Crypto Estate Planning: Inheritance, Access, and the Step-Up in Basis

Why crypto inheritance is different from every other asset

A traditional brokerage account, bank account, or retirement plan has an institution behind it. If the account holder dies, the institution follows a documented process: death certificate, letters testamentary, identity verification, and transfer. The asset does not disappear even if the paperwork takes months.

Crypto held in self-custody — a hardware wallet, cold storage, or a software wallet — has no institution behind it. The asset is controlled entirely by whoever holds the private key or seed phrase. There is no recovery process, no customer service line, and no authority that can override the cryptographic lock. If your heirs cannot locate and correctly use the seed phrase, the coins are permanently inaccessible. Estimates of permanently lost Bitcoin alone run to several million coins — a meaningful fraction of the total supply.

The seed phrase problem and how to solve it

A seed phrase (also called a recovery phrase or mnemonic) is typically 12 or 24 words that can regenerate any wallet and sign any transaction. Anyone with the phrase controls the funds. That makes it both the most important document in a crypto estate plan and the most dangerous thing to store carelessly.

The goal is not just to make the phrase accessible — it is to make it accessible to the right person, at the right time, without creating a security risk during your lifetime. Several approaches exist:

Physical storage with an estate attorney or fireproof safe

The seed phrase is written on durable material (paper, metal) and stored in a sealed envelope with your estate attorney or in a fireproof home safe, with clear written instructions in your will or trust document. This is the simplest approach for straightforward estates. Risks: single point of failure if the attorney or safe is unavailable; no geographic redundancy for disaster scenarios.

Multi-signature (multi-sig) wallets

A multi-sig wallet requires M-of-N key holders to authorize a transaction — for example, 2 of 3 keyholders must sign. You hold one key, a trusted family member holds another, and a third is stored separately (with an attorney, in a vault, or held by a custody service). No single key controls the funds, so a lost key does not mean lost access, and theft of one key cannot drain the wallet. This is the preferred approach for large positions. It requires more technical setup but eliminates the single-point-of-failure problem.

Institutional custody with estate procedures

Custodians like Coinbase Custody, Gemini, or Kraken maintain documented estate claim processes. If the account holder dies, the estate executor can work through the custodian's process — similar to a brokerage transfer. The tradeoff is counterparty risk: the custodian can be hacked, go insolvent, or freeze accounts. For holdings above $1 million, many advisors recommend splitting custody between an institution and self-custody with a multi-sig structure.

Shamir's Secret Sharing

A more technical option: cryptographically split the seed phrase into N shares (e.g., 5), such that any M of them (e.g., 3) can reconstruct the original secret. Shares are distributed to trusted parties — family members, an attorney, a trusted friend. No individual share reveals the phrase. Trezor's SLIP39 standard implements this natively on some hardware wallets. Best suited to holders with technical sophistication and a large enough estate to warrant the complexity.

Exchange and custodial accounts: beneficiary designations are separate from your will

If you hold Bitcoin or other crypto at an exchange (Coinbase, Kraken, Gemini, Binance.US), the beneficiary designation on file with that platform determines who receives the asset at death — not your will. This is the same rule that governs 401(k)s and IRAs: a will cannot override a named beneficiary on a financial account.¹

Many long-term crypto holders set up exchange accounts years ago, named no beneficiary, and have not reviewed the account since. If no beneficiary is named, the account goes through probate — a slow, public process that can take months or years and exposes the estate to creditors. Naming a beneficiary directly on the account bypasses probate for that asset entirely.

Action items for exchange accounts:

• Log into each exchange account and verify the named beneficiary or Transfer on Death (TOD) designation.
• Confirm the designation matches your current estate plan — not a former spouse or an outdated contact.
• If the exchange does not support beneficiary designations (some do not), consider whether the account should be moved or whether the asset should be transferred to a custodial structure that does.

Trusts for crypto: what works and why

A revocable living trust can hold cryptocurrency the same way it can hold other property — by transferring ownership of the wallet or exchange account into the trust during your lifetime. Assets held in trust avoid probate, transfer immediately to successor trustees upon death, and remain private (unlike a probated will, which becomes a public record).

For crypto specifically, a trust structure solves several problems at once:

• Successor trustee access. You designate a successor trustee — often a trusted family member or professional trustee — who takes over the trust at your death or incapacity. The trust document gives them explicit authority to access and manage the crypto holdings according to the trust terms.
• Technical instructions. The trust document (or a separate memorandum incorporated by reference) can include detailed instructions for accessing self-custodied wallets, multi-sig procedures, or exchange account credentials through a secure handoff process.
• Incapacity planning. A trust continues to function if you become incapacitated. A will only activates at death. If you are in a coma with $2 million in Bitcoin in a self-custodied wallet and no trust, the asset may be frozen until a court appoints a guardian or conservator.

