Will year-over-year Core CPI inflation for 2026 fall below 2.2%? — Yes

- [2026-09-11] BLS reported August 2026 CPI: headline CPI rose 3.4% YoY (unchanged from July); core CPI (all items less food and energy) rose 2.4% YoY, down from 2.5% in July — "Core inflation rose 2.4% over the 12 months through August — the lowest core inflation rate since March 2021" — https://www.usinflationcalculator.com/inflation/us-cpi-august-2026/100073342/ - [2026-09-11] The August core print came in slightly hotter than expected on a monthly basis: stripping out volatile food and energy prices, core CPI posted a 0.3% monthly gain, 0.1 percentage point higher than forecast, while the core annual rate came in at 2.4%, matching the estimate — https://www.cnbc.com/2026/09/11/cpi-inflation-report-august-2026.html - [2026-09-11] BLS's own release language: "CPI for all items increases 0.4% in August; gasoline rises," with the index for all items less food and energy up 2.4 percent over the year (NSA) — https://www.bls.gov/cpi/ - [2026-10-07] The BLS official schedule confirms the next release, covering September 2026 data, is set for October 14, 2026 at 8:30 AM ET, with no indication of delay as of today — https://www.bls.gov/cpi/ - [2026-10-02/10-06] The Cleveland Fed's inflation nowcast (updated October 6, 2026) projects September 2026 core CPI at 2.39% YoY and headline CPI at 3.60% YoY, implying core would still sit just above the 2.2% threshold — https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-04] A CPI preview site summarized the same Cleveland Fed nowcast, noting "the Cleveland Fed's nowcast has headline inflation rising to 3.6% while core inflation holds near 2.4%" ahead of the October 14 release — https://jorgai.com/blog/september-2026-cpi-report-preview-october-14 - [2026-10-06] Regional BLS data for August 2026 shows core inflation varying by region: South region core at 2.1% YoY, West region core at 2.4% YoY, Midwest core at 2.7% YoY, underscoring the national 2.4% figure masks regional dispersion around the 2.2% strike — https://www.bls.gov/regions/southeast/news-release/consumerpriceindex_south.htm - [2026-10-07] Remaining 2026 CPI releases relevant to this market: September data on Oct 14, 2026; October data on Nov 10, 2026; and November data (the last covered release) on Dec 10, 2026, 8:30 AM ET — https://www.bls.gov/schedule/news_release/cpi.htm - [2026-10-07] No evidence found of any active 2026 government shutdown disrupting the BLS data collection or release schedule; all shutdown-related disruptions found in search results pertain to the FY2026 (fall 2025) shutdown that ended November 13, 2025, and BLS has since returned to its normal monthly cadence — https://www.congress.gov/crs-product/R48832 - [2026-09-11] Trend context: core CPI YoY path through 2026 has been 2.5% (Jan), 2.5% (Feb/Mar per some trackers), rising to 2.6-2.9% in spring, then declining back to 2.5% (July) and 2.4% (August) — "core inflation measured 2.4%, a modest step down from the 2.5% recorded over the prior 12-month period" — https://finance.yahoo.com/economy/articles/u-cpi-rose-0-4-123718937.html - [2026-09-11] TD Economics flagged that despite the YoY dip, the 3-month annualized core rate (2.0%) is softer than the YoY figure, but non-housing services inflation remains sticky: "posted its strongest monthly gain since January and is still running north of 3% on a twelve-month basis – underscoring the stickiness in this component of inflation" — https://economics.td.com/us-cpi BOTTOM LINE: As of the most recent confirmed release (August 2026 data, published 2026-09-11), YoY core CPI stands at 2.4% — its lowest since March 2021 but still 0.2 points above the 2.2% threshold — and the Cleveland Fed nowcast for September (due 2026-10-14) points to a similar ~2.4% reading, suggesting no release so far has crossed below 2.2% and the near-term trajectory does not clearly point toward it before year-end. NOT FOUND: No confirmation of the actual September 2026 CPI print (release is scheduled for 2026-10-14, after today's data cutoff); no evidence of any 2026 (current) government shutdown or other disruption threatening the October, November, or December 2026 CPI release dates.

