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:

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:

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