Planning crypto inheritance means writing down what you own, who can reach it, and how they'll prove it's theirs — while you're still alive to explain it. Most people skip this because self-custody feels private, but privacy and permanence are different problems. Your seed phrase doesn't care that you're gone; it just stops moving.
Start With a Full Inventory, Not a Will
A will tells a court what you wanted. It doesn't tell your daughter which wallet holds the Bitcoin or how to open it. Before you touch any legal document, make a plain list.
What belongs on the list
Every wallet, exchange account, and hardware device you control. Not balances — locations. "Ledger Nano in the desk drawer, Bitcoin only" is more useful than a dollar figure that changes by Tuesday.
What to leave off
Never write seed phrases into the same document that lists your accounts. That's a single point of failure with a bow on it. Keep the map and the keys in separate places, and make sure your heir knows both exist.
Decide Who Actually Gets Access
Naming one person feels simple until that person is also grieving, traveling, or locked out of their own email. Two heirs who don't share a household is usually safer than one.
- Primary heir: the person who will act first, and who has your phone number saved.
- Backup heir: someone who can step in if the primary can't or won't.
- Technical helper: a friend who understands wallets but has no claim to the funds.
That third role matters more than people expect. A spouse who's never signed a transaction will need a translator, and hiring one after the fact is expensive and slow.
Pick a Method That Matches Your Risk Tolerance
There's no universal answer here. The right setup depends on how much you hold and how technical your heirs are.
| Method | Best for | Main drawback |
|---|---|---|
| Sealed letter with instructions | Small holdings, simple wallets | Physical theft or fire |
| Seed split across locations | Larger holdings, patient heirs | Requires coordination to reassemble |
| Multisig with a trusted co-signer | High value, technical users | Setup complexity, key loss risk |
| Hardware wallet with documented recovery | Most self-custody users | Depends on heir competence |
Where Trezor fits
A Trezor device keeps keys offline, and its recovery process is documented publicly, which helps heirs who've never used one. What it doesn't do is remember your PIN for you or explain itself to a stranger. You still have to write the handoff down.
The passphrase trap
If you use a hidden wallet with an extra passphrase, your heirs get nothing without it. A Trezor recovered with just the seed phrase shows an empty wallet. That's not a bug — it's the design — but it's also the most common way families lose access.
Write Instructions a Non-Crypto Person Can Follow
Test your instructions on someone who doesn't know what a blockchain is. Hand them the document and watch where they get stuck. You'll learn more in ten minutes than in ten hours of theorizing.
A real scenario
One holder kept 0.6 BTC on a Trezor and told his brother "the seed is in the safe." When he passed, the brother found the safe, found a seed phrase, and restored an empty wallet — because the real funds sat behind a passphrase stored in a separate location nobody had mentioned. Three years of back-and-forth later, a portion was recovered. The rest wasn't. The technical setup was fine. The handoff wasn't.
What good instructions include
- Device model and where it physically is.
- Which wallet software and which accounts matter.
- Where the seed backup lives, described without revealing it.
- Whether a passphrase exists, and where its hint lives.
- A first step that doesn't require sending anything anywhere.
Coordinate With Your Estate Plan
Your lawyer needs to know crypto exists, even if they never touch a key. Some jurisdictions treat digital assets differently from bank accounts, and probate rules vary. Tell your attorney the assets exist, keep the technical details out of the public filing, and confirm your executor knows who the technical helper is.
Review the whole plan once a year. Wallets change. People change. A plan from 2019 is a plan for a different life.
Frequently asked questions
Should I put my seed phrase in my will?
No. Wills become public documents in many places, and anyone who reads it could drain the wallet before your heirs even open the file. Put a reference in the will — something like "digital assets exist, contact this person" — and keep the actual recovery material somewhere separate and secured.
Can my exchange account just transfer to my family?
Usually not automatically. Most exchanges require a formal process, and some accounts are simply closed rather than inherited. Check the platform's policy while you're alive, and don't assume a beneficiary designation exists unless you've actually set one.
How do I test my plan without exposing everything?
Walk your heir through the process with a small test wallet holding a trivial amount. They practice the mechanics, you confirm the instructions make sense, and nothing valuable is at risk. Repeat when you change devices.
Open a document right now and write the first line: which device, which room, which person. That's the whole plan started.