Bond Selloff Reflects Rising Bets on Higher Neutral Rate

The recent selloff in US Treasury bonds has drawn attention to an obscure but influential concept in macroeconomics: the neutral rate of interest, often denoted r-star. A growing number of investors are betting that this theoretical rate, which is consistent with stable growth and inflation when the economy is at full employment, is moving higher. If those bets are correct, the implications extend far beyond the bond market, touching Federal Reserve policy, equity valuations, and the cost of capital for businesses and households.

The neutral rate is not directly observable. It is estimated from economic data and models, and it shifts over time based on factors such as productivity growth, demographics, and global savings patterns. For much of the past decade, r-star was widely believed to be very low, perhaps near zero in real terms, reflecting sluggish growth, an aging population, and a glut of savings. That low neutral rate helped justify the Fed’s ultra-loose monetary policy and kept long-term bond yields subdued. Now, a reassessment appears underway. Robust fiscal spending, artificial intelligence-driven productivity gains, and reshoring of supply chains are among the forces that could be pushing the neutral rate higher.

A higher r-star means that the Fed’s current policy rate, even after recent hikes, may be less restrictive than previously assumed. If the neutral rate has risen, the central bank may need to keep rates higher for longer, or even raise them further, to cool the economy and bring inflation down to target. Bond investors are pricing in this possibility by selling long-dated Treasuries, pushing yields up. The yield on the 10-year note has climbed sharply in recent weeks, reversing much of the decline seen earlier this year when the market anticipated rate cuts.

The mechanics of this repricing are subtle but powerful. When investors expect a higher neutral rate, they demand a higher term premium, the extra compensation for holding long-term bonds instead of rolling over short-term debt. That term premium has been unusually low for years, suppressed by quantitative easing and global demand for safe assets. Its revival amplifies the bond selloff, creating a feedback loop: higher yields tighten financial conditions, which in turn may slow the economy, but if the neutral rate is genuinely higher, the economy can tolerate those tighter conditions without slipping into recession.

For equity markets, a higher r-star is a double-edged sword. It validates stronger growth expectations, which support corporate earnings. But it also raises the discount rate applied to future cash flows, reducing the present value of stocks, especially growth stocks with long-duration earnings. The recent rotation out of technology and into value and cyclical sectors may reflect this recalibration. Meanwhile, the housing market and corporate borrowing costs are already feeling the pinch of higher yields, potentially dampening activity.

The uncertainty around r-star is itself a source of volatility. The estimates are imprecise and subject to revision. The Fed publishes its own range, currently around 0.5% to 1.5% in real terms, but the market appears to be pricing an even higher level. If the neutral rate has indeed risen permanently, the era of ultra-low interest rates may be over, requiring investors to adjust portfolios and risk appetites accordingly. If the move proves temporary, the bond selloff could reverse as quickly as it began.

For now, the bond market is sending a clear signal that the macroeconomic regime is changing. The obscure rate known as r-star is no longer just an academic curiosity; it is a practical anchor for asset prices and policy expectations. Professional investors would do well to monitor the debate around it closely, because the direction of yields, and the economy, may hinge on its elusive trajectory.