EU and UK crypto platforms collecting 2026 data for 2027 tax

Crypto-asset service providers in the European Union and the United Kingdom began collecting users’ 2026 transaction and identity data on Jan. 1, 2026 under the EU’s DAC8 rules and the UK’s Cryptoasset Reporting Framework, known as CARF. That information will be used in tax-information reports filed in 2027.

Providers must capture identifying details such as names, tax residency and tax identification numbers, along with prescribed summary aggregates. Required aggregates include annual amounts or fair market values, units and counts broken down by reportable cryptoasset and by transaction category. Tax authorities receive standardized, compressed summaries rather than full transaction histories; those summaries do not calculate cost basis, gains or tax owed and may omit activity held on other platforms or in personal wallets.

Under DAC8, providers that operate in EU member states file an annual report with the tax authority in the provider’s home member state. That authority will forward information about nonresident users to the user’s EU country of tax residence. EU authorities must complete exchanges of 2026 information about nonresident users by Sept. 30, 2027, while each member state sets the filing deadline for providers within its jurisdiction.

UK-covered providers submit their first report to HMRC between Jan. 1 and May 31, 2027, covering activity from Jan. 1 through Dec. 31, 2026. Outward exchange from HMRC to foreign jurisdictions requires both an operative agreement or arrangement and that the jurisdiction appear on the UK’s applicable reportable-jurisdiction list. The OECD maintains a register of activated exchange relationships, including legal basis, direction and applicable dates; some bilateral relationships can be nonreciprocal.

Because provider summaries may not recreate a full trade history, tax authorities and taxpayers will need detailed records to compute liabilities. HMRC guidance recommends retaining per-transaction information including transaction dates and timestamps, asset names and token identifiers, units and local-currency values at the time, wallet addresses and transaction hashes, trading and withdrawal fees, bank and card statements, and acquisition records from other venues. The guidance also advises preserving full platform export files and notes that link transfers between a user’s own accounts.

Users should identify which provider holds each account, confirm the tax residence on file with the provider and download complete transaction exports before an exchange removes an export or an account is closed. Identity information collected in 2026 could become reportable later if a jurisdiction is added to the UK’s applicable list.

The 2026 collection cycle implements DAC8 and CARF reporting across the EU and the UK and establishes the schedules and conditions under which providers report and tax authorities exchange standardized crypto information for 2027 filings.