Divergence Between India's Wholesale and Retail Inflation

The divergence between wholesale and retail inflation in India has become pronounced as of April 2026, primarily due to external factors such as the West Asia conflict.

Inflation Rates

• Wholesale Price Index (WPI)-based Inflation: Increased to 8.3% in April 2026 from 3.9% in March.
• Consumer Price Index (CPI)-based Inflation: Remained relatively stable at 3.5% in April 2026.

Causes of Divergence

• Index Composition: The WPI is primarily composed of manufactured items and acts as an economy's first responder to global commodity shocks, whereas the CPI includes service items.
• West Asia Conflict: Significant factor contributing to the sharp increase in WPI due to its impact on global markets.

Volatility and Impact

• From 2017 to 2026, the WPI's volatility, as measured by standard deviation, was three times higher than that of the CPI.
• Specific commodity shocks include a massive increase in crude petroleum prices (88.1%) and aviation turbine fuel prices (142%) in April.

This divergence underscores the differing impacts of global economic events on various components of the Indian economy, as reflected in the two distinct inflation indices.