WPI inflation hits double digits in April at 10.49%; crude prices harden Top Searches WPI inflation hits double digits in April at 10.49%; crude prices harden PTI / May 17, 2021, 12:46 IST FacebookTwitterLinkedinEMail Also, a low base of April last year contributed to the spike in inflation in April 2021. The WPI inflation was 7.39 per cent in March 2021, and (-) 1.57 per cent in April 2020. This is the fourth straight month of uptick seen in the wholesale price index (WPI)-based inflation. "In April, 2021 (over April, 2020), the annual rate of inflation (YoY), based on monthly WPI, stood at 10.49 per cent. "The annual rate of inflation in April 2021, is high primarily because of rise in prices of crude petroleum, mineral oils viz petrol, diesel etc, and manufactured products as compared to the corresponding month of the previous year," the commerce and industry ministry said.