Iran War Inflation Impact on Treasury Yields and Fed Policy

The 10-year Treasury yield has climbed to nearly 4.75%, up from below 4% before the outbreak of the Iran war, as rising energy costs and inflation expectations force investors to abandon bets on Federal Reserve rate cuts [1]. This shift in sentiment reflects growing concern that the conflict will keep inflation well above the central bank’s target, potentially forcing policymakers to raise rates even at the risk of triggering a recession [2].

Inflation and the shift in Fed expectations

The surge in inflation, which saw the annual Consumer Price Index (CPI) climb to 3.3% in March from 2.4% in February, is primarily attributed to the war's impact on energy markets [1]. Gasoline prices surged 21.2% in March, contributing to an overall 10.9% jump in energy costs [1]. While core inflation rose a modest 0.2% monthly, the broader inflationary pressure has caused market participants to pivot from anticipating rate cuts to pricing in potential hikes [1].

Moody’s Analytics chief economist Mark Zandi noted that long-term interest rates are now at their highest levels since before the Global Financial Crisis [1]. Beyond the immediate conflict, Zandi and Apollo Global Management’s Torsten Sløk point to a structural supply-demand imbalance in the bond market as a secondary driver of higher yields [3]. The federal budget deficit has led to a surge in Treasury issuance—now reaching nearly 10% of GDP—at a time when traditional buyers like the Federal Reserve, foreign central banks, and commercial banks have reduced their participation [3].

Economic outlook and recession risks

The economic environment remains tenuous, with Moody’s Analytics raising its 12-month recession probability to 48.6% [5]. This outlook is compounded by a softening labor market, which saw an unexpected loss of 92,000 jobs in February and an unemployment rate drifting toward 4.5%, up from 3.4% three years ago [5].

Economists warn that even if the conflict in the Gulf concludes, the inflationary effects may persist, complicating the Federal Reserve's ability to support growth [1]. With real disposable income stagnant over the past year and wage growth decelerating, the economy faces a "liftoff stage" that is increasingly vulnerable to external shocks [2]. While some analysts suggest fuel costs could decline once the situation in the Strait of Hormuz stabilizes, the combination of high inflation and slowing growth leaves the central bank with limited room to maneuver [1].

What to watch

• Strait of Hormuz stability: Monitoring the flow of oil through this critical chokepoint remains the primary indicator for potential normalization of global energy prices [2].
• Treasury issuance levels: Watch for further updates on the volume of Treasury securities issuance, as current levels continue to exert upward pressure on long-term yields [3].
• Federal Reserve policy signals: Future commentary from the central bank regarding the neutral rate and inflation targets will be critical, as current market pricing has shifted toward potential rate hikes [2].

The central question for the coming months is whether the U.S. economy can maintain its resilience in the face of persistent energy-driven inflation and a tightening fiscal outlook. If growth continues to underperform, the Federal Reserve may be forced to choose between prioritizing inflation control or preventing a broader economic downturn.