Since 1 January 2026 crypto-asset service providers serving EU users collect each customer's tax residence and tax ID and report transactions and transfers every year. The 2026 data is reported and exchanged in 2027. Non-EU countries such as the UK and Switzerland follow through the OECD framework. Self-custody is not reported directly, but transfers to it are. Investors with undeclared gains should correct before the data arrives.
Your exchange now reports to your tax office
Until 2026 a tax office learned about crypto mainly from what the taxpayer declared. Under DAC8, crypto exchanges, brokers and other service providers that serve EU customers collect each customer's tax residence and tax identification number and report every year what was bought, sold, exchanged and transferred, with values in euros.
The data for 2026 is reported in 2027 and exchanged between EU tax authorities. Non-EU countries join through the OECD framework. For investors with undeclared gains or old holdings, the window for a voluntary correction is now.
Crypto-asset service providers
EU and non-EU platforms serving EU users.
Transactions and transfers
Exchanges, sales, transfers out, with values.
2026 data, reported in 2027
Annual reporting after that.
Your residence country
Through automatic exchange.
What DAC8 changes
| Element | Rule |
|---|---|
| Scope | Crypto-asset service providers authorised under MiCA, and non-EU providers serving EU users, which must register in one member state |
| Customer data | Name, address, date of birth, tax residence and TIN; self-certification by the customer |
| Reported | Exchanges between crypto and fiat, between crypto-assets, retail payment transactions and transfers, per type of asset, with values |
| Timing | Applies from 1 January 2026; first reports in 2027 for 2026 |
| Also in DAC8 | E-money and central bank digital currencies added to bank account reporting; exchange of cross-border rulings for high-net-worth individuals |
| Sanctions for customers | Member states set penalties; providers must refuse or restrict service if the customer does not provide the data after reminders |
Law and practice: Council Directive (EU) 2023/2226 (DAC8), amending Directive 2011/16/EU, transposed in the Netherlands, Belgium and Luxembourg from 2026; Regulation (EU) 2023/1114 (MiCA) for crypto-asset service providers; OECD Crypto-Asset Reporting Framework (CARF). In Spain, holdings abroad above EUR 50,000 are also declared on Form 721.
Getting ready before the data arrives
- InventoryWallets, exchanges, staking, DeFi and holdings through companies.
- Tax positionGains, losses and holdings per year under your residence country's rules.
- Gap checkWhat was declared and what will be reported.
- CorrectionVoluntary disclosure or amended returns where needed.
- StructureHolding through a company, Luxembourg life insurance or other structures, where it makes sense.
- ProvidersFor crypto businesses: MiCA authorisation and DAC8 registration and reporting.
A Dutch resident has traded crypto since 2019 on an EU exchange and holds EUR 600,000 on it. Box 3 was declared only partly. We reconstruct the holdings on 1 January of each year from the exchange data, file corrections for the open years before the 2026 data is exchanged, and move part of the portfolio to a structure that fits his plans.
DAC8: what will the tax office see?
The result updates with each answer.
DAC8: what will the tax office see?
Five questions about your crypto. You see what is reported, to whom, from when, and what to do now.
Exchanges report from 2026.
Between tax authorities from 2027.
Before the data arrives.
MiCA licence and DAC8 reporting.
DAC8 crypto reporting: frequent questions
What is DAC8?
The eighth amendment to the EU Directive on Administrative Cooperation (Directive 2023/2226). From 1 January 2026 crypto-asset service providers serving EU users must collect their customers' identity and tax residence and report transactions each year to the tax authorities, which exchange the data with the customer's residence country.
When is the first report?
Data for 2026 is reported in 2027, by the end of September at the latest, and then exchanged between EU tax authorities.
Does DAC8 cover self-custody wallets?
Not directly: it covers reporting service providers. But transfers from an exchange to an external wallet are reported, so the tax authority sees that the assets left the platform.
What if I live outside the EU?
The OECD Crypto-Asset Reporting Framework (CARF), on which DAC8 is modelled, is being implemented by many non-EU countries, including the UK and Switzerland, with exchanges starting from 2027 and later for others such as the UAE. Platforms will report about you to your residence country.
Should I correct past years?
If gains or holdings were not declared, a voluntary correction before the data arrives is usually cheaper than an audit afterwards. Penalties and procedures differ per country.