Vishleshan for Regulatory Exams 7th October 2025: The Zero-Price Problem: How PDS Handouts Skew Our CPI

Staying updated on economic and regulatory issues is non-negotiable for exams like RBI, SEBI, or NABARD. Every topic matters. Every update can turn into a question. In today’s Vishleshan, we focus on ”The Zero-Price Problem: How PDS Handouts Skew Our CPI” This issue is timely. Its relevance is growing. And its impact is deeply linked with policy and regulation. Understanding it now will not just help in exams but also sharpen your perspective.

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The Zero-Price Problem: How PDS Handouts Skew Our CPI

Context: How do you measure the price of zero? This is the statistical problem India faces with PDS items in its Consumer Price Index. This piece examines the debate on how to account for freebies without distorting our main inflation gauge.

Link to the Article: Mint

The article discusses a recent proposal by India’s Ministry of Statistics to change how free or heavily subsidised items distributed through the Public Distribution System (PDS) are accounted for in the Consumer Price Index (CPI). This is a critical issue because the CPI is the primary measure of retail inflation and a key input for the RBI’s monetary policy, government welfare schemes, and wage revisions. The core problem is how to treat an item when its price becomes zero. The article supports the idea of including PDS items but advocates aligning with global best practices by restricting the CPI’s scope to monetary transactions only for the upcoming new CPI series, which will be based on the latest household expenditure data.

An Overview of the Consumer Price Index (CPI):

The Consumer Price Index (CPI) is a measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care. It is calculated by taking price changes for each item in the predetermined basket of goods and averaging them. The CPI is one of the most widely used statistics for identifying periods of inflation or deflation.

Variants of CPI in India:

India compiles several CPIs to cater to different segments of the population.

• CPI for Industrial Workers (CPI-IW): Tracks inflation for households of industrial workers. It is compiled by the Labour Bureau and is used for determining Dearness Allowance (DA) for government employees and industrial sector workers.
• CPI for Agricultural Labourers (CPI-AL): Tracks inflation for agricultural labour households. Also compiled by the Labour Bureau, it is used for revising minimum wages for agricultural labour.
• CPI for Rural Labourers (CPI-RL): Tracks inflation for rural labour households. Compiled by the Labour Bureau.
• CPI (Rural/Urban/Combined): This is the headline inflation measure. It is compiled by the National Statistical Office (NSO), Ministry of Statistics and Programme Implementation.
  • CPI-Urban: Tracks inflation for urban households.
  • CPI-Rural: Tracks inflation for rural households.
  • CPI-Combined (All India): This gives a nationwide picture by combining CPI-Urban and CPI-Rural. This is the index that the RBI uses for its inflation targeting.

Weightage and Composition of CPI-Combined:

The CPI basket is created based on the consumption patterns identified in the Household Consumer Expenditure Survey (HCES). The current CPI series uses the 2011-12 HCES data as its base. The weightage of major groups in the CPI-Combined index is a crucial aspect:

As standard data show, the major groups have the following approximate weights:

• Food and Beverages: 45.86% (This high weightage is why food price fluctuations have a major impact on India’s headline inflation).
• Miscellaneous (health, education, transport, etc.): 28.32%
• Housing: 10.07%
• Fuel and Light: 6.84%
• Clothing and Footwear: 6.53%
• Pan, tobacco and intoxicants: 2.38%

S. No.	Major Groups Under CPI	Sub-Groups	Weights (in %)
			Rural	Urban	Combined
1	Food and Beverages	12 sub-items	54.18	36.29	45.86
2	Pan, Tobacco and Intoxicants	No sub-items	3.26	1.36	2.38
3	Clothing and Footwear	2 sub-items	7.36	5.57	6.53
4	Housing	No sub-items	0.00	21.67	10.07
5	Fuel and Light	No sub-items	7.94	5.58	6.84
6	Miscellaneous	6 sub-items	27.26	29.53	28.32
1+2+3+4+5+6	CPI	Total	100	100	100
	Consumer Food Price Index (CFPI)		47.25	29.62	39.06

A key fact is the significant difference in the weightage of food between rural and urban baskets. In the CPI-Rural basket, food has a weight of 54.18%, while in the CPI-Urban basket, it is 36.29%.

