India WPI inflation hits 8.3% in April 2026 on fuel shock

Wholesale inflation jumps, retail inflation stays muted

India’s wholesale price inflation (WPI) surged to 8.3% year-on-year in April 2026, according to data released on Thursday. The print marked a sharp acceleration from 3.88% in March and 2.26% in February, highlighting how fast producer-level costs have risen since the conflict in West Asia pushed global energy prices higher. The divergence with retail inflation was stark. CPI inflation inched up to 3.48% in April from 3.4% in March, even as wholesale prices showed a far larger shock.

This gap matters because WPI tends to capture commodity and input-cost pressures earlier, while CPI reflects what households actually pay. With retail fuel prices largely held steady since the start of the conflict, the rising wholesale energy bill suggests that the cost of shielding consumers is building up elsewhere in the system.

A record jump between March and April

The April number also stood out for its pace. The increase of about 4.4 percentage points between March and April was described as the biggest rise between two consecutive monthly WPI inflation readings in the current series. On an index basis, the overall WPI rose to 167.0 in April from 160.8 in March, a month-on-month increase of 3.86%.

The month-on-month jump indicates that the shock was not only visible versus last year’s base, but also in the immediate, sequential movement of wholesale prices.

Fuel and power becomes the dominant driver

The sharpest move came from the Fuel and Power group, where inflation surged to 24.71% in April from 1.05% in March. On a month-on-month basis, the fuel and power group rose 18.22% in April compared with March, reflecting a sudden escalation in energy costs.

Within the group, mineral oils were a key contributor, while electricity prices fell 2.53% month-on-month, partially offsetting the surge from petroleum-linked items. The fuel and power index increased to 181.7 in April from 153.7 in March.

Crude petroleum, natural gas and mineral oils explain most of the spike

Two petroleum-linked components have an outsized influence on the latest WPI move:

• Crude oil and natural gas in the primary products category, with a weight of 2.4%
• Mineral oil in the fuel and power category, with a weight of 7.9%

Together, these sub-categories make up just above 10% of the WPI basket, yet the data indicates they accounted for almost all of the increase in headline WPI inflation.

Inflation in crude petroleum and natural gas rose to 67.18% in April. A separate breakdown showed crude petroleum alone at 88.06% year-on-year, underlining how directly global crude moves were feeding into domestic wholesale costs. Mineral oil inflation was also elevated, with one reading citing a 39.5% increase.

What WPI looks like without the oil shock

One way to isolate the impact of the energy surge is to strip out the crude and mineral oil categories. On that basis, wholesale inflation would have been 3.1% in February, 3.1% in March, and 4.2% in April.

The comparison shows that the headline April print is not primarily about a broad, uniform rise across all goods. Instead, it reflects an energy-led shock that is large enough to lift the overall index sharply, even while other components move more gradually.

Food and manufactured goods show a smaller but visible rise

Beyond fuel, the WPI data pointed to incremental pressure in other parts of the basket:

• The WPI Food Index rose to 2.31% in April from 1.85% in March
• Manufactured products inflation increased to 4.62% in April from 3.39% in March

Manufactured products carry the largest weight in WPI at 64.23%, making the April rise important for tracking how input costs may be passing through. Official data also noted that prices rose for 21 of the 22 product groups within manufactured products, with one group recording a decline.

CPI remains contained, but the gap is the main signal

Retail inflation stayed relatively low in April despite the wholesale surge. CPI inflation moved to 3.48% year-on-year, while core CPI inflation was unchanged at 3.7%. CPI inflation for electricity, gas and other fuels was reported at 1.71% in April, reflecting the limited pass-through of global energy prices to households so far.

Food inflation in CPI stood at 4.2% in April, with sharp declines in select items such as potatoes (-23.69%) and onions (-17.67%), which helped keep the overall consumer basket in check even as fuel-related pressures rose upstream.

Why petrol and diesel prices are now in focus

Analysts linked the WPI-CPI divergence to the losses borne by government-owned oil marketing companies while retail fuel prices remain unchanged. One view in the data set suggested that a ₹5 per litre hike in both petrol and diesel could be imminent in May, given elevated crude prices.

That expectation matters for the inflation outlook. The same commentary revised the FY27 (2026-27) CPI inflation forecast to 4.5% from 4.0% previously, alongside the RBI’s projection of 4.6%.

Market impact and what to watch next

The immediate takeaway from April’s WPI print is that cost pressures at the producer level have intensified quickly, led by energy. Manufactured products inflation also picked up, suggesting that some input-cost pass-through may already be occurring within the supply chain.

Looking ahead, the key variable is whether retail fuel prices remain frozen or adjust. A retail price hike would narrow the gap between WPI and CPI, shifting part of the burden from oil marketers and the supply chain to end consumers.

Key numbers at a glance

Conclusion

April’s 8.3% WPI inflation reading shows how strongly the West Asia-linked energy shock is hitting India’s producer prices, even as CPI inflation remains at 3.48% due to limited retail fuel pass-through so far. The next key developments to track are any changes in petrol and diesel prices in May, and updated inflation projections, including expectations that WPI inflation may average around 7.8% in FY27 under a base-case scenario.