Consider the following statements: 1. The weightage of food in Consumer Price Index (CPI) is higher than that in Wholesale Price Index (WPI). 2. The WPI does not capture changes in the prices of services, which CPI does. 3. Reserve Bank of India has now adopted WPI as its key measure of inflation and to decide on changing the key policy rates. Which of the statements given above is/are correct?
Contents12
- A1 and 2 only
- B2 only
- C3 only
- D1, 2 and 3
Show answer
Answer: (A) 1 and 2 only
Statement 1 (Food weightage higher in CPI than WPI) — CORRECT:
In CPI (Consumer Price Index), food has close to 50% weightage because consumers spend a large portion of their income on food.
In WPI (Wholesale Price Index), manufacturing gets the highest weightage (64.23%), and food's weightage is much lower.
Statement 2 (WPI doesn't capture service prices) — CORRECT:
WPI only tracks prices of GOODS (primary articles, fuel, and manufactured goods) traded at the wholesale level.
Services cannot be bought at wholesale, so WPI doesn't include them.
CPI, on the other hand, covers both goods AND services (200 items total).
Statement 3 (RBI uses WPI for monetary policy) — NOT CORRECT:
Based on the Urjit Patel Committee's recommendation (accepted in 2014), RBI uses CPI-based inflation for monetary policy, NOT WPI.
The reasons:
- CPI shows the actual impact on common people
- WPI misses services
- Using CPI is international best practice
Answer: A (1 and 2 only).
Key Takeaway:
CPI = food-heavy (50%) + includes services + used by RBI for monetary policy.
WPI = manufacturing-heavy (64%) + goods only (no services) + NOT used for monetary policy.
RBI shifted from WPI to CPI in 2014.
CPI has around 50% weightage for food items while WPI gives only around 24% weightage to food, since CPI measures what consumers actually buy and WPI measures wholesale trade where manufacturing dominates.
RBI officially shifted from WPI to CPI as the anchor for monetary policy in 2014 following the Urjit Patel Committee recommendations, making CPI the key inflation measure for interest rate decisions.
Consumer Price Index (CPI)
Indian Economy Consumer Price Index CPI
Consumer Price Index (CPI): Structure, Weightage & UPSC Facts
CPI measures retail price inflation — what consumers actually pay
Food weightage is ~50% in CPI basket
Covers both goods and services (200 items total)
RBI uses CPI for monetary policy decisions since 2014
CPI tracks the cost of living for an average household by measuring price changes in a basket of goods and services that consumers regularly buy. Unlike wholesale indices, CPI reflects what people actually experience at the retail level.
CPI Basket Composition
Category | Weightage (%) | What it includes |
|---|---|---|
Food & Beverages | ~50% | Cereals, pulses, milk, meat, vegetables, fruits |
Housing | ~10% | Rent, maintenance, water charges |
Miscellaneous | ~28% | Transport, communication, education, health, recreation |
Clothing & Footwear | ~6% | Garments, footwear, textiles |
Fuel & Light | ~6% | Electricity, cooking gas, kerosene, firewood |
Why RBI Uses CPI
CPI shows actual impact on households — what matters for consumption decisions
Includes services prices which form a large part of modern spending
International best practice — most central banks worldwide use consumer price inflation
Better predictor of demand-side inflation pressures in the economy
Trap: Don't confuse CPI-IW (Industrial Workers) with CPI — RBI uses the broader CPI for policy
Trap: Statement 1 tests exact weightage knowledge — food is ~50% in CPI, much higher than WPI
Trap: CPI covers 200 items including services — don't think it's only goods like WPI
Wholesale Price Index (WPI)
Indian Economy Wholesale Price Index WPI
Wholesale Price Index (WPI): Structure & Key Differences from CPI
WPI measures wholesale/producer price inflation — what businesses pay
Manufacturing has highest weightage (64.23%) in WPI
Covers only goods, NO services — major limitation
NOT used by RBI for monetary policy since 2014
WPI tracks price changes at the wholesale/producer level before goods reach consumers. It reflects supply-side cost pressures but misses the complete inflation picture that households experience.
