September CPI: The Last Inflation Read Before the Fed Decides

One Number, Two Paths: What September CPI Means for the Fed

The US September CPI report, scheduled for release on 14 October at 8:30 ET (13:30 UK), arrives as the last major inflation data point the Federal Reserve will see before its 28 October decision. Consensus expects the headline rate to climb to around 3.7% year-on-year from 3.4% prior, with the monthly headline reading expected near 0.6%, driven largely by elevated petrol prices. Core CPI is expected near 2.4% year-on-year.

The headline move matters less to the Fed than what sits underneath it. Analysis suggests the central bank will focus on the monthly core reading as the cleaner signal of underlying price pressure. A core print of 0.3% month-on-month or higher could reignite expectations for an October hike, while a reading of 0.2% or below would likely keep that option off the table and shift attention toward December. Sixteen of nineteen FOMC members, according to reports, projected at least one additional hike this year at the September meeting, when the committee did raise rates.

The backdrop complicates the read. Weak September payrolls have already pushed market pricing toward a low probability of action at the October meeting, leaving the CPI report to either confirm that view or challenge it sharply.

For markets, the stakes are clear and two-sided. A hot core reading would push Treasury yields higher from levels already near multi-decade highs, lift the dollar, and put pressure on rate-sensitive assets globally — Bunds and gilts would follow Treasuries, and equities near record highs would face a renewed headwind. A soft core, by contrast, could extend the easing in rates seen late last week and provide support for risk assets. EUR/USD, gold, and US equities are all in the frame.

The timing adds another layer. US cash bonds are closed on Monday 12 October for Columbus Day, leaving European rates markets — Bunds and gilts — to trade without a Treasury anchor ahead of the release. The UK 30-year gilt yield reached its highest level since 1998 in early October, and with no coupon supply scheduled this week, the CPI print will be the dominant driver for global rates. European equities, which analysis suggests are more yield-sensitive at current levels than their US counterparts, face the same binary setup.

Oil, Gas and Rates: The Context Surrounding the CPI Print

Crude markets are carrying their own uncertainty into the week. On 9 October, Trump indicated the US would not strike Iran before the 3 November midterms and described talks as productive, which pulled Brent off its recent highs, though the contract remained above the hundred-dollar mark. Iran is reviewing a US response to its proposal to reopen the Strait of Hormuz. Eleven tanker attacks in the week to 4 October pushed freight rates to records, and Houthi strikes on Riyadh's main airport add a further escalation risk. Elevated oil prices feed directly into the headline CPI reading, making the geopolitical backdrop relevant to Wednesday's number.

EU gas storage, meanwhile, sat at its lowest seasonal level since records began as of early October, with Germany notably below the broader EU average. ENTSOG's Winter Supply Outlook warned that storage could fall sharply by end-winter if LNG availability remains constrained — a scenario tied in part to the same Hormuz disruption. TTF remains vulnerable to any cold snap or further supply shock.

Wednesday's Print, Then Earnings and the ECB

The immediate catalyst is the 14 October CPI release. A core reading above the 0.2% threshold could force a rapid reassessment of October Fed pricing, with Treasury yields, the dollar, and EUR/USD the most direct expressions of that shift. A soft core print could extend the recent easing in rates and support equities.

Also on 14 October, ECB President Lagarde is scheduled to speak twice. Market pricing for the ECB's own 29 October decision has swung from favouring a hike to leaning toward a hold, and any signal from Lagarde on the same day as US CPI could amplify moves in EUR/USD and Bunds. Major US bank earnings begin on 13 October, with ASML and TSMC reporting later in the week — results that could independently move European tech and semiconductor stocks regardless of what CPI delivers.