Reefer Diesel Tax Refund: $11M IRS Claim Explained

The $11 Million Question: Can Truckers Get Reefer Diesel Taxes Back?

A major trucking company has filed a claim with the IRS seeking an $11 million refund on federal excise taxes paid for diesel used to power refrigeration units (reefers) on trailers. The case could set a precedent affecting thousands of carriers and owner-operators who run temperature-controlled freight.

Why Reefer Diesel Taxes Are Under Scrutiny

Under current law, diesel used in a truck's drive engine is subject to federal excise taxes (24.3 cents per gallon for highway use). But diesel burned in auxiliary power units (APUs) or reefer engines—which don't propel the vehicle on public roads—is technically exempt. The IRS has historically allowed refunds for off-highway use, but the process is cumbersome, and many carriers don't bother filing.

Prime Inc., one of the largest refrigerated carriers in the U.S., is now pushing for a systematic refund. According to court documents, Prime estimates it paid $11 million in taxes on reefer fuel over several years and is asking the IRS to return that money.

What This Means for Drivers and Carriers

For company drivers, this case doesn't directly affect take-home pay—but it could lower operating costs for carriers, potentially leading to better pay or equipment upgrades. For owner-operators running reefers, the implications are more direct: if the IRS grants the refund, individual drivers could file for their own tax rebates.

As we discussed in our earlier post on Reefer Diesel Tax Refund: What It Means for Truckers, the key is documentation. Carriers must track reefer fuel separately from drive fuel and file Form 8849 (Claim for Refund of Excise Taxes).

The Bigger Picture: Fuel Costs and Tax Policy

Diesel prices have remained volatile, with the national average hovering around $3.85 per gallon in mid-2026. Every penny counts. If the IRS refunds $11 million to Prime, it could encourage other carriers to pursue similar claims, potentially saving the industry hundreds of millions annually.

This case also comes amid broader tax debates. Several states are raising fuel taxes to fund infrastructure, as we covered in Your Next Fill-Up Could Cost More as States Raise Fuel Taxes. A federal refund on reefer fuel would partially offset those increases.

How to File for Reefer Diesel Tax Refund

If you're an owner-operator or small fleet running reefers, here's a step-by-step guide:

1. Track fuel separately – Use separate tanks or meters for reefer fuel. If you fuel from the same tank, estimate based on runtime and engine specs.
2. Document hours – Log reefer run hours and fuel consumption. The IRS requires reasonable records.
3. File Form 8849 – Submit quarterly or annually. Attach Schedule 1 for non-highway use.
4. Claim within 3 years – You can go back up to 3 years from the filing date.

What Industry Experts Say

"This is a no-brainer for carriers with large reefer fleets," says tax attorney Mark Henderson. "The law is clear: fuel used off-road is exempt. But the IRS makes it hard to claim. Prime's lawsuit could force the IRS to streamline the process."

The Bottom Line

The $11 million claim by Prime Inc. shines a spotlight on a little-known tax break that could save the trucking industry millions. Whether you're a fleet owner or a solo driver, understanding reefer diesel tax rules can put money back in your pocket.

FAQ

Q: Can individual owner-operators claim reefer diesel tax refunds?

A: Yes. Any taxpayer who paid federal excise tax on diesel used for non-highway purposes (including reefer units) can file Form 8849. You need to document fuel usage and submit within 3 years.

Q: How much can I expect to get back?

A: The refund is 24.3 cents per gallon of reefer diesel. A typical reefer unit burns 0.5–1.0 gallons per hour. If you run 2,000 hours per year, that's $243–$486 annually per unit.

Q: Does this apply to APUs as well?

A: Yes. Diesel used in APUs is also exempt from highway taxes. The same filing process applies.

Take Action

Whether you're a driver looking for better pay or a carrier aiming to cut costs, understanding tax rules is key. If you're a CDL driver seeking a job with a carrier that values efficiency and transparency, apply for a CDL job today. For carriers, see our carrier pricing to learn how LMDR can help you find qualified drivers faster.