Tether Challenges BIS with Strong Defense of $183B Stablecoin Reserves

Tether wants a fight. The company is pushing back hard against the Bank for International Settlements, and it’s using a $183 billion market cap as its opening argument.

Paolo Ardoino, Tether’s CEO, went after recent remarks by BIS General Manager Pablo Hernandez de Cos, who raised concerns about stablecoins — specifically around convertibility, interoperability, and their potential for misuse in illegal activity. Ardoino’s counter is pretty direct: it’s about the reserves. Stablecoins like USDT sit on U.S. Treasury bonds. Tokenized bank deposits, the model the BIS prefers, are backed by liquid assets capped at roughly 10%. Ardoino’s view is that a 10% liquidity buffer doesn’t offer the same guarantee strength, and he’s not shy about saying so. Hernandez de Cos, for his part, sees tokenized deposits as a more natural extension of the existing monetary system — using technology without blowing up the financial architecture that’s already there. It’s a clean split. Two very different ideas about what digital money should look like.

Treasury Bonds vs. Fractional Reserves

The reserve argument is where things get genuinely interesting. Tether’s model leans on full backing from U.S. Treasuries — one of the most liquid and trusted asset classes on the planet. Tokenized deposits, by contrast, work more like traditional banking: fractional reserves, meaning only a slice of total deposits is held in liquid form at any given time. Ardoino’s point is that when you compare those two structures side by side, the stablecoin model looks more conservative, not less. That’s the opposite of how critics usually frame it.

And it’s worth noting that the BIS isn’t some fringe voice here. It’s the central bank for central banks, and when it raises concerns about stablecoins, regulators across Asia, Europe, and Latin America tend to pay attention. Hernandez de Cos flagged convertibility as a real issue — the idea that in a stress scenario, stablecoin holders might not be able to exit cleanly. Ardoino didn’t directly address that specific scenario in his response, at least not publicly. Unclear whether he has a clean answer for it.

USDT’s Role in Emerging Markets

Ardoino also made the case for USDT’s footprint in emerging markets, where the token has become a practical tool for both domestic transactions and cross-border exchange. In countries where local currencies are volatile or access to traditional banking is limited, stablecoins fill a real gap. That’s not a new argument, but it carries weight when you’re sitting on $183 billion in market cap and can point to actual usage patterns across multiple continents.

Stablecoin adoption across parts of Africa, Southeast Asia, and Latin America has grown sharply in recent years. Tether benefits from that trend more than any other issuer. So when the BIS raises concerns about supply and conversion risks, Ardoino’s implicit response is: look at who’s actually using this, and why.

See also: BIS Chief Calls Stablecoins Unfit for Payments, Advocates Tokenized Deposits Instead

The CLARITY Act adds another wrinkle. Ardoino raised the possibility that stablecoins could pull savings away from traditional bank deposits — especially if crypto platforms offer more attractive yields. Banks are nervous about that. The concern isn’t hypothetical. If customers can park money in a stablecoin and earn better returns than a savings account, the incentive structure shifts. That’s a problem for banks, and probably for regulators who’ve spent decades building deposit insurance frameworks around conventional institutions.

What the BIS Gets Right — and Wrong

It’s not that the BIS concerns are baseless. Interoperability between different stablecoin systems and traditional payment rails is still messy. Criminal misuse is a documented problem, not a theoretical one. And the question of what happens to stablecoin holders if a major issuer runs into trouble hasn’t been fully stress-tested in a real crisis.

But Ardoino’s broader point — that a Treasury-backed model is structurally sounder than a fractional reserve one — isn’t easy to dismiss. It’s actually kind of the opposite of what most people assume when they hear “crypto risk.”

More context: BIS Chief Slams Stablecoins as Unfit for Payments, Advocates for Tokenized Bank Deposits

The gap between these two camps isn’t narrowing. BIS wants tokenized deposits because they fit inside the existing system. Tether wants recognition that its model offers something the existing system can’t. Both sides are probably right about different things, which is what makes this debate so hard to resolve cleanly.

Tether’s market cap sits at $183 billion.