Why is Tracking the CPI So Important?

The CPI is a vital economic indicator for several reasons:

• RBI’s Inflation Anchor: In 2015, based on the recommendations of the Urjit Patel Committee, the Reserve Bank of India (RBI) formally adopted the CPI-Combined as its key measure of inflation for the purpose of monetary policy. The RBI’s Monetary Policy Committee (MPC) is mandated to keep inflation within a target band of 4% (+/- 2%), i.e., between 2% and 6%. The repo rate decisions are primarily driven by the CPI inflation trajectory.
• Economic Growth Measurement: CPI numbers are used as a “deflator” to adjust the nominal GDP to arrive at the Real GDP, which is the true measure of economic growth.
• Policy and Welfare Interventions: The government uses CPI data to design and adjust welfare schemes and to understand the impact of price rise on different segments of the population.
• Wage and Pension Indexation: As mentioned, variants of the CPI are used to revise wages, pensions, and social security payments to adjust for the cost of living.

The PDS Inclusion Issue:

The core issue is how to mathematically account for items given for free or at a very low price through the Public Distribution System (PDS), especially under schemes like the Pradhan Mantri Garib Kalyan Anna Yojana (PMGKAY), which provides free foodgrains to a vast population (75% rural, 50% urban).

The statistical problem arises when the price of an item in the CPI basket, which is tracked every month, suddenly becomes zero. Standard index compilation methods struggle with zero prices, as they can lead to mathematical anomalies and distort the final inflation figure.

How will it Impact the CPI?

• The Problem: Should an item given for free be included in the CPI basket at all, since households don’t spend any money on it? Or should its price be recorded as zero?
• Potential Impact: If the price of PDS foodgrains (which have a significant weight in the ‘Food’ basket) is taken as zero, it would artificially pull down the overall CPI inflation number. This could present a misleading picture of the actual price pressures faced by households for other goods and services they purchase from the open market.
• The IMF’s View: As the article notes, the IMF manual suggests that for monetary policy purposes, the CPI should ideally be restricted to “monetary transactions only.” This means if a household doesn’t pay for an item, it shouldn’t be part of the price index.

Decoding the Article: An Analysis

The Ministry of Statistics is undertaking this exercise to “update item weights, revise the consumption basket and incorporate methodological improvements.” This is a standard, periodic process to ensure the CPI remains relevant. The current effort is particularly significant as it will shift the base year from 2011-12 to the more recent HCES 2023-24 data.

The Heart of the Matter: The ‘Weight’ Problem

The article correctly identifies the two critical elements of the CPI: the basket of items and the ‘weight’ assigned to each. The core issue with PDS is its scale. Since a large portion of the population gets free foodgrains, their actual expenditure on these items is zero. This poses a challenge for the upcoming CPI series based on the HCES 2023-24 data.

The Recommended Solution:

The author puts forward a clear and logical recommendation:

• Don’t Tinker with the Current Series: Making methodological changes to an ongoing CPI series is statistically unsound. Any changes should be implemented with the new series.
• Follow Global Best Practices for the New Series: For the new CPI based on HCES 2023-24, India should align with the IMF’s guidance and restrict the CPI’s scope to monetary transactions. This means the value of free PDS items would not be directly factored into the price index compilation, thus avoiding distortions.

The Long-Term Perspective

The article provides an insightful long-term view on why this issue might become less significant over time:

• Engel’s Law: As a country’s income rises, the proportion of income spent on food decreases. This is a well-established economic principle.
• Diminishing Weight of Food: Consequently, the weight of food in the CPI basket (currently a high 46%) is bound to fall in the new series and will continue to do so in the future. As the weight of foodgrains within the food basket shrinks, the distorting impact of PDS handouts on the overall index will naturally reduce.

In conclusion, the article argues for a pragmatic and statistically robust approach. While acknowledging the importance of the PDS, it recommends that for the specific purpose of measuring monetary inflation, the CPI should stick to tracking actual transactions where money changes hands. This will ensure that the RBI and other policymakers get a clear and undistorted picture of price reality in the economy.