Christine Lagarde: Stablecoins and the future of money: separating functions from instruments

SPEECHStablecoins and the future of money: separating functions from instrumentsSpeech by Christine Lagarde, President of the ECB, at the Banco de España LatAm Economic Forum in Roda de Bará, SpainRoda de Bará, 8 May 2026It is a privilege to be at Castillo de Bará for the inaugural Banco de España LatAm Economic Forum.Few developments in recent years have moved from the periphery to the centre of the policy debate as quickly as stablecoins.Stablecoins have grown from less than USD 10 billion six years ago to more than USD 300 billion today. They are overwhelmingly denominated in US dollars, and nearly 90% of the market is controlled by two issuers – Tether and Circle – based in El Salvador and the United States, respectively.As their adoption has expanded and their links to the real financial system are deepening, the risks they pose have come firmly into focus, especially as regards financial stability. These concerns have been particularly acute in parts of Latin America and Africa, but they are now firmly part of the policy debate in advanced economies as well.Europe was early to recognise this. The Markets in Crypto-Assets Regulation (MiCAR) brought stablecoins within the regulatory perimeter in 2024, ahead of developments elsewhere, aiming to contain these risks and safeguard the integrity of the financial system.In the United States, however, the approach has taken a broader turn. The GENIUS Act is not just a consumer protection and financial stability measure. The US Administration explicitly describes it as a tool to ensure “the continued global dominance of the U.S. dollar” and to cement demand for US Treasuries.[1] The terms of the debate have shifted with it. It is no longer about whether stablecoins should exist, but whether jurisdictions can afford to be without them.The growing argument is that to remain relevant, Europe must respond by promoting euro-denominated stablecoins of its own. Otherwise, it faces a future of digital dollarisation and a loss of monetary sovereignty. But what this debate has not asked clearly enough is what, precisely, stablecoins are for. The benefits attributed to them rest on two distinct functions – a monetary function and a technological function – that are systematically conflated in the current debate. To navigate clearly, we need to separate them.A thinker born on this very peninsula 2,000 years ago put it plainly. Seneca wrote “Ignoranti quem portum petat, nullus suus ventus est”. To one who does not know to which port one is sailing, no wind is favourable. The argument I want to develop today is that once we disentangle those two functions, the case for promoting euro-denominated stablecoins is far weaker than it appears. And a more fundamental question comes into view: do we actually need stablecoins to obtain the benefits they are said to provide? Or are we mistaking the instrument for the outcome, when what matters is the architecture underpinning which other instruments can safely emerge?One instrument, two functionsStablecoins were initially designed to solve a narrow problem within the crypto ecosystem: price volatility. To make a specific type of crypto-asset usable for settlement, the creators of stablecoins anchored them mainly to fiat money,[2] the very system they had originally sought to bypass, backing each token one-for-one with cash and short-dated government debt.[3]That design choice made stablecoins the internal settlement currency of decentralised finance and the primary bridge between crypto and currencies. It still accounts for the overwhelming majority of their transaction volume.But as stablecoins move beyond the crypto ecosystem, two distinct functions have started coming into view.The first is monetary. Stablecoins are increasingly seen as a way to extend the global reach of reserve currencies by easing two long-standing constraints on how those currencies circulate and who can hold the assets behind them.The first constraint is access to cross-border payment infrastructure. Historically, that access ran through merchant houses in the Renaissance and nowadays comes via the correspondent banking networks.[4]Stablecoins allow monetary value to move outside traditional banking channels, with fewer intermediaries and allegedly lower costs, extending the currency’s reach into areas where access has declined. This is most evident when transactions remain inside the crypto ecosystem, as is increasingly the case in cross-border business-to-business payments, which already account for around 60% of stablecoin payment volume – though that volume amounts to just 0.01 % of global business-to-business flows.