A four-page executive order published in the Federal Register on Friday formally sets in motion the deferral of the 24.3 cents-per-gallon federal excise tax on red dye diesel — but it does nothing to resolve the core conflict between federal and state rules that could neutralize the break for trucking.

The EO, signed by President Donald Trump, directs Treasury Secretary Scott Bessent to "use his authority to defer certain diesel fuel tax payment obligations" and to consider waiving penalties that carriers might otherwise incur for running dyed fuel in over-the-road applications. The deferral period, once declared after a five-day review, would run from October 5 through December 31.

What does the order actually change?

Red dye diesel carries its coloring because a dye is blended into the fuel — a marker with no impact on performance. The dye exists so that certain end users, primarily agricultural, can buy the fuel without paying the federal excise taxes, which total 24.3 cents per gallon plus a 0.1 cent-per-gallon fee funding the Leaking Underground Storage Tank Trust Fund.

The EO's language is short on mechanics. After citing unspecified "historic efforts to ensure fuel affordability for our citizens," it declares "it is clear that further temporary relief is necessary." The stated goal is permanence: the order says the Treasury Secretary "shall explore avenues, including legislation, to eliminate the obligation to pay the amounts deferred." If Congress acts, the deferral for the remainder of the year would become a full tax break that never has to be repaid.

Why state rules still matter

The federal deferral does not override state law. States prohibit red dye diesel on their roads, and the wholesale and retail fuel supply chain is built around non-dyed product. Retailers in only rare cases maintain segregated tanks and pipelines dedicated to dyed diesel, which limits how quickly the fuel could reach highway users even where it is legal.

The order acknowledges the gap. It calls on Bessent to "engage with State governments, relevant industry leadership… and relevant labor organizations" to encourage coordination, and instructs him to coordinate with agricultural cooperatives, rural fuel distributors and farm supply organizations "to ensure adequate distribution of dyed diesel for their use in high-demand areas."

Ten states have already moved: Texas, Indiana, Illinois, Nebraska, North Dakota, Ohio, Oklahoma, North Carolina, Arkansas and Alabama have each made concessions in state rules to open their roads to dyed fuel and its lower pump price.

Is the break worth the bookkeeping?

For interstate carriers, probably not yet. Critics of the policy point out that crossing from a waiver state into one without a waiver creates a tax-paying nightmare for trucking companies, and the extra bookkeeping effort may outweigh the savings.

Breakthrough Fuel, in a summary of the proposed change, rated the retail-level impact as "low" and noted: "Highway lanes rarely carry dyed fuel, interstate routes cross non-relief states, and clear diesel pricing is unchanged by the order."

That combination — limited dyed-fuel availability at highway retail, a patchwork of state waivers, and unchanged clear diesel prices — means shippers and carriers should expect little immediate movement in fuel surcharges. The practical beneficiaries in the near term are agricultural users and intra-state operators within the ten waiver states.

The trajectory now hinges on two steps: whether Bessent formally declares the deferral after the five-day review, and whether legislation converting the deferral into a permanent elimination of the 24.3-cent tax can advance before the December 31 cutoff.