If you got hit by a bus tomorrow, could your family access your Bitcoin? For most holders, the honest answer is no. Your spouse, your kids, your parents wouldn't know where to start. No password reset button. No bank to call. No customer support line. Just a hardware wallet they've never seen and a seed phrase they wouldn't recognize.
That's not a hypothetical problem. Between 3 and 6 million Bitcoin are permanently lost. A big chunk of that belongs to people who died without telling anyone how to recover their coins. At current prices, we're talking about hundreds of billions of dollars, gone forever because someone assumed they'd get around to writing a plan.
This guide walks you through everything: why Bitcoin inheritance is different from traditional assets, the technical solutions available (from simple sealed envelopes to advanced multisig setups), the legal frameworks that matter, and a step-by-step plan you can finish this weekend. Your Bitcoin survived the bear market. Don't let it die with you.
Why Bitcoin Inheritance Is Different
When someone dies with a bank account, the process is straightforward. The executor shows a death certificate. The bank transfers the money. Done. Messy sometimes, sure, but the system is built for this.
Bitcoin doesn't work that way. There's no institution holding your funds. Nobody can reverse a transaction. Nobody can reset your password. The entire design of Bitcoin is built around one idea: whoever holds the private keys controls the coins. Period. That's what makes it work. It's also what makes inheritance so tricky.
Traditional assets have custodians. Banks, brokerages, insurance companies all have legal processes for transferring assets after death. Bitcoin in self-custody has no custodian. If your heirs don't have the keys, no court order on earth can move those coins. The blockchain doesn't care about death certificates.
Here's the other thing people miss: your heirs probably don't know anything about Bitcoin. They may not know what a seed phrase is. They may not know what a hardware wallet looks like. They certainly don't know the difference between a Trezor and a Ledger. Your inheritance plan needs to work for someone with zero technical knowledge. Otherwise it's not really a plan at all.
The Bus Factor: What Happens If You Die Tomorrow
Software developers use a term called the "bus factor." It means: how many people on a team would need to get hit by a bus before the project falls apart? For most Bitcoin holders, the bus factor is one. Just you.
Think about your setup right now. Your hardware wallet sits in a drawer. Your seed phrase is in a safe, or maybe still on that piece of paper in your desk. Your passphrase? In your head. If you dropped dead right now, what would your partner find? A weird USB device and 24 random words they don't understand.
The numbers tell a brutal story. Chainalysis estimates that roughly 3.7 million BTC sit in wallets that haven't moved in over a decade. Not all of that belongs to dead people, some holders are just patient. But a meaningful chunk of it is permanently locked away because the owner died and nobody else had the keys. At $80,000 per coin, that's nearly $300 billion sitting in digital limbo.
The fix isn't complicated. It just requires you to sit down, make some decisions, and write things down. Most people can set up a solid inheritance plan in a single afternoon. The hard part is convincing yourself to actually do it.
Technical Solutions for Bitcoin Inheritance
There's no single "right" approach here. The best setup depends on the size of your stack, your technical comfort, and how much you trust the people around you. Here are the main options, ranked from simplest to most advanced.
The Sealed Envelope: Simple and Effective
Start here if you're holding a smaller amount and want something that works today. Write a detailed letter explaining what Bitcoin is, that you own some, where your seed phrase and hardware wallet are stored, and exactly how to recover the funds. Put it in a tamper-evident envelope. Store it in a bank safe deposit box or with an attorney.
It's low-tech, and that's the point. No apps to maintain. No subscriptions. No services that might shut down in ten years. The downside? If someone opens that envelope, they have everything they need to steal your coins. That's why the storage location matters so much. A bank vault works. A filing cabinet at home does not.
Multisig with a Collaborative Custody Provider
This is the option we recommend for most people with meaningful holdings. In a multisig setup, multiple keys are required to move your Bitcoin. Typically 2-of-3: you hold two keys, and a provider like Casa or Unchained holds the third.
