Will CPI rise more than 0.0% in October 2026? — Above 0.0%

- [2026-10-13] The September CPI release is scheduled for 2026-10-14 at 08:30 ET, so it has not been published yet. The BLS lists the October 2026 CPI for release on 2026-11-10 at 08:30 AM. That is the date the Kalshi market closes. https://www.bls.gov/schedule/news_release/cpi.htm - [2026-09-11] The August 2026 CPI-U rose 0.4% seasonally adjusted, after +0.1% in July. The 12-month rate was 3.4%. Gasoline rose 3.9% in August. Core CPI rose 0.3%. https://www.bls.gov/news.release/cpi.nr0.htm - [2026-09-11] Recent monthly changes (not seasonally adjusted, same release): May +0.6%, June −0.3%, July 0.0%. Monthly prints at or below 0.0% have therefore occurred this year. Gasoline swung +21.2% in March and −9.7% in June. https://www.bls.gov/news.release/pdf/cpi.pdf - [2026-10-09] The Cleveland Fed nowcast (updated 10/09) puts October 2026 CPI at +0.27% m/m, seasonally adjusted. Core is +0.20% m/m. The year-over-year figure is 3.63%. The September nowcast is 3.60% y/y. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-12] Forecasts for September (not October) are hot. The Cleveland Fed nowcast is +0.53% m/m. The FinancialJuice preview lists a +0.6% consensus. Core is expected at about +0.2%. Energy, from the Hormuz disruption, is the driver. https://features.financialjuice.com/2026/10/12/us-cpi-prep-14th-october - [2026-10-07] AAA gasoline averaged $4.33/gal in September, a record September. It was $4.41 on Oct 1 and $4.37 on Oct 7, against $3.16 a year earlier. October gasoline is starting at or slightly below September's average level. https://admiralmarkets.com/analytics/traders-blog/us-cpi-preview-september-2026-forecasts-and-the-core-cpi-outlook - [2026-10 STEO] The EIA October Short-Term Energy Outlook forecasts retail gasoline in October about the same as September, then slowly decreasing with crude. https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf - [2026-10-12] Oil was reported up 3.7% on the week of Oct 12. The Fed hiked 25bp in September, with the funds rate at 3.75–4.00%. The next FOMC meeting is Oct 27–28. Pressure on prices is upward. https://mfdevdan.substack.com/p/week-ahead-market-report-12th-october - [2026-10-09] Truflation's October forecast is +0.3% m/m headline and 3.7% y/y. Core is +0.2% m/m. This is a third-party estimate. https://bitbase.com/news/us-cpi-to-rise-to-3-6-september-truflation-forecasts - [2026-10-12] Regional Fed price indexes (prices paid and received) rose in September to their highest levels since 2022. https://investing.com/analysis/economic-week-ahead-cpi-retail-sales-and-factory-data-take-center-stage-200689352 - [2026-10-07] No October 2025 CPI was published because of the 2025 shutdown. This affects the October 2026 y/y comparison but not the m/m change. The market's shutdown-delay clause matters only if a new lapse occurs. I found no report of one. https://admiralmarkets.com/analytics/traders-blog/us-cpi-september-2026-scenarios-fed-october BOTTOM LINE: Early indicators point to a positive October m/m print. The Cleveland Fed nowcast is about +0.27%, and gasoline is holding near record levels. Core is running about 0.2% a month. The main downside risk is an energy price reversal, as in June (−0.3%) and July (0.0%). It is also unclear whether the market resolves on the seasonally adjusted or the unadjusted figure. NOT FOUND: the September CPI result (due 10/14), an October consensus from economists, October-month gasoline data after Oct 7, and any shutdown or BLS delay notice for the Nov 10 release.

