Hidden Crypto Assets in California Divorces and Business Splits: How They Get Found, and What Hiding Them Costs

Ten percent of U.S. adults held or used cryptocurrency in the last year, by the Federal Reserve’s own 2025 household survey.¹ California’s divorce disclosure machinery has not caught up on paper: the Judicial Council’s FL-142 Schedule of Assets and Debts, last revised July 1, 2025, lists real estate, jewelry, coin collections, boats, and trailers, and has no line for digital assets, which land in item 16, “Other Assets.”²

If that gap sounds like an opening for a spouse or business partner tempted to keep a wallet quiet, it is the opposite. California’s fiduciary-disclosure duties were never asset-specific, the discovery choke points around crypto have gotten materially stronger in the past two years, and the remedy statute values a concealed asset at its highest value across three dates, a rule with real teeth in an asset class that can triple during the case. This guide covers both settings where the problem arises: dissolution, and the business breakup where a partner or co-founder controls the keys.

Key Takeaways

• Disclosure is mandatory even though the form is silent. The declarations are signed under penalty of perjury and require identifying all assets, community, quasi-community, or separate; crypto goes in “Other Assets,”² and knowingly omitting it is concealment, not a paperwork gap.³
• The penalty is 50% at peak value, or 100% for fraud. Family Code § 1101(g) values the concealed asset at its highest value among the breach date, the disposition date, and the award date; § 1101(h) forfeits the entire asset where the concealment meets the clear-and-convincing oppression, fraud, or malice standard.⁴
• There is no finish line. Family Code § 2556 gives courts continuing jurisdiction over omitted assets, so a wallet surfacing years after judgment is still divisible, and divisible unequally where justice requires.⁵
• The paper trail runs through the on-ramps. Exchange subpoenas,⁶ the new Form 1099-DA (whose transfer-in boxes reveal assets held elsewhere first),⁷ the Form 1040 digital-asset question,⁸ and California’s new five-year exchange recordkeeping rule⁹ are where hidden crypto actually surfaces.
• Partner concealment triggers the same duties plus a constructive trust. The spousal fiduciary standard expressly imports partnership law; a partner who diverts crypto holds it “as trustee,”¹⁰ and LLC inspection rights reaching the records cannot be waived.¹¹

Do You Have to Disclose Cryptocurrency in a California Divorce?

Yes, in every direction the question can be asked. Spouses owe each other “a duty of the highest good faith and fair dealing,” a standard the Family Code expressly makes “subject to the same rights and duties of nonmarital business partners.”¹² That duty includes “the obligation to make full disclosure to the other spouse of all material facts and information regarding the existence, characterization, and valuation of all assets in which the community has or may have an interest,” with “equal access to all information, records, and books that pertain to the value and character of those assets and debts,” upon request.¹³ The duty runs to existence, not just value, so “I never got around to valuing it” is no answer for a wallet that was never mentioned at all.

The mechanics run through the disclosure declarations. The preliminary declaration of disclosure is “executed under penalty of perjury” and must identify all assets “with sufficient particularity, that a person of reasonable and ordinary intelligence can ascertain” what is there; a bare line reading “crypto” with no exchange, wallet, or amount likely fails that standard on its face.³ The duty covers separate property as well as community property (disclosure is owed “regardless of the characterization of the asset or liability as community, quasi-community, or separate”), and it is continuing: each party has a “continuing duty to immediately, fully, and accurately update and augment that disclosure” to the extent there have been “any material changes,” so post-separation appreciation, forks, airdrops, and staking rewards flowing from assets acquired during marriage must be disclosed as they happen.¹⁴ The declaration package also must include every tax return the declarant filed in the two years before service, which matters more than it sounds, as covered below.³

If you hold crypto and are heading into a dissolution, over-disclose: exchange, wallet addresses, acquisition dates, and a valuation method, because particularity is your protection against a later concealment claim.

What Does Hiding Crypto Actually Cost?

