India Shifts to Producer Price Index: WPI to be Phased Out in 5 Years
India has taken a monumental step in modernizing its economic monitoring by launching the Producer Price Index (PPI) for goods and services. This strategic move signals the beginning of a five-year transition period during which the long-standing Wholesale Price Index (WPI) will be gradually phased out.
A Strategic Shift Toward Global Standards
The decision to adopt the PPI aligns India with advanced global economies and follows critical recommendations from the International Monetary Fund (IMF). By transitioning away from the WPI, India aims to achieve a more precise measurement of price fluctuations from the perspective of producers.
This shift was prompted by a report from a working group led by former NITI Aayog member Ramesh Chand. The panel highlighted that the PPI—comprising both Output and Services indices—offers a superior framework for National Accounts and GDP compilation. Unlike the WPI, the PPI allows economists to better estimate real value addition and understand how cost changes at the producer level impact the broader economy.
Understanding the New PPI Framework: Input vs. Output
A significant feature of the new system is the distinction between Input PPI and Output PPI. The Ministry of Commerce and Industry noted that this dual approach provides a clearer picture of how inflation experienced by producers on raw materials (inputs) is passed through to the final products (outputs).
For the May 2026 period, the data revealed several key trends:
- All-India Output PPI: Stood at 109.6 in May 2026, up from 108.6 in April.
- Output PPI Inflation: Rose to 9.4% in May, compared to 8.1% in April.
- Manufacturing Input PPI: The experimental trial for the manufacturing sector recorded a value of 104.9 in May 2026.
The Ministry is currently publishing the Input PPI on an experimental basis to refine data quality and gather feedback from industry stakeholders before a full-scale rollout.
Composition and Weightage of the New Indices
The revised base year for both the WPI and PPI is 2022-23, covering a basket of 957 items. The weightage structure of the Output PPI (Goods) differs significantly from the old WPI, reflecting a more modern economic composition:
- Manufactured Items: 69.93% (compared to 63.12% in WPI).
- Agriculture, Forestry, and Fishing: 22.16% (compared to 22.76% in WPI).
- Electricity: 4.49% (compared to 14.11% in WPI).
- Mining and Quarrying: 3.42%.
The rollout for the Service PPI is being implemented in phases. The first phase includes critical sectors such as banking, securities, insurance, pension management, railways, air passenger transport, and telecom. Future phases will expand to cover the remaining services using data from price surveys and the GSTN.
Key Takeaways
- Phased Transition: The Wholesale Price Index (WPI) will be completely discontinued and replaced by the Producer Price Index (PPI) over a five-year period.
- Enhanced Accuracy: The new PPI framework distinguishes between Input and Output prices, providing a better understanding of how raw material costs affect final production prices.
- Modernized Weightage: The new index shifts focus toward manufactured goods (69.93%) and provides a structured path to include the services sector through GSTN data.