- [2026-10-13] Base rate (my background knowledge, not sourced this session): seasonally adjusted headline CPI-U has printed 0.0% or lower in roughly 10–15% of months since 2010. Most of those were energy-driven drops, such as March–April 2020, late 2008, and Oct 2023 at 0.0%. Prints of +0.1% or more are the large majority of months. Sources: none. - [2026-09-11] The latest published print is August 2026 CPI at +0.4% m/m (3.4% y/y), with core +0.3%. Energy rose 2.1% on the month and 16.3% y/y. https://admiralmarkets.com/analytics/traders-blog/us-cpi-preview-september-2026-forecasts-and-the-core-cpi-outlook - [2026-10-13] September CPI is due 2026-10-14. Consensus is about +0.6% m/m (3.7% y/y). The Cleveland Fed nowcast is +0.53% headline and +0.20% core. Energy is expected up about 5.5%. https://investinglive.com/stocks/us-cpi-preview-energy-set-to-lift-inflation-to-3-7-core-seen-steady-at-2-4/ - [2026-10-13] A Kalshi September CPI m/m ladder had about 60% of its probability on 0.6% or higher, per a Substack summary. This is a sibling market for a different month, and the Substack's own sourcing is unclear. https://thealetheanarrative.substack.com/p/the-cpi-odds-are-hot-history-says - [2026-10-12] AAA national average gasoline was $4.36 on 10/12, down from $4.41 on 10/1 and $4.48 on 9/24. The September monthly average was a record $4.33. https://gasprices.aaa.com/news/ - [2026-10-08] Gasoline is falling slowly in October but remains at record highs for autumn. The first week of October (about $4.36–4.41) averaged about 1% above the September average (about $4.33). Another source puts September at $4.36. https://newsroom.aaa.com/2026/10/pump-prices-remain-at-record-highs-for-autumn/ (snippet only; the page returned 403 on fetch) - [2026-10-08] Gasoline is about 48% above its level at the start of the Iran conflict (Feb 26, 2026, $2.96). The peak was $4.55 in the week of May 21 (Finder; AAA and LendingTree give $4.48). Energy is the main swing factor for October. If gasoline falls sharply later in October, headline could soften. Core is running about 0.2–0.3% m/m, which sets a positive floor. https://www.finder.com/economics/gas-prices - [2026-10-13] The Fed hiked to 3.75–4.00% on 9/16. The next FOMC is 10/28. September payrolls were weak at +29k. The inflation backdrop is an energy shock, with y/y headline CPI at 3.8% in April and 3.4% in August. https://investinglive.com/stocks/us-cpi-preview-energy-set-to-lift-inflation-to-3-7-core-seen-steady-at-2-4/ - [2026-10-12] The October 2026 CPI release is scheduled for Tue 2026-11-10 at 8:30 ET, matching the contract's close. The BLS schedule lists the September release for 10/14. No shutdown affecting the release was found. A shutdown delayed the January CPI to 2026-02-13, and the October 2025 CPI was never published. https://thriveinmarkets.com/calendar/indicator/cpi/ - [2026-10-13] Comparable case: in October 2023, gasoline fell sharply. Consensus m/m was +0.1% and the Cleveland nowcast was about 0.07%, and the print came in at 0.0%. A sub-0.1% October needs a gasoline drop of roughly 5–10% on the month. That is not what current pump data show. https://seekingalpha.com/mp/1232-the-savvy-investor/articles/5948580-chart-update-november-13th-waiting-for-economic-data (nowcast figures only; the 0.0% outcome is from my background knowledge) - [2026-10-13] The Cleveland Fed nowcast page and the October CPI nowcast figure could not be extracted. The page rendered without its data table. The only October-specific forecasts are therefore indirect. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting BOTTOM LINE: Historically about 85–90% of months print above 0.0% m/m. The current setup (core near +0.2–0.3%, gasoline near record levels and only easing slightly from September's average) leaves positive odds above that base rate. The main risk is a sharp mid-to-late October fall in energy prices. A small tail risk is a data delay, but nothing indicates one. NOT FOUND: Any October 2026 m/m consensus or nowcast, since these are normally published only after the 10/14 release. The Kalshi October CPI ladder. The BLS "seasonally adjusted" wording in the contract. The September CPI actual (due 10/14). A fetched primary BLS page for the September data.

