WPI Base Year Revised to 2022-23

The government approved revision of the Wholesale Price Index base year from 2011-12 to 2022-23.

The Office of Economic Adviser under DPIIT will release the revised WPI series with base year 2022-23 on 15 June 2026. The new series expands the number of items from 697 to 957 and includes renewable energy sources such as solar and wind under the electricity group. The government will also introduce Output Producer Price Index, Trial Input Producer Price Index and Service Producer Price Index for selected services. The change is important because WPI is widely used for inflation tracking, price escalation clauses and economic policy assessment.