India Launches Producer Price Index: WPI to be Phased Out in Five Years

India has officially entered a new era of inflation tracking with the maiden release of the Producer Price Index (PPI) for goods and services. This strategic shift 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.

A Strategic Transition to Global Standards

The decision to move from WPI to PPI aligns India with the practices of advanced economies and follows specific recommendations from the International Monetary Fund (IMF). By transitioning to the PPI, India aims to gain a more sophisticated understanding of price movements. Unlike the WPI, the new framework provides both Output and Input PPIs, allowing policymakers to track how cost increases in raw materials (inputs) are passed through to the final products (outputs) sold by producers.

This overhaul follows a report by a working group led by former NITI Aayog member Ramesh Chand, which suggested that the PPI offers a more accurate measure of price changes from the producer's perspective. This accuracy is vital for the more precise compilation of National Accounts and GDP estimations.

Decoding the First Set of PPI Data

The Commerce and Industry Ministry released the initial data alongside the May wholesale inflation figures. The All-India Output PPI for all commodities stood at 109.6 in May 2026, an increase from 108.6 in April 2026. Reflecting broader inflationary trends, output PPI inflation rose to 9.4% in May, up from 8.1% in April.

To ensure data integrity, the ministry is also publishing the All-India trial Input PPI for the manufacturing sector on an experimental basis. The trial Input PPI for manufacturing was recorded at 104.9 for May 2026. This experimental phase is designed to gather stakeholder feedback and assess data quality before a full-scale rollout.

Structural Differences and Sectoral Weightage

The new PPI framework utilizes a revised base year of 2022-23, covering 957 items. There are significant differences in how the indices are weighted compared to the old WPI system. In the Output PPI (Goods), manufactured items carry a heavy weight of 69.93%, followed by agriculture, forestry, and fishing at 22.16%, electricity at 4.49%, and mining and quarrying at 3.42%.

En contraste, la distribución del WPI fue diferente, con productos manufacturados en un 63,12 %, combustible y energía en un 14,11 % y artículos primarios en un 22,76 %.

El PPI de servicios también se está introduciendo por fases. La primera fase abarca sectores críticos que incluyen la banca, las transacciones de valores, los seguros, la gestión de fondos de pensiones, los ferrocarriles, el transporte de pasajeros por aire y los servicios de telecomunicaciones. Las fases futuras se ampliarán para cubrir los servicios restantes utilizando datos de encuestas de precios y la GSTN (Goods and Services Tax Network).

Conclusiones clave

  • Eliminación gradual en cinco años: El Índice de Precios al por Mayor (WPI) se discontinuará gradualmente durante los próximos cinco años a medida que el Índice de Precios al Productor (PPI) se convierta en el indicador principal.
  • Mayor granularidad: La introducción de los PPI de insumos (Input) y de productos (Output) permite un mejor seguimiento de cómo los costes de las materias primas afectan a los precios finales de producción.
  • Mayor precisión económica: Esta medida sigue las recomendaciones del FMI para mejorar la precisión de las Cuentas Nacionales y la compilación del PIB, al proporcionar una visión de la inflación centrada en el productor.