Chainalysis: $457B in Taxable Crypto Activity Escapes CARF Reporting

Blockchain analytics firm Chainalysis has estimated that potentially taxable onchain crypto activity reached at least $457 billion globally in 2025, while the OECD's Crypto-Asset Reporting Framework (CARF) captures only 14% of it. The United States accounted for $112.6 billion of the total, with North America leading all regions at $134.6 billion, followed by the European Union at $125.1 billion. Chainalysis says the remaining 86% of taxable activity occurs outside CARF's scope, including transactions on decentralized exchanges, peer-to-peer transfers, onchain income streams, and crypto-denominated payments.

CARF, developed by the OECD in 2022, requires covered crypto service providers to collect customer and tax residency information and report transaction data to domestic authorities, which can then share the data across borders. Data collection under the framework began on Jan. 1, 2026, across 48 jurisdictions including the United Kingdom and the EU. However, the framework was designed primarily around intermediaries that facilitate crypto transactions as a business, according to Colby Mangels, a former OECD adviser who worked on CARF. Much of decentralized finance falls outside the reporting perimeter because there is often no centralized operator or custodial relationship on which to impose requirements.

Chainalysis's taxable activity estimates span six major blockchains and include realized gains, income from mining, staking and lending, and crypto-denominated payments. The figures exclude trading and other activity conducted within centralized exchanges. Chainalysis's findings suggest that as regulators develop rules for decentralized platforms, tax authorities are closely monitoring anti-money laundering efforts to determine when DeFi operators should be treated as regulated crypto service providers. The report highlights a significant gap between onchain economic activity and the reach of existing international tax-reporting frameworks, a gap that could widen as DeFi adoption grows.