Stablecoins are getting big — fast. The market sits around $250 billion right now. J.P. Morgan thinks it hits $500 billion by 2028. Standard Chartered says $2 trillion. That’s a pretty wide range, but either way, central banks are sweating.
And they should be. Here’s the core problem. Stablecoins are pegged to fiat currencies — mainly the dollar — but they operate outside central bank control. When people move money into stablecoins, they’re fundamentally stepping sideways out of the traditional banking system. The Banque de France has flagged this directly, warning about potential loss of monetary policy control. That’s not a small concern. That’s kind of the whole thing.
The banking impact is real too. A $650 billion shift from bank deposits to stablecoin issuers equals roughly a 1% drop in bank assets and lending. That translates to about $325 billion less in loans flowing into the economy. Less lending means less economic activity. Simple math, ugly outcome.
A $650 billion shift into stablecoins means $325 billion less in loans. Less lending, less growth. Simple math.
Then there’s Treasury market weirdness. Stablecoin issuers hold Treasuries at about half their assets — way more than banks, which hold around 20%. Every additional dollar in stablecoins pumps roughly $0.50 into Treasury demand. They’ve become massive net buyers of U.S. debt since 2019. Good for Treasury supply management, maybe. But it shifts demand heavily toward short-term debt, which reshapes the whole market dynamic.
Monetary policy shocks hit stablecoins hard too. After tightening shocks, stablecoin market caps drop around 10 percentage points. The decline lasts about three months. Meanwhile, money flows into prime money market funds instead. So the system doesn’t disappear — it just shuffles around in ways that are harder to track and control.
Global implications are messy. Stablecoin growth boosts dollar demand internationally, complicates capital flows, and lets users sidestep capital controls in emerging markets. That’s not nothing. Currency competition is quietly accelerating in the background. Unlike Bitcoin, which holds market dominance of approximately 62.7% and benefits from institutional confidence and ETF liquidity, stablecoins derive their appeal from price stability rather than speculative growth — making them a fundamentally different kind of competitive threat to traditional finance.
The GENIUS Act gives the Fed oversight here. Whether that’s enough oversight remains an open and uncomfortable question. In 2024, the annual transaction value of stablecoins exceeded $27 trillion, surpassing the combined transaction volumes of Visa and Mastercard — a scale that makes the question of adequate oversight feel increasingly urgent.
