The French National Assembly’s Finance Committee has advanced Amendment I-CF821, which proposes mandatory annual disclosure for self-custodied crypto wallets valued at €100 000 or more as of December 31. Failure to comply could result in fines reaching €10 000.

The proposal, sponsored by deputies Charles de Courson, Jean-Pierre Bataille, and Michel Castellani, aims to address tax reporting gaps. Data from a parliamentary inquiry indicated that in 2021, €3,5 billion in crypto capital gains were generated, while only €400 million were declared.

The initiative is part of a broader fiscal reform package for digital assets. Other proposed measures include an exit tax for crypto holdings exceeding €800 000 for individuals moving abroad and the elimination of tax deferrals on stablecoin conversions.

The legislative process faces uncertainty after the budget revenue section related to the amendment was rejected by a vote of 31-3 on October 9, 2026. Debate is scheduled to resume in the full National Assembly on October 13, 2026.

This proposal follows a failed attempt in April 2026 to set a disclosure threshold at €5 000. The current limit was raised to €100 000 partly due to security concerns regarding targeted attacks against crypto holders in France.