WPI Basket Structure
Category | Weightage (%) | What it includes |
|---|---|---|
Manufactured Products | 64.23% | Textiles, chemicals, metals, machinery, food products |
Primary Articles | 22.62% | Food articles, non-food articles, minerals |
Fuel & Power | 13.15% | Coal, petroleum products, electricity |
WPI Limitations
No services coverage — services form 60%+ of India's GDP but are missing from WPI
Producer focus — doesn't show what consumers actually pay at retail level
Supply-side bias — reflects cost-push inflation better than demand-pull inflation
Outdated for modern economy — services dominate but aren't captured
Trap: Statement 2 tests this exactly — WPI has NO services, only goods
Trap: Don't think WPI is food-heavy like CPI — manufacturing dominates at 64%
Trap: Statement 3 reverses the truth — RBI stopped using WPI in 2014, now uses CPI
CPI vs WPI: Key Differences
Indian Economy
CPI vs WPI: Complete Comparison for UPSC
CPI = Consumer focus with food-heavy basket; WPI = Producer focus with manufacturing-heavy basket
CPI includes services, WPI excludes services — this is the key structural difference
RBI switched from WPI to CPI in 2014 based on Urjit Patel Committee recommendations
CPI vs WPI Detailed Comparison
Aspect | CPI (Consumer Price Index) | WPI (Wholesale Price Index) |
|---|---|---|
Focus | Retail prices — what consumers pay | Wholesale prices — what producers get |
Food Weightage | ~50% (high) | ~24% (in primary articles) |
Top Category | Food & Beverages (~50%) | Manufacturing (64.23%) |
Services Coverage | Included (transport, education, health) | Excluded (goods only) |
Total Items | 200 items | 697 commodities |
RBI Usage | Used for monetary policy (since 2014) | Not used for monetary policy |
Inflation Type | Demand-side inflation | Supply-side inflation |
International Practice | Standard worldwide | Rare for monetary policy |
Why RBI Switched
The Urjit Patel Committee (2014) recommended CPI over WPI because:
Consumer relevance: CPI shows actual household impact
Service inclusion: Modern economy is 60%+ services
Global alignment: Most central banks use consumer price inflation
Better policy transmission: CPI responds more to interest rate changes
Trap: Food weightage reversal — CPI has higher food weightage (~50%) than WPI (~24%)
Trap: Services coverage — only CPI includes services, WPI is goods-only
Trap: RBI policy usage — RBI uses CPI now, NOT WPI (switched in 2014)
Trap: Don't confuse items vs commodities — CPI tracks 200 items, WPI tracks 697 commodities
RBI's Inflation Targeting Framework
Indian Economy Reserve Bank of India key policy rates
RBI's Inflation Targeting: CPI-Based Framework Since 2014
RBI uses CPI inflation as the primary target for monetary policy decisions
Inflation target: 4% CPI with tolerance band of ±2% (2-6% range)
Repo rate is the key policy rate adjusted to meet inflation target
Framework adopted in 2016 based on Urjit Patel Committee 2014 recommendations
India adopted flexible inflation targeting where RBI primarily focuses on keeping CPI inflation around 4%. This framework replaced the earlier multiple-indicator approach where both WPI and CPI were considered.
How RBI Uses CPI for Policy
%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
s1["`**Monitor CPI Data**
RBI tracks monthly CPI inflation trends and forecasts`"]
s2["`**Compare with Target**
Check if CPI inflation is within 2-6% tolerance band around 4% target`"]
s3["`**Monetary Policy Committee Decision**
6-member MPC votes on repo rate changes based on CPI outlook`"]
s4["`**Policy Rate Adjustment**
Raise repo rate if CPI > 6%, cut if CPI < 2% persistently`"]
s5["`**Transmission to Economy**
Banks adjust lending rates, affecting consumption and investment`"]
s1 --> s2
s2 --> s3
s3 --> s4
s4 --> s5Why CPI Over WPI for Policy
Household impact: CPI directly affects consumer purchasing power and expectations
Forward-looking: Consumer inflation expectations influence wage bargaining and spending
Services inclusion: Modern monetary policy must account for service price inflation
Global standard: Aligns India with international central banking practices
Trap: Statement 3 claims RBI uses WPI — completely wrong, RBI uses CPI since 2014
Trap: Don't confuse the target (4% CPI) with the tolerance band (2-6%)
Trap: Urjit Patel Committee recommended the switch, but framework was formally adopted in 2016