How Do You Value Cryptocurrency Holdings When Drafting a Prenuptial Agreement?
Crypto’s price swings make it one of the more complicated assets to pin down when a prenuptial agreement is being drafted, and an imprecise valuation now can turn into a costly dispute years later.
The short answer
Valuing crypto for a prenuptial agreement generally means documenting a specific valuation date, the exchange rate or pricing source used, and the exact quantity and type of each holding, then attaching that record as an exhibit to the agreement. Because crypto prices move constantly, the goal isn’t to capture a “true” value so much as to create a clear, well-documented baseline that both parties agree reflects the asset’s status at a defined point in time.
Why crypto complicates standard prenup valuation
Prenuptial agreements typically list separate property along with a value at the time of marriage, which is straightforward for assets like a house or a retirement account that don’t swing by double-digit percentages in a single day. Crypto’s volatility means a value recorded on one date can look very different a week later, and unlike a house appraisal, there’s no single official appraiser whose number everyone defers to — pricing comes from whichever exchange or index is chosen as the reference.
The core elements to document
- A specific valuation date. Not “around the time of the agreement,” but an exact date, since crypto values move meaningfully even within a single day.
- The pricing source. Which exchange, index, or aggregator’s price was used, since the same asset can show slightly different prices across platforms at the same moment.
- Exact holdings. The type and quantity of each asset, along with which wallets or accounts they’re held in, so the record can be reconciled against actual holdings later if needed.
- Supporting records. Screenshots or exported statements from the relevant platform at the time of valuation, kept alongside the agreement itself as backup documentation.
Self-custody adds another layer
Crypto held in a self-custody wallet doesn’t come with an exchange-issued account statement the way custodial holdings do, so documenting a self-custodied holding usually requires pulling the balance directly from a blockchain explorer using the relevant public address, along with a screenshot or printout timestamped as close to the valuation date as possible. This record becomes especially important later, since self-custodied holdings can be harder to independently verify than exchange records if a dispute arises.
Why thorough documentation matters later
If a marriage later ends and the prenuptial agreement’s terms come into question, the valuation record becomes the reference point for what was separate property at the time of marriage versus what grew or was acquired afterward. Thin documentation — a vague reference to “crypto holdings” with no date or amount — leaves room for dispute, while a well-documented exhibit with dates, sources, and quantities gives both sides a clear baseline to work from. In more contested cases, this can matter alongside processes like subpoenaing exchange records during a divorce, where courts or attorneys work to reconstruct a fuller transaction history if the original documentation turns out to be incomplete.
Keeping the record current
Because crypto holdings can change significantly between when a prenuptial agreement is drafted and when it’s actually needed, some couples choose to revisit and update the valuation exhibit periodically, similar to how cost basis tracking requires ongoing attention rather than a single one-time record. An outdated valuation from years earlier may do little to clarify what actually needs to be divided or protected by the time it matters.
What to weigh
Valuing crypto for a prenuptial agreement comes down to documentation discipline: a specific date, a named pricing source, exact quantities, and records kept safely alongside the agreement itself. Family law governing prenuptial agreements varies by state and can change, so working with an attorney familiar with both digital assets and local requirements is generally the most reliable way to make sure a valuation will actually hold up if it’s ever needed.