President Donald Trump signed an executive order on October 5, 2026, aimed at lowering diesel costs by temporarily expanding access to red-dyed diesel for highway use.
Truck drivers and owner-operators have watched diesel prices climb sharply in 2026. According to NBC News, U.S. diesel prices rose by more than 70% after the Iran war began on February 28. The national average price of diesel was about $6.32 per gallon on October 6, after hitting approximately $6.53 per gallon on September 22.
Trump’s red dye diesel policy is designed to reduce some of that pressure by temporarily allowing highway users to access diesel that normally receives different tax treatment.
But there is an important catch: the fuel is not necessarily permanently “tax-free.”
Here is what truckers need to know:
What Did Trump’s Red Dye Diesel Executive Order Change?
Under normal rules, red dyed diesel is generally intended for nontaxable uses such as farming and off-highway business equipment. Using dyed diesel in a highway vehicle can normally trigger federal taxes and significant penalties. IRS guidance says the penalty for knowingly using dyed diesel improperly can be the greater of $1,000 or $10 per gallon, in addition to the tax itself.
Trump’s October 5 executive order changes that temporarily.
The order directs Treasury to determine whether it can defer federal diesel excise-tax payments associated with highway use of dyed diesel between October 5 and December 31, 2026. It also directs the IRS not to impose the normal dyed-fuel penalties for qualifying highway use during that period, subject to the guidance Treasury is required to issue.
The White House describes the policy as temporarily opening dyed diesel to highway use while deferring the federal diesel tax through the end of the year without interest or penalties.
Is Red Dye Diesel Really Tax-Free Now?
The normal federal tax on highway diesel is 24.4 cents per gallon. Under the executive order, that tax is supposed to be deferred during the temporary relief period rather than collected immediately. Treasury has also been ordered to explore ways to completely eliminate the obligation to pay those deferred taxes, including through legislation.
So when people call this tax-free diesel, they are describing the immediate effect at the pump. As the order currently stands, though, truckers should not assume that every deferred federal tax dollar has already been permanently forgiven.
State taxes are another issue. The federal government can encourage states to provide similar relief, but each state controls its own fuel-tax policy.
That means the actual savings can be very different depending on where you fuel.
What Is Red Dye Diesel?
Red Diesel vs. Regular Diesel: What’s the Difference?
For most drivers, the biggest difference between red diesel and regular highway diesel is how the fuel is taxed and where it is legally allowed to be used.
| Red Dye Diesel | Regular Diesel | |
|---|---|---|
| Red dye added | Yes | No |
| Traditional use | Farms, construction and off-road equipment | Highway vehicles |
| Federal highway diesel tax | No | Yes |
| Legal in a highway truck | Generally No | Yes |
Truckers shouldn’t think of red diesel as some cheap, low-quality version of highway diesel. For this story, the important differences are the red dye, its traditional off-road designation, and its tax treatment.
How Much Cheaper Is Red Dye Diesel?
This is where the executive order could make a noticeable difference for truckers.
The federal government currently collects 24.4 cents per gallon in taxes and fees on highway diesel. As of January 2026, state diesel taxes and fees averaged another 35.5 cents per gallon, although the actual amount varies considerably by state.
That means taxes can account for roughly 60 cents on an average gallon when federal and average state charges are combined.
But the new federal policy does not automatically remove every state tax.
How Much Could a Trucker Save on a 250-Gallon Fill?
- Your state’s tax policy
- Whether the station passes the full tax difference through to customers
- The local price of dyed diesel
- Supply and distribution costs
- How the federal tax deferral is ultimately handled
Why Are Diesel Prices So High Right Now?
Diesel prices have been hit particularly hard by tight global supplies and disruptions to refined fuel markets.
AAA‘s national average for diesel stood at $6.3151 per gallon on October 6, compared with $3.6790 one year earlier. The September 22 record of $6.5276 per gallon was the highest national average AAA has recorded.
Recent supply pressure has been linked to several factors, including disruptions connected to the Iran conflict, damage and restrictions affecting Russian refining and diesel exports, and limited refining capacity around the world. Reuters reported that the global fuel market remains tight enough that the G7 is working on a release of emergency diesel and oil stocks.
This is also why simply changing the tax doesn’t solve the entire diesel problem
Can Truckers Use Red Diesel Now?
The federal government has moved to temporarily allow dyed diesel to be used on highways, but truckers should wait for the final Treasury and IRS guidance before assuming the rule applies to every truck, purchase, and location.
Trump’s executive order directs the IRS to suspend the normal federal dyed-diesel penalties for qualifying highway use between October 5 and December 31, 2026, while Treasury determines and explains how the related federal tax deferral will work. State laws and taxes can still apply separately.
However, Individual state laws and International Fuel Tax Agreement (IFTA) requirements remain in effect because the executive order does not automatically override them. Consequently, truckers must verify whether their specific operating states have also waived local motor fuel taxes or altered registration rules for dyed diesel.
That means there are 2 questions a trucker should check before filling a highway truck with red diesel:
- What is your state’s current rule?
- Is the fuel seller actually authorized and prepared to sell dyed diesel for highway use?
Historically, using red diesel on the highway without a qualifying exemption could lead to penalties, so this is an area where truckers shouldn’t rely on what somebody at a truck stop or on social media says the rule is.
Where Can Truckers Buy Red Diesel?
This could be the frustrating part for truckers.
Changing the federal rules does not instantly put a red-diesel pump at every Pilot, Love’s, TA, or local gas station.
Red diesel has traditionally been sold through places serving customers who already had legitimate off-road uses for it, such as:
- Agricultural and farm supply businesses
- Commercial fuel distributors
- Bulk-fuel suppliers
- Construction and heavy-equipment fuel suppliers
- Some fuel stations in agricultural areas
A truck stop that has always served highway trucks may only have tanks and pumps for normal taxed highway diesel.
Because this policy is brand new and Treasury still has implementation work to do, calling the fuel supplier before driving there is probably smarter than assuming an online listing is current.
Could Opening Red Diesel to Truckers Cause a Supply Problem?
This is one of the more interesting parts of the policy.
Allowing highway trucks to buy dyed diesel does not suddenly create millions of new gallons of diesel. It opens another part of the existing diesel distribution system to a much larger group of customers.
Red diesel has historically been distributed heavily through agricultural suppliers, rural fuel distributors, commercial fuel companies, and businesses serving construction and off-road equipment.
Now imagine a large number of highway truckers suddenly trying to buy from that same supply. Demand for dyed diesel could increase quickly.
That doesn’t automatically mean there will be shortages, but the executive order itself shows the administration is thinking about the risk. It specifically directs the Department of Agriculture to work with agricultural cooperatives, rural fuel distributors, farm supply organizations, and other agricultural groups to maintain adequate dyed-diesel distribution in high-demand areas.
