Labour Department reported on Wednesday that its producer price index — which measures inflation before it hits consumers — climbed 2.2 per cent from a year earlier. That was up from a 2 per cent uptick in August.
On a month-to-month basis, producer prices rose 0.5 per cent from August to September, down from 0.7 per cent from July to August.
Excluding volatile food and energy prices, so-called core inflation rose 2.7 per cent in September from a year earlier and 0.3 per cent from August. The Federal Reserve and many outside economists pay particular attention to core prices as a good signal of where inflation might be headed.
Wholesale prices have been rising more slowly than consumer prices, raising hopes that inflation may continue to ease as producer costs make their way to the consumer.
But Wednesday's numbers, driven by an uptick in the price of goods, came in higher last month than economists had expected. Wholesale energy prices surged 3.3 per cent from August to September, and food prices rose 0.9 per cent after tumbling 0.5 per cent from July to August.
Last year, inflation reached highs not seen in four decades, prompting the Fed to raise interest rates aggressively.
The central bank has boosted its benchmark rate 11 times since March 2022. Those higher borrowing costs have helped cool inflation and slow a still-solid job market.
There are growing expectations that the Fed may decide to leave interest rates alone for the rest of the year.