Wholesale Inflation Running Rampant: Highest Increase in Four Years Due to Iran War

October 15, 2026

Wholesale Inflation Running Rampant: Highest Increase in Four Years Due to Iran War

Record-high diesel prices are making it costlier to make and transport goods, squeezing household budgets

Today’s Producer Price Index (PPI) report shows wholesale prices rose 1.3% in September, the largest monthly increase since March 2022, and are up 6.3% over the past year, compared to 5.6% in August and the largest 12-month increase since December 2022. This marks the seventh consecutive month of wholesale inflation above 4%, the longest stretch since 2023. Core producer prices, excluding food, energy, and trade services, increased 0.7% in September and are up 5.0% over the past year.

September’s report captures the latest surge in oil and diesel prices from Trump’s war with Iran. Higher energy costs are making it more expensive for businesses to manufacture and transport goods, threatening continued price hikes for American families. The Federal Reserve’s latest Beige Book, released yesterday, found the same cost pressures, with businesses across the country reporting higher diesel prices and fuel surcharges, and expecting pass on these additional costs throughout the supply chain. Yesterday’s Consumer Price Index (CPI) report showed prices up 3.7% from a year ago, up from 3.4% in August, and core inflation increasing 0.33%, the largest monthly increase since April.

Groundwork’s Chief Economist Breyon Williams, released the following statement:

“Today’s PPI report shows a more than 10% spike in final demand energy, the highest jump since Trump first began his war with Iran. Elevated fuel prices mean companies are paying more to produce and transport goods, raising prices for nearly every product American families reach for in the grocery store or order online. As we head into the holiday season, Americans facing rising prices for everyday essentials are rightfully placing blame with the president who seems hellbent on making life less affordable.”

BACKGROUND

Trump’s war is driving up energy and transportation costs, threatening continued higher prices for families.

Trump’s tariffs and higher materials costs are putting additional pressure on businesses and consumers.