Bitcoin is showing up in more estates. A parent held coins for years. A spouse bought early and never sold. Suddenly a beneficiary has keys, an exchange account, or a note that says “Bitcoin is in the wallet” — and a practical tax question: what is my cost basis, and what happens if I sell?

For U.S. federal tax purposes, Bitcoin is generally treated as property. Inherited property often receives a new basis under the estate rules that apply to other property. This article is a plain-language overview for U.S. readers, not advice for your estate, will, trust, or tax year. Facts, state law, and the form of ownership matter.

Inheritance is usually not income when you receive it

In broad strokes, property you inherit is generally not included in your gross income just because you received it. That is different from earning Bitcoin as wages, mining rewards, or staking credits. Receiving inherited Bitcoin typically means you become the owner of property; it does not, by itself, usually create a paycheck-style income event.

Tax often comes later — when you sell, trade, spend, or otherwise dispose of the coins. The amount of gain or loss then depends heavily on your basis and your amount realized.

Stepped-up (or stepped-down) basis is the core idea

For many inherited assets, a beneficiary’s cost basis is the fair market value of the property on the decedent’s date of death (or, in some estates that elect it, an alternate valuation date). People often call this a “step-up” when value has risen, or a “step-down” when value has fallen.

Applied carefully to Bitcoin, that usually means: your starting basis is often the U.S. dollar fair market value of the inherited coins on the relevant valuation date — not what the decedent originally paid years earlier. When you later dispose of those coins, gain or loss is generally measured from that inherited basis (subject to the usual adjustments and facts).

Exact valuation, which coins you received, and whether the estate used alternate valuation are details for the estate’s records and your tax professional. Do not invent a basis from memory of “what Bitcoin was worth around then.”

A simple example (illustrative only)

Suppose a parent dies holding 0.5 BTC. On the date of death, that 0.5 BTC is worth $40,000. You inherit those coins and later sell the same 0.5 BTC for $45,000. If your basis is $40,000 under the stepped-up basis rules that apply to your facts, your capital gain on that sale might be about $5,000 — not based on the parent’s original purchase price from years earlier.

If instead the coins were worth $40,000 at death and you sell for $35,000, you may have a capital loss. Real estates include fees, partial lots, multiple wallets, community property rules in some states, and trusts. The example only shows why date-of-death value often matters more than the decedent’s old cost.

Holding period for inherited property

For many inherited capital assets, the beneficiary’s holding period is treated as long-term regardless of how long the decedent held the property and regardless of how soon after death you sell. That can matter for capital gain character. Confirm how this applies to your situation; do not assume every crypto product or account wrapper is identical to a simple inherited lot of Bitcoin.

What records to gather soon

Estates move fast, and exchange exports disappear. Capture what you can while access is available:

• Date of death (and alternate valuation date, if the estate used one)
• Quantity of Bitcoin inherited, and which wallets or accounts held it
• Fair market value documentation used by the estate (or a contemporaneous USD value source tied to that date)
• How title passed (will, trust, joint ownership, payable-on-death, etc.)
• Transaction IDs or transfer records when coins move into your control
• Later disposition details if you sell, trade, spend, gift, or donate

If the decedent’s basis records still exist, keep them for estate administration — but your beneficiary basis may still be the date-of-death fair market value under the usual rules, not the decedent’s old cost.

Access problems are not the same as tax basis

Lost seed phrases, frozen accounts, and unfinished estate transfers are practical problems. They do not automatically create a tax result. Basis and recognition still follow the underlying property and disposition rules. If coins cannot be accessed, talk to counsel and a tax professional about the facts before assuming a loss or write-off.

Practical tip

If you are an executor or beneficiary and Bitcoin is in the estate, treat valuation and custody like any other valuable property: document quantity, location, and fair market value as of the relevant date, then keep a clean trail of every later move. Waiting until the next April to reconstruct death-date value from incomplete screenshots is how small estates become expensive ones.

Bottom line

Inherited Bitcoin is generally property, not a paycheck, when you receive it. Many beneficiaries take a basis equal to fair market value on the decedent’s date of death (or an alternate valuation date when elected), and later sales are measured from that basis. Holding period character for inherited property is often long-term. Records of quantity, valuation date, and transfers matter more than headlines.

This article is general information about common U.S. federal tax concepts related to inherited Bitcoin. It is not tax, legal, estate, or accounting advice for your situation. Rules depend on facts, state law, and how the estate is administered. Consult a qualified professional before filing or making decisions.