Greece has joined an OECD multilateral agreement to automatically share cryptocurrency transaction data, aiming to curb tax evasion.
Under the new system, Greek tax authorities (AADE) will receive information on foreign crypto transactions by Greek taxpayers without requests, creating full transparency across participating countries. Every jurisdiction in the agreement will report crypto movements of its taxpayers to others, forming a European-wide network.
The Finance Ministry is also planning to tax cryptocurrency gains, with one scenario proposing a 15% levy on profits from crypto sales.
The AADE, starting 1 January 2026, will collect and transmit transaction data for both individuals and legal entities, covering purchases, sales, and transfers of digital assets. The framework mirrors the Common Reporting Standard (CRS) already applied to bank accounts and investments.
Crypto exchanges, brokers, and service providers—called Declaring Crypto Service Providers—must implement strict KYC/AML procedures, identify users’ tax residence, and report detailed transaction information.
The shared data will include:
-
User identity and tax ID numbers (AFM)
-
Types of cryptocurrencies
-
Total purchases and sales against fiat currency
-
Exchanges between different cryptocurrencies
-
Transfers to or from wallets outside recognised providers
Transactions exceeding $50,000 in goods or services will receive particular scrutiny. The system will allow tax authorities to gain a complete view of each user’s crypto activity, facilitating audits and cross-checks with tax returns. Greek residents trading on foreign platforms will now automatically be reported to the AADE, while foreign users of Greek platforms will be reported to their home countries.
The framework also ensures compliance with GDPR, limiting access and notifications to what is necessary for tax purposes. Data will be retained for at least five years, with strict procedures in place for security breaches.
Authorities hope this system will reduce tax evasion and align crypto taxation with traditional investment products.
