France Crypto Wallets: Self-Custody Holders Face €10K Fines

If you hold your own crypto keys in France, the tax office may soon want to know about them. On Friday, October 9, the French National Assembly's Finance Committee backed a new rule — Amendment I-CF821 — that would require annual disclosure of self-hosted crypto wallets to tax authorities, with fines attached for anyone who stays quiet. The move makes France crypto wallets a flashpoint in the country's 2027 budget fight, and it puts self-custody holders squarely in regulators' sights.

Here is what the amendment would do. Anyone holding crypto in a self-hosted wallet — meaning you control your own private keys rather than leaving coins on an exchange — valued at more than a six-figure threshold as of December 31 each year would have to declare it annually on their tax return, according to Cointelegraph. The bar is set at the equivalent of roughly $112,000. Skip the declaration and you could face fines reaching a five-figure sum, Cointelegraph also reported. The sponsors — Charles de Courson, Jean-Pierre Bataille, and Michel Castellani of the LIOT parliamentary group — argue the rule closes a gap between what people hold and what they report.

The numbers behind the France crypto wallets push

The sponsors' justification leans on a striking claim: a parliamentary inquiry found billions in crypto capital gains in 2021, while declared holdings that year amounted to only hundreds of millions, according to Cointelegraph. But there is a caveat worth honoring — the Bitcoin Foundation cautions that the two figures are not directly comparable and are not, by themselves, evidence of unpaid taxes. The amendment's backers are citing the gap as a reason to act, not proving evasion. Committee rapporteur Philippe Juvin praised the disclosure initiative as "full of wisdom," while MP Nicolas Sansu supported it but said the threshold "seems high," per WEEX's coverage of the committee debate.

Important context: this is not yet law. The amendment creates a new tax form requirement — it does not ban personal wallets and does not force holders onto exchanges, according to the Bitcoin Foundation. And the politics are messy. The same committee adopted a package of related crypto measures, including an emigration levy on large crypto holdings for taxpayers leaving France and an end to tax deferrals on stablecoin swaps from January 1, 2027, per the Bitcoin Foundation and TokenPost. But the committee then rejected the 2027 budget's entire revenue section by 31 votes to 3, and the National Assembly only starts debating the budget this week, running from October 13 to 19. The France crypto wallets amendments must be reintroduced and approved in that process to survive, with a final budget vote scheduled for November 17, per TokenPost and Cointelegraph. For the market backdrop, see crypto liquidity rebuilding a year after the record crash and Bitcoin ETF outflows ahead of a huge CPI week.

Why France crypto wallets matter beyond France

France is not operating in a vacuum. The EU's DAC8 reporting rule already applies to crypto service providers from January 2026, with the first reports expected in 2027, according to the Bitcoin Foundation. The new French proposal extends the logic of that regime from exchanges and custodians to individuals who hold their own keys — a much more personal frontier. For Gen Z investors who bought into the "not your keys, not your coins" ethos, self-custody was supposed to be the sovereign option. A mandatory annual declaration doesn't take that away, but the France crypto wallets rule does put a form between you and your hardware wallet.

There is also a philosophical tension that will keep the France crypto wallets story alive. Self-custody grew out of the idea that crypto should resist exactly this kind of surveillance — yet the sponsors' argument is that privacy infrastructure doubles as tax-evasion infrastructure, and the figures they cite suggest ordinary filers are underreporting. France has become a testing ground for how far regulators will go to make decentralized money legible to the state. If the France crypto wallets disclosure rule survives the budget process this autumn, expect other European finance ministries to start taking notes. The watch dates are this week's Assembly debate and the November 17 final vote — and the France crypto wallets fight is just getting started.