What happens when a country decides that holding your own crypto keys no longer stays completely private from the tax office? France just took a concrete step in that direction. Lawmakers approved a proposal that would force taxpayers to report self-custodied digital assets once those holdings reach €100,000 at the end of the year. The penalty for staying silent can climb as high as €10,000. I’ve been watching these regulatory moves for a while, and this one feels different because it targets pure self-custody rather than exchange accounts.
How France Advanced the Self-Custody Crypto Reporting Measure
On November 3 the National Assembly voted 150 to 44, with eight abstentions, in favor of Amendment I-2701. The text sits inside the broader discussion of the 2027 budget. Charles de Courson and a handful of colleagues from the Liberties, Independents, Overseas and Territories group brought the measure forward. It does not create a new annual wealth tax on crypto. It simply adds a declaration duty for people who hold qualifying assets outside any crypto-asset service provider.
The obligation would slot into Article 1649 bis C of the tax code, the same article that already covers certain foreign crypto accounts. The key trigger is clear: total value of self-custodied crypto greater than or equal to €100,000 measured on December 31. Not the peak during the year. Just the year-end snapshot. That design choice matters more than it first appears.
What Exactly Must Be Declared and When
Holders would need to notify the authorities about crypto they control directly through their own wallets. The amendment itself stays relatively silent on the precise data points that must be submitted. Will it be total euro value only? Wallet addresses? Transaction summaries? Those details would likely arrive later through secondary rules or a decree. Right now the core requirement is the existence of the holding above the threshold.
The valuation date is fixed. December 31 becomes the single reference point. That approach avoids the complexity of tracking every daily fluctuation, yet it still captures substantial positions. Someone who held €120,000 in October but sold down to €80,000 by year-end would fall outside the rule. Conversely, a quiet accumulation that crosses €100,000 only in late December would trigger the duty.
Failure to report carries a potential fine of up to €10,000. That figure is high enough to get attention yet not so catastrophic that it automatically bankrupts smaller holders who might overlook the obligation. Still, for many people the real cost is less about the money and more about the principle of reporting assets they control privately.
Why the €100,000 Threshold Survived the Debate
Competing amendments floated lower numbers. One suggested €5,000. Another proposed €50,000. Both were rejected. Finance Committee general rapporteur Philippe Juvin supported the idea of disclosure in principle but left the final threshold decision to the full Assembly. The higher bar won. In my view that was a pragmatic compromise. A €5,000 trigger would have swept up a huge number of ordinary holders and created an administrative burden out of proportion to the tax risk. €100,000 focuses attention on the larger positions where authorities believe the fiscal stakes are higher.
Public Action and Accounts Minister David Amiel opposed the whole approach. His core argument was straightforward and hard to dismiss: people who intend to hide assets will simply refuse to declare them. A self-reporting system, he suggested, mainly catches the honest while the determined avoiders stay invisible. He preferred gathering information through intermediaries whenever possible, at least until technical questions around self-custody are better resolved.
Someone committing fraud could simply decline to report their assets.
That skepticism is understandable. Self-declaration systems always face the classic compliance problem. Yet de Courson defended the December 31 snapshot as a practical way for tax authorities to identify the biggest holdings and allocate enforcement resources more intelligently.
Where the Proposal Stands in the Legislative Process
This was only the first reading stage of the budget process. The Finance Bill still has further parliamentary work ahead, including examination in the Senate. Amendments can be modified, delayed, or removed entirely. Nothing is final until the full budget clears every remaining hurdle. Anyone holding self-custody crypto in France should treat the current text as a serious signal rather than an immediate legal obligation.
Earlier in the autumn the Finance Committee had already shown support for a wallet disclosure idea. The Assembly vote simply moved that idea forward with a clearer numerical threshold. The remaining path through the Senate will determine whether the €100,000 rule survives intact, gets adjusted, or disappears.
Privacy Concerns Raised by Bitcoin Advocates
Not everyone welcomes the move. An advocacy group focused on Bitcoin published a research note urging rejection of the self-custody reporting amendments. If the measure passed the Assembly, they recommended fighting for its removal in the Senate. Their central point is simple: declaring ownership of self-custodied assets is fundamentally different from reporting taxable gains. They drew a comparison with physical gold, jewelry, or art that people keep at home. Those items are not automatically subject to annual ownership declarations of the same kind.
