A reefer unit burns its personal diesel. Anybody who runs refrigerated freight is aware of this, as a result of they’re paying for 2 gas burns on each load: the diesel that strikes the truck down the highway, and the separate diesel that runs the refrigeration unit on the trailer conserving the freight chilly. Each come out of the identical pocket. Solely considered one of them is definitely pushing the truck down the freeway.
Prime Inc., the Springfield, Missouri provider that runs roughly 9,000 vehicles and is among the largest refrigerated carriers within the nation, has determined that the excellence is value greater than $11 million, and it’s now making that case in federal courtroom in opposition to the Inner Income Service.
Supply: United States District Courtroom, Western District of Missouri. The opening web page of Prime’s federal criticism in search of an $11 million refund of gas excise tax. The case, New Prime, Inc. v. United States, was filed June 16, 2026 within the U.S. District Courtroom for the Western District of Missouri.
What Prime Filed
In a criticism filed June 16, 2026, within the U.S. District Courtroom for the Western District of Missouri, Prime petitioned the IRS for a refund of $11,016,644 in federal gas excise tax that it paid between 2018 and 2021. The idea for the declare is particular and, on its face, simple. Prime argues that the diesel used solely to energy the refrigeration items on its trailers, gas that by no means propelled a automobile, constitutes an off-highway, nontaxable enterprise use, and that taxing it as customary freeway gas was improper.
The logic rests on what the federal gas excise tax is definitely for. That tax, presently 24.3 cents per gallon on undyed diesel, exists to fund “freeway infrastructure”. It’s, in impact, a consumer price for the roads. Gasoline that runs a refrigeration unit on a trailer doesn’t use the freeway in that sense. It’s burned to spin a compressor and hold a field chilly, whether or not the truck is rolling down the interstate or parked at a dock in a single day. Prime’s place is that gas doing that work was by no means freeway gas and will by no means have carried the freeway tax. That is the place technically, the purpose may be very legitimate.
This isn’t Prime’s first try to get well the cash. In accordance with the criticism, Prime beforehand filed for refunds masking the durations ending March 31, 2018 by way of December 31, 2020, and the IRS denied all of these claims. Prime then filed an extra declare on September 12, 2025 masking 2021, and as of the criticism, it had obtained neither a refund nor a denial discover for that yr. Having exhausted the executive route with out success, Prime has moved the combat to federal courtroom. Along with the $11 million, it’s in search of litigation prices, lawyer charges, and prejudgment and post-judgment curiosity.
The Half That Really Issues for Small Carriers
Here’s what makes this greater than a narrative a couple of large provider and an enormous quantity. The tax credit score Prime is preventing over isn’t some unique provision out there solely to fleets with 9,000 vehicles and a authorized division. It’s a customary, established federal gas tax credit score, and it’s out there to any enterprise burning taxed gas for a nontaxable off-highway use, together with the owner-operator pulling a single reefer.
The IRS Gasoline Tax Credit score covers the federal excise tax paid on undyed diesel that’s used for a qualifying nontaxable goal. Reefer gas is among the textbook examples. So is gas burned by auxiliary gear that doesn’t propel the truck, turbines/APUs, sure energy take-off (PTO) functions, and related gear that runs off diesel however by no means turns a drive wheel. The credit score refunds the federal excise tax on that gas, which is 24.3 cents per gallon on undyed diesel and 18.3 cents on gasoline. These charges are precisely the federal excise tax paid on the pump.
Run the numbers on what which means for a reefer operation. A refrigeration unit can burn someplace within the vary of a half-gallon to a gallon of diesel per hour relying on the unit, the load, the ambient temperature, and the way onerous it’s working. An operator working a reefer onerous throughout a yr can simply burn properly over a thousand gallons of diesel simply within the refrigeration unit. At 24.3 cents a gallon, the recoverable excise tax on that gas runs into actual tons of of {dollars} per truck per yr, cash that the majority owner-operators merely by no means declare as a result of they didn’t know the reefer gas was separable from the freeway gas for tax functions.
