Inheritance Planning and Estate Security

How to plan for what happens to your cryptocurrency when you cannot manage it yourself anymore. Real-world examples, professional services, and the cryptographic, legal, and family coordination dimensions of crypto estate planning.

20 min · intermediate · part of Security Mastery: Protecting Your Assets

The Most Avoided Conversation in Crypto

In a 2024 survey by The Cremation Institute, 89 percent of cryptocurrency holders reported they had not made any plan for what happens to their crypto when they die. The Coincover 2023 Estate Survey found similar results: only 23 percent of crypto holders had documented inheritance instructions, and only 11 percent had tested those instructions to confirm they actually worked. The implications are not abstract. Estimates from chainalysis-style on-chain analysis suggest that between 2.3 and 3.7 million Bitcoin (roughly 11 to 18 percent of the 21 million cap) are permanently inaccessible. Some of this loss is from forgotten passwords or destroyed seed phrases, but a significant portion is from holders who died without leaving usable instructions for their heirs. At current prices, that represents tens to hundreds of billions of dollars of value, simply gone. This is one of the most uncomfortable conversations in cryptocurrency, and consequently one of the most avoided. People do not want to think about their own death or incapacity. The crypto community, dominated by relatively young men, is structurally less likely to have estate plans than the general population. The technical details of crypto inheritance are unfamiliar to most estate attorneys. And the bearer-property nature of cryptocurrency means that there is no fallback: if you do not plan well, your heirs lose everything, regardless of what your will says. This lesson covers the cryptographic, legal, and human dimensions of crypto inheritance. We will look at Hal Finney's exemplary plan, the professional services that exist (Casa, Unchained, Sarcophagus), the jurisdiction issues that complicate cross-border holdings, and concrete recovery scenarios you can use as templates for your own planning.

Also in this lesson

Hal Finney: A Case Study in Doing It Right
Casa, Unchained, and Other Professional Services
Jurisdiction Issues and the Legal Landscape
Concrete Recovery Scenarios
A Practical Action Plan
For Deeper Reading

Key terms

Estate planning: The process of arranging for the management and disposal of your assets after death or incapacity. Critical for cryptocurrency because of its bearer-property nature.
Bearer property: Property whose ownership transfers by physical possession of an instrument or knowledge of a key. Cryptocurrency, cash, and gold coins are bearer property. Stocks held by a broker are not.
Hal Finney: Cryptographer, second person to run Bitcoin software, recipient of the first BTC transaction. Diagnosed with ALS in 2009, died in 2014. Documented exemplary cryptocurrency inheritance planning during his illness.
Casa: A self-custody and multi-sig service founded in 2018. Offers integrated inheritance planning where Casa holds one key in a multi-sig setup, released to beneficiaries upon proof of death.
Unchained Capital: A Bitcoin-focused multi-sig and financial services firm founded in 2017. Offers vaults, lending, IRAs, and inheritance support, primarily for high-net-worth individuals.
Sarcophagus: A decentralized dead-mans-switch protocol on Ethereum founded in 2021. Encrypts a payload that is automatically decrypted and delivered to beneficiaries if the user fails to renew within a defined window.
Step-up in basis: A U.S. tax provision where inherited assets are valued at fair market value as of the date of death, not the original cost basis. Applies to cryptocurrency under IRS Notice 2014-21 (treating crypto as property).
Power of attorney: A legal document authorizing one person to act on behalf of another. For cryptocurrency, must specifically address digital assets and access mechanisms; generic POA language may not suffice.
Duress PIN: A hardware wallet feature that opens a different (decoy) wallet when a specific PIN is entered. Allows a user under coercion to comply visibly without exposing primary holdings. Supported by Coldcard and others.
BIP-39 25th word (passphrase): An optional additional secret combined with the seed phrase to derive a different wallet. Without the passphrase, the seed phrase alone reveals nothing. Useful for plausible deniability and protection against physical theft of seed.
FATCA: Foreign Account Tax Compliance Act (2010). Requires foreign financial institutions to report U.S. account holders. Treatment of cryptocurrency under FATCA remains partially ambiguous as of 2026.
IRS Notice 2014-21: The U.S. IRS guidance establishing that cryptocurrency is treated as property for federal tax purposes, including inheritance. Foundational document for U.S. crypto tax and estate law.

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Educational only — not financial advice.