The Consumer Price Index excluding volatile food and energy prices. Core CPI provides a cleaner view of underlying inflation trends and is closely watched by central banks when setting monetary policy.
What Core CPI Measures
Core CPI removes food and energy prices from the standard Consumer Price Index (CPI) calculation. These categories are excluded because they are subject to large swings driven by weather events, geopolitical tensions, and seasonal patterns that can mask the underlying inflation trend. Core CPI is released as part of the same monthly report as headline CPI.
Why Central Banks Prefer Core CPI
The Federal Reserve and other central banks give significant weight to core inflation measures because they better reflect demand-driven price pressures in the economy. A temporary spike in oil prices may inflate headline CPI, but if core CPI remains stable, the central bank is less likely to change course on interest rates.
Core CPI is particularly important during periods of commodity price volatility, when headline and core readings can diverge significantly. Central banks want to avoid overreacting to transitory supply-driven price shocks.
Trading Core CPI
Forex traders often react more strongly to core CPI surprises than headline CPI surprises. A higher-than-expected core reading is bullish for the U.S. Dollar (USD) because it suggests persistent inflation that requires tighter monetary policy.
Related Terms
Consumer Price Index (CPI)
A measure of the average change in prices paid by consumers for a basket of goods and services over time. CPI is the primary gauge of inflation used by central banks to guide monetary policy decisions.
PCE Price Index
The Personal Consumption Expenditures Price Index, the Federal Reserve's preferred inflation measure. PCE covers a broader range of spending than CPI and adjusts for changes in consumer behavior.
Inflation
A sustained increase in the general price level of goods and services, reducing purchasing power. Central banks target specific inflation rates (typically 2%) and adjust monetary policy to achieve that target.
Producer Price Index (PPI)
A measure of the average change in selling prices received by domestic producers for their output. PPI tracks inflation at the wholesale level and is considered a leading indicator of consumer inflation.
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