WPI inflation edges higher to 9.9% in August, fuel leads rise
Wholesale Price Index (WPI) inflation rose to approximately 9.9% year-on-year in August 2026, up marginally from about 9.8% in July 2026.
Fuel and power inflation accelerated sharply, driven mainly by rising mineral oil and crude petroleum prices, becoming the largest contributor to the headline increase.
Inflation in manufactured products edged up slightly, while primary articles inflation eased compared to the previous month.
The WPI Food Index recorded a multi-month high annual inflation rate, pushed up by fruits, vegetables, and milk prices.
Official data was released by the Office of the Economic Adviser under the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry.
Wholesale Price Index (WPI): Compilation and Composition
WPI measures the average change in prices of goods at the wholesale (first bulk sale) level, before they reach retail consumers. It is India's principal indicator of producer-level and input-cost inflation, distinct from the Consumer Price Index (CPI), which measures retail prices actually paid by consumers.
The August 2026 uptick to near 9.9% signals building wholesale-level cost pressure — particularly from fuel — that is a leading indicator economists watch for potential pass-through into retail (CPI) inflation in subsequent months.
Fuel and Power Inflation and Crude Oil Price Pass-Through
Fuel and Power is one of WPI's three major sub-groups, capturing prices of coal, mineral oils (including crude petroleum and petroleum products), and electricity. Because India imports roughly 85% of its crude oil requirement, global crude price movements transmit rapidly into this sub-index, making it a key channel through which external shocks (geopolitical disruptions, OPEC+ decisions) affect domestic wholesale inflation.
Key Details
- The Fuel and Power group in the current WPI series (base 2011-12) carries a weight of about 13.2% in the overall index.
- Mineral oils (a component of Fuel and Power) directly track global crude benchmarks (Brent, WTI) adjusted for the rupee-dollar exchange rate and domestic taxation.
- Sharp global crude price swings — driven by supply disruptions in oil-producing regions or OPEC+ production decisions — are transmitted into India's WPI fuel component within the same or following month, given minimal lag in wholesale pricing.
The described acceleration in fuel and power inflation, led by mineral oil and crude petroleum prices, reflects this direct external-to-domestic transmission channel, distinct from more sticky, demand-driven inflation in manufactured goods.
Food Inflation and Its Divergence from Headline WPI
Food inflation within WPI is captured through the Food Index, an aggregation of food articles under Primary Articles and food products under Manufactured Products. Persistent food inflation, driven by perishables like fruits, vegetables, and milk, reflects supply-side factors such as seasonal shortfalls, weather disruptions, and localized supply-chain frictions rather than aggregate demand pressure.
Key Details
- The WPI Food Index carries a combined weight of roughly 24.99% in the current series (food articles plus manufactured food products).
- Perishables like vegetables and fruits are structurally volatile in Indian price indices due to their short shelf life and dependence on seasonal harvests and monsoon performance.
- Persistently high food inflation is a key input the RBI's Monetary Policy Committee (MPC) monitors, since food carries a much larger weight (about 39.06% via CPI-Combined) in the retail (CPI) basket that the RBI is statutorily mandated to target.
The reported multi-month-high food inflation within WPI is a signal that could feed into headline CPI food inflation, which the RBI's inflation-targeting mandate is most sensitive to given food's outsized weight in the consumer basket.
- WPI inflation, August 2026: approximately 9.9% year-on-year (up from ~9.8% in July 2026)
- WPI compiling authority: Office of the Economic Adviser, DPIIT, Ministry of Commerce and Industry
- Current WPI base year: 2011-12=100 (revision to 2022-23 approved in principle, May 2026)
- WPI Food Index weight in current series: approximately 24.99%
- Fuel and Power group weight in current series: approximately 13.2%
- RBI's statutory inflation target (CPI-based, Section 45-ZA, RBI Act 1934): 4%, with a tolerance band of 2% to 6%