Chainalysis estimated France generated $9.4 billion in potentially taxable crypto activity during 2025, ranking 13th among countries in its study. The total comprised $1.7 billion in crypto income, $2.5 billion in realized gains and $5.2 billion in payments, and does not represent taxable profit, unpaid tax or recoverable government revenue. French taxpayers reported €368 million in crypto capital gains for 2024 through about 24,000 filings, but that figure covers a different year, currency and narrower category than Chainalysis' gross activity estimate. DAC8 requires EU crypto-asset service providers to collect reportable 2026 customer and transaction data, with the first exchanges between tax authorities due by Sept. 30, 2027. Chainalysis estimated only 14% of identified potentially taxable on-chain activity falls within CARF's practical reporting reach, with decentralized finance, peer-to-peer transfers, on-chain income and payments making up much of the remainder.