Why Stablecoins Are Changing the Game for US Treasury Bills

Stablecoins are reshaping the demand market for U.S. Treasury bills, driving a persistent bid for short-duration debt. Yet this shift raises the question: can they help with the long end of the yield curve?

Stablecoins Bid on Short-Duration Treasuries

Stablecoins are fundamentally changing the dynamic for short-duration U.S. Treasury bills. Take Tether (USDT) and USD Coin (USDC), which together account for 83% of the $323 billion stablecoin market. These digital assets are more than just currencies. they're investment vehicles for Treasury bills. Tether alone holds $117 billion in T-bills, with its structure favoring maturities of 93 days or less.

This appetite for short-duration Treasuries aligns well with the U.S. Treasury’s strategic pivot towards T-bill financing. In 2025, 84% of U.S. debt issuance came in the form of T-bills, a post-crisis high. By focusing on bills, the Treasury reduces the need to issue longer-dated bonds, keeping short-end yields stable. But what's the catch?

The Long-End Challenge Persists

Despite the front-end relief, the long-end of the yield curve remains stubborn. As 10-year and 30-year Treasury yields climb to multi-year highs of 4.60% and 5.12% respectively, the problem isn't just domestic. It's global.

Foreign investors like Japan and China, which collectively hold around $1.83 trillion in U.S. Treasuries, are diversifying away. Japan, the largest holder, is shifting focus to its increasingly attractive domestic bonds. China has cut its U.S. holdings by nearly half from a peak of $1.3 trillion in 2013. Without these foreign buyers, compressing long-term yields becomes an uphill battle.

Stablecoins can absorb short-end risk, but they can't tackle the long-end issue. The U.S. needs foreign investment to fill that gap. But what if the U.S. Treasury had other strategies up its sleeve?

What's the Real Solution?

Addressing long-term yields requires more than stablecoins or even the Fed's influence on short-term rates. It's about economic conditions. Lower energy prices could ease inflation fears, making investors more comfortable with long-term bonds. But that's a political solution, not an economic one.

Reengaging foreign buyers is important. As Japanese bond yields rise, the U.S. must offer a competitive edge. This might mean bilateral agreements or even FX cooperation to make U.S. Treasuries attractive post-hedging.

Stablecoins provide much-needed short-term liquidity, but they're not a panacea for the yield curve. Long-term solutions demand a balanced approach, focusing on both domestic strategies and international relations. Perhaps the U.S. Treasury should look beyond digital currencies and engage more actively with its foreign investors.