YES means: the BLS-published October 2026 CPI-U one-month change, as a single-decimal figure, is +0.1% or higher. A print of 0.0% or lower resolves No. - [2026-10-12] The EIA weekly series puts the September average at $4.355, up from $4.058 in August. The weekly readings were $4.478 on Sep 21 and $4.465 on Sep 28, then $4.354 on Oct 5. The Oct 5 reading is about equal to the September average. For October gasoline to pull the headline to 0.0%, the monthly average would need to fall well below $4.35. That would take a drop of roughly 5% or more, and prices would need to be near $4.1 on average. The AAA reading at $4.36 on Oct 12 shows no such drop yet (the Oct 1 and Oct 12 AAA readings are in the prior reports). https://www.stocktitan.net/articles/september-2026-cpi-inflation-report - [2026-10-12] Mechanism: the CPI gasoline index tracked the EIA monthly average closely, within 1.7 points, each month from March to August. That means the pump data are a reliable guide. Oct 1–12 pump prices sit about level with the September average, so the October gasoline contribution is near zero to slightly negative, not a large drag. https://www.stocktitan.net/articles/september-2026-cpi-inflation-report - [2026-10-01] AAA says crude dipped back into the $90s. The September monthly average was $4.33. October pump prices have started at about that level, so the energy shock stays in the price level. A drop below zero would need a new fall in prices. https://gasprices.aaa.com/national-average-dips-following-record-setting-september/ - [2026-10-13] Brent is still above $100 (reported Oct 13). Goldman's expected October hike assumed oil would fall to about $85, which has not happened. Retail gasoline lags crude, so there is no wholesale-driven price collapse to push October gasoline sharply lower. https://investinglive.com/stocks/us-cpi-preview-energy-set-to-lift-inflation-to-3-7-core-seen-steady-at-2-4/ - [2026-10-09] The Cleveland Fed's October nowcast is +0.27% headline and +0.20% core, and the Cleveland Fed states all its CPI series are seasonally adjusted. The Q4 annualized CPI nowcast is 4.39%, which implies positive monthly prints across the quarter. Q3 is 1.57%. For the October print to round to 0.0%, the miss versus the nowcast must be about 0.2 to 0.3 points. That is large next to the typical nowcast miss. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-12] Core is the floor. Core has run about 0.20–0.25% per month apart from volatile categories. The September preview has core at about 0.16–0.2%. Even with energy flat, core (about 80% of the basket) adds roughly +0.15%. For a 0.0% headline, energy would have to fall by about 2–3% in the month on top of this. https://features.financialjuice.com/2026/10/12/us-cpi-prep-14th-october - [2023-11-14] The closest precedent for a 0.0% October is 2023. A 5.0% gasoline fall (energy −2.5%) was needed to offset shelter and produce an unchanged index, with core at +0.2%. The same size of fall from a record base is a stretch, because the EIA expects October prices to be about the same as September, then slow easing. https://www.bls.gov/news.release/archives/cpi_11142023.htm - [2026-10-07] The EIA October STEO forecasts October gasoline about equal to September, with only gradual declines after that. The 2026 average is $3.91, revised up from $3.84. Revisions have been upward, not downward. https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf - [2026-10-12] The Fed's reaction function is hawkish. The minutes of Oct 7 say most officials see another hike as likely by year end. That is consistent with price pressure that has not broken, so a deflationary October is not the central case. https://www.stocktitan.net/articles/september-2026-cpi-inflation-report - [2026-10-13] On timing, the BLS schedule fetched today still lists the October 2026 CPI for Nov 10 at 08:30. This matches the Kalshi close. No delay notice appears. The BLS FAQ on the 2025 shutdown also schedules the final C-CPI-U for Oct–Dec 2025 on Nov 10, 2026, which suggests normal operations. https://www.bls.gov/schedule/news_release/cpi.htm - [2026-10-13] Single most likely path to YES: gasoline's October average stays within about ±3% of September's $4.35, core prints at about +0.2%, and the SA headline comes in at +0.2% to +0.3%. The prerequisites are no crude collapse (Hormuz or an Iran deal) in the last two weeks of October, and a Nov 10 release on schedule. The June precedent, a 9.7% gasoline fall after a deal, shows the risk. Only a similar fall in October would push the print to 0.0% or below. https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf BOTTOM LINE: Pump prices are flat at record levels, and core adds about +0.15%. Hence a 0.0% or lower October would need an energy drop of roughly 2–3% or more in the month, which current data do not show. YES is the default path, and the main threat is a sharp late-October crude collapse. NOT FOUND: the September CPI result (due Oct 14). Any economist consensus for October. Pump data after Oct 12. An October seasonal factor for gasoline. A Kalshi October ladder (deliberately not searched). Any shutdown or delay notice for Nov 10.

