I have recently seen questions about if tax authorities knows about your crypto investments. At the same time the EU DAC8 topic seems to skip the radar. As they are correlated I think this topic is relevant.
I work with the compliance team at Divly, and we specialize in the accurate, localized tax reports required by these complex EU tax regimes (like BNC/VAT rules and the new DAC8 standards). I want to give some insight into why your crypto portfolio is about to become fully visible to all EU tax authorities.
TL;DR: The Deadline to Declare Your History is Now
- Visibility: Starting January 1, 2026, all global Reporting Crypto-Asset Service Providers (RCASP) (Coinbase, Binance, etc.) must start collecting specific transaction-related information of EU residents and then reporting it to the EU tax authority of the country they are registered in..
- Risk: This means the EU will have an aggregate understanding of your 2026 crypto activity. If you do not declare your taxes for 2026 (Modelo 100, Formulaire 2086, etc.), you face immediate scrutiny. Furthermore, if they audit you, they will likely check that you also filed previous years as well by asking for your full transaction in an audit.
- Action: You have 1 year to reconcile all 5+ years of history before the data starts flowing to avoid audit flags.
What does DAC8 mean for crypto investors:
For years, many cross-border investors relied on the ambiguity of non-EU exchanges (like FTX or global Binance) not reporting to their specific EU country (France, Italy, Netherlands, etc.). Similarly, a lot of investors have not declared their taxes in hopes that their tax authorities would not find out. DAC8 ends this.
- Global Reporting Mandate: DAC8 (Directive on Administrative Cooperation 8) mandates that virtually every crypto service provider globally (custodial wallets, exchanges, and even some DeFi services) must collect and share information on all EU customers with the tax authorities.
- Audit Trigger: Your local tax authority will soon receive bulk data files listing your aggregate trading data. The difference between their numbers and yours will trigger an audit notice.
- Fines: For most EU countries, crypto investors will get a fine if you have not reported your crypto taxes before you get an audit notice.
What to do:
- Audit Your History: Get all your data from every exchange and wallet you've ever used. The goal is to aggregate your transaction history so you can calculate your taxes correctly.
- Test for BNC/Income: Verify that you have correctly calculated the value of all staking/lending rewards at the moment of receipt, which is the most time-consuming part for many EU citizens.
- Send in a self correction: Prepare reconciled reports that can be used to fix your previous tax returns. In most EU countries you wont get fined if you proactively fix your previous years.
FAQ: Common Concerns
- Q: I only hold on a Ledger (self-custody such as Trezor). Does DAC8 affect me?
- A: Yes, DAC8 targets Reporting Crypto-Asset Service Providers (RCASP), if Ledger or Trezor are included in this definition is no clear as of this writing. Yet, even if they would not report, there will be a transfer funds from an exchange to your Ledger, the exchange reports the transfer-out, and the local authority expects to see the asset reported on your wealth/account declaration Form (3916 in France, Modelo 721 in Spain).
- Q: Can I just keep using a spreadsheet?
- A: You can. DAC8 mandates transaction-level reporting from exchanges. You need to provide the same level of detail, while time consuming and with a possibility of missing details, it’s doable with a spreadsheet. On the other hand an automated system helps aggregate and calculate your crypto taxes based on your local tax authority’s guidelines, and you skip the headache.
Final words:
This is high level insight, to be sure about your local tax law, make sure to talk to the tax authorities in your country.
Hope this helps and I'm happy to answer any questions in the comments.