The White House is considering regulatory relief that would expand sales of red-dyed diesel, a tax-exempt fuel typically used for farming, as prices surge following supply disruptions linked to the US conflict with Iran, Ukrainian strikes on Russian refineries and declining global inventories.

The White House is considering regulatory relief that would allow broader sales of red-dyed diesel as part of an effort to bring down soaring prices, a move that could allow some buyers to avoid the federal fuel tax, according to two people familiar with the discussions.