Base Year of Wholesale Price Index Revised from 2011–12 to 2022–23

New Delhi ( Raghwendra Pratap Singh) : The revision of the Base Year of Wholesale Price Index (WPI) from 2011-12 to 2022-23 and compilation of Producer Price Indices (PPIs) has been approved by the competent authority in its meeting held on 25.05.2026.

Earlier, the recommended compilation methodology was approved by the Technical Advisory Committee (TAC) on Statistics of Price and Cost of Living (SPCL). Subsequently, the methodology was also presented before the National Statistical Commission (NSC).

The Office of Economic Adviser, DPIIT will accordingly release the revised series of WPI with base year 2022-23 on 15.06.2026 at 12:00 noon, which would replace the existing series of WPI with base year 2011-12. In addition, the Office would also release new series of Output Producer Price Index (OPPI), Trial Input Producer Price Index (IPPI), and Service Producer Price Index (Service PPI) of seven services, viz., Banking, Securities Transaction, Insurance, Management of Pension Funds, Railways, Air (Passenger), and Telecom with base year 2022-23.

The WPI and Output PPI are being compiled on monthly basis and will be available for the month of May 2026 (Provisional) alongwith the back series from April 2023 to April 2026 (37 months) on 15.06.2026. The monthly Trial Input PPI (only for Manufacturing Sector) will be published on an experimental basis from March 2026 onwards. This would enable the Department to examine the data quality and also receive feedback of stakeholders and users. Service PPI, compiled on quarterly basis, will be released for the Q4 of 2025-26 (Provisional) along with the back series from Q1 of 2023-24 to Q3 of 2025-26.