When you die, your heirs contact the provider with a death certificate and proper identification. The provider then helps them co-sign a transaction using the company's key plus one of yours (which your heirs locate through your instructions). Your family never needs to understand how multisig works. They just follow the provider's process. It's like having a safety net that catches people who don't even know they're falling.
Shamir's Secret Sharing (Seed Splitting)
Shamir's Secret Sharing, or SSS, splits your seed into multiple shares. You choose how many total shares to create and how many are needed to reconstruct the seed. A common setup is 3-of-5: create five shares, and any three can rebuild the original seed.
Trezor Model T supports this natively through the SLIP-39 standard. You can distribute shares to family members, attorneys, and safe deposit boxes. No single person holds enough pieces to access your Bitcoin alone. But if two share-holders collude, that's still not enough in a 3-of-5 scheme. Solid math, solid security.
The downside: it's more complex to set up and explain to heirs. If you go this route, your instructions need to be extremely clear about what the shares are, who holds them, how many are needed, and what software to use for reconstruction. This is a great option for technically minded holders, but it's probably overkill if your heirs aren't comfortable with computers.
Time-Locked Transactions (nLocktime)
Bitcoin has a built-in feature called nLocktime that lets you create a transaction that can't be broadcast until a specific date. In theory, you could create a transaction sending your entire balance to your heir's address, set the lock time for one year in the future, and give them the signed transaction. Every year while you're alive, you move your coins to a new address, which invalidates the old time-locked transaction, then create a fresh one.
It's clever in theory. In practice, it's fragile. You have to remember to refresh the transaction every cycle. If you forget, your Bitcoin moves automatically. If the fee market has changed dramatically, the transaction might get stuck. And your heir's address needs to exist in a wallet they can access. Most people should skip this one and go with multisig instead. We include it for completeness, not as a recommendation.
Dead Man's Switch Services
A dead man's switch works by requiring periodic check-ins. Miss the check-in, and the system triggers a pre-set action. For Bitcoin inheritance, that action is usually sending an email or notification with recovery instructions to your designated heir.
Google's Inactive Account Manager is the simplest version. It's free and lets you set a timeout period (3, 6, 12, or 18 months of inactivity) after which it sends data to your chosen contacts. You can include instructions about where to find your Bitcoin recovery materials.
One hard rule: never send the actual seed phrase through a dead man's switch. Email isn't secure. The switch should point people to where the recovery materials are physically stored, not transmit the materials themselves.
Inheritance Services Compared: Casa vs Unchained vs DIY
Three main approaches. Here's how they stack up for inheritance specifically.
| Feature | Casa | Unchained | DIY Multisig |
|---|---|---|---|
| Inheritance Built-In | Yes (Premium and up) | Yes (all plans) | Manual setup |
| Annual Cost | $120 to $2,100 | $250 | $0 (hardware cost only) |
| Heir Experience | Guided, low friction | Guided, low friction | Depends entirely on your docs |
| Multisig Model | 2-of-3 or 3-of-5 | 2-of-3 | Whatever you configure |
| Bitcoin-Only | No (supports ETH) | Yes | Yes (typically) |
| Best For | Non-technical holders | Bitcoin-focused holders | Advanced users only |
Our take: Casa is the easiest option for most people. The app is polished, the inheritance process is well-designed, and your family won't need to fumble through technical documentation. Unchained is the better fit if you want Bitcoin-only purity and don't mind a slightly more hands-on approach. DIY multisig gives you full control but only works if you're confident your heirs can follow detailed written instructions without help. For a deeper comparison, see our multisig wallet comparison.
Legal Frameworks: Wills, Trusts, and Letters
The technical side is only half the equation. You also need the legal side sorted out. Bitcoin sits in an awkward spot legally: it's property in most jurisdictions, but the mechanisms for transferring it after death weren't designed for bearer assets that exist on a decentralized network.
Can You Put Bitcoin in a Will?
Yes, but be careful. You can absolutely mention Bitcoin in your will and designate who should receive it. The problem is what comes next. Wills go through probate, and probate is public. Anybody who requests the document can read it. If your will contains a seed phrase or specific details about where your backup is stored, that information becomes accessible to strangers. Bad idea.
