India Launches Producer Price Index; WPI to be Phased Out in Five Years
In a landmark shift for India’s economic monitoring, the government has released its first-ever Producer Price Index (PPI) data for goods and services. This strategic move marks the beginning of a five-year transition period to phase out the long-standing Wholesale Price Index (WPI) in favor of a more comprehensive global standard.
Transitioning from WPI to PPI: A Global Alignment
The decision to replace the Wholesale Price Index (WPI) with the Producer Price Index (PPI) aligns India with the practices of advanced economies and follows specific recommendations from the International Monetary Fund (IMF). While the WPI has been a staple for measuring wholesale inflation, the PPI offers a more granular view of price movements from the producer's perspective.
The Commerce and Industry Ministry has confirmed that the WPI will be discontinued gradually over the next five years. This transition follows a report by a working group led by former NITI Aayog member Ramesh Chand, which argued that PPI is better suited for National Accounts and GDP compilation. Unlike the WPI, the PPI includes both Output and Input indicators, allowing economists to track how price changes in raw materials are passed through to final products.
Analyzing the First Set of PPI Data
The initial data release provides a snapshot of the inflationary landscape. For May 2026, the All-India Output PPI for all commodities stood at 109.6, up from 108.6 in April 2026. This mirrors the trend seen in wholesale inflation, which climbed to 9.68% in May from 8.26% in April.
The government is also publishing an "Input PPI" on an experimental basis to assess data quality. In the manufacturing sector, the trial Input PPI stood at 104.9 for May 2026. By monitoring both input and output prices, the ministry aims to provide a clearer picture of industrial cost pressures and margin fluctuations.
Structural Differences and Sectoral Coverage
The new PPI framework uses a revised base year of 2022-23 and covers 957 items. There are significant differences in how weightages are assigned compared to the old WPI system:
- Output PPI (Goods): Manufactured items hold the highest weight at 69.93%, followed by agriculture, forestry, and fishing at 22.16%, electricity at 4.49%, and mining/quarrying at 3.42%.
- WPI Comparison: For context, the old WPI assigned 63.12% to manufactured products, 14.11% to fuel and power, and 22.76% to primary articles.
The rollout will also include a Service PPI. In its first phase, this will cover essential sectors including banking, securities, insurance, pension fund management, railways, air passenger transport, and telecom. Future phases will expand to include more services using data from price surveys and the GSTN (Goods and Services Tax Network).
Key Takeaways
- Phased Replacement: The Wholesale Price Index (WPI) will be completely phased out over the next five years to be replaced by the more robust Producer Price Index (PPI).
- Enhanced Economic Insight: The inclusion of both Input and Output PPIs will allow for a better understanding of how raw material costs impact final product pricing.
- Global Standardisation: This move brings India in line with IMF recommendations and advanced economies, improving the accuracy of GDP and National Accounts estimations.