France

France has one of the more clearly codified crypto tax frameworks in the EU. The Direction Générale des Finances Publiques (DGFiP) administers a flat tax regime on crypto gains introduced in the Finance Act for 2019 and refined in subsequent budgets. The framework is explicit on the key points — when tax is triggered, how it is calculated, and what must be declared — including a statutory obligation to declare all foreign exchange accounts. DAC8 exchange reporting is active from 2026, significantly increasing DGFiP's automated access to transaction data.

Core Tax Treatment

Gains from the disposal of cryptocurrency for euros or other fiat currency are subject to the Prélèvement Forfaitaire Unique (PFU) — the flat tax — at a combined rate of 30% (12.8% income tax plus 17.2% social charges). From 2026, the social charges component increases slightly, raising the combined rate to approximately 31.4%. An annual exemption of €305 applies to net gains — disposals producing net gains below this threshold in a given year are not taxable.

Alternatively, taxpayers may elect to apply the progressive income tax scale (up to 45%) instead of the flat rate, which may produce a lower effective rate for those in the lower income brackets. This election applies to all capital income in the year — it cannot be applied selectively to crypto alone.

The Crypto-to-Crypto Deferral

France provides a full statutory deferral for crypto-to-crypto swaps. Exchanging one cryptocurrency for another — including token swaps on DEXs — is not a taxable event in France. Tax is only triggered when cryptocurrency is converted to fiat currency (euros or other government currencies), used to purchase goods or services, or donated. This deferral is one of the most favourable features of the French system relative to peers like Germany or the UK, where every swap is a disposal.

The cost basis of the acquired cryptocurrency is the fair market value of the disposed asset at the time of the swap. Chains of crypto-to-crypto swaps accumulate deferred gains that crystallise only on fiat conversion. Taxpayers should document each swap to establish the correct cost basis for the eventual taxable disposal.

Professional Trading

Where an individual's crypto activity constitutes a professional or habitual commercial activity — systematic trading with professional organisation, crypto as principal income source — income is taxed under the BNC (Bénéfices Non Commerciaux) regime at progressive rates of up to 45%, plus social charges. The effective total rate for professional traders can exceed 55% at the top of the income scale. The DGFiP assesses professional status based on the facts of each situation; frequency, volume, and the use of professional infrastructure are all relevant.

Foreign Exchange Account Declaration

French tax residents are required to declare all foreign cryptocurrency exchange accounts on Form 3916-bis as part of their annual tax return. This applies to any account held on a non-French exchange — Binance, Kraken, Coinbase (US), and similar platforms. Failure to declare foreign accounts carries automatic penalties of €750 per undeclared account per year, rising to €1,500 where the account value exceeds €50,000. This obligation applies regardless of whether any taxable disposals occurred during the year. It is one of the most commonly overlooked compliance requirements for French crypto holders and one of the DGFiP's most effective enforcement tools.

Reporting

Crypto gains are declared via Form 2086 (capital gains calculation) and Form 2042-C (declaration of the taxable gain), filed as part of the annual income tax return. Form 3916-bis must be completed for each foreign exchange account held during the year. The annual return filing deadline is typically late May to early June (varies by département for online filings). DAC8 exchange reporting is active from 2026, providing DGFiP with automated transaction data from EU-licensed platforms.