Circle’s USDC Activity Hits $32 Trillion, Yet 95% of Revenue Comes from Reserve Yields

Circle’s stablecoin USDC moved an adjusted $32 trillion in 2026, according to Coin Metrics, but the company’s earnings remain overwhelmingly tied to the interest earned on the reserves backing the token.

Volume vs. Revenue

Coin Metrics’ August measurement shows USDC supply turned over 741 times annually, indicating high on‑chain activity. Circle’s second‑quarter filing, however, reveals that reserve income supplied $667.7 million of its $701.3 million total revenue – 95.2% – while transaction fees contributed only $5.3 million.

How the Transfer Volume Is Generated

The bulk of the $32 trillion stems from crypto‑market plumbing:

• On Base, 69% of USDC moves relate to decentralized‑exchange (DEX) liquidity provision and 23% to flash loans.
• On Ethereum, flash loans account for 65% of the volume.
• These activities involve repeated rebalancing of liquidity and short‑lived borrowing, which inflate gross transfer numbers without corresponding fee revenue.

Coin Metrics estimates that 8% of Base volume and 33% of Ethereum volume remain untagged, potentially covering payments, bridging, or treasury actions, but these are not clearly identified as commercial transactions.

Circle’s Cost Structure

In Q2, Circle recorded $410.4 million in distribution and transaction costs, including $324.6 million linked to Coinbase. After these costs, net operating leverage remains modest, underscoring that high transfer volume does not translate directly into profit.

Arc: A Test of Direct Fee Capture

Circle’s upcoming blockchain infrastructure, Arc, aims to create a visible fee surface by denominating gas fees in USDC. The public mainnet is slated for September 16, with over 100 builders already on the private testnet. Success will be measured by whether Arc generates recurring transaction or subscription revenue beyond the existing reserve‑income model.

The ARC token presale raised about $242 million, recorded as deferred revenue, not current earnings, and its future impact on Circle’s revenue mix remains uncertain.

Revenue Sensitivity to Yield

Circle’s filing models a 100‑basis‑point shift in average reserve yield as altering reserve income by roughly $737 million over the next year, highlighting the company’s exposure to interest‑rate movements.

Until Arc or another product converts a larger share of USDC’s on‑chain activity into durable fees, Circle’s financial performance will continue to depend primarily on the amount of USDC in circulation and the yields earned on its reserves.