More than the asset, in the worst case, and the valuation rule is what makes crypto concealment uniquely expensive. Family Code § 1101(g) awards the wronged spouse 50 percent of any undisclosed asset plus attorney’s fees and costs, and then fixes the number: “The value of the asset shall be determined to be its highest value at the date of the breach of the fiduciary duty, the date of the sale or disposition of the asset, or the date of the award by the court.”⁴ The highest of three dates. A spouse who concealed ten bitcoin through a bull run answers for the peak, not for whatever the market says at trial. For a savings account that rule is a footnote; for a volatile digital asset it is the whole case.

Where the concealment “falls within the ambit of Section 3294 of the Civil Code” (oppression, fraud, or malice, proven by clear and convincing evidence), § 1101(h) escalates the award to “100 percent, or an amount equal to 100 percent, of any asset undisclosed or transferred in breach of the fiduciary duty.”⁴ The controlling illustration is In re Marriage of Rossi, where a wife concealed a $1.3 million lottery share, routing the California Lottery’s checks and correspondence to her mother’s address, and the Court of Appeal affirmed an award of the entire prize to the husband: “This case presents precisely the circumstance that Family Code section 1101, subdivision (h) is intended to address. Here, one spouse intentionally concealed a significant community property asset.”¹⁵ Rossi also closed the escape hatch concealing spouses reach for, holding that nothing in the statute creates an unclean-hands exception to the 100 percent penalty.¹⁵

The supporting cast of penalties stacks on top. Sanctions for non-disclosure are the default, not a matter of open discretion: the court “shall … impose money sanctions” including attorney’s fees against a non-complying party unless it finds the party “acted with substantial justification” or that other circumstances “make the imposition of the sanction unjust,” and a judgment entered over incomplete disclosure “shall” be set aside (subject to a narrow carve-out where the complying party waived receipt of the other side’s preliminary declaration), with the statute adding that the failure “does not constitute harmless error.”¹⁶ Fee sanctions for obstructive litigation conduct are separately available: the requesting party “is not required to demonstrate any financial need for the award,” though the court must weigh both parties’ incomes, assets, and liabilities and cannot impose an “unreasonable financial burden” on the sanctioned party.¹⁷ A trier of fact may consider a party’s “willful suppression of evidence” in drawing inferences against them, which is where conveniently lost seed phrases and wiped devices end up.¹⁸ And § 2556 sets no deadline of its own: the court retains continuing jurisdiction to divide any community asset “omitted or not adjudicated by the judgment,” equally by default, unequally “upon good cause shown that the interests of justice require” it.⁵

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If your spouse’s schedule looks light and crypto is plausible, the remedies favor you; the work is proving existence, and that is a discovery problem with known solutions.

How Do Lawyers Actually Find Hidden Crypto?

Not by staring at the blockchain first. Public-ledger chains are pseudonymous and permanent, and given a known address, commercial analytics can follow funds and cluster addresses under common control; but mixers exist precisely, in FinCEN’s words, to make transactions “untraceable and anonymous,”¹⁹ and pure self-custody presents no third party to subpoena. What breaks these cases is the interface between crypto and the regulated world, and that interface has tightened considerably.

Bank records point to exchanges; exchanges have the ledger. ACH transfers to Coinbase or Kraken in ordinary bank statements are the map. From there, a business-records subpoena reaches the exchange’s transaction history; California practice points worth knowing are that the subpoena should demand native electronic form (a CSV export with deposit and withdrawal addresses, not PDF statements), and that whether the consumer-notice statute applies to a given exchange entity is an open question under California law, so the safe course is to serve the notice as if it does.⁶ The mechanics, and the account holder’s countermoves, are covered in our companion guide to crypto exchange subpoenas.

