Roughly $14.56 billion has left USDT and USDC since mid-May, most of it in June. The GENIUS Act's yield ban is finally showing up in the supply data.
Stablecoin supply has dropped by roughly $14.56 billion since mid-May, the market's worst contraction since TerraUSD collapsed in 2022. Total float peaked near $322.121 billion on 14 May and closed 2 August at $307.561 billion.
Tether's USDT fell from about $189 billion in early May to $183.216 billion by 2 August, a $5.8 billion decline in the largest dollar-pegged token. Circle's USDC dropped further in relative terms, from a March peak near $80 billion to $72.069 billion, wiping out about $8 billion. Together the two dominant issuers account for the entire net decline plus some.
The proximate cause is the GENIUS Act's yield ban. Since the federal law took effect in July 2025, permitted stablecoin issuers cannot pay any interest or yield to holders based solely on ownership of the token, whether in cash, tokens or "other consideration." The OCC's 376-page proposed rulemaking published on 25 February this year hardened the definition: even a coordinated third-party arrangement to route yield to holders now sits inside a rebuttable presumption of illegality. Platforms that were paying 4 per cent on USDC balances quietly turned it off.
June alone stripped $11.41 billion off the total, the steepest single-month contraction since Terra failed. That is not a coincidence. The compliance clock on the yield ban tightened as issuers and their institutional partners realised that "reward programmes" adjacent to issuance would face the same treatment as direct interest. Users chasing yield redeemed into T-bill funds, tokenised money-market products or DeFi lending vaults, all of which still pay carry.
The drop is roughly 4.5 per cent of the peak float, meaningful but not systemic. Neither Tether nor USDC has broken its peg, and there is no bank-run dynamic pulling collateral through the front door. What has happened is closer to a demand-side reallocation: capital that only sat in stablecoins because they paid interest has moved to instruments that legally can. Analysts covering the market have not called this a crisis; they have called it a reset. The distinction matters because a reset resolves at a new equilibrium, while a crisis has to be arrested.
The composition of the decline is worth watching. USDC fell faster than USDT even though Circle's product is more compliant with the GENIUS Act's letter — Circle holds bank charters, publishes attestations, and operates entirely inside the US regulatory perimeter. The obvious explanation is that USDC's user base was the one actually earning yield. Coinbase's 4 per cent USDC rewards programme sat inside the largest US retail crypto brokerage, and its curtailment removed the marginal reason to hold. Tether's holders, disproportionately offshore, were never receiving that yield in the first place and had less reason to redeem.
Reset or not, the shift removes an argument stablecoin issuers had spent years making. The pitch for stablecoin adoption in payments always leaned on the yield: hold dollars in a wallet, earn 4 per cent, spend when you want. Without the yield, the pitch collapses to holding dollars in a wallet with no interest, taking on smart-contract and issuer risk to do it. That is not a competitive product against a bank account, let alone a money-market fund. Products like MetaMask's mUSD account on Monad are already trying to route the same 4 per cent through a wallet that is not itself the issuer. Whether the OCC treats that structure as a coordinated arrangement will decide how much of the redeemed float ever comes back on-chain.
Six months of implementation still lie ahead. GENIUS-implementing rules for issuers must be finalised by 18 January 2027, and the OCC's proposed rulemaking is not yet final text. If the reallocation continues at even half of June's pace, the market will end 2026 well below $300 billion for the first time since early 2024. That would put stablecoin float back where it was before Circle went public and before Tether cleared $150 billion. The industry's rebound narrative has been adoption at scale. The current data shows contraction at scale.
