• Treasury Secretary Scott Bessent said rates "should drop" once the Iran conflict is resolved, pointing to a potential unwind of the oil-driven inflation premium embedded in bonds.
  • De-escalation could lower energy costs, ease inflation expectations, and pull down Treasury yields and consumer borrowing costs.
  • However, large U.S. deficits, heavy Treasury issuance, and persistent inflation may keep long-term rates elevated even after the conflict ends.

Bessent's Optimistic Outlook

Treasury Secretary Scott Bessent expressed confidence that interest rates will decline once the conflict with Iran is behind the market. In comments that underscore the link between geopolitical tensions and borrowing costs, Bessent suggested that a resolution would remove a key driver of inflation anxiety and bond-market stress.

"Once we get to the other side of the Iran conflict, rates should drop," Bessent said, according to people familiar with his remarks. The Treasury Secretary has been navigating a tricky landscape where geopolitical risks are feeding into energy prices and complicating the Federal Reserve's policy path.

The logic is straightforward: the extended Iran conflict has disrupted energy markets, pushing oil prices higher and embedding an inflation premium into Treasury yields. A credible de-escalation could unwind that premium, potentially reducing the 10-year Treasury yield, which on September 15 reached 5.041%, its highest since 2007.

The Inflation-Rate Nexus

Higher oil prices have a cascading effect on the economy, feeding into household expenses, transport, manufacturing, and food costs. This, in turn, elevates inflation expectations and pressures the Federal Reserve to maintain a hawkish stance. The 10-year yield, a benchmark for mortgages and corporate borrowing, reflects these dynamics along with concerns about the U.S. fiscal outlook.

Bessent told Congress that the 10-year yield is influenced by several forces, including "the need to address the deficit." He defended Treasury's expanded longer-dated bond buybacks as having limited the rise in yields and supported successful debt auctions, though yields continued climbing after the intervention.

Mortgage rates have already hit their highest level since June 2025, according to industry data, as the bond-market selloff raises borrowing costs for households and businesses.

Not a Guarantee

While de-escalation could provide relief, it is not a panacea. The U.S. faces structural fiscal challenges: large deficits, heavy Treasury issuance, and persistent inflation could keep long-term rates elevated even if oil prices fall. The Federal Reserve sets the federal-funds rate, but long-term yields are market-driven, shaped by expected inflation, growth, deficits, term premium, global capital flows, and risk appetite.

Analysts note that without credible deficit reduction, any post-conflict decline in yields could prove temporary. As Bessent himself acknowledged, the 10-year yield reflects the need to address the deficit — a point echoed by market strategists who argue that fiscal credibility is essential for durable rate relief.

Geopolitical and Domestic Pressures

The administration's approach to Iran includes an "economic isolation campaign" using sanctions and restrictions on financial networks. Reuters reported that Bessent said President Trump and Chinese President Xi Jinping would continue discussions involving Iran and China's financial links to Tehran.

Domestically, the administration faces scrutiny over whether its Iran policy, trade policies, and fiscal plans are increasing inflation and borrowing costs. The hearing itself saw protests calling for an end to both the war and sanctions on Iran.

Bessent's challenge is politically awkward: the administration wants lower borrowing costs, but the conflict-linked oil shock and deficit concerns are contributing to higher yields. Critics argue that buybacks cannot substitute for credible action on deficits and inflation, though Bessent maintains that the operations improved market functioning.

Looking Ahead

The path to lower rates hinges on several factors: a durable reduction in conflict risk, a subsequent drop in oil prices, and a sustained easing in inflation. Even then, the Fed's response will depend on incoming data, and long-term yields may remain higher than the ultra-low levels of the 2010s.

Key indicators to watch include crude-oil prices, inflation releases, Fed communications, the 10-year Treasury yield, mortgage-rate spreads, and Treasury auction demand. Diplomatic or military developments involving Iran and its trading partners will also be critical.

For now, Bessent's comment offers a glimpse of optimism, but the road to lower rates is fraught with fiscal and geopolitical obstacles.

Correction: An earlier version of this article misstated the date of the 10-year Treasury yield peak. It was September 15, not September 5.