Trump signs order deferring federal diesel tax as harvest-season prices hit record highs

President Trump signed an executive order Monday temporarily waiving the federal excise tax on diesel fuel and permitting "dyed" diesel, the untaxed fuel normally reserved for tractors, generators and other off-road equipment, to be used legally in highway trucks and passenger vehicles through the end of the year. The order arrives in the middle of corn and soybean harvest, after months in which diesel prices climbed to their highest levels on record.

The directive instructs the Treasury Department to defer collection of the federal diesel tax and tells the Internal Revenue Service not to penalize drivers caught using untaxed, red-dyed fuel on public roads, a practice that is ordinarily subject to fines starting at $1,000 per violation. It also orders the Agriculture and Transportation departments to help states expand access to dyed diesel and directs the White House's intergovernmental affairs office to encourage states to adopt matching relief.

The numbers behind the order

The relief runs from Oct. 5 through Dec. 31, according to the order and an accompanying fact sheet released by the White House. The federal diesel tax is 24.4 cents a gallon, and the administration says deferring it, combined with states waiving their own dyed-diesel restrictions, could save truckers and farmers "over $100 per refill." The order sets no overall price tag and does not estimate how many gallons of fuel or how many taxpayers would be affected.

The move follows weeks of pressure over fuel costs. The national average price of on-highway diesel reached $6.38 a gallon by Oct. 1, with prices in the Corn Belt approaching $6 a gallon, according to a letter sent to the White House by the American Farm Bureau Federation. NBC News reported that diesel hit an all-time high of $6.52 a gallon on Sept. 22 and that prices have risen more than 70 percent since late February, when the United States and Israel entered a war with Iran that disrupted oil shipping.

How diesel got this expensive

The run-up traces to the monthslong conflict between the United States and Iran, which has repeatedly threatened and at times restricted traffic through the Strait of Hormuz, the narrow waterway through which roughly a fifth of the world's oil and refined fuel normally passes. A ceasefire in the spring briefly calmed markets, but fighting resumed over the summer, and the renewed disruption to Gulf shipping lanes has kept pressure on crude and refined-product prices since. Diesel, which is more exposed to global supply swings than gasoline because it is also used for shipping, construction and industrial equipment worldwide, has risen faster than pump gasoline over the same period.

The price spike has landed during harvest, when farmers cannot simply wait out high prices; combines, grain dryers and trucks hauling crops to market all run on diesel, and the fuel cannot easily be substituted. In the weeks before the federal order, at least eleven states, including Texas, Louisiana, Georgia, Indiana and Nebraska, had already suspended their own penalties for using dyed diesel on highways or eased truck weight limits to reduce the number of hauling trips, according to the Farm Bureau's letter. Those state actions, however, left intact the federal tax and federal penalties that governors cannot waive on their own, which Farm Bureau President Zippy Duvall's letter said was limiting how much relief states could provide by themselves.

Who stands to benefit

The order's immediate beneficiaries are farmers and ranchers mid-harvest, independent and commercial truckers who buy on-highway diesel, and, more broadly, any driver with a diesel vehicle who can find a station selling the dyed fuel. Agricultural cooperatives and rural fuel distributors are expected to play a central role in supplying dyed diesel under guidance the Treasury Department has been directed to issue. Consumers of goods that move by truck could also see modest relief if trucking companies pass along savings, though nothing in the order requires them to do so.

Not everyone is positioned to benefit equally. Petroleum analysts have cautioned that the order does not add a single gallon of diesel to the market, it only changes who pays tax on existing supply. "It's simply diesel with red dye added that's not taxed," Patrick De Haan, head of petroleum analysis at GasBuddy, said of a similar proposal before the order was signed, adding that he did not expect it to affect overall prices. Analysts have separately warned that if Washington pursues a parallel idea under consideration, restricting U.S. diesel exports, refiners could cut production runs in response, a move oil-industry executives have lobbied against.

"I'm going to sign a historic executive order to officially waive the off-road requirement and allow anyone to purchase tax-free red dye diesel for any reason," President Trump said before signing the order.

Reaction, and what happens next

The order is temporary and does not resolve the underlying dispute over how to address fuel costs long-term. In Congress, Sen. Josh Hawley, R-Mo., has pushed a broader Gas Tax Suspension Act that would zero out both the gasoline and diesel taxes for up to 180 days and backfill the Highway Trust Fund from general revenue, an approach some Senate Republicans, including Majority Leader John Thune, have been reluctant to embrace. House Democrats have largely opposed a blanket tax holiday, arguing it would drain highway funding without a guarantee that savings reach drivers, though some, including Rep. Chris Pappas of New Hampshire, have offered competing bills that would replace the lost revenue from the general fund and penalize fuel sellers who do not pass savings through.

Nonpartisan budget analysts have raised similar concerns about Trump's order. The Committee for a Responsible Federal Budget has estimated that suspending federal fuel taxes for several months could cost tens of billions of dollars in lost revenue once debt-service costs are included, while delivering only a fraction of that back to consumers if fuel sellers do not pass the tax relief through to pump prices. The diesel tax normally funds the Highway Trust Fund, which pays for federal road and bridge projects, meaning a prolonged deferral could eventually require Congress to find other money to cover the shortfall.

The Treasury Department is now expected to issue formal guidance spelling out which taxpayers, locations and deadlines are covered by the deferral, and the order directs Treasury to explore legislative options for forgiving the deferred tax entirely rather than simply delaying it. Enforcement of truck safety rules will continue under the Federal Motor Carrier Safety Administration even as the fuel-tax penalties are waived. Unless Congress acts or diesel prices retreat on their own, the relief is due to expire Dec. 31, just as the harvest wraps up and winter heating-oil demand, which draws on the same distillate supplies as diesel, begins to climb.