Treasury Yields Quietly Steer Crypto Lending Rates, Study Finds

Decentralized finance has long been marketed as a financial system that lives entirely outside the reach of central banks, commercial lenders, and government bond markets. Built on blockchains and governed by self-executing code rather than bankers, it promises borrowing and lending that operates around the clock, without credit checks, branch offices, or the machinery of traditional finance. But a new analysis from Penn State’s Smeal College of Business suggests that the wall separating this digital marketplace from conventional markets is far more porous than its advocates might like to believe. According to the research, one of the most closely watched interest rates in the world—the yield on the 10-year U.S. Treasury—leaves a measurable imprint on the rates paid and earned in cryptocurrency lending markets, even though nothing in the underlying software connects the two systems.

The study, conducted by Siddharth Bhambhwani, assistant clinical professor of accounting at Penn State, compared borrowing and deposit rates on Aave, one of the most widely used decentralized finance platforms, with U.S. Treasury yields over the period from January 2023 to March 2026. The findings, published in the journal Finance Research Letters, show that Treasury yields significantly influence rates in cryptocurrency lending markets despite the absence of any direct institutional link. The result challenges a popular narrative that decentralized finance, often abbreviated as DeFi, functions as a largely separate financial ecosystem driven primarily by cryptocurrency-specific factors.

To understand why the connection matters, it helps to understand how DeFi lending actually works. Instead of routing loans through a bank, DeFi relies on computer programs called smart contracts that run on a blockchain—a shared ledger maintained simultaneously by many computers, with no single owner. A useful mental model is a marketplace built around pools of digital assets. Some users deposit assets into these pools and earn interest; others borrow from the pools and pay interest. Unlike a conventional bank loan, however, DeFi borrowing generally requires borrowers to post cryptocurrency worth more than the amount they borrow. To borrow eighty dollars, a user might have to lock up one hundred dollars of another asset. If the value of that collateral falls close to the borrowed amount plus accrued interest, the software automatically sells it and repays the loan, a mechanism designed to protect depositors without the need for a human loan officer.

The appeal of this model is straightforward. A DeFi protocol, as these programs are known, generally does not evaluate a borrower’s credit score, income, or employment history in the way a bank might. If a user holds the necessary digital assets and meets the collateral requirements, the transaction executes automatically. Markets run continuously, and they can be accessed from many parts of the world without opening a conventional bank account. For depositors, the main attractions are yield and access: deposits based on stablecoins—cryptocurrencies designed to maintain a steady price by being tied to a traditional asset, most often the U.S. dollar—have often paid substantially more than traditional bank savings accounts. Transactions settle quickly, and the rules governing major protocols are encoded in smart contracts whose code is public and open to inspection. Yet these benefits come with substantial risks. Smart contracts can contain vulnerabilities and have been exploited, users generally lack deposit insurance, and recovering funds after a hack or failure can be difficult.

The mechanics of how interest rates are set on these platforms differ sharply from traditional finance. A bank decides what rate to pay on savings accounts based on market interest rates, competition for deposits, and its own funding needs. Treasury yields, meanwhile, emerge from financial markets as investors buy and sell U.S. government securities, responding to expectations about inflation, economic growth, and monetary policy. On a DeFi platform, the process is purely mechanical. Rates are determined by utilization—the ratio of assets borrowed from a pool to assets deposited into it. When relatively little is being borrowed, rates fall; when borrowing demand surges, rates climb. By design, this system contains no reference to Treasury markets, central bank policy, or any traditional benchmark. That is precisely what makes the empirical connection so striking.

Bhambhwani’s analysis found that for stablecoins, Treasury yields and DeFi rates move together in a systematic way. When Treasury yields rise, stablecoin borrowing and deposit rates tend to rise with them. The study estimated that a quarter-point move in the U.S. 10-year yield is associated with roughly a one-point move in stablecoin borrowing rates. The channel, though indirect, is intuitive. A stablecoin is designed to track the U.S. dollar, so a stablecoin depositor is effectively making a direct comparison: hold the token and earn the DeFi rate, or hold Treasury securities and earn the Treasury rate. When the outside opportunity changes, capital reallocates between the two options. Utilization shifts within the lending pools, and the mechanically determined DeFi rate adjusts—even though nothing in the protocol’s code references the Treasury market at all.

Notably, the relationship does not hold for volatile crypto assets such as Bitcoin and Ethereum. Someone depositing Bitcoin is not making the same comparison against a dollar-denominated benchmark. Instead, they are primarily focused on Bitcoin’s expected return, and a percentage-point change in Treasury yields is essentially noise compared with the often large and rapid swings in cryptocurrency prices, which can sometimes exceed ten percent in a single day. The contrast highlights that the bridge between traditional and decentralized finance runs specifically through dollar-pegged instruments, whose depositors behave like yield-seeking investors in any other money market rather than like speculative crypto traders.

The choice of the 10-year Treasury yield as the key benchmark carries particular significance. The 10-year yield reflects investors’ views about economic conditions over a relatively long horizon and serves as a foundational reference rate throughout global financial markets, influencing borrowing costs and asset valuations across mortgages, corporate debt, stocks, and other investments. What makes its relationship with DeFi especially interesting is that DeFi loans lack a conventional contractual maturity—they remain active as long as a borrower’s collateral exceeds the borrowed amount. Yet among the Treasury maturities examined in the study, the 10-year yield provided the most consistent additional information about stablecoin rates, suggesting that DeFi stablecoin markets are responding to the same broad financial conditions captured by this major traditional benchmark.

For anyone lending or borrowing stablecoins through DeFi platforms, the practical implication is that traditional interest rates may offer useful context for anticipating where DeFi rates are heading. A depositor chasing high stablecoin yields, or a borrower weighing the cost of a crypto-backed loan, can look to movements in Treasury yields as a signal of the direction DeFi rates are likely to follow. This reframes DeFi not as an isolated alternative economy but as a participant in the global market for capital, sensitive to the same macroeconomic forces—monetary policy expectations, inflation outlooks, and growth forecasts—that shape conventional asset prices.

More broadly, the findings arrive at a moment when decentralized finance is gaining mainstream appeal and policymakers, investors, and researchers are debating how integrated it has become with the existing financial system. The evidence from Aave’s lending markets indicates that as decentralized finance matures, traditional and decentralized markets may increasingly function not as two completely separate financial systems, but as interconnected parts of a larger market for capital. For a sector whose founding promise was independence from traditional finance, the data suggest a different reality: even code-governed lending pools, with no direct link to Wall Street or the Treasury market, cannot fully escape the gravitational pull of the world’s benchmark interest rate.

Subject of Research: The relationship between decentralized finance lending rates and U.S. Treasury yields

Article Title: Q&A: Is decentralized finance truly independent from traditional markets?

Article References: Q&A: Is decentralized finance truly independent from traditional markets?. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: decentralized finance, DeFi, stablecoins, Treasury yields, Aave, cryptocurrency lending, smart contracts, interest rates, blockchain, Finance Research Letters, Penn State, financial markets