JMRKT.
DAC8: Year-end checklist 2026
Organise your records before the 2027 reporting year
As of 6 October 2026

[ ] List all exchanges, brokers and wallets used in 2026, including closed accounts.

[ ] Check the accuracy of your tax residence and self-certification with the provider.

[ ] Export complete trading, deposit, withdrawal and fee histories.

[ ] Record each export's date range, time zone, currency and creation date alongside the file.

[ ] Match transfers between your own accounts using the network, amount, date and transaction ID.

[ ] Record rewards, staking and other activities separately; mark missing information as unresolved.

[ ] Keep exported raw files unchanged and store working copies separately.

[ ] Compile gaps and unclear transactions for your own review or tax adviser.

An editorial record-keeping aid for users with a connection to Germany. No individual tax or legal advice. Provider reporting and data-exchange dates do not determine your personal tax-return deadline.

Full guide: https://jmrkt.com/en/guides/dac8-crypto-reporting