- [2026-09-11] The BLS reported August 2026 core CPI (all items less food and energy) rose 2.4% year-over-year, "a modest step down from the 2.5% recorded over the prior 12-month period," matching consensus. https://www.bls.gov/news.release/cpi.nr0.htm - [2026-09-11] Multiple outlets confirmed this was the lowest monthly year-to-year growth in nearly five and a half years, with the last time annual core inflation was this low being March of 2021, when it was 1.6% . This establishes the key base-rate fact: sub-2.2% core CPI prints have not occurred in roughly 5.5 years. https://www.newsbusters.org/blogs/cnsnews/craig-bannister/2026/09/11/annual-core-inflation-falls-lowest-level-more-five-years - [2026-09-11] Historical context: core CPI jumped to 3.0% the next month (April 2021), ending a 12-month streak under 2.0%, and has not fallen below 2.0% in any month since , meaning the entire 2021-2026 period has stayed above 2.0%, with readings below 2.2% essentially absent since spring 2021. - [2026-10-06] Cleveland Fed's daily inflation nowcast (updated Oct 6) puts core CPI year-over-year at 2.30% for October 2026 and 2.39% for September 2026, both above the 2.2% threshold but trending down toward it. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-06] The same nowcast shows Q4 2026 core CPI running at a 2.56% annualized quarterly pace, slightly above the recent trend-deceleration implied by monthly prints, suggesting some risk of re-acceleration rather than continued decline toward 2.2%. https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-10-04] A CPI preview site summarized: "The Cleveland Fed's inflation nowcast, updated October 2, projects September CPI up 0.53% for the month and 3.60% over the year, with core CPI up 0.20% for the month and 2.39% over the year." https://jorgai.com/blog/september-2026-cpi-report-preview-october-14 - [2026-09-16] At the same time, the FOMC's September Summary of Economic Projections (a top-down expert forecast) raised its median 2026 core PCE inflation forecast to 3.4% (from 3.3% in June), far above the 2.2% CPI threshold in this question, signaling the Fed itself does not expect a rapid return to target this year. https://fred.stlouisfed.org/blog/2026/09/fomc-summary-of-economic-projections-september-2026/ - [2026-09-16] TD Economics noted the Fed's own narrative: inflation is still seen as "elevated" and the FOMC raised its core PCE inflation forecast to 3.4% (previously 3.3%) for 2026 while 2027 was unchanged at 2.5% , implying expert consensus does not foresee a swift fall to 2.2% or below. https://economics.td.com/us-fomc-statement - [2026-10-07] Monthly core CPI print history for 2026 (BLS/Investing.com): Jan 2.6%, Feb 2.5%, Mar 2.6%, Apr 2.8%, May 2.9%, Jun 2.6%, Jul 2.5%, Aug 2.4% — showing a mid-year peak near 2.9% followed by a steady ~0.1pp/month decline since June, the fastest sustained disinflation streak in this cycle. https://www.investing.com/economic-calendar/united-states-core-consumer-price-index-(cpi)-yoy-736 - [2026-10-07] Richmond Fed research notes that historically FOMC median inflation projections have tended to overstate near-term disinflation and that policymakers' projections for inflation typically converge back to the 2 percent target, with median projections downward sloping since 2021 (when inflation was above target) — a pattern of chronic over-optimism about disinflation timing that argues for caution in assuming rapid further declines. https://www.richmondfed.org/research/national_economy/macro_minute/2026/sep_by_sep_how_fed_walks_inflation_back_to_2_percent BOTTOM LINE: The reference class (monthly core CPI YoY prints since 2021) shows essentially no observation below 2.2% in over five years — the current 2.4% (August 2026) is already the lowest since March 2021 — and reaching below 2.2% in the three remaining 2026 releases (Sep, Oct, Nov data) would require an unprecedented continuation of the recent ~0.1pp/month deceleration without reversal, something nowcasts (Cleveland Fed ~2.3-2.4%) and Fed SEP projections (elevated core PCE outlook) do not currently support. NOT FOUND: No explicit historical base-rate study of "probability core CPI falls below X within N months of being at Y%"; no direct market-implied probability data for this exact Kalshi contract (excluded per instructions); no primary-source confirmation of the September 2026 CPI print (due Oct 14, after today's date in this exercise) since it has not yet been released as of October 7.

