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

India has officially commenced the release of the Producer Price Index (PPI) for goods and services, marking a historic shift in how the nation measures inflation. This move signals the beginning of a five-year transition period during which the long-standing Wholesale Price Index (WPI) will be gradually phased out and replaced.

Transitioning from WPI to PPI: A Global Standard

The decision to shift from WPI to 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 sophisticated lens by capturing price changes from the producer's perspective.

Crucially, the new framework distinguishes between "Output PPI" and "Input PPI." This distinction allows policymakers and businesses to understand how price fluctuations in raw materials (inputs) are passed through to the final goods being produced (outputs). This granularity is expected to significantly improve the accuracy of National Accounts and GDP compilation by providing a better estimation of real value addition.

First Data Release and Key Inflation Metrics

In its inaugural release, the Commerce and Industry Ministry provided a snapshot of the economic landscape for May 2026. As wholesale inflation climbed to 9.68% in May (up from 8.26% in April), the Output PPI inflation also saw a notable rise, moving from 8.1% to 9.4% during the same period.

The All-India Output PPI for all commodities stood at 109.6 in May 2026, compared to 108.6 in April. To ensure data integrity, the ministry is also publishing the All-India trial Input PPI for the manufacturing sector, which stood at 104.9 in May, on an experimental basis to gather stakeholder feedback.

Structural Differences and Sectoral Weightage

The new index utilizes a revised base year of 2022-23, covering 957 items. The composition of the Output PPI (Goods) reflects a modern economy, with manufactured items carrying the highest weight of 69.93%. This is followed by agriculture, forestry, and fishing at 22.16%, electricity at 4.49%, and mining and quarrying at 3.42%.

Cela diffère de l'ancienne structure de l'IPG, où les produits manufacturés représentaient un poids de 63,12 %, les carburants et l'énergie comptaient pour 14,11 %, et les produits de base s'élevaient à 22,76 %.

Le déploiement comprendra également un IPP des services. Dans sa première phase, celui-ci couvrira des secteurs critiques, notamment la banque, les transactions de titres, l'assurance, la gestion des fonds de pension, les chemins de fer, le transport aérien de passagers et les services de télécommunications. Les phases futures étendront cette couverture en utilisant les données issues des enquêtes sur les prix et du GSTN.

Points clés

  • Suppression progressive sur cinq ans : L'indice des prix de gros (WPI) sera systématiquement abandonné au cours des cinq prochaines années, l'indice des prix à la production (PPI) devenant l'indicateur principal.
  • Perspectives économiques améliorées : En séparant l'IPP des intrants et celui des produits finis, le gouvernement pourra mieux suivre l'impact des coûts des matières premières sur les prix de la production finale.
  • Méthodologie modernisée : Le nouvel indice utilise l'année 2022-23 comme année de référence et fournit une mesure plus précise pour la compilation du PIB par rapport à l'IPG traditionnel.