# U.S. consumer price index rose 0.6% in September

*Economics. 42% certain. Friday, 16 October 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**Headline CPI hit 3.6% year-over-year and Core CPI rose 0.2% month-over-month.**

The Bureau of Labor Statistics released the September consumer price index on Thursday, 15 October. The overall CPI increased by 0.6% from the prior month. The headline inflation rate for the year stood at 3.6%.

The annual CPI figure of 3.6% was part of the September report. It represented the year-over-year change in consumer prices. The measurement follows the standard BLS methodology.

Core consumer prices, which exclude food and energy, rose 0.2% month-over-month in September. The Core CPI month-over-month increase was recorded alongside the overall CPI rise. This Core figure was also released on Thursday, 15 October.

The Producer Price Index for September was not released as part of the October data set. No year-over-year PPI figure was published for that month. The absence of a September PPI report left a gap in the producer-side price data.

The CPI release provided the most recent inflation numbers available as of Friday, 16 October. No additional price-index information was issued on Friday.

## Analysis

The modest 0.6% monthly CPI rise and a 3.6% annual headline suggest that consumer-price pressures have moderated compared with earlier months in the year. Because the CPI is the primary gauge the Federal Reserve monitors for inflation, a slower pace may reduce urgency for aggressive rate hikes, though the central bank will still weigh a range of indicators before adjusting policy.

The lack of a September Producer Price Index removes a forward-looking signal on wholesale price trends.

If subsequent CPI releases continue to show modest gains, the perception of easing inflation could solidify, potentially influencing interest-rate decisions.

### Background consulted for the analysis

- [Producer Price Index Home : U.S. Bureau of Labor Statistics](https://www.bls.gov/ppi/)
- [United States Producer Price Index (PPI) YoY](https://www.investing.com/economic-calendar/ppi-734)
- [Producer Price Indexes - August 2026](https://www.bls.gov/news.release/pdf/ppi.pdf)
- [Food Price Outlook - Summary Findings | Economic Research Service](https://www.ers.usda.gov/data-products/food-price-outlook/summary-findings)

## What this was built from

- **September Inflation US - Annual**: 3.6%, 42%; settles Thursday, 15 October 2026 (polymarket). [Market](https://polymarket.com/event/september-inflation-us-annual)
- **September Inflation US - Monthly**: 0.6%, 43%; settles Thursday, 15 October 2026 (polymarket). [Market](https://polymarket.com/event/september-inflation-us-monthly)
- **Core CPI YoY - September 2026**: 2.5%, 48%; settles Thursday, 15 October 2026 (polymarket). [Market](https://polymarket.com/event/core-cpi-yoy-september-2026)
- **Core CPI MoM - September 2026**: 0.2%, 51%; settles Thursday, 15 October 2026 (polymarket). [Market](https://polymarket.com/event/core-cpi-mom-september-2026)
- **PPI YoY - September 2026**: did not happen, 63%; settles Friday, 16 October 2026 (polymarket). [Market](https://polymarket.com/event/ppi-yoy-september-2026)