USDC Surpasses $100 Trillion in On-Chain Transaction Volume

USDC, the stablecoin from Circle, has reached an unprecedented milestone. The coin's cumulative on-chain transaction volume has surpassed $100 trillion, a figure that puts it ahead of last year's US GDP of roughly $28 trillion.

This achievement marks a remarkable acceleration for USDC, which had only cleared $80 trillion in lifetime volume as recently as April 2026. By early July, the coin had already passed $90 trillion.

Circle's Q2 2026 results show the company's flagship stablecoin experiencing a 151% year-over-year increase in on-chain volume, reaching $14.8 trillion for the quarter alone. The first half of 2026 accounted for over $36 trillion in transfers, with USDC settling approximately $32 trillion in adjusted transfer volume through August 2026.

This represents roughly 77% of total stablecoin activity across the market, outperforming USDT's $8 trillion in the same period. Furthermore, USDC boasts an annualized turnover of 741x, meaning each dollar of USDC supply was effectively used 741 times over the course of a year.

Most of this volume, around 67%, flows through Base and Ethereum, driven by DeFi protocols, flash loans, and liquidity pool rebalancing operations. However, Circle's business model relies heavily on reserve income, with interest earned on US Treasury bills and cash backing the supply accounting for around 95% of Q2 revenue.

This structure provides relatively stable and predictable income but means Circle's fortunes are tightly coupled to interest rates, which could compress margins if there is a meaningful rate-cutting cycle.