Adjusted $USDC transfer volume reached $32 trillion in 2026 through Coin Metrics’ August measurement, with each dollar of supply changing hands 741 times on an annualized basis. The figures highlight the stablecoin’s reach across crypto markets and the intensity of its use for settlement.
However, Circle’s second-quarter revenue remained overwhelmingly dependent on yield earned from the assets backing $USDC. For the three months ended June 30, reserve income contributed $667.7 million of Circle’s $701.3 million in total revenue and reserve income, or 95.2%. Transaction revenue was just $5.3 million.
That contrast is central to Circle’s business model: transfer volume signals usage, but the amount of $USDC in circulation and the yield on its reserves still determine most of the company’s revenue.
How $USDC transfer volume is generated
Coin Metrics described the $32 trillion figure as adjusted $USDC transfer volume through its August 2026 analysis. It does not represent consumer payments, unique economic settlement or a full-year total. Its annualized velocity estimate measures how frequently the stablecoin supply moves relative to its size.
The composition of that movement is important. Coin Metrics’ bottom-up analysis examined raw transfer volume through tagged lending contracts, decentralized exchange pools and known exchange wallets. On Base, 69% of $USDC volume involved DEX liquidity provision and 23% involved flash loans. On Ethereum, flash loans accounted for 65% of volume.
These categories reflect genuine demand from crypto markets. Liquidity rebalancing, collateral transfers and arbitrage help markets operate, while producing enormous gross transfer totals without a corresponding increase in net capital moved, purchases or fees collected by Circle. A liquidity position may be rebalanced repeatedly, moving the same dollars many times, while a flash loan is borrowed and repaid within a single transaction.
Coin Metrics also characterized its tagged shares as lower-bound estimates. Approximately 8% of Base volume and 33% of Ethereum volume remained outside the identified categories. That residual may include payments, bridging, treasury activity and other forms of settlement, but it cannot safely be classified as commercial payments.
The data offers a more precise interpretation of $USDC velocity. The stablecoin is deeply embedded in crypto’s financial infrastructure, but headline transfer volume is not the same as a revenue ledger.
Why circulation matters more than velocity to Circle
Circle’s own second-quarter activity metrics reinforce that distinction. The company reported that $USDC onchain transaction volume rose 151% year over year to $14.8 trillion, while period-end circulation increased 19% to $73.3 billion. Total revenue and reserve income rose 6.6% to $701.3 million.
The Coin Metrics and Circle figures are not directly interchangeable. Coin Metrics reports adjusted transfer volume, while Circle defines its figure as native and canonically bridged $USDC processed across supported chains other than Solana. Both measures demonstrate scale, but neither indicates that Circle collects a fee on every transfer.
Circle’s SEC filing shows how growth in circulation translated into revenue. The company attributed approximately $147.4 million of its year-over-year reserve-income improvement to a 25.2% increase in average daily $USDC circulation. A 66-basis-point decline in average yields offset about $113.9 million of that increase, leaving reserve income up by roughly $33.5 million.
That bridge explains why circulation currently matters more to Circle’s revenue than velocity. A larger $USDC supply expands the reserve base that earns interest. The same dollar moving hundreds of times does not automatically create hundreds of revenue events for Circle.
The filing also distinguishes reserve income from retained economics. Circle recorded $410.4 million in distribution and transaction costs during the quarter, including $324.6 million in Coinbase-related distribution costs. Including other costs, the total reached $412.5 million. Coin Metrics’ transfer-volume total does not directly determine those expenses, but their scale shows why gross reserve income should not be treated as operating margin.
Interest rates remain Circle’s key near-term sensitivity
Interest rates remain the larger near-term variable for Circle. Holding circulation and reserve allocation constant, the company modeled a 100-basis-point move from June’s average yield as changing reserve income by approximately $737 million and distribution and transaction costs by about $360 million over the following 12 months.
The analysis was a hypothetical sensitivity rather than guidance. Its scale nevertheless shows how far Circle remains from a revenue mix driven primarily by transaction fees.
Arc’s test for recurring network revenue
Arc is Circle’s clearest effort to capture more economic activity through infrastructure it helps operate. In its latest Aug. 5 statements, Circle said Arc was in private mainnet with more than 100 builders and that public mainnet was scheduled for Sept. 16. At the time of those statements, the public launch had not occurred.
Arc’s design connects the network directly to $USDC usage. Its gas and fee system denominates transaction fees in $USDC, creating a dollar-denominated charge whenever the network processes activity. That provides a more visible fee surface than ordinary $USDC transfers across third-party blockchains.
Still, recurring revenue from Arc remains unproven. Arc’s documentation does not establish how much gas-fee revenue Circle will retain. Circle’s Aug. 5 list of builders and prospective integrations also does not prove transaction volume, commercial demand or margins after the scheduled public launch.
The key post-launch question will be whether Arc’s activity appears in Circle’s transaction and service revenue, rather than only in network usage statistics.
The ARC token presale is a separate economic event. Circle agreed to sell 807.5 million tokens for approximately $242.2 million, but its second-quarter filing recorded the proceeds as deferred revenue rather than recognized quarterly revenue. The prospective token is linked to a possible future transition from proof of authority to proof of stake or delegated proof of stake. The timing and terms of that transition remain conditional.
As a result, treating the presale as evidence that Arc has already diversified Circle’s operating revenue would conflate financing and future performance obligations with recurring network economics.
Arc does not need to replace reserve income immediately to become strategically important. It needs to demonstrate that Circle can capture a repeatable share of activity that $USDC already enables elsewhere.
That creates a clear scorecard after Sept. 16: whether public mainnet launches as scheduled, which transaction types dominate, whether applications produce sustained activity beyond mechanical liquidity loops, and whether Circle begins reporting material growth in transaction or subscription and service revenue. Retained economics will matter as much as gross fees.
$USDC’s $32 trillion year-to-date transfer total demonstrates substantial reach and liquidity. Coin Metrics’ breakdown shows why the figure should not be mistaken for payments revenue. Until Arc or another Circle product converts more of that movement into durable fees, Circle’s business will remain governed primarily by the amount of $USDC outstanding, the yield on its reserves and the portion of that income left after distribution costs.