The new Form 1099-DA testifies about wallets you have never seen. Custodial brokers began reporting digital-asset sale proceeds for 2025 on the new Form 1099-DA, and the form’s quiet gift to asset-tracing lawyers is Box 12a and 12b: when a customer sells digital assets that were previously transferred into the broker’s hosted wallet, the broker must also report the number of units transferred in and the transfer-in date.⁷ A 1099-DA reporting a sale of transferred-in coins is documentary evidence that the assets lived somewhere undisclosed first: a private wallet or a second exchange. The important caveat runs the other way: the reporting rule that would have reached DeFi platforms was disapproved under the Congressional Review Act in April 2025 and is treated as though it had never taken effect, so custodial activity is reported and DeFi activity is not, which is exactly the seam a sophisticated concealer occupies.²⁰

The tax return asks the question under penalty of perjury. The 2025 Form 1040 asks every filer whether, at any time during the year, they received a digital asset (as a reward, award, or payment for property or services) or sold, exchanged, or otherwise disposed of one, and the disclosure declarations pull every return filed in the two years before service into the case.⁸ The bind is complete in both directions: a “Yes” contradicts a schedule that omits crypto, and a false “No” is its own perjury problem on a federal return. One precision point that keeps the argument honest: the receive prong reaches only a digital asset received “as a reward, award, or payment for property or services,” so a spouse who bought and simply held crypto with cash answers “No” truthfully, and the checkbox alone proves nothing against them.

California now makes exchanges keep the records. As of July 1, 2026, California’s Digital Financial Assets Law requires licensed platforms to maintain, “for five years after the date of the activity,” a record of each transaction with a California resident, including “[t]he identity of the resident,” “[t]he amount, date, and payment instructions given by the resident,” and, “to the extent feasible, other parties to the transaction.”⁹ The rule reaches licensees, so an unlicensed offshore platform is not the target audience; but for the major licensed exchanges from here forward, the records a subpoena targets are records the exchange is legally required to have.

Where there is no custodian, the case is made through devices and paper. Hardware-wallet purchase receipts, seed-phrase backups, authenticator apps, browser-extension wallets, and exchange onboarding emails are all reachable through ordinary inspection demands, and a party whose testimony cannot explain an on-chain transfer out of a known wallet is squarely in adverse-inference territory.¹⁸

One recent published decision adds a caution for the finding spouse: identifying crypto is not the same as proving it. In a 2026 support case, the Court of Appeal affirmed a trial court that declined to count the $400,000 in cryptocurrency it found a father owned toward income because there was “insufficient evidence of the purchase prices, current values, or liquidity” of his assets.²¹ Build the valuation record (acquisition data, market prices at the relevant dates, liquidity) or risk winning the discovery fight and losing the number.

“Nobody finds hidden crypto by scrolling a block explorer. You find it where crypto touches the regulated world: the bank transfer to an exchange, the 1099-DA that reports coins arriving from a wallet nobody disclosed, the tax return that answered ‘Yes.’” ---Brandon Orewyler, Principal, Astraea Counsel APC

If concealment is plausible in your case, subpoena the on-ramps first, read the 1099-DA transfer-in boxes, and build the valuation record while you litigate existence.

What About a Business Partner Who Hides Crypto?

The doctrine converges, and the Family Code says so on its face: the spousal fiduciary standard is defined by reference to the Corporations Code sections governing business partners.¹² In the business setting the toolkit is, if anything, sharper.

Partners have statutory access to the partnership’s books and records, which the partnership may keep “in any other form capable of being converted into clearly legible tangible form,” and each partner and the partnership must furnish, “[w]ithout demand,” any information concerning the partnership’s business and affairs “reasonably required for the proper exercise of the partner’s rights and duties”; that information duty comfortably reaches wallet software, exchange dashboards, and multisig configurations.²² The duty of loyalty makes a partner who derives any benefit from partnership property or opportunity hold it “as trustee” for the partnership, which reaches diverted treasury, token allocations, and airdrops that belonged to the venture.¹⁰ For LLCs, member inspection rights extend to the required records and the entity’s tax returns, courts may award fees for unjustified refusals, and the statute adds a provision concealers’ counsel tend to discover too late: “Any waiver of the rights provided in this section shall be unenforceable.”¹¹ For corporations, any shareholder, with no minimum stake, may inspect the accounting books and records on written demand, for a purpose reasonably related to the holder’s interests as a shareholder; the right “may not be limited by the articles or bylaws,” and it extends to the records of each subsidiary “of a corporation subject to this subdivision,” which matters where a token treasury sits in a special-purpose entity.²³

