Chainalysis: $457B in Crypto Activity Taxable, CARF Misses Majority
OECD's crypto tax reporting framework covers only 14% of identified transactions, report reveals.
1Global Crypto Tax Gap
Chainalysis estimates at least $457 billion in crypto transactions were potentially taxable globally in 2025. The figure includes income from mining, staking, lending activities and crypto-denominated payments, excluding centralized exchange trades. The U.S. accounted for $112.6 billion, leading regional contributions. North America's $134.6 billion surpassed the EU's $125.1 billion in taxable activity across six major blockchains.
2CARF's Limited Scope
The OECD's Crypto Asset Reporting Framework (CARF), implemented in 48 jurisdictions including the UK and EU since January 2026, covers only 14% of identified taxable transactions. CARF mandates crypto service providers to report customer transaction data to tax authorities. Former OECD adviser Colby Mangels notes the framework was designed around centralized intermediaries facilitating crypto transactions as a business.
3Reporting Gaps
86% of taxable onchain activity falls outside CARF's scope, including decentralized exchanges (DEXs), peer-to-peer transfers and onchain income streams. The framework's focus on intermediaries leaves most DeFi activity unreported. Mangels explains CARF requires a centralized operator or custodial relationship to impose reporting requirements, which most DeFi platforms currently lack.
4Geographical Distribution
North America led with $134.6 billion in taxable crypto activity, followed by the European Union at $125.1 billion. The report analyzed transactions across six major blockchains (Bitcoin, Ethereum etc.). Regional variations reflect differing crypto adoption rates and regulatory approaches. The U.S. alone accounted for $112.6 billion of the global total.
5How CARF Operates
Under CARF, in-scope crypto providers collect customer tax residency information and report transaction data to domestic authorities for international sharing. While designed to combat tax evasion, the system excludes most decentralized finance activity. The framework represents the first major international effort to standardize crypto tax reporting, though significant gaps remain.
6DeFi's Regulatory Gray Area
Most DeFi platforms operate without centralized operators or custodial relationships, placing them outside CARF's reporting requirements. Mangels indicates tax authorities are monitoring anti-money laundering developments to determine when DeFi operators should be treated as regulated service providers. This regulatory uncertainty leaves most DeFi activity untracked for tax purposes.
7Future Regulatory Moves
Experts anticipate regulators will develop specific rules for decentralized platforms to close tax loopholes. SEC's efforts to regulate DeFi operators could eventually expand CARF's coverage. Currently, most DeFi exists beyond traditional financial oversight. The pace of regulatory clarity will significantly impact future crypto tax collection capabilities globally.
8Critical Implications for Tax Revenue
Chainalysis' findings reveal governments are missing substantial potential tax revenue from crypto markets. As crypto asset markets grow, improving international tax cooperation mechanisms becomes crucial. Regulatory developments in DeFi will particularly determine future tax collection effectiveness, with current systems capturing only a fraction of taxable activity.