The Yield, the Ban, and the Blueprint
Three jurisdictions, one problem, and a global currency competition playing out in plain sight
Dollar stablecoins are expanding global dollar dominance outside the traditional banking system. Existing monetary infrastructure wasn’t built to handle such an extension, and every jurisdiction is now being forced to respond to it.
This week offers an illustration of the tensions that stablecoins are producing across the global monetary order. America is pushing ahead its stablecoin agenda: the Clarity Act is moving through Congress, with a fight over yield at its centre, while USDC is being embedded into the infrastructure of the emerging agentic economy. Meanwhile Brazil has banned regulated fintechs and eFX providers from using stablecoins or any cryptocurrency to settle cross-border payments. And in Europe, Christine Lagarde argued on Friday that stablecoins are not the path to a stronger euro. In her view, the right response is to build public infrastructure and wait for it to be ready.
Three jurisdictions, one underlying problem, three entirely different responses. And as this edition will argue, only one of them is playing offense.
The Yield Question
The Clarity Act is doing exactly what it says. It is bringing regulatory clarity — to the US. The problem is that in a world of borderless digital money, a domestic clarification can have consequences that are anything but domestic.
The provision drawing the most attention is the yield question: within the stablecoin supply chain, who is permitted to offer yield to end users?
The debate has been framed, predictably, as a fight between the crypto industry and the banks. And the banks have a coherent argument. In the traditional system, yield is the mechanism central banks use to direct the flow of capital. Low rates push money into markets. High rates pull it back into deposits. That mechanism is how inflation gets managed, how growth gets throttled — and how banks keep their balance sheets funded. If regulated stablecoins begin offering competitive yield to retail customers, the concern is that bank deposits drain toward a new and less-regulated alternative.
Several analyses have complicated that argument. In particular, the evidence for mass deposit flight is thinner than the lobbying suggests. That said, the underlying anxiety is undeniable, suggesting it maps to something deeper than deposit economics. The real fight, in reality, is about who gets to own the customer relationship in an era when money has gone digital. Banks are worried about losing both deposits and relevance from a customer’s perspective.
To understand what is at stake, it helps to get back to the basics. The short version goes like this: yield is a customer acquisition cost dressed up as monetary policy.
More specifically, in any competitive system, yield is what you offer someone to say: stay with me. It is the reward for holding. And in the stablecoin ecosystem, the economics of that reward are simply different. Issuers like Circle and Tether hold Treasury T-bills at around 5%. They pass little (in the case of Circle) to nothing (in the case of Tether) back to the user, because they need to retain most or all of the yield for themselves: the margin is the business, and the Genius Act was drafted based on this premise.
That said, the debate now happening in Washington is whether that should change — whether yield should flow downstream, and if so, through whom. In DeFi, stablecoins can already generate returns of 3–12% APY depending on platform, protocol, and risk profile. Platforms like Kraken, Aave, and Coinbase all offer variations of this. The higher the yield, the higher the risk embedded in the structure underneath it. This is not new. What is new is that the same question is now being clarified at the level of statute — and the answer will not stay within US borders.
What Washington Decides, the World Inherits
Here is the scenario that the Clarity Act debate has largely failed to reckon with — at least outside of the US. Whatever gets legislated in Washington applies to US-regulated entities serving US customers. It does not automatically apply to a European holding USDC in a self-custodied wallet. If, as a result of the Clarity Act, a US citizen cannot earn yield on their stablecoin holdings, but a European citizen holding the same asset through a different interface can, the resulting incentive structure can prove problematic.
For a European holder, the decision calculus becomes: convert euros into USDC, earn a materially higher yield, absorb the FX risk. Sometimes that trade makes no sense. Sometimes it does. But in aggregate, even partial adoption of that logic creates structural pressure toward dollarisation operating inside European borders, driven not by policy or coercion but by individual wallet decisions. Capital does not wait for political permission to move to where it is treated best.
Currencies are now competing for retail holders at a scale and with an accessibility they never had before. You can download a wallet, receive USDT, and transact internationally without touching a bank or a regulated institution. The dollar’s deep liquidity and global trust make USD stablecoins the dominant form of that competition. And yield is the marketing tool that can convert a passive holder into an active advocate.
In other words, we are witnessing a global competition for wallet share — where yield is the incentive layer that converts a passive holder into an active advocate.
Brazil Draws the Line
The most instructive defensive response to this dynamic is in Brasília.
Last week, the Banco Central do Brasil published Resolution No. 561. The rule bans regulated fintechs and eFX providers from settling cross-border payments using stablecoins or any other cryptocurrency. From October 1, companies like Nomad and Braza Bank — which had built USDT and XRP-ledger settlement into their cross-border rails — must route everything through traditional FX transactions.
The numbers help explain the decision. Brazil’s traditional remittance market moves roughly $25B per year. But crypto had quietly assembled something considerably larger alongside the regulated system. Brazil’s crypto market now processes $6–8B per month, with stablecoins accounting for approximately 90% of that volume. Annualised, that is $70–90B in cross-border flows operating through channels the central bank cannot observe — a parallel financial infrastructure, built without permission, larger than the regulated market it nominally complemented, and almost entirely invisible to the BCB. At that scale, the regulatory blind spot had become untenable.
The BCB’s rule operates cleanly at the institutional layer. Licensed fintechs have authorisations to protect, thus compliance will happen. What the rule cannot reach, however, is the peer-to-peer layer. Any Brazilian with a self-custodied wallet can still settle in USDT on Tron or USDC on Solana, entirely outside the eFX framework. The plumbing the regulation controls is not the same as the plumbing that actually moves the money.
