Cryptocurrency does not vanish when its owner dies. The coins remain on the blockchain, exactly where they were. What can vanish is the ability to reach them.

Unlike a bank account, cryptocurrency held in a personal wallet comes with no branch to visit and no beneficiary form to file. Access depends entirely on private keys — the secret credentials that authorize every transfer of the coins — and heirs can use only what they can find.

This article compiles the main statistics and facts from six published sources. It covers estimates of lost Bitcoin, inheritance planning gaps, wills, taxes, and the tools people use to pass on crypto.

Key Statistics at a Glance

Figures on lost crypto are estimates rather than exact counts. Each source applies its own methodology and reference date, so the numbers vary. The range of lost Bitcoin estimates is wide because nobody can count coins that simply sit still on a blockchain. The sources also cite causes unrelated to death, such as scams and destroyed seed phrases, which makes it difficult to isolate how many coins were lost specifically at an owner's death.

The six sources include a financial news site, two law offices, a hardware wallet manufacturer, a digital legacy company, and a market news outlet. Some of them sell products or services tied to crypto storage or estate planning, a fact readers should keep in mind when weighing the figures.

How Much Bitcoin Is Lost?

Ledger Academy and Afterlife AI both estimate that 2.3 million to 4 million Bitcoin are already lost. According to Ledger, that equals 11% to 18% of the total supply. Afterlife AI notes that some of these coins were lost when owners died without writing down how to reach their wallets.

24/7 Wall St. cites a 2020 estimate from the data firm Chainalysis, which put the figure at about 3.7 million BTC. Valued as of October 4, 2026, those coins would be worth around $315 billion. The publication says the coins are locked because heirs never found the wallet keys.

The Law Office of Andrew Kern offers a smaller figure, estimating that $20 billion in Bitcoin is permanently inaccessible because owners died without sharing their private keys.

The numbers differ because they likely measure different things. The $315 billion figure covers all lost coins, while the $20 billion figure counts only coins whose owners died.

The sources agree on the underlying cause. Ledger Academy writes that the blockchain has no concept of death certificates or legal succession; it simply waits for a signature that will never come. The same source explains why guessing a key is not an option: Bitcoin uses cryptography so complex that guessing the right key is impossible even with all of Earth's computing power running for billions of years.

The Law Office of Andrew Kern notes that courts in California treat crypto as property that can be inherited, taxed, and passed through probate, the court process for settling an estate. In practice, however, heirs get nothing without the key. Afterlife AI puts it this way: the blockchain never loses your crypto, it only loses the people who knew how to reach it.

The Inheritance Planning Gap

Many crypto holders worry about what will happen to their coins, yet few make a plan. Ledger Academy cites a Cremation Institute study that found nearly 90% of crypto holders worry about inheritance, while only a small fraction create formal plans because they do not know where to start. That distance between concern and action is what the planning practices described below are meant to close.

The Law Office of Andrew Kern reports that 24% of Americans have documented their digital assets. That figure covers digital assets in general rather than crypto alone, and because the two statistics come from different groups, they should not be compared directly.

The amounts at stake are growing. Ledger Academy, citing analyst insights based on a 2024 Bank of America report, says $6 trillion in crypto assets are projected to transfer through inheritance by 2045.

Investopedia points out that naming a beneficiary may not be enough. The beneficiary also needs to know the assets exist, where they are held, and how to reach them.

Chris and Charles Brooks, who run CryptoAssetRecovery.com, suggest three early steps: tell your heirs, or at least your lawyers, that you own crypto; record and secure your backups; and test your recovery seeds while you still have access.

E-Law describes one cautionary case. A crypto investor died in an accident at age 33 after allegedly accumulating about $60 million in Bitcoin, Ethereum, XRP, and Cardano. According to E-Law, the claim can never be confirmed because no one knew how to reach his wallets.

Afterlife AI says a sound plan has four parts: a private inventory of holdings, a documented executor path for exchange accounts, a secure handoff for self-held keys, and a person with the authority to act. It lists the most common causes of loss as no record, lost keys, locked accounts, and heirs who do not know how to claim the assets.

Exchange Accounts vs. Self-Custody Wallets

Where crypto is held determines what heirs face. Crypto on an exchange behaves like a financial account because a company holds the keys. Afterlife AI says most major exchanges now publish a process for deceased accounts. The executor usually sends a death certificate, a grant of probate or letters of administration, and proof of identity. The Law Office of Andrew Kern adds that the process takes time and money, but it is possible.

Self-custody offers no such process. Heirs need the seed phrase, or the hardware device and its PIN. According to Afterlife AI, without them no court order and no company can help.

24/7 Wall St. notes that Bitcoin held through a brokerage account, a spot Bitcoin ETF (a fund that holds Bitcoin directly), or a regulated custodian is treated like traditional stock for inheritance purposes, and the executor handles the paperwork with the firm.

Ledger Academy warns that exchange accounts without named beneficiaries can lead to months of legal steps. The Brookses say some investors avoid custodians because of past hacks, but they also note that custodians have strong security and systems for moving assets to an estate.

Ledger Academy takes a different view. It argues that custodial wallets, such as exchanges, do not give you your own private keys, cites the common saying "not your keys, not your coins," and warns that when a custodian fails, the assets and any inheritance plan can vanish with them.

For people handling a death, the Law Office of Andrew Kern advises contacting the exchange with a death certificate and proof of relationship for crypto held on an exchange. For a private wallet with no key, it says the crypto is likely lost and suggests talking to a probate attorney about any remaining options.

