Chainalysis estimated global potentially taxable crypto activity reached $457 billion across six blockchains during 2025.France accounted for estimated $9.4 billion in income, gains, and crypto payment activity during 2025.French taxpayers reported €368 million in crypto gains for 2024 through approximately 24,000 tax filings submitted.DAC8 requires providers to collect 2026 transaction data, with first exchanges due September 30, 2027.Chainalysis cautioned its estimates exclude exchange-internal activity and may understate total taxable economic income worldwide.