The French tax authorities put the velvet gloves in the closet. This year, crypto holders are entering a much less tolerant tax campaign, as the administration refines its radars and broadens its field of vision. Between accounts to declare, taxable transfers, tax regimes and new obligations in preparation, the French investor must now walk straight. Because in 2026, misdeclaring your digital assets is no longer a simple misstep: it can quickly become a hefty bill.
In brief
- All accounts opened on exchange platforms must be declared, even closed during the tax year.
- Each taxable transfer for fiat currency or purchase must be accurately reported to the tax authorities.
- Personal wallets exceeding 5,000 euros could soon enter the radar.
- Active traders, miners and stakers are sometimes subject to separate, heavier taxation.
France tightens its grip on holders of digital assets
The days when cryptocurrencies lived in a regulatory blind spot are coming to an end. Bercy wants to see clearer, further, more often. The tax administration already monitors accounts held on centralized exchanges (CEX), both French and foreign. It could soon extend its gaze to self-hosted crypto wallets.
A amendment adopted in the National Assembly plans to oblige taxpayers to declare their personal wallets when their value exceeds 5,000 euros. The text has yet to pass the Senate stage, but the signal is clear: the blockchain version of asset anonymity is crumbling piece by piece.
This increase in pressure is not isolated. In 2025, the French tax administration strengthened its controls and increased its collections by several hundred million euros thanks to improving its monitoring tools. Digital assets now join this mapping.
The stage is set: crypto is no longer a gray area. It becomes a heritage line scrutinized like the others.
Crypto: the 2026 tax guide to avoid missteps
Individual: which accounts must you declare?
Any French taxpayer with an account on a crypto exchange must report it via form 3916-3916 bis. It doesn't matter whether the platform is French, foreign, regulated or not. Even an account closed during the tax year must appear.
Each oversight costs 750 euros per undeclared account. The IRS calls this a penalty. The taxpayer often calls this a very unpleasant surprise.
Personal crypto wallet: do you have to declare it?
To date, no. Self-hosted wallets like Ledger or MetaMask are not yet subject to mandatory declaration. But this exception could soon disappear if the bill mentioned above comes into force.
What transactions are taxable?
Many investors make a mistake here. A taxable transfer does not only correspond to a sale for euros.
Are taxable:
- the sale of cryptocurrencies for fiat currency;
- the purchase of a good or service with digital assets;
- a payment in stablecoins to settle a transaction.
On the other hand, exchanging one digital asset for another remains tax neutral. Converting bitcoin to ether is therefore not taxable at this stage.
Crypto capital gains, professional status and pitfalls that many discover too late
How to calculate the taxable capital gain?
France applies a global formula, much less intuitive than a simple purchase price versus sale price:
Transfer price – [Prix total d’acquisition × (Prix de cession / Valeur globale du portefeuille avant cession)]
In other words, the tax authorities do not only look at the token sold. He observes the mechanics of the entire portfolio. This is why so many investors get their calculations wrong.
Which form to declare your crypto winnings?
Each taxable transfer must be detailed in Cerfa 2086. Yes, even a capital loss must appear. The IRS wants the whole picture, not just the glory days.
Flat tax or progressive scale?
Two options exist:
- PFU at 31.4%;
- Progressive scale of tax on option.
The right choice depends on your tax situation. Checking the wrong box can be costly.
When do we switch to professionals?
The tax authorities can reclassify an active investor as a professional if his activity resembles a habitual, organized, repeated and lucrative practice. In this case :
- the winnings may fall under the BNC;
- or even BICs if the activity takes a structured commercial form.
Mining and staking already fall under BNC.
Figures to keep in mind before validating your declaration
- April 9, 2026: opening of the 2025 income tax campaign;
- 750 euros: fine per undeclared account;
- 5,000 euros: target threshold for future crypto wallets to be declared;
- 31.4%: current PFU rate on digital assets;
- 1 Cerfa 2086: mandatory for each taxable transfer.
The most treacherous thing in this matter is not taxation itself. This is its complexity. Many investors still think that a crypto portfolio is declared like a poorly styled Livret A booklet. Serious error. Between specific calculations, distinct regimes and increasing surveillance, amateurism is becoming an expensive luxury.
And as if that were not enough, the crypto ecosystem is seeing other tensions arise. Latest episode to date: several specialized bitcoin channels recently disappeared from YouTube, reigniting accusations of censorship against the major platforms. Clearly, in the world of digital assets, calm remains a rumor.
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