Why Crypto Gets Lost

Ledger Academy lists five common patterns of loss: hacks or scams; seed phrases lost or destroyed by fire or water; owners who die without documenting access; hardware wallets with forgotten PINs; and multisig setups — arrangements that require several separate keys to approve a single transaction — that are missing key signers.

Most modern wallets use a seed phrase of 12 or 24 words, which can rebuild all of a wallet's private keys on a new device. Ledger Academy says most hardware devices lock out users after three wrong PIN attempts.

Heirs can cause losses too. Ledger Academy describes an executor who typed a seed phrase into a search bar and landed on a fake wallet site, and a family member who photographed a seed phrase, an image that then uploaded to cloud storage where hackers could find it.

Physical storage can also fail. If a seed phrase sits in a safe deposit box, heirs may need a court order to open it, which Ledger Academy says can take months.

The Brookses advise against using a mobile phone as the only backup. The phone may be dead, or the wallet app may no longer work, when the time comes. Some popular wallets today may also lose support by then.

Inheritance Setups and Their Limits

Ledger Academy describes four ways to set up crypto inheritance, each trading ease of use against risk. One caveat applies: Ledger sells hardware wallets, so readers may want to weigh its ratings with that in mind.

Ledger says a newer method called MuSig2 can cut Bitcoin transaction fees by 30% to 40% and makes a multisig transaction look like a standard one on the blockchain. Support begins with Ledger Bitcoin app version 2.4.0.

Each setup has limits. In a 3-of-5 guardian plan, losing contact with three guardians makes recovery impossible. Ledger also says guardians must stay trustworthy, available, and technically able for decades.

Timelocks, which restrict when Bitcoin can be spent, carry their own risks. A missed check-in or a setup mistake can lock funds or release them too early, and Ledger says every new Bitcoin deposit needs its own timelock setup.

Ledger calls one Ethereum method, EIP-7702 social recovery, highly experimental, saying most users are better served by Bitcoin multisig or traditional Ethereum multisig.

Holding coins on several networks adds work. Ledger Academy says owners of Bitcoin, Ethereum, Solana, and other assets should document each chain with its own recovery steps. It adds that using fewer chains greatly reduces inheritance complexity, though spreading holdings may still make sense for some investors.

Wills, Probate, and Taxes

Four of the sources give the same warning: never put a seed phrase, private key, or password in a will. A will that goes through probate may become a public record. Instead, the will can name the assets and state who controls them, while access details belong in a separate private document. E-Law calls this a letter of instruction.

According to E-Law, a letter of instruction keeps private keys out of the public probate process. It also notes that family members may need to learn how crypto works, since many are not comfortable with it. For some owners, E-Law suggests a trust so that a trustee who understands digital assets can manage and transfer them.

Probate rules depend on how crypto is held. Investopedia says crypto owned individually may become part of the probate estate. Trusts and other arrangements may let some assets pass outside probate, and rules vary by state. When someone dies without a will, crypto in the probate estate generally passes under state intestacy laws, and who inherits depends on state law and the surviving relatives.

The IRS treats crypto as a digital asset and applies property tax principles. Selling or exchanging it can create a taxable gain or loss. 24/7 Wall St. says the date-of-death basis — the tax value assigned to inherited assets on the day of death — could wipe out decades of capital gains for heirs.

Choosing a fiduciary also requires care. Suzy Walsh, a fellow of the American College of Trust and Estate Counsel, told Investopedia that fiduciaries are supposed to keep assets safe, not hold volatile assets like crypto tokens.

NFTs, Online Accounts, and Other Digital Assets

Crypto is only one part of a digital estate. The Law Office of Andrew Kern compares several asset types, and outcomes vary by platform rules and by whether the owner left access details.

Time matters. Kern says Google typically takes about 30 days to process a request, and some platforms delete inactive accounts after 90 to 180 days. The money at risk can represent steady income: Kern gives two examples, an Etsy shop earning $3,000 a month and an Upwork freelancer billing $50 an hour, both of which lose revenue if the account is locked.

Social platforms differ. Facebook and Instagram let users name a legacy contact, while Kern says X does not allow inheritance. Most people never set up these options.

Kern lists six planning steps for a digital estate: list every digital asset you own, record how to reach each one, and store that information securely, such as in a password manager. Then update your will or trust to mention digital assets, set up account recovery options, and tell someone where the information is kept.

Kern also says speed matters for heirs. Contact each platform early and ask it to preserve the account. For cloud storage, call the provider right away to prevent deletion.

Keeping a Crypto Plan Current

A plan can go out of date. Ledger Academy suggests a check every six months, covering whether devices power on and accept the PIN, firmware updates, safe deposit box access, and a review of the written guide.

Life events also call for a review. Ledger Academy lists marriage or divorce, the birth of a child, moving, and large crypto purchases. After a large purchase, it suggests a live test in which the executor practices the full recovery steps.

Travel adds another risk. Ledger Academy says some countries can legally seize hardware wallets at the border and suggests spreading multisig keys across places before a trip.

The Brookses likewise advise testing recovery seeds while you still have access, which confirms the seeds work and link to the right wallet.

The statistics point to one conclusion: crypto survives its owner, but access often does not. The sources say a record of what you own, secure key storage, a named and prepared executor, and regular reviews are the main ways to avoid permanent loss.

Sources

• Investopedia: Protect Your Crypto Holdings for Future Generations
• Law Office of Andrew Kern: What Happens to Crypto, NFTs, and Digital Assets When You Die
• Ledger Academy: What Happens to Your Crypto When You Die: The Complete Guide
• Afterlife AI: What Happens to Your Crypto When You Die
• E-Law: What Happens When Cryptocurrency Owners Die?
• 24/7 Wall St.: What Happens to Your Bitcoin When You Die?

This article originally appeared on Blockonomi.