France backs reporting for self-custodied crypto worth 100K euros or more

France has been moving crypto tax questions into its annual budget process, with the National Assembly debating rules for self-custodied holdings and stablecoin taxation in the 2027 budget cycle. The self-custody proposal would affect people who hold crypto outside a centralized exchange and keep it in their own wallets. A declaration threshold of €100,000 places a reporting obligation on higher-value holdings rather than on every wallet user.

For people who use self-custody, the practical change is a new disclosure step tied to year-end holdings, rather than a change in how the assets are stored. For builders and service providers, the presence of a stablecoin tax amendment alongside wallet reporting shows that France is trying to fold digital assets into existing fiscal supervision. If adopted in final form, users would need to track value more closely and account for what the French tax system treats as reportable holdings.

The dispute sits at the boundary between tax administration and the original promise of self-custody, where users keep direct control over their assets without relying on an intermediary. A reporting regime for private wallets narrows that privacy and administrative simplicity, while leaving the assets themselves in user hands. The separate stablecoin tax amendment shows that lawmakers are not only looking at custody but also at how digital money moves through the French system.

What remains open is whether the reporting rule or the stablecoin tax returns in the Senate and, if so, what language survives into the final budget text. The record here does not show whether the Senate will restore the same €100,000 threshold, change the penalties, or drop the amendments again. The final settlement will depend on the budget process that follows the National Assembly vote.