Latest / The Cryptocurrency Economy with Fexingo: Bitcoin, Ethereum, and Digital Money Markets / Why Stablecoin Yields Are Beating T-Bills in July 2026
Transcript
- Lucas: So there is a number that has been quietly eating away at the Treasury market narrative this month, and it is the yield you can get on a plain vanilla USDC deposit on an exchange like Coinbase or Binance. Right now that yield is around 4.2 percent. Luna: Which is interesting because the three-month T-bill is yielding what, around 3.8? So you are actually getting paid more to hold a stablecoin than a Treasury bill. Lucas: Exactly. And that gap has persisted for a few weeks now. The Fed's effective rate is still 3.63, flat since June. The interest on reserve balances is 3.65. So the risk-free benchmark is basically anchored, but stablecoin issuers are offering a premium. And it's not just Coinbase. Aave's USDC lending rate has been above 4 percent for most of this week. Luna: Right, and the question is why. I mean, T-bills are backed by the US government. Stablecoins are backed by… well, whatever the issuer says they're backed by. So there has to be a reason lenders are getting a premium. Lucas: There is, and it comes down to demand for leverage in crypto markets. When traders want to go long, they borrow stablecoins to buy spot or open leveraged positions. That borrowing demand pushes up lending rates. And right now, with Bitcoin around 62,000 and some altcoins looking like they might break out, that demand is real. Luna: But doesn't that mean the yield is essentially a risk premium for lending into a volatile ecosystem? If there's a flash crash, those loans could get liquidated. Lucas: Absolutely. And that is the key distinction. The 4.2 percent on USDC is not a guaranteed return. It's a variable rate that depends on utilization. If everyone suddenly wants to borrow, the rate goes up. If no one is borrowing, it can drop to near zero. We saw that in late 2022. Meanwhile your T-bill yield is locked in for the term. Luna: So we are comparing a variable, uninsured yield on a private digital dollar to a fixed, insured yield on a government obligation. The premium makes sense in that context. Lucas: Right. And there's another layer. The stablecoin issuers themselves are earning interest on the reserves they hold—mostly T-bills actually. Circle, which issues USDC, has the majority of its reserves in short-dated Treasuries. So they're earning that 3.8 percent, and then they're passing some of it through to depositors in the form of yield, but they can also lend the stablecoins out into DeFi and earn more. That spread is how they make money. Luna: Which means depositors are essentially getting a cut of Circle's Treasury yield plus a little extra from DeFi lending. But if the DeFi lending market dries up, that extra goes away. Lucas: Exactly. And we saw that in 2023 when rates were lower and stablecoin yields were barely above 1 percent. The current 4.2 percent is really a combination of high T-bill yields—still elevated historically—plus robust demand for leverage in crypto. If either of those legs weakens, the yield drops. Luna: So who is actually earning that yield? Is it retail traders? Or is it institutions? Lucas: Increasingly both. Retail users on exchanges like Coinbase can earn yield just by holding USDC in their account. No lockup, no minimum. That's a huge shift from a few years ago when you had to go into DeFi protocols and manage your own liquidity. Now it's basically a savings account. And institutions are using it too—treasury desks at crypto funds are parking cash in stablecoin yield instead of money market funds. Luna: But that also means those institutions are taking on counterparty risk with the exchange or the protocol. If Coinbase goes under, that yield is gone along with your principal. Or if the stablecoin itself depegs, you lose. Lucas: Right. That is the elephant in the room. And it's not theoretical—we have seen depegging events. UST, obviously. But also USDC briefly depegged in March 2023 during the Silicon Valley Bank crisis because Circle had some reserves there. So the risk is real. The question is whether the 40 or 50 basis points of extra yield is worth it. Luna: And that brings us to the Fed minutes that just came out today. The split on rate direction suggests rates could stay higher for longer, or even go up if inflation ticks up. That would support T-bill yields, but it could also mean borrowing costs in crypto stay high, which might support stablecoin yields too. Lucas: Yeah, the minutes were basically a 'family fight' as CNBC put it. Some members want to hold, some want to cut, some are worried about inflation. That uncertainty is actually good for stablecoin yields because it keeps the base rate elevated. But if the Fed does cut later this year, the whole calculus changes. T-bill yields fall, and stablecoin yields would likely follow because the reserve earnings drop. Luna: So the current premium is partly a function of uncertainty. If the Fed cuts, the premium might shrink or even invert again. Lucas: Exactly. And there is a structural factor too. The Treasury market is deep and liquid. Stablecoin lending is not. If there is a sudden rush to exit, yields can spike as borrowers scramble for liquidity, but that's a stress signal, not an opportunity. We saw that during the UST collapse—lending rates on USDC spiked to 20 percent because everyone was borrowing to buy the dip or cover positions. Luna: So the 4.2 percent we see today could be a calm before a storm, or it could be a new normal. Either way, it is a real yield in a world where real yields are hard to find. Lucas: Which is the bottom line. The market is effectively saying there is enough demand for leverage and enough trust in stablecoins that borrowers are willing to pay a premium over the risk-free rate. Whether that trust is justified is the open question. Luna: And it is worth noting that the stablecoin market cap has been growing again. USDC supply is up about 15 percent since March. So people are voting with their wallets. Lucas: Yeah, that's a key data point. Over 170 billion in stablecoins outstanding across the top issuers. That's a lot of dry powder, and a lot of yield being generated. And the fact that some of that yield is flowing back to retail holders is genuinely new. A few years ago, only sophisticated players could earn yield on crypto. Now anyone with a Coinbase account can. Luna: If walking through the economy with us has made something click, honestly, if today was worth a coffee to you, there is a link. It's buy me a coffee dot com slash fexingo. Just a way to keep the show ad-free and independent. Lucas: Yeah, we do not run ads, so listener support is what makes this possible. And we appreciate everyone who has chipped in. Luna: So back to stablecoins. One thing we haven't touched on is the regulatory angle. The GENIUS Act or similar stablecoin legislation could change the reserve requirements. If issuers are forced to hold only T-bills and cash, the yield they can pass on might be capped. Lucas: That is a real possibility. The current bills floating around Congress would require stablecoin issuers to hold high-quality liquid assets, basically T-bills. That would make stablecoins even safer, but it would also mean the yield is essentially just the T-bill yield minus fees. So the 4.2 percent could become 3.6 percent overnight. The premium would vanish. Luna: So for now, we are in a window where stablecoin yields beat T-bills. But that window might close if the Fed cuts, if regulation tightens, or if demand for leverage drops. It is a game of arbitrage, but with more risk than most people realize. Lucas: And that's the takeaway. If you are earning that yield, understand what you're actually getting paid for. You are lending into a market that could turn on a dime. The premium is compensation for that risk, not a free lunch. Luna: Yeah. And for the rest of us, it is a fascinating indicator of how crypto markets are maturing. Stablecoins are becoming a real asset class with real yield, and that changes the conversation from speculation to something more like traditional finance. Lucas: Exactly. That is the story of 2026 so far. The infrastructure is getting built, and the yield is attracting capital. The question is whether the foundation is solid enough to hold when the next shock comes.