Understanding Inflation: How Rising Prices Are Measured and Why They Matter
- ▸Inflation is the general rise in the price level of an economy over time, measured most commonly through a Consumer Price Index (CPI) that tracks the cost of a fixed basket of goods and services.
- ▸Economists distinguish demand-pull inflation (too much money chasing too few goods) from cost-push inflation (rising input costs) and built-in inflation (wage-price spirals) — each calls for a different policy response.
- ▸Most central banks, including the RBI, now target inflation directly — India's Monetary Policy Committee targets 4% CPI inflation within a 2-6% tolerance band — because both runaway inflation and deflation carry real economic costs.
Inflation is the rate at which the general price level for goods and services rises over time, eroding how much a fixed amount of money can buy. When people say "prices went up 6% this year," they usually mean inflation, measured by a Consumer Price Index (CPI), rose 6% compared to a year earlier.
Statistical agencies build a CPI by tracking the cost of a fixed "basket" of goods and services — food, housing, fuel, clothing, healthcare, transport — that a typical household buys, then comparing that cost month over month or year over year. A rising CPI means the basket costs more; a falling one (deflation) means it costs less.
A small, steady amount of inflation is generally seen as healthy — most central banks target roughly 2-4% a year. Both extremes are damaging: high inflation erodes savings and creates uncertainty, while deflation can cause consumers to delay spending and businesses to cut wages, both of which can drag an economy into a downward spiral.
India formally adopted flexible inflation targeting (FIT) in 2016 through an amendment to the RBI Act, establishing a six-member Monetary Policy Committee — three RBI officials and three government-appointed external members — with a mandate to keep CPI-Combined inflation at 4%, within a tolerance band of 2% to 6%. If inflation breaches the band for three consecutive quarters, the RBI is statutorily required to explain the failure to the government, its reasons, and the remedial timeline. India's CPI basket, rebased to 2012=100 by MOSPI, gives food and beverages the largest weight of any major economy's CPI (roughly 46%), which is why food-price shocks — a poor monsoon, an onion price spike — move India's headline inflation far more than they would in the US or Europe.
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EconoLens Research Desk. (2026, July 13). Understanding Inflation: How Rising Prices Are Measured and Why They Matter. EconoLens. https://econolens.co.in/news/study-understanding-inflation-explained
The EconoLens Research Desk reviews academic papers in economics and econometrics, translating cutting-edge research into accessible analysis. Full credit is given to original authors in every review.