The latest inflation data is expected to show price increases are accelerating

September's consumer price index is forecast to jump 0.6% on the month and 3.6% year over year, according to economists polled by Dow Jones. Wednesday's release is closely watched, and the consensus points to intensifying inflationary pressure as energy costs keep climbing.

The monthly estimate stands out. A 0.6% gain in a single month signals price increases are accelerating rather than merely persisting, and the source ties that acceleration directly to rising energy costs. Energy is the named driver behind the expected headline strength.

Interpretation: with the headline number projected at 3.6% annually, the print carries real weight for how traders price the path of monetary policy. A reading that matches or exceeds the 0.6% monthly forecast would reinforce the case that inflation is heating up instead of cooling. A softer outcome would cut against the accelerating-price narrative that the consensus now embeds.

Because the 0.6% and 3.6% figures are the benchmarks, the market reaction will hinge on how far the actual data diverges from them, not on the absolute level alone. Positioning into Wednesday likely reflects the hot-inflation expectation, which raises the risk of a sharp move if the print surprises in either direction.