Nine days out, the stablecoin rulebook finally gets numbers

The GENIUS Act's statutory deadline is 18 July, nine days from today, and for the first time the six agencies racing to hit it have published proposals with actual thresholds attached rather than principles to be worked out later. That matters more than another product launch, because it is the document that decides who gets to issue a payment stablecoin in the United States and on what terms.

What the OCC is actually asking issuers to hold

The OCC's proposed rule, 12 CFR Part 15, sets a five million dollar minimum capital floor for a new stablecoin issuer seeking federal approval, with all major comment periods now closed as of 9 June [1]. Underneath that floor sits a three-tier liquidity ladder that will look familiar to anyone who has sat through a bank liquidity exam: at least 10% of outstanding tokens must be redeemable the same business day in Federal Reserve deposits or cash equivalents, at least 30% within five business days in high-quality liquid assets, and at least 60% held in standard reserve assets. The FDIC's parallel proposal confirms the part issuers have been quietly hoping regulators would soften, and did not: stablecoin holders get no deposit insurance, bank-affiliated issuer or not, and the no-yield prohibition on payment stablecoins stands. Once final rules publish, issuers get roughly 120 days to comply before the framework takes effect later this year. Large bank holding companies clear the capital floor without changing anything. Crypto-native issuers below it do not get a federal path at all, only a state charter under the ten billion dollar asset threshold, which is a narrower door with less interstate reach.

Regulators are pairing the stablecoin rulebook with an AI warning

The House Financial Services Committee's early-June hearing on prudential regulators put the two topics in the same room on purpose. Federal Reserve Vice Chair for Supervision Michelle Bowman told the committee that recent advances in AI have "dramatically accelerated the identification of cyber vulnerabilities across critical infrastructure, including the banking system" [2]. NCUA chair Kyle Hauptman called stablecoins payments infrastructure rather than a crypto question, and noted more than 80% of dollar stablecoin activity already happens outside the US. Nobody at that hearing proposed a new AI-specific rulebook. The OCC said it had revised model risk management guidance to avoid impeding banks' use of AI while it gathers more feedback, which is regulator-speak for: the stablecoin capital and liquidity numbers are close to final, the AI supervisory approach is not.

Read from the rails

The number worth sitting with is the 10% same-day redemption floor. I spent years on the operations side watching what happens when a liquidity buffer sized for the calm case meets a run that is not calm, and 10% is not a large buffer if the trigger for a run is an AI agent fleet reallocating balances in seconds rather than depositors queuing at a branch. The GENIUS Act rules were largely drafted with human redemption behaviour in mind. The agentic-payment volume the rest of this brief has been tracking all month, Visa's stablecoin settlement pilots, Mastercard's Agent Pay for Machines, the Open USD coalition, is going to test that 10% floor against machine-speed redemption before anyone gets a chance to revise it. Elsewhere on the rails today, Hyundai Card settled twenty thousand dollars between its US and Mexico subsidiaries in under seven minutes using USDT on Avalanche, a small proof that the rails already move at machine speed while the rulebook is still catching up [3].

A liquidity buffer built for a queue at the counter is a different instrument than a liquidity buffer built for a fleet of agents that can all decide to redeem in the same second.