (death certificate + waiting period), mirroring how Casa and Unchained structure their own inheritance protocols.
Which Crypto Succession Plan Fits Your Situation
- Actively holding on a hardware wallet, want a done-for-you inheritance process: Casa or Unchained — pick Casa if you want the higher-redundancy 3-of-5 option, Unchained if you want a lower ongoing cost with a one-time white-glove setup.
- Significant holdings, want it integrated with the rest of your estate: revocable living trust + sealed letter of instruction, set up with a digital-asset estate attorney.
- Holdings mostly on an exchange (Coinbase, Kraken): treat it closer to a normal financial account — check the exchange's own beneficiary/inheritance documentation process first, since it doesn't require multisig or a trust to solve the same problem.
- Smaller holdings, DIY comfortable: steel seed-phrase backups split across locations, documented in a letter your executor knows exists (even if they don't have the contents).
Editor’s pick: Ledger hardware wallet cold storage
Related reading: Kraken Review 2026
FAQ
What happens to my crypto if I die and no one has my seed phrase?
It's permanently inaccessible. There is no password reset, no customer support line, and no master key — this is the single most important fact in crypto inheritance planning, and the reason dedicated services like Casa and Unchained exist.
Should I put my seed phrase in my will?
No. Wills typically become public record during probate. Keep the seed phrase (or instructions to reconstruct it) in a sealed letter of instruction held by a trustee/attorney, or split across a multisig setup instead.
Is crypto on an exchange like Coinbase easier to pass on than self-custody crypto?
Generally yes — exchange-held crypto can often use a beneficiary or account-transfer process similar to a brokerage account. Self-custody wallets have no equivalent built-in process, which is why multisig inheritance services exist.
How much does a multisig inheritance service actually cost?
Casa's Standard plan runs around $21/month (around $250/year); Unchained's Vault is around $250/year with an optional one-time around $1,200 Concierge onboarding fee. Both are ongoing costs, not one-time purchases.
Do I need a crypto will?
Not a separate “crypto will” as such — but yes, your crypto must be explicitly covered by your estate plan. The safest structure is a trust or will that references your holdings and authorises a fiduciary under RUFADAA, paired with a sealed letter of instruction and your chosen custody method. Never put the actual keys in the document itself.
What happens to my Bitcoin if I die without a plan?
If no one can reach your keys, the coins are lost forever — there's no issuer or bank to reset access. Estimates put millions of BTC already permanently lost this way. A plan is the only thing standing between your stack and the crypto graveyard.
How do I set up a Bitcoin inheritance plan?
Pick a custody method (collaborative multisig, a dead-man's-switch app, a custodian, or a trust + secured backup), separate the secret from the instructions, wrap it in a trust with RUFADAA authority, name a crypto-capable trustee, and rehearse it. The step-by-step guide above walks through each stage.
Can my family recover my crypto if I only hold it in self-custody?
Only if you've set it up so they can. Self-custody means you are the bank, so recovery depends entirely on a plan — a multisig key in your heir's hands, or a documented, RUFADAA-authorised route to a secured backup. With no plan, self-custody funds are typically unrecoverable.