How the Credit score Really Will get Claimed
For a small provider who needs to seize this, the mechanics are value realizing in plain phrases, with the sturdy caveat that this can be a dialog to have with a certified tax skilled earlier than submitting something.
The most typical route is IRS Kind 4136, Credit score for Federal Tax Paid on Fuels, which is filed with the annual revenue tax return. You report the gallons used for the nontaxable goal, multiply by the per-gallon credit score fee, and declare the credit score in opposition to your revenue tax. For operators who would quite not wait till they file their annual return, there are two different paths: Kind 8849, which is used to say a periodic refund through the yr, and Kind 720 Schedule C, for individuals who already file the quarterly federal excise tax return. There’s a threshold value noting on the periodic refund route: you usually want no less than $750 in claimable credit score collected earlier than you possibly can file a periodic Kind 8849 declare, and if you don’t attain that in 1 / 4, it carries ahead. In fact, it would be best to search a tax skilled to make sure you are transferring in the appropriate course.
There may be additionally a more recent wrinkle that issues. Beginning with the 2024 tax yr, the IRS requires claimants to connect a “Assertion Supporting Gasoline Tax Credit score Computation” to the return, documenting how the declare was calculated. That is a part of a broader and really actual IRS crackdown, which leads on to an important level.
Why Documentation Is The whole lot Right here
The gas tax credit score has been one of the vital abused credit on the books, and the IRS is aware of it. The company has assessed greater than $162 million in penalties on improper gas tax credit score claims since 2022, and it imposes a $5,000 civil penalty per return below tax code part 6702(a) for frivolous claims. The IRS cross-checks claims in opposition to EIA gas value knowledge to confirm that the numbers are practical, and a declare that appears disproportionate to the scale of the operation will draw scrutiny.
None of that ought to scare a authentic reefer operator away from a credit score they’re genuinely entitled to. Nevertheless it does imply the credit score lives or dies on documentation. The operator who can cleanly present what number of gallons went into the reefer unit, separate from the gallons that went into the tractor, is in a powerful place. The operator who estimates a quantity with nothing behind it’s asking for hassle.
The cleanest solution to construct that file is to separate the gas buy on the level of sale. Some operators use a devoted gas card or a separate transaction particularly for reefer gas, which creates a clear, automated paper path exhibiting precisely how a lot diesel went into the refrigeration unit. Reefer gas is usually bought individually on the pump anyway, which makes this extra sensible than it sounds. That clear separation is the distinction between a credit score you possibly can defend and a quantity you’re guessing at.
What the Lawsuit Tells Us
Prime’s case is a reminder that even the biggest, most refined carriers are scrutinizing each line of their value construction within the present setting, and that the federal gas excise tax on non-propulsion gas is actual cash value preventing for. The truth that the IRS denied Prime’s earlier administrative claims, and that Prime felt strongly sufficient to take the dispute into federal courtroom, indicators this can be a genuinely contested query on the greenback quantities a big fleet generates. How the courtroom guidelines might make clear the therapy of reefer gas for the complete trade.
However an owner-operator doesn’t want to attend for the result of Prime’s lawsuit to behave on the underlying precept, as a result of the Gasoline Tax Credit score for reefer and auxiliary gas is already established and already claimable by way of the conventional course of. What Prime is litigating is a denied declare at a big scale. What a small provider faces is just whether or not they’re submitting the routine credit score in any respect. Most aren’t.
The takeaway isn’t sophisticated. When you run refrigerated freight, otherwise you burn diesel in auxiliary gear that doesn’t transfer your truck, the federal excise tax on that gas may be very doubtless refundable, and it’s cash you’re entitled to maintain. Monitor the gallons cleanly, hold the documentation hermetic, discuss to a tax skilled who handles trucking, and cease leaving that cash with the IRS. Prime goes to courtroom for its share. Yours is sitting in a type most owner-operators have by no means filed.
The submit Prime Is Suing the IRS for $11 Million Over Gasoline Tax It Paid on Reefer Diesel. The Similar Credit score It Is Combating For Is One Small Carriers Can Declare Too. appeared first on FreightWaves.