The remedy that matters most for an appreciating asset is the constructive trust: one who gains a thing “by fraud, accident, mistake, undue influence, the violation of a trust, or other wrongful act” is, “unless he or she has some other and better right thereto, an involuntary trustee of the thing gained.” The trust attaches to the thing itself, so the wronged partner captures the tokens and their appreciation, not a damages figure frozen at the date of the wrong.²⁴ California pleadings already show the full toolkit in action: a published 2025 decision arising from a cryptocurrency exchange breakup describes claims for breach of fiduciary duty, conversion, accounting, concealment, and a constructive trust over the company’s bitcoin, though the appeal itself turned on settlement enforcement rather than the merits, with the court remanding for judicial review of the parties’ settlement.²⁵

If a co-founder controls the keys and the answers stopped coming, your inspection rights survive the operating agreement, and the constructive trust captures the upside; move before the treasury does.

What Should You Do in the Next 30 Days?

If you suspect concealment in a dissolution: inventory what the bank records show (exchange transfers, round-number wires, purchases from wallet vendors); demand the last two years of returns and read the digital-asset answer; serve exchange subpoenas with native-format ESI demands and consumer notice; and propound inspection demands covering devices, seed-phrase storage, and exchange correspondence. If you hold crypto yourself, disclose with particularity now; the remedy statutes punish concealment, not ownership.

If the setting is a business breakup: send the statutory inspection demand immediately (it is cheap, fast, and unwaivable for LLC members), pair it with a books-and-records demand reaching subsidiaries, and if the records show diversion, plead the accounting and constructive trust early so the remedy tracks the tokens rather than a stale dollar figure.

Longer term, treat the trend as one-directional: reporting has expanded (1099-DA now, California’s five-year records rule for licensed exchanges from July 2026), the ledger itself never forgets, and § 2556 keeps the courthouse open for assets the judgment never adjudicated. The economics of hiding crypto in a California dispute are bad and getting worse.

Astraea Counsel litigates crypto ownership and fiduciary disputes, including partnership and LLC breakups where digital assets went missing, and handles the tracing, exchange-discovery, and remedies side of concealed-asset cases. If hidden crypto is in your dispute, talk to our crypto litigation team.

Related Resources

• Crypto Exchange Subpoenas: How to Get the Records, and How to Fight One
• Sued by Your Business Partner in California: A Defense Guide
• Recovering Stolen Crypto in California: The Legal Playbook
• The Crypto Tax Lawyer’s Guide to IRS Reporting

This article provides general information for educational purposes only and does not constitute legal advice. Community-property, fiduciary-duty, and digital-asset reporting law is evolving rapidly. Consult qualified legal counsel for advice on your specific situation.

Footnotes

1. Board of Governors of the Federal Reserve System, Economic Well-Being of U.S. Households in 2025 (May 2026) (10 percent of adults held or used cryptocurrency in the prior year; 9 percent bought or held it as an investment), available at https://www.federalreserve.gov/consumerscommunities/shed.htm. ↩

2. Judicial Council of California, Form FL-142, Schedule of Assets and Debts (rev. July 1, 2025), available at https://courts.ca.gov/system/files?file=2025-07%2Ffl142.pdf. ↩ ↩²

3. Cal. Fam. Code § 2104(a), (c), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2104; see also Cal. Fam. Code § 2106 (judgment shall not be entered on property rights without executed and served final declarations, subject to the statute’s enumerated exceptions), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2106. ↩ ↩² ↩³

4. Cal. Fam. Code § 1101(g)-(h), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=1101; Cal. Civ. Code § 3294(a) (the oppression, fraud, or malice standard), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=3294. ↩ ↩² ↩³

5. Cal. Fam. Code § 2556, available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2556. ↩ ↩²

6. Cal. Code Civ. Proc. §§ 2020.410, 1985.3, available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP&sectionNum=2020.410 and https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP&sectionNum=1985.3. ↩ ↩²

