DAC8 will begin tax data exchanges on 30 September 2027, pending developments in Bull Bitcoin’s case
Chainalysis estimates that potentially taxable digital asset activity worth $9.4 billion was generated in France in 2025: $5.2 billion in payments, $2.5 billion in capital gains, and $1.7 billion in mining and staking income.
For the 2024 tax year, around 24,000 French taxpayers declared net capital gains of €368 million. The two figures are not directly comparable: taxable activity does not correspond to taxable profit, and tax returns consider only net capital gains. Chainalysis states that non-compliance may exceed 90% in some countries.
In France, net digital asset capital gains are subject to a flat tax rate of 31.4%, with an annual exemption threshold of €305. The European DAC8 directive entered into force on 1 January 2026 and requires digital asset service providers in member states to collect users’ identification and transaction data for transmission to national tax authorities. Data exchanges will begin on 30 September 2027, pending developments in Bull Bitcoin’s legal action.
Authorities will begin cross-border data exchanges on 30 September 2027. DAC8 implements the OECD’s Crypto-Asset Reporting Framework in the European Union. According to the source, Chainalysis estimates that CARF captures around 14% of global taxable activity; self-custody wallets, decentralised exchanges, peer-to-peer transfers and on-chain income have no intermediary that can be required to report them.
