India Launches Producer Price Index: A Major Shift in Inflation Tracking

India has officially entered a new era of economic monitoring with the first-ever release of the Producer Price Index (PPI) data for goods and services. This landmark move signals the beginning of a five-year phase-out period for the Wholesale Price Index (WPI), aligning Indian economic metrics with global standards.

Transitioning from WPI to PPI: The Strategic Roadmap

In a move recommended by the International Monetary Fund (IMF) and following a working group report led by former NITI Aayog member Ramesh Chand, the Indian government is transitioning from the WPI to the PPI. Unlike the WPI, which tracks wholesale prices, the PPI offers a more granular view by measuring price changes from the producers' perspective.

This shift is designed to provide a more accurate measure of price movements, making it significantly more suitable for National Accounts and GDP compilation. The transition follows the revision of the base year from 2011-12 to 2022-23, covering a basket of 957 items. The government intends to discontinue the WPI entirely after a five-year period.

Understanding Output vs. Input PPI

A critical component of this new framework is the distinction between Output and Input PPI. The Commerce and Industry Ministry noted that releasing both allows economists to understand how inflation experienced by producers on raw materials (inputs) is passed through to the final products (output).

For the month of May 2026, the All-India Output PPI for all commodities stood at 109.6, up from 108.6 in April 2026. Simultaneously, the All-India trial Input PPI for the manufacturing sector was recorded at 104.9. While the Output PPI is a primary metric, the Input PPI is currently being published on an experimental basis to assess data quality and gather stakeholder feedback.

Comparative Weights and Sectoral Coverage

The new index structure differs significantly from the traditional WPI in its weightage distribution. In the Output PPI (Goods), manufactured items hold the highest weight of 69.93%, followed by agriculture, forestry, and fishing at 22.16%, electricity at 4.49%, and mining and quarrying at 3.42%. This compares to the WPI structure, where manufactured products held 63.12%, fuel and power 14.11%, and primary articles 22.76%.

The rollout is also being implemented in phases for the services sector. The first phase of the Service PPI includes critical sectors such as:

Additional services will be integrated in subsequent phases using data collected via price surveys and the GSTN.

Key Takeaways