US Wholesale Prices Jump 4% as Iran Conflict Sends Energy Costs Soaring

U.S. wholesale prices surged last month as the ongoing war in Iran drove energy costs sharply higher, adding fresh pressure to an economy already grappling with inflationary headwinds, the Labor Department reported Tuesday.

The producer price index, which tracks inflation at the wholesale level before it reaches consumers, climbed 0.5% from February and rose 4% compared with March 2025. The reading exceeded analyst expectations and marked one of the sharpest year-over-year increases in recent months.

Energy prices were the primary driver of the spike, with the Iran conflict disrupting global oil supply chains and pushing crude prices to elevated levels not seen in years. Gasoline, diesel, and natural gas costs all contributed significantly to the monthly gain.

Economists warn that producer price increases typically filter through to consumers within weeks, raising the prospect of higher prices at the pump, in grocery stores, and across a broad range of goods and services dependent on energy-intensive supply chains.

The Federal Reserve will be closely watching the data as it weighs its next move on interest rates. Policymakers have signaled caution in recent meetings, and a sustained surge in wholesale inflation could complicate any plans to ease monetary policy in the near term.

Markets reacted with unease following the report, with stocks dipping and Treasury yields ticking higher as investors recalibrated their expectations for Fed action. Oil futures remained volatile amid continued uncertainty over the scope and duration of the Iran conflict.

Administration officials acknowledged the figures but stressed that the government is working with allies to stabilize global energy markets. Relief, however, may be slow to materialize if geopolitical tensions in the region persist.