YES means: The BLS reports a year-over-year Core CPI figure below 2.2% in the September (Oct 14), October (Nov 10), or November (Dec 10) 2026 CPI releases — i.e., the disinflation trend that brought core CPI to 2.4% in August continues or accelerates enough to cross the 2.2% threshold at least once before the market closes. - [2026-09-03] TD Economics' decomposition shows the core-goods drag from tariffs has already roughly halved from its late-2025 peak, with goods prices excluding food & energy running at an annualized rate of 1.5% at their peak, contributing 0.4 percentage points to core inflation, with that contribution now having slowed to about half of that , and more tariff-exposed categories "have all shown either a meaningful slowing in inflation or outright price declines over the last three months" — a structural tailwind that could keep pushing core lower into Q4. - [2026-09-03] TD explicitly frames the broader 2026 trend as fading tariff pass-through: assuming we're closer to a steady state on tariff policy, the price effects on consumer inflation should continue to fade through H2-2026 , which is the single clearest mechanistic path toward a sub-2.2% print later this year. - [2026-09-30] CF Benchmarks' Q4 2026 outlook confirms the momentum signal is already consistent with sub-2.2%: Three-month annualized core CPI near 2% is encouraging, although volatile components can obscure persistent services pressure — meaning the short-run trend rate is already running below the 2.2% YoY strike, and a few more such months would mechanically pull the 12-month rate down to it. - [2026-09-30] The same report notes core services excluding shelter increased roughly 0.5%, partly on a 2.7% jump in airfares, while falling technology prices and fading tariff base effects helped the annual comparison — showing that even with some sticky services noise, technology-price declines and base effects are actively pulling the YoY figure down. - [2026-08-?] An independent CPI-tracking report on the June 2026 print documents an outright disinflationary shock that supports the "it can happen" case: June core CPI was reported flat at 0.0% (+2.6% YoY) — well below XTech's flat-headline call and the −0.1% consensus, a broad-based disinflationary surprise that caught the whole market leaning too hot , with the miss driven by a 2.0% drop in motor-vehicle insurance, softer communication, apparel, medical care, and used vehicles, and an unusually weak +0.1% shelter print — proving multiple core components can simultaneously undershoot in a single month, which is exactly the kind of broad-based miss needed to cross 2.2%. - [2026-07-14] EY's CPI commentary explicitly flags favorable base effects as a forward tailwind: EY wrote it expects the August CPI report to provide some additional reassurance, aided in part by favorable base effects that should help push annual inflation measures modestly lower , and separately forecasts core CPI inflation to ease toward 2.4% y/y by year-end — already close to the 2.2% strike even under EY's base case, leaving only a modest further surprise needed for YES. - [~2026, pre-Sept 2025 dataset] A shelter-inflation forecasting model incorporating the "rent gap" (new-tenant vs. all-tenant rent) — the CPI's largest weighted component — projects shelter inflation to decelerate sharply through 2026: shelter inflation will be 2.5 percentage points over the first half of 2026, 2.1 percentage points over the second half of 2026, and 2.0 percentage points over the first half of 2027 on an annualized basis , which, if realized, would remove one of the biggest remaining upward pressures on core CPI and is consistent with sub-2.2% core prints by Q4. - [2026-09-11] Even the hot-headline August report confirms the YoY core print already fell to its lowest since the early pandemic-recovery period, with TD Economics' own data table showing on a twelve-month basis, price growth edged down to 2.4%, while the three-month annualized sits at a slightly softer 2.0% — directly indicating the shorter-run trend is already consistent with (or below) the 2.2% target, so persistence of that 3-month pace through two more releases is the most direct arithmetic path to YES. - [2026-10-06] The Cleveland Fed's own daily nowcast, while still printing a central estimate near 2.3-2.4% for September/October, implicitly contains confidence intervals; given the model's own historical overshoot/undershoot bands and the degree to which June's 0.0% MoM core surprise beat even sophisticated trackers, a repeat 1-2 tick downside miss in any of September, October, or November is plausible without requiring an unprecedented regime change — https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting - [2026-09-25] A portfolio-strategy commentary flags that while there is upside shelter risk, the dominant narrative remains deceleration: Rent and owners' equivalent rent (OER) have generally decelerated in recent years, but one prominent real-time measure of rents points to a possible pickup in the months ahead — even bearish shelter commentary concedes the multi-year trend direction has been down, the precondition for continued progress toward 2.2%. BOTTOM LINE: The strongest YES case rests on three converging mechanisms already visible in the data — fading tariff pass-through roughly halving the core-goods drag, a 3-month annualized core CPI pace already near 2.0% (below the 2.2% strike), and a credible model-based shelter deceleration to ~2.1% annualized in H2 2026 — any one of which, if it persists or modestly intensifies (as it already did unexpectedly in June 2026's flat core print), could pull the 12-month core rate under 2.2% in the September, October, or November 2026 release. NOT FOUND: No primary-source economist forecast explicitly calling for a sub-2.2% YoY core CPI print in any specific remaining 2026 release (September, October, or November data); no confirmation of the actual September 2026 CPI data (due October 14, after this report's cutoff).

