3.6% +17.3 pts3.7% +29.0 ptssince 11 Sep

Key data points

Data for
September 2026
Release
14 Oct 2026, 12:30 UTC
Middle estimate
3.6%
80% range
3.5% to 3.8%
Most likely
3.6% 48%
Last official
3.4% Aug 2026
Release after
10 Dec 2026, 13:30 UTC
Updated
07:46 UTC delayed 15 min

Market info

Category
US economic data
Source
Prediction markets
Frequency
Every 15 minutes
Units
Percent

Settles on: BLS CPI-U all items, 12-month percent change, not seasonally adjusted, first print. From prediction markets, where traders buy and sell contracts on what will happen. Narwhal blends their prices into one probability for each outcome.

Odds by outcome

US CPI odds by outcome, September 2026
OutcomeKalshiPolymarketBlended
3.0% or lower1%<1%<1%
3.1%<1%<1%<1%
3.2%2%<1%2%
3.3%1%1%1%
3.4%2%3%2%
3.5%10%11%10%
3.6%48%46%48%
3.7%27%30%27%
3.8%8%7%7%
3.9%1%1%1%
Above 3.9%3%1%2%

Markets

Prediction markets behind these odds
MarketWeight in blend24h volumeOpen interestSettles on
Kalshi82%$33K$198KBureau of Labor Statistics
Polymarket18%$1K–Bureau of Labor Statistics

Releases ahead

US CPI releases ahead
Data forReleaseMiddle estimate80% rangeMost likely
September 202614 Oct 2026, 12:30 UTC3.6%3.5% to 3.8%3.6%
November 202610 Dec 2026, 13:30 UTC3.8%3.5% to 4.3%3.8%
December 202613 Jan 2027, market close4.1%3.2% to 4.3%Above 3.5% to 4.1%

Common questions

What do prediction markets expect for US CPI for September 2026?

A middle estimate of 3.6%, with an 80% chance of 3.5% to 3.8%. The most likely single outcome is 3.6%, at 48%.

When is US CPI for September 2026 released?

14 Oct 2026, 12:30 UTC.

Where do these odds come from?

From prediction markets, where traders buy and sell contracts on what will happen. Narwhal blends their prices into one probability for each outcome.

How often do the odds update?

This page shows odds delayed by 15 minutes. The Predictions API serves live odds on paid plans.

Are these odds a forecast or advice?

No. They reflect traders' bets, which can change quickly. They are not an official forecast or investment advice.

Source
Prediction markets, blended by Narwhal; delayed 15 minutes, as of 9 Oct 2026, 07:46 UTC
Predictions API →
API
GET /v1/predictions/topics/usa-cpi-yoy
Predictions API →
Economics
Latest official figure
United States inflation rate →
Schedule
Official release dates
CPI release schedule 2026: next CPI release date →