India's wholesale inflation surged for the eighth consecutive month to 9.7% in May, up from 8.3% in April, according to the newly released wholesale price index (WPI) series with an updated 2022-23 base year. The Department for Promotion of Industry and Internal Trade (DPIIT) also released the maiden producer price index (PPI), which estimated inflation at 9.4% in May, driven largely by mining and quarrying (19%) and manufactured products (11.3%).
New WPI Series and PPI Debut
The new WPI series, with base year 2022-23, has increased the coverage of items to 957 from 697. New sources of energy, such as solar and wind, along with nuclear power, have been added under the electricity group. The DPIIT also introduced the PPI covering output and input manufacturing prices and prices of seven services: banking, securities transaction, insurance, management of pension funds, railways, air passengers, and telecom. According to the new series, wholesale inflation stood at 0.4% in FY26.
Sectoral Breakdown
Wholesale prices rose across key sectors, as detailed in the table below.
| Indicator | April (%) | May (%) |
|---|---|---|
| WPI Inflation | 8.3 | 9.7 |
| Crude Petroleum & Natural Gas | 56 | 61 |
| Mineral Oils | — | 50 |
| Manufactured Products | 6.7 | 7.5 |
| Food Index | 3.1 | 4.5 |
| PPI (Manufactured Products) | — | 11.3 |
Prices of crude petroleum and natural gas accelerated 61% in May, reflecting the impact of supply chain disruptions caused by the prolonged conflict in West Asia. Mineral oils surged 50% during the month. Factory gate prices for manufactured products rose 7.5% in May from 6.7% in April, led by acceleration in industries like food products, textiles, leather, chemicals, electrical equipment, and basic metals. The weightage for manufactured products in the new series has slightly fallen to 63.1%. Wholesale food prices also climbed, with the food index rising to 4.5% in May from 3.1% in April.
Expert Commentary
"If prices do come down sharply as has been seen today, there can be moderation in WPI inflation for sure on this account," said Madan Sabnavis, chief economist at Bank of Baroda, regarding crude oil price volatility.
Implications for Corporate Strategy and Investors
For C-suite executives and investors, the persistent rise in wholesale inflation signals sustained input cost pressures. The 61% jump in crude petroleum and natural gas prices directly impacts energy-intensive sectors such as chemicals, metals, and transportation. The acceleration in manufactured product prices (7.5% in May) suggests that companies may face squeezed margins unless they pass on costs to consumers. The debut of the PPI provides a more comprehensive measure of producer prices, including services, which can help analysts better gauge inflation dynamics across the value chain. With the new WPI series showing FY26 wholesale inflation at just 0.4%, the revised base year recalibrates historical comparisons, making year-on-year analysis more relevant.
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