Central banks have stopped arguing about whether stablecoins are risky. Their focus now is on who will control them and how. On April 20, BIS General Manager Pablo Hernandez de Cos called for global cooperation on stablecoins, describing it as “critically important.” The Bank for International Settlements, the central bankers' central bank, has raised concerns before, but the language is now much sharper. De Cos warned about runs that could trigger market stress, about dollar-pegged tokens accelerating the dollarization of developing economies, and about fragmented regulatory frameworks that private firms can arbitrage across borders. That's the language of systemic risk, distinct from the investor-protection framing that dominated earlier debates.
The Signal
A stablecoin is a cryptocurrency designed to maintain a stable value relative to a fiat currency. Tether's USDT and Circle's USDC are the two largest, together accounting for roughly 85% of the $315 billion in stablecoins currently in circulation. Unlike a savings account or legal tender, a stablecoin functions as a private IOU worth $1, backed by reserves that include US Treasury bills and built for speed across borders and crypto markets. At that scale, the convenience is exactly what central banks now find alarming.
The concern over peg stability is real: if an issuer can't maintain the $1 value during heavy redemptions, the result is a run that forces rapid liquidation of reserve assets, injecting volatility into Treasury markets. The deeper concern, however, is what stablecoins do to the banking system as they grow. When people hold tokens instead of bank deposits, banks lose the funding base they use to make loans. When payments settle on private token networks rather than bank rails, banks lose fee income, transaction data, and customer relationships. The ECB has been explicit about this chain: stablecoins could cost European banks all three simultaneously while giving dollar-denominated tokens a foothold in markets where the euro is supposed to be dominant.
“The BIS is no longer debating whether stablecoins are risky—it now treats them as a multi-trillion-dollar monetary threat.”
On-Chain Data
- Total stablecoin market cap: $315 billion currently in circulation, per industry data cited by CryptoSlate.
- USDT and USDC dominance: Together, they account for roughly 85% of the stablecoin market, equating to about $268 billion.
- Citi's 2030 projection: Base case sees stablecoin issuance at $1.9 trillion; high-adoption scenarios reach $4 trillion.
- Deposit drain estimate: The US banking lobby projects stablecoins could extract roughly $500 billion in deposits by 2028.
- ECB modeling: In November 2025, policymakers war-gamed a $2 trillion stablecoin scenario and concluded it would become a direct transmission channel for US financial stress into European banks.
Market Impact
The deposit drain plays out primarily in developed economies, but the dollarization problem is global. De Cos warned that stablecoins can accelerate the structural dependence of developing economies on the dollar while making it easier to evade capital controls, leading to larger inflows during stable periods and faster capital flight during stress. We've seen this take place in countries like Nigeria, Argentina, and Turkey, where households are already using dollar-pegged stablecoins to protect savings from devaluing local currencies, bypassing official exchange rates and domestic banking systems entirely.
The Federal Reserve, in a March 2026 note on payment stablecoins and cross-border payments, added a further complication: a large enough stablecoin sector outside the banking system can blunt how monetary policy reaches the real economy, because the Fed's tools work through banks, and a parallel network that bypasses them weakens their reach. This means that as stablecoins grow, the ability of central banks to control inflation or stimulate growth becomes compromised.
Your Alpha
For investors and builders, this growing regulatory pressure presents both risks and opportunities. Central banks are clearly signaling they want to control or limit stablecoins, which could lead to stricter regulations, especially in Europe and the US. However, the underlying demand for programmable money and fast cross-border payments remains huge.
- 1Watch US and EU regulation: Any legislation that forces stablecoins to hold reserves in regulated banks or submit to bank-like supervision could reduce yields and flexibility for issuers like Tether and Circle. Keep an eye on bills in the US Congress and MiCA frameworks in Europe.
- 2Consider alternative stablecoins: If regulation tightens on USDT and USDC, decentralized stablecoins (like DAI) or asset-backed alternatives (like gold or basket-pegged) could emerge as alternatives. However, these carry their own volatility and liquidity risks.
- 3Position for tokenization: Central banks are exploring their own digital currencies (CBDCs) as a response. Tokenized real-world assets (RWA) and on-chain Treasuries could benefit from an environment where private stablecoins are more regulated, as investors seek yield in government-backed tokenized assets.
Next Catalyst
The next major event to watch is the BIS's June meeting, where new guidance on stablecoins is expected. Additionally, the European Union is finalizing MiCA technical standards for stablecoins, with full implementation targeted by end of 2026. In the US, the Stablecoin Clarity Act could advance in Congress, defining the regulatory landscape for years to come.
Also watch for moves by Tether and Circle: any changes in their reserve composition or corporate structure could trigger market volatility. Finally, stablecoin growth in emerging markets, especially Latin America and Africa, will continue to be a key adoption driver but also a regulatory flashpoint.
The Bottom Line
Stablecoins have evolved from a niche tool for crypto traders to a $315 billion force that central banks now view as a systemic threat. Deposit drain, dollarization, and monetary policy erosion are real concerns driving stricter regulation. For investors, the key is to anticipate regulatory tightening and position in assets that benefit from a more regulated stablecoin ecosystem, such as tokenized RWAs or CBDCs. The stablecoin market won't disappear, but its shape will change dramatically in the coming years.