7. Internal Revenue Service, Form 1099-DA, Digital Asset Proceeds From Broker Transactions (2025), boxes 12a-12b (units and date of transfer-in), available at https://www.irs.gov/pub/irs-prior/f1099da—2025.pdf; Gross Proceeds and Basis Reporting by Brokers and Determination of Amount Realized and Basis for Digital Asset Transactions, 89 Fed. Reg. 56480 (July 9, 2024), available at https://www.federalregister.gov/documents/2024/07/09/2024-14004/gross-proceeds-and-basis-reporting-by-brokers-and-determination-of-amount-realized-and-basis-for. ↩ ↩²

8. Internal Revenue Service, Form 1040 (2025), digital-assets question, available at https://www.irs.gov/pub/irs-pdf/f1040.pdf; Cal. Fam. Code § 2104(a) (tax returns accompany the preliminary declaration). ↩ ↩²

9. Cal. Fin. Code § 3303(a), (a)(1)(A), (C)-(D) (five-year recordkeeping); Cal. Fin. Code § 3201 (licensing requirement operative on or after July 1, 2026), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FIN&sectionNum=3303 and https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FIN&sectionNum=3201. ↩ ↩²

10. Cal. Corp. Code § 16404(b)(1), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CORP&sectionNum=16404. ↩ ↩²

11. Cal. Corp. Code § 17704.10(b), (g), (h), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CORP&sectionNum=17704.10. ↩ ↩²

12. Cal. Fam. Code § 721(b), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=721. ↩ ↩²

13. Cal. Fam. Code § 1100(e), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=1100. ↩

14. Cal. Fam. Code §§ 2100(c), 2102(a), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2100 and https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2102. ↩

15. In re Marriage of Rossi, 90 Cal.App.4th 34, 42, 108 Cal.Rptr.2d 270 (2001), available at https://www.courtlistener.com/opinion/5808687/rossi-v-rossi/. ↩ ↩²

16. Cal. Fam. Code § 2107(c)-(d), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=2107. ↩

17. Cal. Fam. Code § 271(a), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM&sectionNum=271. ↩

18. Cal. Evid. Code § 413, available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=EVID&sectionNum=413. ↩ ↩²

19. Financial Crimes Enforcement Network, Proposal of Special Measure Regarding Convertible Virtual Currency Mixing, as a Class of Transactions of Primary Money Laundering Concern, 88 Fed. Reg. 72701, 72702 (proposed Oct. 23, 2023), available at https://www.federalregister.gov/documents/2023/10/23/2023-23449/proposal-of-special-measure-regarding-convertible-virtual-currency-mixing-as-a-class-of-transactions. ↩

20. H.J. Res. 25, Pub. L. No. 119-5 (Apr. 10, 2025) (disapproving the DeFi broker reporting rule under the Congressional Review Act), available at https://www.congress.gov/bill/119th-congress/house-joint-resolution/25; see also 90 Fed. Reg. 30825 (July 11, 2025) (removing the rule from the C.F.R.). ↩

21. In re Marriage of R.M. and P.N. (2026) No. D086317, slip op. at 5-6 (Cal. Ct. App. Aug. 21, 2026, certified for publication), available at https://www.courts.ca.gov/opinions/documents/D086317.PDF. ↩

22. Cal. Corp. Code § 16403(a)-(c), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CORP&sectionNum=16403. ↩

23. Cal. Corp. Code § 1601(a)(1), (a)(3), (b), available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CORP&sectionNum=1601. ↩

24. Cal. Civ. Code § 2224, available at https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=2224. ↩

25. Norman v. Strateman, 112 Cal.App.5th 92 (2025), review denied (Cal. Sept. 17, 2025) (describing derivative claims for breach of fiduciary duty, conversion, accounting, concealment, and a constructive trust over a cryptocurrency exchange’s bitcoin; appeal decided on settlement-approval grounds, with the enforcement order vacated and remanded for judicial review), available at https://www.courts.ca.gov/opinions/archive/A170356.PDF. ↩