The privacy angle runs deeper. Public wallet addresses can link a known individual to an entire transaction history. An extended public key can reveal multiple receiving addresses. Once that information sits in government databases, questions arise about access controls, consultation logs, retention periods, and potential future use. The amendment itself does not spell out those safeguards. That silence creates room for concern.
I’ve found that privacy arguments often get dismissed as pure ideology. In this case they feel more practical. If the eventual decree requires submission of addresses or extended keys, the information becomes permanently associated with a tax identity. Reversing that association later is nearly impossible. That permanence deserves careful design rather than after-the-fact fixes.
How Existing Rules Already Touch Self-Custody
France already requires certain declarations for crypto accounts held through foreign organizations. Legal analysis earlier in the year clarified that pure self-custody wallets, where the owner alone controls the private keys and no service provider is involved, fall outside that existing foreign-wallet rule. The new amendment aims to close precisely that gap.
At the European level, DAC8 is already moving forward. From January 1, 2026, reporting providers must collect information on reportable transactions involving EU-resident users. Transfers out to self-custody wallets are among the covered events when a provider handles the movement. The first reporting cycle is expected in 2027. So even without the French amendment, a significant portion of the path from regulated platforms into personal wallets will generate data trails.
That context matters. The French proposal does not appear in a vacuum. It sits alongside broader European efforts to increase visibility into crypto movements while still leaving pure on-chain, never-touched-by-an-intermediary activity harder to observe. The combination creates a layered transparency system: intermediaries report what they see, and large self-custody holders may soon have to report what they hold.
Practical Questions Still Left Unanswered
Several operational details remain open. Which pricing source will convert crypto balances into euros on December 31? Spot market averages? Specific exchange rates published by an official body? The amendment is silent. Holders of volatile assets could face valuation swings of tens of percent in a single day, so the choice of methodology will matter.
What exact information must be filed? A simple total value declaration is one thing. Providing a list of wallet addresses or seed-related data is quite another. The difference is not minor. One preserves a degree of privacy; the other effectively maps an individual’s on-chain footprint to a tax file.
How will authorities treat multi-signature setups, shared custody arrangements, or assets held in smart contracts that the individual can influence but does not solely control? Those edge cases tend to appear only after rules start applying. Leaving them unaddressed creates uncertainty for sophisticated holders.
- Valuation methodology for year-end euro conversion
- Exact data fields required in the declaration
- Treatment of multi-signature and shared control arrangements
- Access controls and retention rules for submitted information
- Interaction with existing foreign-account reporting obligations
Until secondary guidance appears, careful holders will probably adopt a conservative approach: document their December 31 positions thoroughly and prepare for the possibility that more detail will eventually be requested.
Comparing the French Approach with Broader Trends
Other jurisdictions are tightening crypto tax visibility at different speeds. Some focus almost exclusively on intermediary reporting. Others experiment with broader ownership declarations. France’s choice of a relatively high €100,000 threshold positions it between aggressive low-threshold regimes and pure hands-off approaches. It signals seriousness about large holdings without attempting to capture every retail wallet.
In the United States, broker reporting rules for digital assets have already established timelines for gross-proceeds information and, later, basis reporting. Those rules operate primarily through regulated brokers rather than direct self-custody declarations. The philosophical difference is notable. One system leans on intermediaries; the other adds a direct obligation on the holder once size becomes material.
Neither model is perfect. Intermediary reporting can miss pure peer-to-peer or self-generated activity. Self-reporting relies on voluntary compliance and faces the classic incentive problem that Amiel highlighted. Most tax systems end up using a mixture of both. France appears to be moving toward that mixed model for crypto.
What Holders Should Consider Right Now
Even though the rule is not yet law, the political signal is clear enough. Anyone approaching or already above the €100,000 zone at year-end should start thinking about record-keeping. Maintaining clean valuation snapshots on December 31 will become useful whether or not this exact amendment survives. Good documentation helps with ordinary capital gains calculations in any case.
People who prefer to stay below the threshold may adjust position sizes or timing of acquisitions and disposals. That kind of behavioral response is common whenever bright-line reporting triggers appear. Whether it is desirable policy is a separate debate. It is a predictable reaction.