[5] Converting into and out of stablecoins, however, incurs costs that can erode those gains.The second constraint is the ease of holding the currency outside its home jurisdiction. Households abroad have long held dollars in physical form, and institutions have held them through capital markets. But each route involves friction, with cash being cumbersome and earning no yield, and capital market access remaining the preserve of institutional investors.Stablecoins reduce those frictions, as digital access is faster and easier than hard cash, and it reaches savers in countries where weak currencies can erode savings. In economies where access to a stable currency has historically been constrained, transaction flows already reach around 7.7% of GDP in Latin America and 6.7% in Africa and the Middle East.[6] The implications deepen if stablecoins were to be remunerated. As US dollar-pegged stablecoins hold Treasury bills as reserves, a yield-bearing stablecoin makes its holder, indirectly, a holder of US government debt – held not only as a store of value, but as an investment asset. And individual portfolio choices aggregate into systemic effects. Research finds that a USD 3.5 billion inflow into dollar‑backed stablecoins lowers three‑month Treasury bill yields by around 2.5-3.5 basis points under normal conditions, with the effect more than doubling in periods of Treasury bill shortages.[7]The second function of stablecoins is technological. It is about how transactions are executed and settled within emerging financial infrastructure.Digital innovation in recent years has made it possible for financial assets to migrate onto distributed ledger technology (DLT), allowing real-world assets to be tokenised – represented as digital tokens on programmable blockchains.[8] As trading and ownership move onto these platforms, a new requirement emerges: transactions need a settlement asset that can operate natively within the same environment.Stablecoins have naturally filled this role. They have become the default cash leg for so-called atomic settlement – the simultaneous exchange of two assets within a single transaction, where either both sides settle instantly or neither does. This removes settlement risk by design.This function requires a stable unit of value on-chain. Most crypto-assets are too volatile to serve this purpose. By anchoring their value to fiat currencies and backing it with liquid reserves, stablecoins are, for now, the only instruments able to perform this role reliably at scale. In effect, they act as the system’s native “cash”.The importance of this becomes clearer when contrasted with existing financial infrastructure. Today, securities transactions often settle over multiple days, require reconciliation across fragmented ledgers, and tie up collateral for longer than necessary.Distributed ledgers compress these processes into a single environment, where issuance, trading, settlement and custody can occur continuously. Activities that once required manual coordination – such as coupon payments, margin calls and collateral movements – can instead be executed automatically through code.Adoption is already accelerating. Tokenised money market funds whose shares are issued as tokens on DLT, deployable as collateral in derivatives and repo markets, roughly doubled in market capitalisation in 2025, reaching around €7 billion, outpacing growth in both stablecoins and traditional money market funds.[9]Taken together, these developments reveal a technology that is doing two distinct things at once – reshaping monetary demand and transforming settlement infrastructure – in ways that blur the boundary between them. That blurring is precisely what makes the current policy debate so difficult to navigate. And it is where Europe risks going wrong.Does Europe need stablecoins?With close to 98% of stablecoins denominated in US dollars,[10] and with the United States now moving to entrench that position through legislation, the growing argument is that Europe must match the US model to remain competitive.But that framing rests on the confusion I have just described. It treats one instrument as if it performs one function.But when we examine each function separately, the case for adoption looks less compelling. Let me take each in turn, beginning with the monetary function.The monetary functionEuro-denominated stablecoins, operating within the framework already established by MiCAR, could generate additional global demand for euro area safe assets.[11] If that demand were to grow – driven by buyers outside the euro area, with reserves channelled into safe assets – sovereign yields would compress, financing conditions would ease, and the international reach of the euro would be extended through a new digital channel. In the short term, the proposition looks like a tailwind.But these stablecoins need to be assessed alongside the trade-offs they would create, at least two of which are material.The first concerns financial stability. Stablecoins are private liabilities whose stability depends on the credibility and liquidity of their backing. When confidence holds, they function as intended. But when it weakens, the demand for redemption can become sudden and self-reinforcing. This is not hypothetical. When Silicon Valley Bank collapsed in March 2023,