Trump signs order to defer federal diesel taxes; relief hinges on Treasury and IRS guidance

President Donald Trump signed an executive order Monday aimed at lowering diesel costs, but the order’s biggest effects still depended on follow-up action from the Treasury Department and the Internal Revenue Service that had not been publicly issued as of Tuesday.

The Oct. 5 order, titled “Emergency Tax Relief on Diesel Fuel,” starts a process that could temporarily ease some federal diesel tax burdens through Dec. 31. It does not, by itself, immediately erase those taxes or fully open the highway market to dyed diesel without further agency action.

The order lays out two main steps. First, it directs the Treasury secretary, within five days, to determine whether relief is authorized under federal tax law, specifically 26 U.S.C. 7508A. If Treasury makes that determination, the order says the department is to defer payment of certain federal diesel taxes incurred from Oct. 5 through Dec. 31.

Second, it directs Treasury within the same five-day window to have the IRS announce that it will not impose penalties under 26 U.S.C. 6715 when dyed diesel is sold for highway use or used on the highway during that period.

“Within 5 days of the date of this order, the Secretary … shall determine whether relief is authorized under 26 U.S.C. 7508A… If the Secretary makes those determinations, the Secretary shall, to the extent authorized by law, defer payment” of the covered diesel taxes, the order says.

Dyed diesel, often called red diesel, is not a different fuel. It is standard diesel marked with dye for enforcement purposes and generally reserved for off-road uses such as farm and construction equipment. Because it is not normally allowed for taxable highway use, it is exempt from the federal on-highway diesel excise tax.

That federal tax is about 24.3 to 24.4 cents per gallon. Under normal IRS rules, improper sale or use of dyed diesel on public highways can trigger a penalty equal to the greater of $1,000 or $10 per gallon involved.

The White House on Tuesday framed the move as immediate consumer relief, issuing a release headlined, “WHAT THEY ARE SAYING: President Trump Delivers Immediate Diesel Relief, Saving Americans Up to $100 Per Fill.” Trump, quoted by the White House from an X post, said: “Tonight, I am 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.”

But as of Oct. 6, no formal Treasury guidance or public IRS announcement carrying out the order’s key implementation steps had been found in a review of agency materials. That left important practical questions unresolved, including exactly which taxes would be deferred, how sellers and truck stops would document qualifying transactions, and when any relief would show up at the pump.

The White House’s claim of savings of up to $100 per fill also depends on scale. The federal diesel tax alone works out to about $48.60 on a 200-gallon fill. Reaching $100 in savings would generally require very large commercial fills, separate state diesel-tax relief, or both. State actions are separate from the federal order.

The order also stops short of permanently canceling tax liability. It tells Treasury to issue guidance on the relief and its conditions, and to explore options, including legislation, to eliminate the obligation to pay the deferred amounts. In other words, the taxes could be postponed without being forgiven unless further action is taken.

That distinction matters beyond pump prices. Federal fuel excise taxes are a major source of revenue for the Highway Trust Fund, which helps finance road and transit spending, so any deferral would reduce near-term receipts unless the money is later collected or Congress wipes out the obligation.

The next key step is not another White House statement but formal Treasury and IRS guidance spelling out whether the relief is legally available, who qualifies and whether diesel buyers will actually see lower prices before the end of the year.