DAC8 Explained: What EU Crypto Tax Reporting Means for You From 2026

Photo: Euro Pictures / Wikimedia Commons, CC BY 2.0

If your crypto app has recently asked for your tax identification number or your country of tax residence, you have met DAC8. It is the EU's new tax transparency rule for crypto-assets, and it has applied since 1 January 2026. Exchanges and brokers now collect data about their EU customers, and tax authorities will start sharing it with each other in 2027.

This guide explains in plain language what DAC8 is, who has to report, what data is collected, the key dates, how it connects to the OECD's global framework, and what it means for an ordinary Bitcoin buyer in Europe.

Important disclaimer

This article is general information about EU rules. It is not financial, investment, legal or tax advice. Tax law differs between countries and changes over time, so check the official sources linked below and, for your own situation, ask your tax office or a qualified tax adviser.

What is DAC8?

DAC8 is the short name for Council Directive (EU) 2023/2226 of 17 October 2023. It is the eighth amendment of the EU's Directive on Administrative Cooperation in the field of taxation (Directive 2011/16/EU), which is why it is called "DAC8". It was published in the Official Journal on 24 October 2023.

The idea is simple: EU countries already exchange information automatically about bank accounts and online platform income. DAC8 extends that system to crypto-assets. According to the European Commission, the goal is to fight tax fraud, tax evasion and tax avoidance, because the decentralised and cross-border nature of crypto has made it hard for tax authorities to check that income and gains are declared.

Because DAC8 is a directive, each Member State had to turn it into national law by 31 December 2025 and apply it from 1 January 2026. That is different from MiCA, a regulation that applies directly. The two are linked, though: DAC8 builds on MiCA's definitions of crypto-assets and service providers. Its scope also covers crypto-assets issued in a decentralised way, stablecoins including e-money tokens, and certain NFTs.

Who has to report?

The obligations fall on Reporting Crypto-Asset Service Providers (RCASPs), not on you. Under the directive, these include:

• Providers authorised under MiCA, or allowed to offer crypto services after notifying a Member State under MiCA's Article 60 (for example certain banks and investment firms).
• Other crypto-asset operators that are not MiCA-authorised but have a link to the EU, such as tax residence, incorporation, management or a regular place of business in a Member State.

Operators that serve EU customers without a MiCA authorisation must register in one Member State for DAC8 purposes. Reporting covers both EU residents of other countries and residents of the provider's own country.

What data is collected?

For each customer who is a reportable user, the provider reports:

• Identity: name, address, Member State(s) of tax residence, tax identification number(s) (TIN) and, for individuals, date of birth. Place of birth is only required where national law asks for it.
• Totals per crypto-asset type for the year: the aggregate gross amount paid or received when buying or selling against fiat money such as euros, plus the number of units and of transactions.
• Crypto-to-crypto swaps: aggregate fair market value, units and number of transactions.
• Transfers: crypto moved to or from your account, including transfers to wallet addresses not known to belong to another service provider or financial institution, which is typically a self-hosted wallet.
• Large retail payments: payments for goods or services in crypto worth more than USD 50,000 (or the equivalent).

Two points are worth noticing. First, the reports are annual totals, not a copy of every trade. Second, the list contains amounts and values, not your profit or loss. Working out your taxable gain is still your job.

Why your exchange is asking for your tax ID

DAC8 requires providers to obtain a self-certification of your tax residence when you open an account. For customers who already had an account, the deadline is 1 January 2027. The provider must also check that your answer is reasonable against the documents it already holds from identity checks.

Ignoring the request has consequences. If you do not provide the required information after two reminders following the first request, and not earlier than 60 days, the provider must prevent you from carrying out reportable transactions. In practice: answer these requests through the official app or website, and never through links in unexpected emails or messages. Scammers love to copy "tax update" notices. Our exchange account security checklist explains how to check that a message is genuine.

The DAC8 timeline

Date	What happens
17 October 2023	Council adopts Directive (EU) 2023/2226 (published 24 October 2023).
31 December 2025	Deadline for Member States to transpose DAC8 into national law.
1 January 2026	Rules apply. Providers collect data on 2026, the first reporting year.
1 January 2027	Deadline for providers to obtain self-certifications from existing customers.
During 2027	Providers report 2026 data to their national tax authority (check domestic deadlines).
By 30 September 2027	First exchange of 2026 data between EU tax authorities, then every year within nine months after year-end.

How DAC8 relates to the OECD's CARF

DAC8 is the EU version of the OECD's Crypto-Asset Reporting Framework (CARF), a global standard for exchanging crypto tax information, developed with the G20. The Commission notes that OECD commentaries and FAQs on CARF can help interpret DAC8 where the two texts are aligned.

CARF reaches beyond the EU. According to the OECD Global Forum's commitment list (last updated 14 September 2026), 46 jurisdictions plan first exchanges by 2027, 27 by 2028 and 4 by 2029, including the United States. So holding coins on a platform outside the EU will not necessarily keep the data away from your tax office.

Germany as an example

Germany implemented DAC8 with the Kryptowerte-Steuertransparenz-Gesetz (KStTG) of 22 December 2025, in force since 24 December 2025. According to the Federal Central Tax Office (BZSt), providers must send 2026 data by 31 July 2027 and the BZSt forwards it by 30 September.

The tax rules themselves did not change. The Federal Ministry of Finance (BMF) letter of 6 March 2025 says crypto held privately counts as "other assets" under §23 EStG. Gains are taxable if you sell or swap within one year of buying, and each swap restarts the one-year period. Gains stay tax-free if your total gains from all private sales in the calendar year are below €1,000 (€600 until 2023). This is an exemption limit (Freigrenze), so reaching €1,000 makes the whole gain taxable. The BMF also says that if you use a foreign exchange, you must download your transaction histories regularly, and missing records, for example after an exchange's insolvency or a hack, count against you.

What DAC8 means for you: a practical checklist

1. Answer tax residence requests honestly, but only through the provider's official app or website.
2. Keep your own records: dates, amounts, prices in euros, fees and wallet transfers for every buy, sell and swap.
3. Download annual statements and full transaction histories each January, and again before you close an account.
4. Document transfers between your own wallets, so they are not mistaken for sales or payments.
5. Know your own country's tax rules. DAC8 harmonises reporting, not tax rates, exemptions or holding periods.
6. Declare taxable gains yourself. DAC8 does not file anything for you, and your return should match what your providers report.

Bottom line

DAC8 does not create a new crypto tax. It makes crypto transactions visible to tax authorities. Since 1 January 2026, EU crypto service providers collect your identity, tax number and yearly totals, and the first data will be exchanged between EU tax authorities by 30 September 2027, with many non-EU countries following through CARF. For beginners, the sensible response is calm and simple: give your provider accurate tax details, keep good records, and declare what your country's rules require.

Sources

• EUR-Lex: Council Directive (EU) 2023/2226 (DAC8)
• European Commission: DAC8 overview, timeline and scope
• OECD Global Forum: Jurisdictions committed to implement the CARF (PDF, updated 14 September 2026)
• BZSt: CARF/DAC8 procedure under the KStTG (German)
• BMF: Letter of 6 March 2025 on the income tax treatment of crypto-assets (German, PDF)

Advice Me publishes general information only. It is not financial, investment, legal, or tax advice. Always do your own research and consult a qualified professional before making financial decisions.