How to leave Bitcoin to your heirs (without putting your seed in your will)

Your family can't use Bitcoin they can't reach, and a will is the wrong place to write down the key. Here is a practical way to solve both problems.

Why heirs usually can't reach your Bitcoin

A bank account has a paper trail, a beneficiary form and a customer service line. Self-custodied Bitcoin has none of those. Whoever holds the private key (usually written down as a "seed phrase" or "recovery phrase") controls the coins. Fidelity's estate-planning article puts it this way: without the private key, even an executor with full legal authority likely couldn't get into the wallet.

There are two separate problems, and families often hit both:

• They don't know it exists. Nolo notes that cryptocurrency rarely leaves a paper trail, so heirs who don't know about your Bitcoin may never find it.
• They can't get in. Even if they know, they need the key, the right device or software, and the steps to use them. A lawyer's authority over your estate doesn't replace the key.

Coins left on an exchange are a different problem: your executor has to deal with the company. Some exchanges offer a legacy or beneficiary tool, so check yours.

What not to do

• Don't let your will point to your instructions by name. Nolo says that in most states a document your will identifies can become part of the will and end up in the public file. Ask your attorney how to keep them separate.
• Don't store the seed and the explanation together. Self Custody Labs warns that anyone who finds a seed and knows it's for Bitcoin can take everything.
• Don't split your seed by just dividing the words (first 12 to one person, last 12 to another). Self Custody Labs says that is less secure, not more. If you want to split a backup, use a proper scheme your wallet supports.
• Don't leave heirs open to scams. Self Custody Labs warns that "recovery services" claiming to restore Bitcoin without the seed are scams. Tell your heirs this in writing.
• Don't leave it out of your estate plan. Nolo recommends naming your cryptocurrency in your will or trust (without keys or passwords) so it doesn't just fall into the catch-all "residue" of your estate.

A practical checklist

1. Make an inventory

List what you own and where: which wallets and devices, which exchanges, what kind of setup each one uses. Don't list the seed phrases. Fidelity suggests noting whether coins are on an exchange, in a hot wallet, or in a cold wallet. Also keep purchase dates and prices, since Nolo says you need cost-basis records for each account.

2. Write a letter of instruction

Fidelity and Nolo both recommend a separate letter instead of putting details in the will. Write it for someone who knows nothing about Bitcoin, with steps from opening the wallet to turning coins into cash, as Nolo suggests.

A word of caution: sources differ on one point. Nolo's example memorandum includes the recovery phrase itself, while Self Custody Labs says to keep seeds and instructions separate. One middle path is a letter that explains what you have and where the backups are, with the backups stored elsewhere. Decide this with your attorney.

3. Choose how your heirs will actually get in

There is no perfect answer, only trade-offs:

• Single key with instructions. The simplest option. One wallet, a protected backup, and a letter telling a trusted person where to look. Self Custody Labs says it needs no changes to your setup, but it relies on one person and one location, and anyone who finds the backup can take the coins. It suggests it for smaller amounts and high-trust families.
• Multisig with keys held by different people. A multisig wallet needs more than one key to spend, for example any 2 of 3. You might hold one, a family member another, and an attorney or second relative the third. No single person can move the coins alone, and one lost key doesn't lock you out. The cost is complexity: Self Custody Labs says every key holder also needs the wallet descriptor (a configuration file), because seeds alone won't restore a multisig wallet. The ABA's article adds that a professional who holds a key can face licensing questions, which vary by state, so ask any attorney whether they will hold one.
• Collaborative custody services. A company holds one key in a multisig setup and helps with recovery. Self Custody Labs lists professional key management and inheritance help as benefits, and fees, company-failure risk and less privacy as costs. We don't recommend any provider.

Match the choice to your heirs' skills: Self Custody Labs says a plan they can't carry out is worse than a simpler one they can.

4. Test the recovery

Self Custody Labs and Nolo both say to test the plan. Follow your own instructions on a fresh device, or have your heir do it, ideally with a small amount of Bitcoin. Fix whatever confuses them, then update the letter.

5. Review it every year

Self Custody Labs recommends an annual check: can you still reach every key, are contacts current, do backups still work? Update the plan after a marriage, divorce, birth, death, move, or change of executor.

When to hire an estate attorney and a CPA

Fidelity says to discuss your crypto with your estate planning attorney and keep them updated. Nolo says to talk to a qualified estate planning lawyer if your holdings are significant. Consider a professional when:

• losing your coins would seriously hurt your family;
• you want a trust, or have a blended family or heirs in several states or countries;
• you're setting up multisig and want an attorney to hold a key;
• you're unsure how your heirs would be taxed when they receive or sell coins.

An attorney handles the legal documents and authority. A CPA handles records, cost basis and tax. Many don't know Bitcoin yet, so ask direct questions:

Further reading

Each of these is written by a third party. We link to them for background, not as endorsements, and we don't control their content.

• Fidelity: Fitting cryptocurrency into your estate plan
• Nolo: How to Leave Cryptocurrency in Your Will
• American Bar Association: Bequeathing Bitcoin: Storing and Transferring Cryptocurrency upon Death
• Self Custody Labs: Bitcoin Inheritance Planning