Key Takeaways
For the last two years, the Federal Reserve’s aggressive rate-tightening campaign has reshaped global markets. Yields on US Treasuries reached levels not seen in years, allowing even cautious investors to earn 4-5% on low-risk assets like money market funds and short-term Treasury holdings.
Income for stablecoin issuers like Circle (USDC) grew 53% year-over-year to $658 million from August 2024 to August 2025, due to rising interest in Treasuries tied to USDC.
However, these years of rates speeding uphill may soon be over. With the Fed cutting interest rates by 0.25% on September 17, 2025, it’s finally hitting the brakes. Alongside promising more cuts before the end of the year, stablecoin issuers may feel the pain of shrinking income from Treasury-backed reserves as investors shift their money toward more profitable avenues. Avenues such as decentralized finance (DeFi).
Let’s dive deeper.
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Stablecoin issuers like Tether (USDT) and Circle hold tens of billions in reserves, tied largely to short-term Treasuries. When interest rates are high, these assets provide billions in annual interest income.
As mentioned, Circle’s highest results came from its reserve income at $658 million. A 0.25% cut means about $164.50 million of that revenue is gone next quarter.

Tether has even larger reserves, holding $120 billion in US Treasuries as of Q1 2025. Each incremental cut from the Fed chips away at the easy profits generated by issuers. But investors hurt too.
A cut of any kind means the following for risk-averse investors:
With each rate cut aimed at counteracting inflation, the profitability of low-risk investments declines. Investors who once lounged on easy 5% returns are now forced to sleep on thinner padding or find a new bed in DeFi.
Platforms like Aave, Compound, and Curve allow investors to lend, borrow, or provide liquidity for returns that rise far above 5%. And while volatile cryptocurrencies might offer potentially higher returns, stablecoins like USDT and USDC act as a dollar-pegged intermediary. A stable avenue into higher interest rates.
To many, crypto investments mean worrying about whether Bitcoin or Ether will swing 10% in a few days’ time. Stablecoins allow investors to park tokenized dollars into liquidity pools and enjoy the yield. In other words, stablecoins make DeFi yields comparable to low-risk bank products, but with higher rates.

In the current environment, one where traditional rates will continue to drop, a 6-8% rise shines in comparison to the fading glow of a bank’s 4% account.
For yield-hungry investors, that contrast is hard to ignore. It feels like an upgraded savings account. For institutions, DeFi represents a stepping stone toward the mass adoption of tokenized finance.
Digital wealth management firm Amber Group notes that stablecoin transaction volumes reached $27.6 trillion in 2024, surpassing the combined annual transaction volumes of Visa and Mastercard. Yield-bearing stablecoins represent around 4% of the overall stablecoin market as of May 2025, with about $9 billion in holdings at the time.
Each Fed cut lowers the ceiling for traditional finance returns while raising the potential for stablecoin-powered DeFi. These movements, alongside stablecoin developments like The GENIUS Act and Tether’s USA₮ issuance, seem to be the perfect ingredients for a stablecoin-flavored explosion.
But like any recipe, one wrong ingredient can spoil the whole dish. Stablecoins and DeFi come with their own risks.
Either way, the Fed’s 0.25% cut is just the first domino. Each one that tips afterwards seems poised to limit safe returns in favor of DeFi yields.
Investors seeking returns may start rotating capital from banks and money markets into stablecoin lending pools, and recent policies seem to encourage this trend.
Whether this trickle effect becomes a flood is yet to be determined.