India Modernises Key Economic Indicators to Strengthen Data Quality
Context
India has undertaken a major overhaul of its statistical framework in recent months, introducing significant improvements in the timeliness, reliability, coverage, and representativeness of key economic indicators. These reforms aim to align official statistics with the evolving structure of the Indian economy and global best practices.
Major Statistical Reforms Introduced
Revamp of National Economic Estimates
The Ministry of Statistics and Programme Implementation (MoSPI) has updated several core macroeconomic indicators, including:
- Gross Domestic Product (GDP)
- Gross Value Added (GVA)
- Industry-wise growth and output estimates
- Contributions from consumption, investment, government spending, and external trade
These indicators are published on both quarterly and annual bases to assess economic performance.
Revised Industrial Activity Index
The Index of Industrial Production (IIP) has also been modernised to better reflect current industrial trends.
It measures performance across sectors such as:
- Manufacturing
- Mining
- Electricity
- Infrastructure industries
- Capital goods
- Consumer goods
The IIP remains an important input for GDP and GVA calculations.
Modernisation of Inflation Tracking
India’s inflation monitoring system has been upgraded through revisions in:
- Consumer Price Index (CPI) – reflects retail-level price movements.
- Wholesale Price Index (WPI) – measures price changes at the wholesale stage.
In addition, a new Producer Price Index (PPI) has been introduced to provide a more accurate assessment of producer-side inflation and is expected to gradually replace WPI in the coming years.
Why Were These Reforms Necessary?
Economic Structure Has Changed Significantly
Several statistical series continued to rely on base years dating back to 2011–12 or 2012. Over time, the contribution of sectors to the economy has shifted considerably, making older datasets less representative.
Consumer Behaviour Has Evolved
Household spending patterns have undergone major changes over the last decade.
- Older indices still included obsolete products.
- Several emerging goods and digital services were missing.
- This reduced the accuracy of inflation and consumption estimates.
Need for Better Policy Inputs
Reliable economic data is essential for:
- Monetary policy decisions by the Reserve Bank of India (RBI)
- Calculation of Dearness Allowance (DA) and Dearness Relief (DR)
- Fiscal planning and budget formulation
- Accurate measurement of real economic growth
International Credibility Concerns
Recent assessments by international institutions highlighted the need for improvements in India’s statistical systems, reinforcing the importance of methodological reforms.
Key Changes in National Accounts Statistics
New Base Year Adopted
The base year for national accounts has been shifted to 2022–23, providing a more contemporary benchmark for economic measurement.
Introduction of the Double Deflation Technique
A major methodological enhancement is the adoption of the double deflation approach.
- Input prices and output prices are adjusted separately.
- Provides a more precise estimate of real GDP growth.
- Initially applied to agriculture and manufacturing sectors.
Improved Treatment of Diversified Enterprises
Earlier, firms operating across multiple sectors were classified under a single dominant industry.
The revised methodology:
- Allocates output across all sectors in which a company operates.
- Produces a more realistic picture of sectoral contributions.
Integration of New Data Sources
The updated series incorporates:
- Goods and Services Tax (GST) data
- Periodic Labour Force Survey (PLFS) information
- Enhanced statistical estimation techniques
This helps reduce inconsistencies and improves overall data accuracy.
Enhancements in Industrial Output Measurement
Updated Reference Year
The IIP base year has been revised to 2022–23, improving relevance and comparability.
Broader Sectoral Inclusion
New activities incorporated into the index include:
- Gas distribution
- Water supply services
- Sewerage operations
- Waste management services
More Detailed Industrial Classification
The revised index now provides deeper insights into:
- Renewable and non-renewable power generation
- Different categories of mineral production
Expanded Product Coverage
The item basket has been significantly enlarged, improving the representation of industrial activity across the economy.
Transformation of Inflation Indices
Consumer Price Index Recast
The CPI base year has been updated to 2024 using findings from the latest Household Consumption Expenditure Survey.
Key improvements include:
- Better representation of current spending patterns
- Increased number of expenditure groups
- Expanded coverage of both goods and services
Newly Included Items
The revised CPI now captures:
- Rural housing rents
- Digital and online media subscriptions
- CNG and PNG fuel consumption
- Updated communication and transport services
Obsolete products have been removed from the basket.
Wholesale Price Index Upgraded
The WPI base year has been revised to 2022–23.
Additional improvements include:
- Wider product coverage
- Refined classification framework
- Better alignment of fuel and energy-related commodities
Launch of Producer Price Index
The newly introduced PPI offers several advantages:
- Tracks both input and output prices faced by producers
- Excludes indirect taxes and transportation costs
- Covers goods as well as services
- Provides a more comprehensive measure of producer inflation
The government intends to gradually transition from WPI to PPI over the next five years.
Conclusion
India’s extensive statistical reforms mark a significant step towards building a modern, transparent, and globally comparable data ecosystem. By updating methodologies, revising base years, expanding coverage, and incorporating new data sources, the country aims to improve economic measurement, strengthen policymaking, and enhance confidence in official statistics both domestically and internationally.
Source : The Hindu