Food CPI vs Energy CPI
Food CPI (FRED CPIUFDSL) and Energy CPI (FRED CPIENGSL) are the two non-core components of CPI excluded from core inflation measures due to volatility. March 2026 BLS release (April 10, 2026): food index unchanged month-over-month, +2.7 percent year-over-year (stable trajectory).
Also known as: CPI: Food (food CPI, food inflation) · CPI: Energy (energy CPI)
Why This Comparison Matters
Food CPI (FRED CPIUFDSL) and Energy CPI (FRED CPIENGSL) are the two non-core components of CPI excluded from core inflation measures due to volatility. March 2026 BLS release (April 10, 2026): food index unchanged month-over-month, +2.7 percent year-over-year (stable trajectory). Energy index +10.9 percent month-over-month (led by gasoline +21.2 percent MoM accounting for nearly three-quarters of monthly all-items increase). Energy +12.5 percent year-over-year. Gasoline prices +18.9 percent in March 2026 vs March 2025. Food away from home +0.2 percent MoM; food at home -0.2 percent MoM. The pair captures the two most politically-sensitive inflation components. April 2026 configuration shows extreme energy surge (Iran war oil shock) with stable food.
The April 2026 Configuration
March 2026 CPI release (April 10, 2026): food index unchanged MoM, +2.7 percent YoY. Energy index +10.9 percent MoM, +12.5 percent YoY. Gasoline +21.2 percent MoM (accounting for ~75 percent of monthly all-items increase); +18.9 percent YoY.
Food decomposition: food away from home +0.2 percent MoM; food at home -0.2 percent MoM. Stable food prices reflect post-2022 normalization. Food at home subcomponent showing modest deflation MoM.
Energy decomposition: gasoline +21.2 percent MoM (Iran war supply disruption); energy services (utilities) modest decline MoM. Iran war (February 2026 onset) catalyzed gasoline spike with WTI rising from $73 to $95.85.
The combined April 2026 reading: extreme energy surge with stable food. Energy CPI exceeds food CPI by 9.8pp at YoY level. Configuration is most extreme food-energy divergence since 2008 oil spike. Watch food CPI for transmission lag from energy: typically 3-6 months. If oil sustains above $90 through Q2 2026, food CPI may rise from current 2.7 percent to 3.5-4.0 percent by Q3 2026 reflecting transportation cost passthrough.
Why Food and Energy Are Excluded from Core
Food and energy excluded from core CPI due to volatility. Energy CPI volatility (year-over-year change) typically 15-30 percent annualized. Food CPI volatility 2-5 percent annualized. Compare to core CPI volatility 0.5-1.5 percent annualized.
The excluded components dominate consumer experience but represent only 21 percent of total CPI weight (food 13.5 percent + energy 7 percent). Core CPI captures broader 79 percent of CPI weight with smoother behavior.
For Fed policy, core inflation is preferred metric because: (1) core is less affected by supply shocks (oil disruptions); (2) core captures persistent price pressures more clearly; (3) core is more responsive to monetary policy.
For consumer experience, headline inflation (including food and energy) drives sentiment. Michigan Consumer Sentiment (April 2026 49.8, all-time low) reflects gasoline spike directly. Inflation expectations (Michigan year-ahead 4.7 percent) heavily influenced by gas prices.
The practical implication: food and energy CPI matter politically and for consumer behavior even if Fed focuses on core. April 2026 +12.5 percent energy YoY drives Michigan sentiment crash + inflation expectation surge despite core CPI moderate at +2.6 percent.
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Frequently Asked Questions
What are food CPI and energy CPI?+
Food CPI (FRED CPIUFDSL) and Energy CPI (FRED CPIENGSL) are the two non-core components of CPI excluded from core inflation due to volatility. March 2026 BLS release (April 10 2026): food index unchanged MoM, +2.7% YoY (stable trajectory); energy index +10.9% MoM (gasoline +21.2% MoM accounting for ~75% of monthly all-items increase); energy +12.5% YoY; gasoline prices +18.9% YoY (March 2026 vs March 2025); food away from home +0.2% MoM; food at home -0.2% MoM. Food + energy = 21% of CPI weight (food 13.5% + energy 7%). Headline CPI 3.3% YoY; core CPI 2.6% YoY (April 2026 readings).
Why are food and energy excluded from core?+
Volatility. Energy CPI volatility (YoY change) typically 15-30% annualized; food 2-5%; core CPI 0.5-1.5%. Food + energy 21% of CPI weight (food 13.5%, energy 7%). Core captures broader 79% with smoother behavior. Fed policy uses core because: (1) less affected by supply shocks (oil disruptions); (2) captures persistent pressures; (3) more responsive to monetary policy. For consumer experience, headline inflation (incl food/energy) drives sentiment. Michigan Consumer Sentiment 49.8 April 2026 (all-time low) reflects gasoline spike directly. Inflation expectations Michigan year-ahead 4.7% heavily influenced by gas prices. Food/energy matter politically + consumer behavior even if Fed focuses on core.
What is the 2026 Iran war energy shock?+
February 2026 Iran war catalyzed energy price surge. WTI rose $73 (January 2026) to $95.85 (April 2026, +30%). Energy CPI components affected: gasoline +21.2% MoM March (~75% of monthly all-items rise); fuel oil similar; natural gas less affected (US production cushioned); electricity minimal direct impact (5-year average lag). Energy CPI passthrough lags: transportation services 30-90 days; food at home 60-180 days for transportation costs; food away from home 90-180 days for restaurant menu adjustments; goods CPI 60-120 days for shipping cost passthrough. April 2026 surge has not yet transmitted to broader CPI. Watch May-September 2026 CPI releases.
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