September 9, 2026: All Eyes on Inflation

This week’s economic calendar may be light on volume, but it is heavy on significance. Friday’s August Consumer Price Index (CPI) report arrives just five days before the Federal Reserve’s September meeting, where a 0.25% rate hike remains a realistic possibility. A softer inflation reading could give policymakers justification to pause, offering some relief to consumers and businesses facing higher borrowing costs.

Consensus expectations are relatively benign. Economists forecast headline CPI to rise 0.3% in August and 3.4% year over year. Core CPI, which excludes food and energy, is expected to increase 0.2% for the month and 2.4% from a year earlier. Those figures would suggest continued progress in the fight against inflation. Even so, an in-line CPI report may not be enough to keep the Fed on hold.

The challenge is that CPI is not the central bank’s preferred inflation gauge. Policymakers place greater emphasis on the Core Personal Consumption Expenditures (PCE) Price Index, which has recently run hotter than CPI. The gap reflects differences in methodology and weighting. PCE assigns greater importance to categories such as healthcare, transportation, and financial services, giving it a broader perspective on underlying price pressures.

Because the Fed views PCE as the more comprehensive measure of inflation, it remains the benchmark that matters most. Unless inflation data show more meaningful improvement than currently forecast, Friday’s CPI report may do little to alter expectations for next week’s meeting.

Weekly Market Update: September 9, 2026