Key Highlights
- Base year of WPI revised from 2011-12 to 2022-23.
- Revised WPI and new Producer Price Indices to be released on June 15, 2026.
- Number of commodities covered increased from 697 to 957 items.
- Solar, wind, and nuclear energy added to the electricity basket.
- Crude petroleum and natural gas shifted to the Fuel & Power category.
- Weight calculation methodology changed from Net Traded Value to Gross Value of Output (GVO).
- New chain-based methodology adopted for index computation.
- Missing price data will now use Targeted Mean Imputation instead of carry-forward estimates.
- New indices include OPPI, IPPI, and Service PPI.
- Service PPI initially covers 7 major service sectors.
- Existing WPI to continue for five years before being phased out.
- Move aligns India’s inflation framework with IMF recommendations and global standards.
New Delhi: The government has approved the revision of the Wholesale Price Index (WPI) base year from 2011-12 to 2022-23, marking a major overhaul in India’s inflation measurement framework. The revised WPI series, along with new Producer Price Indices (PPIs), will be released on June 15, 2026, by the Office of Economic Adviser under the Department for Promotion of Industry and Internal Trade (DPIIT).
The new series aims to improve the accuracy of price measurement by expanding item coverage, incorporating renewable energy sources, adopting improved weighting and computation methodologies, and aligning India’s inflation statistics with global best practices.
As part of the transition, the government will introduce Output Producer Price Index (OPPI), Input Producer Price Index (IPPI), and Service Producer Price Index (Service PPI) covering key sectors such as banking, insurance, telecom, railways, aviation, securities transactions, and pension fund management.
The existing WPI series will continue alongside PPIs for the next five years to allow industries and stakeholders sufficient time to transition to the new producer-focused inflation indicators.