The better approach: your will should reference the existence of digital asset holdings and point to a separate, private document. Something like: "I own Bitcoin and other digital assets. Recovery instructions are stored in a sealed envelope at [bank/attorney location]. My executor should contact [name] for assistance." That's it. Keep the details out of the will itself.
Trusts vs Wills for Bitcoin
For most Bitcoin holders with significant stacks, a revocable living trust is the better vehicle. Trusts skip probate entirely, which means they stay private. Your heirs get access faster. The trust document can include detailed instructions about digital asset recovery without those instructions ever becoming public.
A revocable trust lets you keep full control during your lifetime. You can move Bitcoin in and out, change beneficiaries, and update recovery instructions whenever you want. The trust only becomes irrevocable after your death, at which point the successor trustee follows the instructions you left.
Fair warning: setting up a trust costs more than a basic will. Expect $1,500 to $5,000 for a trust drafted by an attorney who understands digital assets. But if you're holding serious Bitcoin, this cost is noise compared to the value you're protecting.
The Letter of Instruction
This is the most underrated tool in Bitcoin inheritance. A letter of instruction is a separate document from your will or trust. It's not legally binding, but it's where the real detail goes. Think of it as a user manual for your heirs.
The letter explains what Bitcoin is (in simple terms), that you own some, approximately how much, which wallets and devices you use, where your backup materials are stored, and step-by-step instructions for recovering the funds. Write it for someone who has never touched a hardware wallet before. Because that's exactly who'll be reading it.
Choosing Your Executor
Your executor is the person responsible for carrying out your wishes after death. For Bitcoin, this choice matters more than it does for traditional assets. Ideally, your executor should be at least somewhat technical, or willing to learn. They don't need to be a Bitcoin expert, but they need to be comfortable following detailed written instructions involving hardware devices and software wallets.
If your executor isn't technical at all, name a "digital asset advisor" in your documents. This is a trusted friend or professional who can walk the executor through the recovery process. In the US, the Revised Uniform Fiduciary Access to Digital Assets Act (RUFADAA) gives executors and trustees legal authority to access digital assets. Most states have adopted it. If your attorney hasn't heard of RUFADAA, find a different attorney.
Your Step-by-Step Inheritance Plan
Enough theory. Here's the actual plan. You can finish this in a single afternoon. Pick your complexity level based on how much Bitcoin you're holding and how technical you are.
Document What You Own
Make a complete inventory. Which wallets do you use? How much Bitcoin is in each? Where are the hardware devices physically located? Where are the seed phrase backups? If you use a passphrase, note that one exists (but store it separately). Don't store amounts in the same document as recovery materials. Keep the "what I own" list separate from the "how to access it" instructions.
Choose Your Method
Simple (under $10K): Sealed envelope with detailed instructions in a bank safe deposit box. Moderate ($10K to $100K): Collaborative custody with Casa or Unchained, which includes built-in inheritance. Advanced ($100K+): Multisig plus a trust, with a designated digital asset advisor and geographic distribution of key materials.
Write the Letter to Your Heirs
Use the template in the section below. Write it for someone who doesn't know what Bitcoin is. Explain everything. Include device names, wallet software, contact info for technically savvy people who can help, and the exact steps to follow. Test it: could your least technical family member follow these instructions?
Store It Securely
Your letter goes in a tamper-evident envelope in a bank safe deposit box, with an attorney, or both. Your will or trust should reference the letter's existence and location. Never store the letter at home in an unlocked drawer. Never email it. Never put it in cloud storage. Physical, secure, offline.
Test the Plan
This is the step everyone skips, and it's the most important one. Give your letter to a trusted friend or family member and ask them to walk through the recovery process. Not with real funds, just the instructions. Can they follow every step? Do they get stuck anywhere? Fix whatever trips them up. An untested plan is barely better than no plan at all.
Review Annually
Set a yearly calendar reminder. Check that backups are accessible, the letter is current, your executor's info hasn't changed, and your custody provider (if you use one) still holds your key. Update after major life events: marriage, divorce, new kids, moving. Bitcoin goes up over time. Your protection should keep pace.
