DAC8: Your Guide to EU Crypto Tax Rule

DAC8 is Council Directive (EU) 2023/2226, the eighth amendment to the EU's Directive on Administrative Cooperation. The Council adopted it on October 17, 2023, and it has been in effect since January 1, 2026.

The amendment requires Reporting Crypto-Asset Service Providers to collect identifying and transaction data on EU-resident users and report it annually to a national tax authority, which then shares it with the tax authority of the user's country of residence. Definitions of what counts as a crypto-asset are set out in MiCA, so the scope aligns with the EU's licensing regime.

DAC8 is the EU's implementation of the OECD's Crypto-Asset Reporting Framework. If you have read about CARF, DAC8 is what CARF looks like once it becomes binding EU law. It also extends beyond crypto, amending the wider directive to cover e-money products and central bank digital currencies.

Any provider that carries out exchange transactions for users tax-resident in an EU member state, regardless of where the provider is incorporated, must report. That includes exchanges, brokers, dealers, certain wallet providers, and some DeFi platforms.

Non-EU platforms are not exempt. A provider without MiCA authorisation that serves EU users registers once with a competent authority in a single member state, and that registration covers all 27.

Unlike earlier reporting directives, DAC8 also covers domestic users. A German resident using a German exchange is reported, not only cross-border holders.

For each reportable user: name, address, member state of residence, taxpayer identification number, and, for individuals, date and place of birth.

For transactions, aggregated per crypto-asset per year: acquisitions and disposals against fiat, crypto-to-crypto exchanges, transfers, and retail payment transactions. Reports show the gross amounts paid or received, the number of units, and the number of transactions.

There is no de minimis threshold. Small accounts and small trades are reported the same as large ones.

• January 1, 2026 — data collection began. Self-certification required from new users at onboarding.

• During 2026 — platforms must obtain self-certifications from users who opened accounts before January 1, 2026.

• January through September 2027 — RCASPs file their first reports, covering calendar year 2026. The exact deadline is set nationally and varies. Check your platform's member state of registration.

• September 30, 2027 — deadline for member states to exchange the 2026 data with each other. This date is fixed EU-wide.

You have no filing obligation under DAC8. The reporting runs from your platform to your tax authority, and the penalties in the directive land on providers.

What changes is verification. From 2027, your national tax authority receives a per-asset summary of what you bought, sold, and moved during 2026, and can set it against what you declared. Discrepancies that used to go unnoticed now surface automatically.

Every platform serving EU residents must hold a valid self-certification for you: your tax residence jurisdiction and your taxpayer identification number. If a platform cannot obtain one, the rules require it to send reminders and then restrict your account. Ignoring those emails is how people lose access to an exchange.

Your own records need to reconcile with what the platform reports. The reported figures are gross amounts, not gains, so a platform report showing large volume does not mean you owe tax on that number. You still calculate gains under your own country's rules; DAC8 does not change that. Tax rates, exemptions, and holding periods remain national.

Reconciling your own numbers against what several platforms will each report is the part people underestimate. TokenTax imports from EU and non-EU exchanges, wallets, and on-chain activity, and produces one gain and loss figure per asset from the full history rather than per platform, so what you file matches what your tax authority receives.

All 27 EU member states are bound by the directive, but national transposition was delayed.

Member states had until December 31, 2025, to incorporate DAC8 into their domestic law, and 15 did so. On January 30, 2026, the European Commission opened infringement procedures against the other 12, Belgium, Bulgaria, Cyprus, Czechia, Estonia, Greece, Luxembourg, Malta, the Netherlands, Poland, Portugal, and Spain, by sending letters of formal notice with a two-month response window.

Most of those have since adopted implementing legislation, several of which have retroactive effect to January 1, 2026. Belgium adopted on March 12, 2026, Poland published on March 17, and Luxembourg adopted on March 19. A small number were still outstanding through mid-2026.

For users, late transposition changes very little. Data collection for 2026 proceeded regardless, and the September 30, 2027 exchange deadline is unaffected. What it does affect is the filing deadline your platform faces, since that is set nationally.

Verify current status against the EUR-Lex national transposition database before relying on any country-specific date.

Three frameworks get confused because they arrived together and cross-reference each other.

• MiCA is the licensing regime. It decides who may offer crypto services in the EU and under what conditions, and its definitions of crypto-assets are the ones DAC8 borrows.

• CARF is the OECD's global standard for crypto tax reporting, but it carries no force until a jurisdiction writes it into national law.

• DAC8 is the EU's implementation of CARF, plus amendments to the broader administrative cooperation directive. It is binding law across all 27 member states.

A platform can be MiCA-authorised and still have to register separately for DAC8 purposes, and a platform outside the EU entirely can fall under DAC8 by serving EU residents.

Answer your platform's self-certification requests. This is the only DAC8 step that requires anything of you directly, and the consequence of ignoring it is account restriction rather than a tax penalty.

Keep records that reconcile to what the platform will report. Buying on one exchange, moving coins to a wallet, and selling on another produces two platform reports, each showing only half the picture. Your records have to close this gap with dates, amounts, cost, and the values you used.

Check your declared figures against your exchange's annual statement before you file. From 2027 onward, your tax authority holds the same numbers.

If you have moved between EU member states, held crypto on a non-EU platform, or engaged in activities that might constitute business income rather than capital gains, consult a tax professional. DAC8 improves what tax authorities can see, but it does not simplify what you owe.

DAC8 is one national implementation of a global standard. More than 60 jurisdictions have committed to CARF, with most first exchanges landing in 2027 and 2028. The UK, Canada, Australia, Japan, and Singapore are all building equivalent regimes on the same OECD template.

If you hold accounts in more than one jurisdiction, multiple frameworks may apply to you, and they do not share deadlines or formats. Reporting rules converging does not mean tax rules are converging. Where you owe tax on a gain still depends entirely on your own residence.

Learn more in our helpful country guides.