Bitcoin Estate Planning When a Spouse Has Died: A Guide for Surviving Spouses

When a spouse dies, the surviving partner faces a cascade of decisions that would be difficult in any circumstance. Add Bitcoin to that picture — a digital asset with no central authority, no customer support line, and access that may depend entirely on information the deceased held alone — and the situation can quickly move from grief to crisis.

This guide is written for the surviving spouse who has inherited or expects to inherit Bitcoin. It does not assume any prior technical knowledge. It assumes only that you are navigating something genuinely hard, and that you deserve clear, honest information about what comes next.

We will cover the immediate practical problem of access, the critical tax deadlines that cannot be missed, and the long-term estate planning work that needs to follow. We will also be direct about what can wait — because most decisions in the first weeks after a loss should wait.

The Immediate Problem: Accessing Your Spouse's Bitcoin

The first question most surviving spouses have is also the most urgent: can I access the Bitcoin at all?

The answer depends entirely on how well your spouse planned ahead.

If your spouse planned ahead and left a Letter of Instruction, your path is clear: work through it systematically with your estate attorney. The LOI should tell you where the hardware wallets are stored, where the seed phrase backups are, and who to contact for assistance. Follow those instructions step by step.

If no plan exists, the situation is harder — but not hopeless. The Bitcoin is still there. It has not disappeared. What you need is time, professional help, and patience.

When There Is No Letter of Instruction: A Step-by-Step Approach

1. Contact an estate attorney immediately

   Before touching any hardware wallet or digital device, retain an estate attorney who has experience with digital assets. They can advise you on your legal authority to access accounts and assets, and they can help you engage technical specialists through proper channels.
2. Locate all hardware wallets and seed phrase backups — without attempting access

   Search home safes, filing cabinets, desks, storage units, safe deposit boxes. Look for steel seed phrase backup plates, paper slips, or notebooks. Photograph or document what you find. Do not connect devices to computers or attempt to unlock them yet.
3. Check the deceased's password manager

   If your spouse used a password manager (1Password, Bitwarden, LastPass, etc.), you may find wallet PINs, exchange account credentials, or notes about seed phrase storage. Your attorney can advise on the appropriate legal process for accessing a deceased person's accounts.
4. Review email for crypto-related correspondence

   Search for emails from exchanges, custody services, or wallets. Look for account verification emails, 2FA setup confirmations, or any correspondence that references Bitcoin addresses, balances, or recovery information.
5. Engage a Bitcoin custody specialist — through your attorney

   For cases where seed phrases cannot be located and on-device access is the only option, there are legitimate firms that specialize in wallet recovery. Your attorney should vet and hire any such specialist on your behalf. Do not engage random online services or respond to any offer of "Bitcoin recovery" from unsolicited sources.

The portability election: A 9-Month Deadline You Cannot Afford to Miss

While the access problem is the most emotionally urgent issue, the portability election is often the most financially consequential — and it comes with a hard deadline that grief does not pause.

When a person dies, any portion of their federal estate tax exemption that they did not use — the Deceased Spousal Unused Exclusion (DSUE) — can be transferred to the surviving spouse. This is called the portability election, and it must be made by filing a federal estate tax return (Form 706) within nine months of the decedent's death (with a possible six-month extension to file, but not to elect).

State Portability: A Separate Analysis

Many states impose their own estate taxes with their own exemptions — often far lower than the federal threshold. Several states with estate taxes do not offer portability at all. Oregon, Massachusetts, and Washington, for example, have estate tax thresholds well below $5 million, and state portability rules vary widely or do not exist.

If you are in a state with an estate tax, your attorney must analyze the state rules separately. Do not assume that federal portability planning solves the state problem.

The Step-Up in Basis: One of the Most Valuable Tax Benefits in the Tax Code

When a person dies, the tax basis of the assets they own is "stepped up" to the fair market value on the date of death. For Bitcoin holders who acquired their coins years or decades ago at a tiny fraction of current values, this step-up can eliminate an enormous capital gains tax obligation entirely.

The rules differ significantly based on whether you live in a community property state or a common law state — and for married couples with Bitcoin, this distinction can be worth hundreds of thousands of dollars.

Community Property States: The Double Step-Up

The following states use community property rules: California, Bitcoin family office in Texas, Arizona, Idaho, Louisiana, Nevada, New Mexico, Washington, and Wisconsin. (Alaska allows opt-in community property; some other states have partial community property regimes.)

In community property states, assets acquired during the marriage are owned 50/50 by each spouse. When the first spouse dies, both halves of the community property receive a stepped-up basis — not just the deceased spouse's half. This is the double step-up, and it is one of the most powerful tax benefits available to married couples.

Common Law States: The Half Step-Up

In common law states — the remaining 41 states plus the District of Columbia — only the deceased spouse's half of jointly owned assets receives the step-up. The surviving spouse's half retains its original cost basis.

If you are in a common law state, there may be proactive strategies worth discussing with an attorney before the first spouse's death — such as titling Bitcoin assets in tenancy by the entirety, or ing community property by agreement in states that allow it. These conversations belong in the estate planning process, not after the fact.

Rebuilding Your Own Estate Plan

The surviving spouse's estate plan almost certainly needs to be rebuilt from scratch. This is not optional, and it is not a task that can be deferred indefinitely.

Here is what has likely changed:

• Your estate is now larger. You have inherited your spouse's Bitcoin plus any other assets they held. This may have pushed you above state or federal estate tax thresholds you previously cleared comfortably.
• Your will and trust name your spouse. Beneficiary designations on retirement accounts, life insurance, and brokerage accounts likely name the deceased. These need to be updated immediately — not eventually, immediately.
• Your power of attorney may be invalid. A Durable Power of Attorney that named your spouse as agent is now effectively terminated. You need a new DPOA naming a different agent who can act on your behalf if you become incapacitated.
• Your Letter of Instruction is out of date. Your own LOI should be updated to reflect the Bitcoin you now hold, where it is stored, and who should be contacted to assist your own heirs.
• Your portability election protects the inherited exemption — but does not substitute for planning. Even with the DSUE, you still need updated Bitcoin Trust Type Selector tools, asset titling, and beneficiary designations to ensure your own estate is handled according to your wishes.

The Emotional Reality: Most Decisions Can Wait — With One Exception

Estate planning professionals who work with bereaved spouses consistently observe the same pattern: decisions made in the first weeks and months of grief are frequently the worst decisions of a person's financial life. This is not a failure of intelligence. It is a function of how grief affects judgment, energy, and perspective.

The rule of thumb is this: stabilize, grieve, then plan.

You do not need to sell your Bitcoin in the first 90 days. You do not need to update your trust in the first 90 days. You do not need to make any permanent, irrevocable financial decision in the first 90 days — with the exception of the portability election, which has its own unmovable timeline.

The Bitcoin is safe in the wallet. It is not losing value by sitting there while you find your footing. The step-up in basis is captured at the date of death, not at the date of sale. The portability election timeline is fixed, but everything else can follow a more humane pace.

If anyone — any advisor, any family member, any attorney — is creating pressure to make irreversible decisions while you are still in the acute phase of grief, that pressure is not in your interest. The right advisors will understand this. The right team will help you identify what must happen now (portability, beneficiary updates on retirement accounts) and what can wait until you are ready to think clearly.