For Your Heirs: What They Need to Know
If you're reading this section because a loved one passed away and left you Bitcoin, here's what matters right now. Take a breath. Nothing is urgent. Bitcoin doesn't expire. It will sit safely in the wallet for as long as it takes you to figure this out.
The Basics Your Heir Needs to Understand
- Bitcoin is digital money that lives on a network called the blockchain. It's not stored on the device itself. The device holds the "keys" that prove ownership.
- A seed phrase is a list of 12 or 24 words. It's the master backup. Anyone who has this phrase can access the Bitcoin. Guard it like cash.
- A hardware wallet is a small physical device (like a USB stick) that stores the keys securely. You'll need it, plus the seed phrase, to recover the funds.
- Don't rush. Scammers target grieving families who suddenly discover they've inherited crypto. Don't share your seed phrase with anyone online. No legitimate service will ever ask for it.
- Get help from someone you trust. If a technically savvy friend or family member was named in the recovery instructions, contact them. If a custody provider like Casa or Unchained is involved, call them directly.
If you're completely new to Bitcoin and need to start from scratch, our Bitcoin for beginners guide explains the fundamentals in plain language. Take your time. The coins aren't going anywhere.
What NOT to Do
Some mistakes show up again and again. Avoid every one of these.
- Don't put your seed phrase in your will. Wills become public during probate. Anyone can request a copy. Your 24 words, broadcast to the world.
- Don't email your seed phrase to yourself. Or to your spouse. Or to anyone. Email is not encrypted by default. One data breach and your Bitcoin is gone.
- Don't store everything in one location. Seed phrase, hardware wallet, and instructions all in the same safe? One break-in or one fire wipes out everything. Distribute across locations.
- Don't rely on a single person. What if your one trusted contact moves, becomes incapacitated, or dies before you? Build redundancy into the human layer too.
- Don't keep the plan only in your head. "I'll explain it to them when the time comes." The time might come when you can't explain anything. Write it down.
- Don't use a cloud password manager for your seed phrase. Password managers are great for website logins. They're not designed to protect bearer assets worth potentially millions. Keep seed phrases offline, period.
- Don't assume your heirs will figure it out. They won't. If you wouldn't expect your grandmother to configure a Linux server, don't expect your spouse to recover a multisig wallet without detailed instructions.
Letter Template for Your Heirs
Copy this template and fill in your specifics. Store the completed version in a tamper-evident envelope in a secure location. Write it by hand or print it. Never store it digitally.
Letter of Instruction: Bitcoin Recovery
Dear [Name],
If you're reading this, I'm no longer around to explain things in person. I own Bitcoin, a form of digital money, and I want you to have it. The Bitcoin is safe, and there's no rush. It won't expire. Take your time with these instructions.
What I own:
I hold approximately [amount] Bitcoin across [number] wallet(s). At the time of writing, this is worth roughly $[value]. The actual value will depend on the market price when you access it.
How to access it:
- My hardware wallet is a [device name, e.g., Trezor Model T / Ledger Nano X]. It's stored at [location].
- My seed phrase (a list of [12/24] words that acts as the master key) is stored at [location, e.g., bank safe deposit box at XYZ Bank, box number 123].
- If I use a passphrase (an extra word beyond the seed phrase), it's stored separately at [location].
- If I use a custody provider: I have an account with [Casa/Unchained]. Contact them at [phone/email]. They hold one of the keys and will guide you through the recovery process. You'll need a death certificate and government ID.
Important contacts:
- [Name], [relationship], [phone/email]: This person understands Bitcoin and can walk you through the recovery. I trust them completely.
- [Attorney name], [firm], [phone]: Holds a copy of these instructions and can assist with legal matters.
What to watch out for:
- Never share the seed phrase words with anyone online, by email, or by phone. No legitimate company will ask for them.
- Scammers target people who've inherited crypto. If someone contacts you offering "help recovering Bitcoin," be extremely skeptical.