Note: transferring self-custodied crypto into a trust typically means changing the recorded owner on exchange accounts or documenting that a hardware wallet is held as trustee. Work with an estate attorney who has handled digital assets — the technical steps vary by institution and wallet type.

The step-up in basis under IRC §1014: the hold-to-death calculation

Under IRC §1014, assets included in a taxable estate receive a basis adjustment to fair market value on the date of death. For crypto held in self-custody or at an exchange, this means heirs inherit the coins with a basis equal to the price on the day you die — not the price you originally paid.²

The practical effect is significant for long-term holders. If you bought $50,000 of Bitcoin in 2019 and it is worth $1.4 million today, selling before death creates roughly $1.35 million in taxable gain. At the top federal rate of 23.8% (20% long-term capital gains + 3.8% NIIT), that is approximately $321,000 in federal tax before state. If you hold until death, heirs inherit at the $1.4 million basis — the $1.35 million gain is eliminated permanently.³

This creates a real planning decision:

The step-up only applies to assets in a taxable estate. Crypto held in a Roth IRA does not get a step-up (the IRA is not part of the taxable estate in the same way). Crypto donated to charity during lifetime uses the fair market value for the deduction but also eliminates the gain — a different path to the same tax avoidance.

Estate tax: the $15 million exemption and what it means for crypto holders

The federal estate and gift tax exemption for 2026 is $15 million per person ($30 million for married couples with portability).⁴ Under the One Big Beautiful Bill Act (OBBBA, July 2025), this exemption was made permanent — the scheduled 2026 sunset that would have dropped the exemption to roughly $7 million no longer applies.

Most crypto holders are not in estate-tax territory. If your total taxable estate — including home, retirement accounts, brokerage, business interests, and crypto — is under $15 million (single) or $30 million (married), the federal estate tax does not apply. The step-up in basis still applies at full force regardless of whether the estate owes any estate tax.

For households with estates above the exemption — or those on a trajectory to cross it if crypto continues to appreciate — estate tax planning adds another dimension: annual gifting ($19,000 per recipient per year in 2026), irrevocable trusts (IDGT, SLAT), or charitable strategies that remove assets from the taxable estate while capturing the charitable deduction.

What a crypto-aware financial advisor coordinates

Crypto estate planning sits at the intersection of technical custody, tax planning, and legal structure. A financial advisor does not replace an estate attorney or custody specialist — but someone needs to pull the three threads together into one coherent plan, and that is typically where generalist advisors fail.

A crypto-aware fee-only financial advisor coordinates:

1. The hold-versus-sell decision. Models the after-tax outcome of selling now, selling in tranches over time, donating appreciated crypto, or holding to death. The right answer depends on income, estate size, charitable goals, life expectancy, and concentration risk — not just the tax rate.
2. Custody documentation review. Confirms that self-custody wallets, multi-sig setups, and exchange accounts are documented in a way the estate can access. Works with the attorney to incorporate custody instructions into the trust document or a secure memorandum.
3. Beneficiary designation audit. Verifies that each exchange account names the right beneficiary or is held by the trust, and that the designations align with the overall estate plan.
4. Estate attorney coordination. The attorney drafts the trust and will. The advisor ensures the financial structure — which assets to hold in trust, which to hold outright, what the step-up math looks like — is reflected in the legal documents.
5. Long-term policy. If the plan is to hold to death for the step-up, the diversification, security, and income-needs plan still has to work without selling. That requires a written investment policy that addresses what portion of net worth should remain in crypto, how much cash reserve is appropriate, and when the hold-to-death thesis no longer holds.

Get matched with a crypto estate planning advisor

If your crypto position is large enough that a custody mistake, missing seed phrase, or undocumented estate plan would change what your family inherits, this is the planning problem to solve first. Tell us where you are in the process and we will match you with a fee-only advisor who coordinates with estate attorneys and understands both sides of the problem.

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1. IRS, Retirement Topics — Beneficiary — beneficiary designations on financial accounts supersede will provisions; assets pass directly to named beneficiaries outside of probate.
2. IRS, Publication 559 — Survivors, Executors, and Administrators — basis of property acquired from a decedent is determined under IRC §1014 as the fair market value at date of death.
3. IRS, Net Investment Income Tax — 3.8% NIIT applies to net investment income for single filers with MAGI above $200,000 / joint filers above $250,000; top combined LTCG rate is 23.8%.
4. Tax Foundation, Estate Tax — Tax Foundation — federal estate and gift tax exemption for 2026 is $15 million per person; permanently set by the One Big Beautiful Bill Act (OBBBA, July 2025).

Tax values verified as of June 2026. OBBBA (July 2025) permanently set the estate/gift exemption at $15M and eliminated the scheduled sunset. IRC §1014 step-up rules unchanged. LTCG brackets and NIIT thresholds sourced from IRS 2026 guidance.