Context
- India’s Wholesale Price Index (WPI) inflation rose to 4% in September 2026, its highest level in 49 months.
- WPI measures changes in the prices of goods at the wholesale level, rather than the prices paid by consumers in shops.
- It is different from the Consumer Price Index (CPI), which measures retail inflation and is used by the RBI for monetary policy.
Understanding Wholesale Price Index (WPI)
- WPI measures changes in the prices of goods when they are sold in bulk, usually by producers or wholesalers.
- It does not directly measure the prices paid by consumers.
- Example: If a manufacturer sells a product to wholesalers at ₹100 and later increases its price to ₹110, the wholesale price has increased by 10%.
- Key Features of WPI
- Released by: Office of the Economic Adviser (OEA), under the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry.
- Base Year: 2022–23.
- Coverage: Includes goods but does not include services.
- Purpose: Tracks changes in wholesale prices and price movements in the goods-producing economy.
- Major Components of WPI and Their Weightage: WPI is divided into three major groups:
| Component | Weightage | Examples |
| Manufactured Products | 63% | Textiles, chemicals, machinery and metals |
| Primary Articles | Around 23% | Food articles, minerals and crude petroleum |
| Fuel and Power | Around 14% | Coal, electricity and mineral oils |
Difference Between WPI and CPI
| Basis | WPI | CPI |
| Full Form | Wholesale Price Index | Consumer Price Index |
| Measures | Price changes at wholesale level | Price changes at retail level |
| Released by | Office of the Economic Adviser | National Statistical Office (NSO) |
| Ministry | Ministry of Commerce and Industry | Ministry of Statistics and Programme Implementation |
| Coverage | Goods only | Goods and services |
| Main purpose | Tracks wholesale price movements | Tracks consumer inflation and purchasing power |
| Food weightage | Relatively lower | Around 36% |
| Highest weightage | Manufactured products | Food and beverages |
| Monetary policy | Not directly targeted by RBI | Headline CPI is used by RBI |
Why is CPI More Important for RBI’s Monetary Policy?
- CPI reflects the prices consumers actually pay for goods and services.
- It helps assess changes in the cost of living and purchasing power.
- Therefore, the RBI uses headline CPI inflation as its target for monetary policy.
- India’s inflation target: 4%, with a tolerance band of ±2% (2%–6%).
| Headline Vs Core Inflation
1. Headline Inflation: Measures the overall rise in prices of all goods and services, including food, fuel and other items. 2. Core Inflation: Measures the rise in prices of goods and services after excluding food and fuel prices, as these are highly volatile. |
Frequently Asked Questions (FAQs)
Q1. What is the Wholesale Price Index (WPI)?
WPI measures changes in the prices of goods sold in bulk by producers or wholesalers. It tracks wholesale-level price movements rather than the prices paid by consumers.
Q2. Who releases WPI in India, and what is its base year?
WPI is released by the Office of the Economic Adviser (OEA), under DPIIT, Ministry of Commerce and Industry. Its current base year is 2022–23.
Q3. What are the three major components of WPI?
WPI comprises manufactured products (63%), primary articles (around 23%), and fuel and power (around 14%), with manufactured products having the highest weightage.
Q4. How is WPI different from the Consumer Price Index (CPI)?
WPI measures price changes of goods at the wholesale level, whereas CPI measures retail price changes of goods and services and reflects consumers’ cost of living.
Q5. Why does the RBI use CPI instead of WPI for monetary policy?
CPI reflects the prices consumers actually pay and helps assess changes in purchasing power and cost of living. Therefore, the RBI uses headline CPI inflation as its monetary policy target.