- Don't install random software. Only use [wallet software name] downloaded from [official URL].
I wrote this because I love you and I want you to have what I've built. Take your time. Ask [trusted contact name] for help. You'll be fine.
Frequently Asked Questions
What happens to my Bitcoin when I die?
If nobody knows your private keys or seed phrase, your Bitcoin is gone forever. There's no bank to call, no password reset, no customer support. Your coins just sit in the wallet permanently, inaccessible to anyone. An estimated 3 to 6 million BTC are already lost this way. Setting up an inheritance plan is the only way to prevent your holdings from joining that number.
Should I put my seed phrase in my will?
No. Wills become public documents during probate, which means anyone who files a request can read yours. Putting a seed phrase in a will is like posting your bank password on a public bulletin board. Instead, use a separate letter of instruction stored privately with an attorney or in a sealed envelope in a bank vault. Your will should reference the existence of Bitcoin holdings and point to where the recovery instructions are stored.
What's the easiest inheritance setup for non-technical people?
Collaborative custody through Casa or Unchained. Both offer built-in inheritance features where your heirs work with the provider to verify their identity and co-sign a recovery transaction after your death. Your family doesn't need to understand multisig or private keys. The provider walks them through it. Casa starts at $120 per year, Unchained at $250 per year.
Is a Bitcoin trust better than a will for crypto?
Usually, yes. A trust avoids probate entirely, which means it stays private and your heirs get access faster. Revocable living trusts let you move Bitcoin into the trust while keeping full control during your lifetime. The trust document spells out who gets what and how. Find an attorney who understands digital assets, because most boilerplate trust language doesn't cover private key management.
What is Shamir's Secret Sharing and should I use it?
Shamir's Secret Sharing splits your seed into multiple pieces (called shares) so that only a specific number of shares are needed to reconstruct the original. For example, you might create 5 shares and require any 3 to recover. Trezor Model T supports this natively through SLIP-39. It's a solid option for advanced users who want geographic distribution without trusting any single person with full access. But it adds complexity. If you're not comfortable with the math, go with multisig instead.
How do dead man's switches work for Bitcoin?
A dead man's switch requires you to check in periodically, say once every 30 to 90 days. If you miss the check-in, the system assumes something happened and triggers an action, usually sending recovery instructions to a designated contact. Google Inactive Account Manager does this for free. Important: never send the actual seed phrase through the switch. Send instructions about where to find the recovery materials.
Can my heirs access Bitcoin without the seed phrase?
Only if you've set up an alternative access path. With collaborative custody providers like Casa or Unchained, your heirs can work with the company using legal documentation (death certificate, ID verification) to co-sign a transaction. Without any plan in place, no. The seed phrase or private keys are the only way to move Bitcoin, and there's no backdoor.
How often should I update my Bitcoin inheritance plan?
At least once a year. Set a calendar reminder. Check that all backup materials are still accessible, your letter of instruction is current, your executor's contact info hasn't changed, and the custody provider (if you use one) still holds your key. Also update after major life events: marriage, divorce, new children, moving to a different state or country. Bitcoin appreciates over time, so your plan should grow with your holdings.
What does my heir actually need to do to recover my Bitcoin?
It depends on your setup. For a simple single-key wallet, they need your seed phrase, the hardware wallet model name, and instructions on which wallet software to use. For multisig through a provider, they contact the company with a death certificate and ID, then the provider guides them through co-signing a transaction. Write everything down assuming zero Bitcoin knowledge. Include device names, software links, and a trusted contact who can help.
Is it safe to tell my family I own Bitcoin?
You don't need to tell them the amount. You just need to tell them it exists and where the recovery instructions are. The biggest risk isn't that your family knows you have Bitcoin. The biggest risk is that they don't know, and your coins are lost forever. Be selective about who knows the details, but make sure at least one trusted person knows there's a plan and where to find it.
Don't Let Your Bitcoin Die With You
Start with the letter template above. Then pick a custody method that fits your stack. Every hour you spend on this protects years of savings.