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Will US core CPI exceed 3.0% YoY in any Q3 2026 release?
The Condition
Fed cuts rates by at least 50bp total by September 2026 FOMC (to ≤3.25%)
Our Ensemble Estimates
Given Fed cuts ≥50bp by Sep: Will US core CPI exceed 3.0% YoY in any Q3 2026 release?
Given Fed disappoints on cuts: Will US core CPI exceed 3.0% YoY in any Q3 2026 release?
Causal Effect
Fed rate cuts worth ~7pp to core CPI exceeding 3.0% — modest causal effect driven by dollar-weakening import price pass-through, partially offset by transmission lag timing
Why This Matters
Tests the self-limiting feedback loop identified in the meta-synthesis: Fed cuts weaken the dollar, which raises import prices with a 6-12 month lag, potentially pushing US inflation back above 3%. The analysis finds non-petroleum import prices up only 0.9% despite a 7.6% dollar decline, but historical pass-through coefficients (30-50% over 12 months) suggest the inflationary impulse arrives in Q2-Q3 2026. If the Fed delivers ≥50bp of additional cuts, further dollar weakening would amplify this import price channel, creating the partially self-defeating feedback loop that constrains further easing.
Resolution Criteria
BLS Consumer Price Index Summary shows core CPI (All Items Less Food and Energy) YoY change at or above 3.0% in the July, August, or September 2026 data release
Source Analysis
Non-petroleum import price index above 110 confirms dollar weakness transmitting to US consumer prices