Perhaps the most interesting aspect is how this interacts with the broader European transparency agenda. DAC8 will generate data on many transfers into self-custody. A domestic ownership declaration for large remaining balances would give authorities a second data point. Matching the two could become a powerful compliance tool. That potential linkage is worth watching as both regimes mature.
The Political Context Behind the Vote
Budget debates always involve trade-offs. Revenue needs, administrative capacity, fairness arguments, and privacy claims compete for attention. In this case the Assembly chose a relatively high threshold and accepted a self-reporting model despite ministerial reservations. That outcome suggests lawmakers wanted to demonstrate action on crypto visibility without creating an immediate compliance avalanche for smaller holders.
De Courson framed the December 31 declaration as a way to help tax authorities focus on the largest positions. That framing resonates with a practical enforcement logic: concentrate scarce resources where the numbers are biggest. Whether the resulting data will actually improve detection of serious non-compliance remains an open empirical question. Amiel’s skepticism will only be tested if the measure becomes law and real-world results appear.
Interestingly, the same budget process also saw discussion of other crypto-related ideas, including an exit tax that ultimately did not advance in the same way. The selective survival of the self-custody reporting amendment shows that not every proposal receives equal treatment. Threshold size and administrative simplicity appear to have mattered.
Looking Ahead to Possible Senate Changes
The Senate stage offers another opportunity for adjustment. Thresholds can be raised or lowered. Scope can be narrowed. Safeguards can be added. Or the entire provision can be struck. Advocacy groups that opposed the Assembly text will almost certainly intensify their efforts in the upper house. Holders who support clearer rules may lobby for more precise valuation and data-protection language.
Whatever emerges, the conversation itself has shifted. Self-custody is no longer treated as an invisible zone by default. The political presumption is moving toward greater visibility once holdings become large. That cultural and regulatory change may prove more durable than any single amendment.
In my experience, once governments start collecting a new category of information they rarely abandon the effort entirely. They refine it. They expand it. They integrate it with other data sources. The smart response for holders is therefore not panic but preparation: better records, clearer understanding of control structures, and realistic expectations about future transparency requirements.
Balancing Transparency Goals with Practical Realities
Tax authorities have legitimate reasons to seek better information about substantial asset holdings. Crypto’s technical features make traditional third-party reporting incomplete. At the same time, forcing individuals to map their private keys or addresses onto tax identities carries genuine privacy and security implications. The €100,000 threshold attempts to balance those competing pressures by limiting the obligation to larger positions.
Whether that balance holds will depend on implementation details still to come. A lightweight value-only declaration looks very different from a requirement to disclose every relevant address. The former is closer to existing wealth reporting for certain other assets. The latter moves into new territory for digital holdings.
I tend to favor clear rules over ambiguous ones. Ambiguity creates compliance risk for honest people and enforcement gaps for everyone else. If France is going to require self-custody reporting, the eventual guidance should state exactly what must be filed, how value is calculated, and what protections apply to the data. Vague obligations help no one.
Key Takeaways for Crypto Holders in France
The Assembly has signaled that large self-custodied positions may soon carry a formal declaration duty. The threshold sits at €100,000 measured on December 31. Penalties can reach €10,000. The measure is not yet final law and still faces further parliamentary stages. Privacy and compliance questions remain only partly answered.
- Monitor the remaining budget process closely, especially Senate developments.
- Begin documenting year-end valuations even before any obligation becomes effective.
- Clarify your own control structures for multi-sig or shared arrangements.
- Watch for secondary guidance on valuation sources and required data fields.
- Understand how DAC8 intermediary reporting already creates parallel data trails.
None of this means self-custody is under existential threat. It does mean that the regulatory environment continues to evolve toward greater visibility for substantial holdings. Adapting to that reality with better records and clearer processes is simply prudent.
The coming months will show whether the €100,000 rule becomes part of the final 2027 budget framework or gets reshaped along the way. Either outcome will influence how French holders think about the trade-off between direct control of their assets and the administrative duties that may attach to that control. For now the conversation has moved from abstract principle into concrete legislative text, and that shift alone changes the landscape.
Staying informed, keeping clean records, and maintaining realistic expectations about future transparency requirements remains the most practical stance. The amendment may still change, but the direction of travel is visible enough to plan around.
