Cryptocurrency ownership is non-custodial by design: if you hold the private keys, you control the coins. That means traditional estate paths (a will that hands over a bank account) don’t translate cleanly. What happens to your crypto if heirs don’t know there is a hardware wallet, or if the seed phrase is lost? These are real problems.
Think of a seed phrase like the master key to a safe deposit box. Lose the key, and the box is inaccessible. I’ve been testing hardware wallets since the 2017–2018 cycle, and what I’ve found is that most failures in transfers to heirs are organizational, not technical. Short sentence.
And that’s where planning helps.
A robust plan includes both technical steps and legal documentation. At minimum, prepare:
Store the non-secret parts of this inventory with your executor. Keep secret material (seed phrase, passphrase) physically secure and separate.
Here’s a concise comparison to help decide which approach fits your situation.
| Strategy | Recovery Ease for Heirs | Security Against Theft | Complexity | Who it’s best for |
|---|---|---|---|---|
| Single-sig (seed phrase only) | High (if seed is accessible) | Moderate | Low | Small holdings; heirs comfortable with simple restore |
| Single-sig + passphrase | Low (heirs must know passphrase) | High | Low-medium | High-value holdings for tech-savvy owners (risk: passphrase lost) |
| Multisig (distributed signers) | Medium (requires coordination) | Very high | High | Large estates; high-security setups; families with access to trusted co-signers |
| Custodial (exchange or trust) | High | Variable (depends on custodian) | Low | Users who prefer legal simplicity and professional management |
Pros and cons exist for each approach. For example, multisig increases security but you must plan how signers are selected and replaced. See more on multisig setups.
But remember: there is no one-size-fits-all.
A passphrase acts as a 25th word on top of a BIP‑39 seed phrase. It creates an additional private key layer that the hardware wallet never stores. This is powerful for security, because even someone with the seed phrase cannot access funds without the passphrase.
But the catch is simple: if the passphrase is lost or unknown, funds are irrecoverable. I’ve seen users secure their passphrase in a safety deposit box or split it using Shamir/SLIP‑39 shares so heirs can reconstruct it. See shamir and SLIP‑39 guide and passphrase usage risks.
Options to make passphrase use estate-friendly:
Choose with care.
Multisig splits signing power across multiple keys and people. For inheritance, multisig allows you to decentralize access (for instance, 2-of-3 signers could be the owner, a spouse, and a trusted attorney). This reduces single-point-of-failure risk.
That said, multisig adds ongoing operational work: firmware compatibility, third-party wallet support, and key rotation procedures. In my experience, families that plan and rehearse the multisig restore process fare far better than those that do not. Rehearse in a low-value testnet first.
See multisig setups for detailed walkthroughs.
A will can name the executor, but a trust can provide faster access and avoid probate delays. Questions to resolve with counsel include:
Do not write your seed phrase in the will. Wills become public during probate in many jurisdictions. Instead, reference a separate location for the recovery kit.
And consult an attorney experienced in digital assets.
But the biggest mistake is assuming heirs will intuitively know what to do. Train them or document the process clearly.
Q: Can my heirs recover crypto if the device breaks? A: Yes, if they have the seed phrase (and passphrase if used). Test a recovery now and record the process. See restore and recovery.
Q: What happens if the hardware wallet company goes bankrupt? A: Since crypto is non‑custodial, your private keys remain usable with compatible wallets that support the same standards (BIP‑39, derivation paths, etc.). Document compatibility and include links to alternatives. See company bankruptcy and business risk.
Q: Is Bluetooth safe for a hardware wallet? A: Bluetooth introduces more attack surface than USB or air‑gapped workflows. For estate planning, err on the side of simple, documented restoration paths (wired or air‑gapped). See connections: usb, bluetooth, nfc and air-gapped signing.
Q: Can I leave crypto in a will verbatim? A: Don’t write the seed phrase into a will. Use legal documents to reference a separate recovery kit location.
Passing crypto to heirs requires both technical foresight and legal planning. Start by making an inventory, testing recovery, and deciding whether to use a passphrase or multisig. I recommend creating a clear recovery kit (inventory, hardware info, recovery test) and discussing the plan with your executor or a trusted attorney.
Want to learn more? Read our guides on seed phrase basics, backup options with metal plates and SLIP‑39, and practical multisig setups. If you prefer hands-on walkthroughs, check restore and recovery and firmware updates and verification before you finalize any legal documents.
Plan carefully. Test often. And keep your documentation accessible to the right people.