JMRKT.

DAC8: Year-end checklist 2026

Organise your records before the 2027 reporting year

As of 6 October 2026

  1. List all exchanges, brokers and wallets used in 2026, including closed accounts.
  2. Check the accuracy of your tax residence and self-certification with the provider.
  3. Export complete trading, deposit, withdrawal and fee histories.
  4. Record each export's date range, time zone, currency and creation date alongside the file.
  5. Match transfers between your own accounts using the network, amount, date and transaction ID.
  6. Record rewards, staking and other activities separately; mark missing information as unresolved.
  7. Keep exported raw files unchanged and store working copies separately.
  8. Compile gaps and unclear transactions for your own review or tax adviser.