The WPI will be discontinued over the next five years, and a more granular PPI will take its place. The move, announced by the DPIIT, aims to provide a realistic picture of inflationary trends.
Key Developments
- On 15 June 2026, DPIIT will publish a revised WPI series with a new base year 2022‑23, replacing the 2011‑12 base.
- A three‑component PPI will be released simultaneously: Output PPI, Trial Input PPI, and Services PPI.
- Services PPI will initially cover seven services – Banking, Securities Transaction, Insurance, Management of Pension Funds, Railways, Air (Passenger), and Telecom.
- The transition period of five years will allow contracts that currently use price escalation clauses linked to WPI to shift to PPI.
Important Facts
The revised WPI basket expands from 697 to 957 items. New energy sources such as solar, wind, and nuclear electricity are added, while crude petroleum and natural gas move to the fuel‑and‑power group for better alignment.
Both WPI and Output PPI will be compiled monthly, with provisional data for May 2026 released on 15 June 2026. The Trial Input PPI (manufacturing sector) will start on an experimental basis from March 2026, and Services PPI will be published quarterly beginning Q4 2025‑26.
The shift follows recommendations of the IMF and mirrors practices in the US, China, Japan, Germany, France and other G‑20 economies.
Exam Relevance
Understanding the difference between WPI and PPI is essential for GS‑3 (Economy) questions on inflation measurement, price indices, and statistical reforms. The role of Principal Economic Adviser highlights how technical expertise shapes policy. The involvement of DPIIT underscores inter‑ministerial coordination, a typical GS‑2 (Polity) theme.
Way Forward
Stakeholders must prepare for the shift by revising contracts to reference PPI instead of WPI. The government will issue a circular within the next few weeks to guide users. Continuous monitoring of the monthly and quarterly releases will help analysts gauge inflation dynamics more accurately, aiding policy formulation and exam preparation.