Circle revenue driven by reserve interest despite rising USDC transaction volume

Circle’s revenue model for its stablecoin, USDC, is primarily driven by interest earned on reserves rather than transaction fees. In the second quarter of 2026, 95.2% of Circle’s $701.3 million in revenue and reserve income was derived from reserve income, totaling $667.7 million. In contrast, transaction revenue accounted for only $5.3 million.

While USDC on-chain transaction volume saw significant growth, increasing 151% year-on-year to $14.8 trillion, the company’s profitability remains closely tied to interest rates. USDC circulation reached $73.3 billion by the end of Q2 2026, a 19% year-on-year increase. Although higher circulation expanded reserve income by approximately $147.4 million, falling interest rates reduced that gain by roughly $113.9 million as average reserve yields declined by 66 basis points.

Coin Metrics noted that while USDC transfer volumes are massive—with estimated adjusted transfer volumes reaching $32 trillion in 2026—much of this movement stems from market mechanics like arbitrage and exchange rebalancing rather than commercial payments. Consequently, Circle’s monetization is heavily influenced by the monetary policy of the Federal Reserve.