YES means: the BLS-published October 2026 CPI-U one-decimal month-over-month change is +0.1% or higher. A print of 0.0% or below resolves NO. - [2026-11-10] The October CPI is scheduled for Nov 10 at 08:30, the same day the contract closes. BLS lists this date through 2027. I found no notice of a delay. The NO route through data failure is therefore closed unless a new lapse occurs. https://www.bls.gov/schedule/news_release/cpi.htm - [2026-09-02] A continuing resolution signed Sept 2 funds the government through Dec 11. No Oct 1 shutdown occurred, so there is no shutdown extension and no ambiguity about the publication date. The next funding cliff falls after the Nov 10 release. A secondary site reports two lapses earlier in 2026, in Jan–Feb and Feb–Apr. https://polymarkettrader.com/events/us-government-shutdown-october-2026/ - [2026-10-13] The technicality that favours NO: the contract needs more than 0.0% at one decimal. A true change of +0.04% rounds to 0.0% and resolves NO. The Cleveland Fed nowcast of +0.27% (updated 10/09) leaves about 0.2 to 0.3 points of cushion. That is a thin margin against energy-driven forecast errors. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-13] A NO outcome needs a gasoline drop of roughly 5% or more in the October CPI. Brent sits near $105, down 1.5% on the day. It was $108 on Oct 12 and $105.7 the day before. It is up about 70% year over year. Crude is not collapsing. Prices at the pump are already high, so a reversal would need a Hormuz deal or a Russia supply surprise. The Russian diesel supply pledge is the one downside catalyst I found. https://fortune.com/article/price-of-oil-10-12-2026 and https://cnbc.com/2026/10/13/oil-prices-today-brent-wti-hormuz.html (snippet only; the fetch failed) - [2026-10-08] Attacks on tankers have intensified. Brent rose about 5% on Oct 8 as UK officials reported at least nine Hormuz attacks so far in October. A Gulf storm also threatened refining. All of this argues against a pump-price collapse. For NO, a diplomatic breakthrough would have to arrive in the next 2–3 weeks. https://oilprice.com/Latest-Energy-News/World-News/Oil-Jumps-2-as-Iran-Steps-Up-Attacks-on-Hormuz-Tankers.html - [2026-10 STEO] The EIA put September's retail gasoline average at $4.35 and Sept RBOB futures at $3.36, up from $3.19 in August. September's 17-cent RBOB rise and the wholesale margin could pass through into October retail prices. That reduces any October fall. Heating oil futures rose to $4.86 from $4.23. The EIA lowered its crack-spread outlook only gradually and says wholesale declines do not immediately reach retail prices. https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf - [2026-10-12] Where the NO case has some basis: seasonal adjustment. After a hot September, any NSA-to-SA gap or a gasoline give-back could pull October down. The contract text does not say "seasonally adjusted", but sibling Kalshi core contracts do settle on the SA series. That is the likely basis here too. I found no source with the October seasonal factors. https://ticker-tracker.com/m/kxcpicore - [2026-07-31] There is a track record of soft prints in 2026. The Jul 0.0% NSA print and the Jun −0.3% to −0.4% decline followed gasoline falls of 9.7% in June and 2.9% in July. Those months had a sharp, observable pump-price decline, which October currently lacks. So NO has precedent only if energy rolls over. https://tradingeconomics.com/united-states/inflation-cpi - [2026-10-12] Kalshi's core CPI ladder for October shows "above 0.0%" priced at about 94%, with "above 0.1%" at 80%. That sibling market is for core and is a snapshot from about Oct 10. Core would need to print near zero for NO, and headline energy would have to fall on top of that. The Oct core nowcast is +0.20%. https://kalshi.com/markets/kxcpicore/cpi-core/kxcpicore-26oct - [2026-10-12] Traders' September consensus is hot, at +0.5% to +0.6% m/m. If September's energy spike is partly transitory, October gets a payback. Cleveland's +0.27% October reading already embeds the energy plateau, so the payback argument has to rely on the Oct 14 print revealing a smaller September gasoline rise. Nothing found supports that. https://www.cnbc.com/2026/10/12/inflation-will-remain-sticky-in-2026-according-to-prediction-markets.html BOTTOM LINE: The NO case is weak. It needs a roughly 5% or larger fall in October gasoline, or a rounding result of 0.0%. Both oppose current oil, pump and nowcast data. The residual NO paths are an energy reversal from a Hormuz or Russia deal, and the one-decimal rounding cut. NOT FOUND: the Sept CPI actual; an economist consensus for October m/m; Kalshi's own October CPI ladder values; AAA pump prices after Oct 12; October seasonal factors; any BLS delay notice for Nov 10; a primary fetch of the Oct 13 CNBC oil article (it failed).