EU DAC8 and UK CARF Rules Take Effect Jan. 1, 2026, Mandating Crypto Tax Data Collection

New tax reporting rules for cryptocurrency transactions under the EU's DAC8 and the UK's Crypto-Asset Reporting Framework (CARF) began applying on Jan. 1, 2026, initiating data collection for 2027 tax reports. According to NS3.AI, covered UK providers must submit their first reports to HMRC between Jan. 1 and May 31, 2027. The common deadline for EU authorities to exchange information on nonresident users from 2026 is Sept. 30, 2027. Provider reports do not calculate cost basis, gains, or tax owed.