OECD Crypto Tax Reporting Rules Capture Only 14% of $457B in Taxable Onchain Activity

Potentially taxable onchain cryptocurrency activity reached at least $457 billion globally in 2025, yet international reporting rules designed to give tax authorities visibility into those transactions captured only about 14% of that total, according to a new analysis from blockchain intelligence firm Chainalysis.

The report, released Aug. 26, examined realized gains, income from mining, staking, lending and gambling, and crypto-denominated payments across six major blockchains: Bitcoin, Ethereum, Solana, Tron, BNB Smart Chain and Base. Activity inside centralized exchanges was excluded because trades, staking and lending conducted within their internal systems do not appear on public blockchains.

Chainalysis described the $457 billion figure as a "lower boundary," noting the study did not cover every blockchain, transaction type or trading venue.

The United States generated the largest share of any single country at an estimated $112.6 billion, broken down into $64.6 billion in payments, $30.1 billion in gains and $17.9 billion in income. North America led all regions with $134.6 billion, ahead of the European Union at $125.1 billion and East Asia at $54.7 billion.

Germany followed the US among individual countries with $24.1 billion, while China accounted for $21 billion and the United Kingdom recorded $19.4 billion. India ranked fifth at $19 billion, followed by Brazil at $16.1 billion, Canada at $15.1 billion and Japan at $13.2 billion.