Cross-border crypto data collection and tax reporting frameworks

Recent announcements from multiple jurisdictions highlight an accelerating push to collect and exchange crypto-related tax information across borders. Argentina’s federal revenue agency ARCA issued General Resolution 5804/2025 requiring digital platforms and payment service providers to submit monthly reports that include virtual asset balances, tax identification numbers, participant roles, nationalities and transaction details. The resolution takes effect immediately, with the most significant reporting obligations kicking in from May 2026 and reporting thresholds set at ARS 50 million for individuals and ARS 30 million for legal entities. The rules explicitly name international exchanges such as Binance, Bybit and Coinbase as well as Argentine platforms including Lemon and Ripio, which must build infrastructure to deliver automated monthly reports.

Separately, Bulgaria’s National Assembly approved amendments transposing EU DAC8 requirements into national law, obliging crypto asset service providers to register and supply customer identities, tax residency details and transaction records to the National Revenue Agency. The Bulgarian changes cover purchases, sales, transfers, exchanges and transactions involving fiat or other crypto assets, including crypto-to-crypto operations; the amendments passed with 149 votes in favor, none against and 10 abstentions. Under the EU framework, providers began collecting reportable information from Jan. 1, 2026, with the first full-year reports due in 2027 and cross-border exchanges of that data scheduled for subsequent periods.

On the international front Argentina has formally committed to the OECD’s Crypto-Asset Reporting Framework (CARF) and pledged to begin automatic exchanges of crypto transaction information by September 2029, joining 76 other jurisdictions that have committed to CARF. CARF requires covered providers—primarily centralized exchanges and brokers—to collect identifying information and transaction data that can be exchanged between tax authorities; it does not itself create new taxes, and Argentina must still incorporate the standard into domestic law before exchanges commence. Data collection already began on Jan. 1, 2026 in 48 jurisdictions, and many participating authorities plan their first exchanges in 2027 or later.

These developments show a convergence of domestic reporting rules and international information-exchange frameworks, placing centralized intermediaries at the center of compliance. At the same time, existing analyses indicate that a substantial share of onchain activity—originating from decentralized exchanges, self-custody wallets, peer-to-peer transfers and certain onchain income—may remain outside the practical reach of reporting providers, underscoring that implementation, legal harmonization and technical systems will determine how effectively tax authorities can use the incoming data.