Context
Retail inflation, measured by the Consumer Price Index (CPI), rose to a 16-month high of 3.9% in May, driven by a surge in food prices (particularly cereals). Published by the Ministry of Statistics and Programme Implementation (MoSPI), this brings the headline inflation just shy of the Reserve Bank of India’s (RBI) median target of 4%.
I. Core Concepts of Price Fluctuation
- Inflation: A sustained increase in the general price level of goods and services, leading to a gradual loss of purchasing power.
- Deflation: The exact opposite of inflation; a general decline in prices resulting in increased purchasing power.
- Core Inflation: Calculated by excluding highly volatile components, specifically food, fuel, and electricity prices, from headline inflation.
II. Types of Inflation (Based on Rate)
- Creeping (Mild/Low): Gradual price rise (< 3% annually). Considered manageable and healthy for economic stimulation.
- Walking (Trotting): Moderate pace (3% to 10% annually). Can lead to economic overheating if left unchecked.
- Galloping (Hopping/Running): Rapid price increase (10% to 50% annually). Severely disrupts macroeconomic stability.
- Hyperinflation: Extreme and uncontrollable surge (> 50% monthly), leading to the collapse of the currency’s value.
III. Types of Inflation (Based on Cause)
- Demand-Pull: Occurs when excess money supply causes aggregate demand to outpace the economy’s production capacity (“too much money chasing too few goods”).
- Cost-Push: Driven by an increase in input costs (e.g., raw materials, labour) which producers pass on to consumers.
- Built-in (Wage-Price Spiral): Driven by adaptive expectations; workers demand higher wages to counter expected inflation, prompting businesses to raise prices further.
- Structural Inflation: Caused by systemic economic bottlenecks, rigid supply chains, or monopolistic practices.
IV. Key Inflation Measuring Indices
| Feature | Wholesale Price Index (WPI) | Consumer Price Index (CPI) |
| Measures | Price changes in the wholesale market (goods traded between businesses). | Cost of a typical basket of goods and services consumed by retail buyers. |
| Coverage | Excludes services. | Includes services (housing, education, etc.). |
| Publishing Agency | Office of Economic Adviser (DPIIT, Ministry of Commerce & Industry). | Central Statistics Office (CSO), MoSPI. |
| Base Year | 2022-23 | 2024 |
- Producer Price Index (PPI): Measures price changes from the perspective of the producer/manufacturer, capturing shifts in input costs before they hit retail.
- GDP Deflator: The most comprehensive measure of inflation. It covers all domestically produced goods and services.
Advantage: It does not rely on a fixed base year or a static basket of goods like the CPI or WPI.
V. Inflation Targeting & Mitigation Framework
Monetary Policy (RBI)
- Inflation Target: The Monetary Policy Committee (MPC) is mandated to maintain retail inflation at 4% with a tolerance band of +/- 2% (i.e., 2% to 6%).
- Tools: Adjusting benchmark policy rates (Repo Rate), Open Market Operations (selling government securities to absorb excess liquidity), and qualitative controls (e.g., raising loan margins for specific commodities).
Fiscal & Administrative Policy (Government)
- Fiscal Restraint: Cutting public expenditure and adjusting direct or indirect taxes to cool down aggregate demand.
- Supply-Side Interventions: Releasing buffer stocks, restricting exports, or subsidizing essential commodities (food, fuel) to stabilize immediate price shocks.
With respect to the measurement of inflation in India, consider the following statements:
I. The Wholesale Price Index (WPI) comprehensively tracks price changes for both goods and services traded in the wholesale market.
II. The GDP Deflator measures price level changes across the entire economy without relying on a static basket of goods.
III. Core inflation is determined by excluding highly volatile components such as food, fuel, and electricity prices from headline inflation.
Which of the statements given above are correct?
(A) Only I and II
(B) Only II and III
(C) Only I and III
(D) I, II and III
Answer: B
Explanation:
Statement I is incorrect: The Wholesale Price Index (WPI) measures price changes strictly in the wholesale market for goods traded between businesses and excludes services from its calculation.
Statement II is correct: The GDP Deflator is the most comprehensive measure of inflation as it covers all domestically produced goods and services, calculating price level changes without relying on a fixed base year or a static basket of goods.
Statement III is correct: Core inflation provides a stable measure of underlying inflation trends by deliberately excluding highly volatile components, specifically food, fuel, and electricity prices, from the overall headline inflation figures.