Headline and Core Inflation

Headline consumer price inflation is the rate of increase in prices across the entire consumer basket represented by India's Consumer Price Index. Core inflation removes food and fuel components from that basket to provide an analytical measure of more persistent, broad-based price pressures.

Measurement and coverage

India's headline rate is generally the year-on-year percentage change in the all-India CPI Combined, compiled monthly by the National Statistical Office with 2012=100 as the base. It covers food, fuel, housing, clothing and footwear, and miscellaneous goods and services.

• Core inflation is commonly measured as CPI excluding food and fuel, because these components often experience sharp supply-driven price movements.
• Core inflation is an analytical measure rather than a separate consumer price index; precise exclusions may differ across analytical exercises.

What each measure reveals

Headline inflation captures the price change actually faced across the representative consumption basket. Core inflation seeks to identify the underlying inflation trend that may persist after short-lived food or fuel shocks fade.

• A poor harvest or an energy-price shock can raise headline inflation sharply without producing an equal rise in core inflation.
• Sustained increases in rents, services, clothing or manufactured consumer goods can keep core inflation elevated.
• Core inflation is usually smoother, but excluding food and fuel does not make it immune to taxes, exchange-rate changes or other supply shocks.

Policy significance

India's flexible inflation-targeting framework is anchored to headline CPI inflation, not core inflation. The RBI nevertheless examines core inflation to judge persistence, demand conditions and the likely transmission of price pressures.

• Headline inflation is more relevant for household purchasing power because food and fuel form essential parts of consumption.
• Core inflation can guide policy diagnosis, but it cannot replace headline inflation in assessing welfare effects, especially when food inflation remains prolonged.

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