YES means: a monthly BLS CPI release dated within 2026 (September data on Oct 14, October data on Nov 10, or November data on Dec 10) reports headline "core CPI" (all items less food and energy) year-over-year at or below 2.2%. - [2026-08-14] The Philadelphia Fed's Q3 2026 Survey of Professional Forecasters (32 panelists) put current-quarter (Q3) core CPI inflation at an annual rate of 2.7%, and measured on a fourth-quarter over fourth-quarter basis, headline CPI and core CPI inflation in 2026 are expected to average 3.6 percent and 2.8 percent, respectively, little changed from the previous estimates — https://www.philadelphiafed.org/surveys-and-data/real-time-data-research/spf-q3-2026 - [2026-08-14] The same survey's quarterly table shows professional forecasters expect core CPI running at a 2.8% annualized rate in 2026:Q4, i.e. still 0.6pp above the 2.2% strike, not materially revised down from the prior survey — https://www.philadelphiafed.org/surveys-and-data/real-time-data-research/spf-q3-2026 - [2026-10-07] Trading Economics' consensus/model forecast for the September 2026 print (due Oct 14) is 2.5% core CPI YoY, slightly hotter than the Cleveland Fed's nowcast of 2.39%, indicating Street expectations do not point toward a sub-2.2% reading in the very next release — https://tradingeconomics.com/united-states/core-inflation-rate - [2026-10-05] Nowflation's forecast tracker (updated Oct 5) shows the ensemble, Cleveland Fed, and Street consensus all pointing to a September headline CPI near 3.6-3.7% YoY, consistent with no imminent core break below the 2.2% threshold (this is a sibling headline-CPI market reference, not the core-strike contract) — https://nowflation.com/cpi-preview/september-2026 - [~2026-04/05, "187 days ago"] RBC Economics' 2026 outlook argued we remain concerned about the likelihood it remains stuck closer to 3% throughout 2026... The combination of a tight labor market, strong consumer spending, tariff pass through, and a lagged housing inflation measure is a recipe for sticky inflation — https://www.rbc.com/en/economics/us-analysis/us-featured-analysis/deep-dive-how-to-monitor-us-inflation-in-2026/ - [~2026-04/05] RBC's companion piece quantified the tariff channel: after adding tariffs to the mix, the contribution of core goods to core CPI added 0.3 percentage point to core CPI in Q3, well above the pre-COVID norm... we have yet to see the full passthrough of tariffs to consumer goods prices, which we think will peak in Q2 2026 — https://www.rbc.com/en/economics/us-analysis/us-featured-analysis/five-themes-for-the-us-economy-in-2026/ - [~2026-04/05] RBC also flagged the housing/OER mechanism as a structural floor: OER represents a hypothetical measure of what homeowners would pay themselves to rent their own homes...we simply don't expect OER to provide much help in moving inflation back towards the Federal Reserve's 2% target in 2026 , a category that is roughly one-third of the core basket — https://www.rbc.com/en/economics/us-analysis/us-featured-analysis/five-themes-for-the-us-economy-in-2026/ - [2026-08-12, "55 days ago"] EY-Parthenon's July CPI note — the most recent dated private-sector forecast found — projected headline inflation moving toward 3.3% y/y by year-end while core CPI inflation is expected to ease toward 2.4% y/y... core inflation remains contained, though progress is likely to become slower in the final quarter of the year , explicitly not reaching 2.2% — https://www.ey.com/en_us/insights/strategy/macroeconomics/cpi-report - [~2026-05, "152 days ago"] PIIE's inflation-risk analysis took the contrarian upside view, arguing it is more likely that inflation will surprise to the upside—potentially exceeding 4 percent by the end of 2026. The core drivers are the lagged effects of tariffs, an expansion in the fiscal deficit — underscoring that credible forecasters see renewed upside risk to core CPI rather than a drop to 2.2% — https://www.piie.com/blogs/realtime-economics/2026/risk-higher-us-inflation-2026 - [2026-09-05, FXStreet August CPI preview] Ahead of the (ultimately slightly cooler) August print, FXStreet noted the July CPI indicated that tariffs are not the only challenge to the Fed finishing its fight against inflation. Sticky services inflation alongside the rebound in goods prices has stymied the disinflationary trend , framing August's 2.4% as a pause rather than a trend-break — https://www.fxstreet.com/analysis/august-cpi-preview-firmer-trend-to-stick-around-202509051547 - [2026-10-06] Cleveland Fed's quarterly nowcast (cited by colleagues) shows Q4 2026 core CPI running at a 2.56% annualized pace — above the August YoY print of 2.4% — consistent with a stabilization/reversal rather than continued deceleration into year-end — https://www.clevelandfed.org/indicators-and-data/inflation-nowcasting BOTTOM LINE: Every dated, professional forecast found (Philly Fed SPF Aug 14, Cleveland Fed nowcast Oct 6, Street consensus Oct 7, EY-Parthenon, RBC) converges on core CPI staying in the 2.4%–2.8% band through year-end 2026, with tariff pass-through and sticky shelter/OER cited as structural floors; none projects a break below 2.2% in any of the three remaining 2026 releases, and PIIE even argues upside risk is being underpriced. NOT FOUND: No forecaster survey, nowcast, or analyst note (searched through Oct 7, 2026) projecting core CPI YoY at or below 2.2% for September, October, or November 2026; no evidence of data revisions or methodology changes that would mechanically pull core CPI down to that threshold before December 10, 2026.