Wholesale inflation reaches levels last seen in 2022 amid soaring energy costs

Wholesale inflation surged unexpectedly last month due to a sharp rise in fuel prices, presenting a growing economic challenge for Americans and a political issue for Republicans heading into midterms. The Labor Department's producer price index surged 6.3% in September compared to a year ago, the biggest increase since late 2022.

On a monthly basis, wholesale prices jumped 1.3% from August to September, the largest increase since March 2022. Diesel fuel, crucial for long-haul trucks and freight trains, is driving up shipping and warehousing costs, which in turn is lifting food prices after they had cooled recently. Transportation and warehousing prices rose 3.4% last month, up 16% from a year ago.

Carl Weinberg, chief economist at High Frequency Economics, noted that the surge in energy prices is being felt across the economy, as inputs move through production stages via trucks, trains, and rails. Diesel prices averaged $6.32 per gallon nationwide, up from $3.66 a year ago. Both the producer price index and the consumer price index, released on Wednesday, show rising inflation across numerous goods and services.

Excluding volatile food and energy, core prices rose 0.7% from August to September, up sharply from 0.2% the previous month. Core prices increased 5% from a year ago, compared with 4.6% in August. Higher energy costs drove most of the increase, with wholesale gas prices soaring more than 20% from August to September. Other costs, including electricity, vegetables, shipping, and airfares, also rose.

Persistent inflation has eroded Americans' incomes and made the economy less appealing to consumers. Weekly paychecks, adjusted for inflation, fell for the first time since May. Polls show Trump's approval ratings for handling the cost of living and the economy have hit new lows. The Federal Reserve will meet in two weeks and may raise its key interest rate, following recent inflation reports.

Fed Chairman Kevin Warsh's upcoming remarks will be closely watched for any hints of a rate hike. Despite higher rates slowing borrowing and spending, retail sales rose faster than expected in September, partly due to increased spending at gas stations.