Key Details
The Working Group proposes modernisation of India’s price-statistics system, arguing that the existing 2011–12 WPI framework no longer adequately reflects shifts in manufacturing, energy systems, and services-led economic activity. The recommendations combine a revised WPI basket with the phased introduction of a producer-price architecture aligned with international standards.
Reform Area | Key Recommendation / Significance |
|---|---|
Base Year Revision | WPI base proposed to shift from 2011–12 to 2022–23 to better reflect contemporary production and price structures |
Expanded WPI Coverage | Commodity basket proposed to expand from 697 to 957 items, improving representation of manufacturing, agriculture and energy sectors |
New Weighting Logic | Transition from Net Traded Value (NTV) to Value of Output (VOP) to better capture domestic production realities |
Energy and Commodity Reclassification | Fuel and power categories reorganized, with dedicated tracking for solar, wind, hydro, thermal and nuclear energy |
Producer Price Index (PPI) Roadmap | Introduction of Output, Input and Service PPI to measure factory-gate and service-sector price movements |
Services Inflation Measurement | Proposed quarterly PPIs for banking, telecom, insurance, transport and other services, filling a longstanding statistical gap |
Digital Data Systems | Web-enabled reporting and validation systems proposed to improve data quality, consistency and transparency |
Summary
Updating India’s Price Measurement System
The Working Group on Wholesale Price Index (WPI) and Producer Price Index (PPI) revision has submitted its technical report to the Government of India, recommending a major modernization of India’s inflation and producer-price measurement architecture. The report seeks to align national price statistics with structural shifts in production, services, and industrial activity since the current 2011–12 base year was adopted.
At the center of the proposal is a transition to a 2022–23 base year, supported by revised weighting systems, expanded commodity coverage, and improved data collection standards. The proposed framework is intended to strengthen the statistical foundations underlying GDP and Gross Value Added (GVA) estimation while improving India’s alignment with international price-accounting practices.
Rebuilding the WPI Commodity Basket
The report proposes a major expansion and reclassification of the WPI basket to better reflect India’s evolving production economy. Total commodity coverage would rise from 697 to 957 items, with the largest expansion occurring in manufacturing through ASI 2022–23-based selection of products representing the top 80 percent of value of outputwithin industrial categories. The revision also broadens agricultural coverage, reorganizes energy commodities by relocating crude petroleum and natural gas into the Fuel & Power category, and introduces dedicated tracking for newer power sources including solar, wind, hydro, thermal and nuclear energy. Together, these changes aim to improve sectoral representation and reduce classification distortions within the current WPI structure.
Methodological Shift and the Move Toward PPI
The report also proposes a deeper statistical transition beyond basket revision.
The existing Net Traded Value (NTV) weighting system would be replaced by the Value of Output (VOP) method, which better captures actual domestic production patterns and avoids distortions caused by trade-flow mapping.
Other methodological reforms include:
Chain-based elementary indices to accommodate changing product specifications and factory upgrades
Continued use of the Laspeyres weighted arithmetic mean at aggregate levels
Minimum quotation thresholds of 8 prices for industrial sectors and 5 prices for agriculture
Mean imputation and splicing rules to manage missing prices and product replacement
A central recommendation is the phased rollout of a Producer Price Index (PPI) system—long recommended by international statistical bodies—which would measure inflation from the producer or factory-gate perspective.
The proposed architecture includes:
PPI Layer | Purpose |
|---|---|
Output PPI | Tracks producer prices across agriculture, mining, fuel and manufacturing |
Input PPI | Measures intermediate production costs within manufacturing |
Service PPI | Quarterly tracking of services inflation |
The Service PPI introduces dedicated measurement systems for banking, insurance, pension funds, telecom, railways, securities services and air transport, including a proposed Banking Service Producer Price Index (BkSPI).
Importantly, the Working Group argues that a PPI ecosystem would allow India to adopt “double deflation” methods in national accounting. By separately measuring price movements in industrial outputs and production inputs, this approach can improve the accuracy of GDP and Gross Value Added (GVA) estimates during periods of volatile commodity and energy prices.
The Working Group additionally recommends web-enabled reporting systems resembling CIMS-style digital validation frameworks, allowing consistency checks and analytical dashboards during price collection.
What is “Double Deflation” in National Accounts?
Double deflation is a statistical method used to calculate real economic output by separately adjusting both industrial output prices and input costs for inflation. Instead of relying on a single wholesale price index, the method uses different producer-price measures for what firms sell and what they consume during production. This produces more accurate GVA and productivity estimates, particularly during periods of volatile commodity or energy prices.
Policy Relevance
The Working Group’s report signals a significant modernization of India’s statistical infrastructure, moving price measurement beyond legacy wholesale indicators toward a more granular and production-linked system.
Protects GDP and GVA Estimates from Commodity Distortions: A PPI framework with double-deflation capability allows MoSPI to isolate genuine productivity changes from volatile raw-material price shocks.
Strengthens Monetary Policy Signals Through VOP Weighting: Replacing NTV with Value of Output provides the RBI with a clearer picture of producer-level inflation and factory-gate cost pressures.
Improves Contract Pricing and Industrial Cost Escalation: Expanding manufacturing coverage to 803 productscreates more representative benchmarks for infrastructure and industrial contracts.
Bridges India’s Services Inflation Measurement Gap: Quarterly Service PPIs provide new tools to monitor inflation across high-value sectors such as banking, telecom and logistics.
Enhances Agricultural Price Intelligence: Broader crop coverage and revised agricultural tracking improve evidence for diversification strategies and rural income planning.
Follow the Full Update Here: Report of the Working Group on Base Revision of Wholesale Price Index (WPI) from 2011-12 to 2022-23 and Compilation of Producer Price Indices (PPIs) with Base Year 2022-23Base Year 2022-23