Prime Inc. Sues US Government for $11 Million in Diesel Excise Tax Refunds

Prime Inc., one of the largest refrigerated trucking carriers in the United States, has filed a lawsuit against the federal government seeking a refund of more than $11 million in excise taxes. The complaint argues the Internal Revenue Service wrongfully collected taxes on diesel fuel used to power refrigeration units on its trailers, a move that could have significant implications for the wider transportation industry.

The lawsuit, filed in federal court, seeks the recovery of $11,048,274 in taxes paid between the first quarter of 2017 and the first quarter of 2023. At the heart of the dispute is the federal excise tax levied on diesel fuel, which is primarily intended to fund highway construction and maintenance. The tax generally applies to fuel consumed for propulsion by vehicles on public roads. Prime contends that the fuel used in its transport refrigeration units (TRUs), commonly known as “reefers,” does not fall into this category.

According to the complaint, these refrigeration units are self-contained systems with their own engines and fuel tanks, separate from the tractor’s engine that propels the vehicle. Their sole function is to maintain a controlled climate inside the trailer for transporting perishable goods such as food, beverages, and pharmaceuticals. Prime’s legal argument asserts that this constitutes an “off-highway business use,” which should be exempt from the federal excise tax under the Internal Revenue Code.

The company stated in its filing that it had previously submitted administrative claims for refunds to the IRS for the periods in question. The lawsuit was initiated after the IRS either denied the claims or failed to issue a decision within the legally mandated timeframe, compelling the carrier to seek resolution through the court system.

This legal challenge is not the first of its kind, and the issue has a complex history. For years, the IRS and trucking companies have disagreed on the taxability of fuel for TRUs. In a notable 2012 case involving Core-Mark International, a federal court sided with the government, finding that the fuel was subject to the excise tax. That ruling created a challenging precedent for carriers seeking refunds.

However, the legal landscape has shifted in recent years. In 2017, the IRS’s own Office of Chief Counsel issued an advice memorandum that appeared to support the industry’s position. The memo concluded that fuel used in a TRU’s separate motor qualified as a non-taxable, off-highway business use. While not legally binding on courts, such internal guidance often influences how tax law is interpreted and applied.

More significantly, a 2023 court decision has provided a powerful new precedent for carriers like Prime. In a case involving G&J Pepsi-Cola Bottlers Inc., a U.S. district court ruled in favor of the company on nearly identical grounds, ordering the government to refund the excise taxes paid for fuel used in its refrigerated trailers. That victory has emboldened other companies in the refrigerated transport sector to pursue their own claims.

A favorable outcome for Prime could solidify this new precedent and trigger a wave of similar lawsuits from other trucking companies that operate reefer fleets. The financial stakes are substantial, potentially amounting to hundreds of millions of dollars in refunds across an industry that is critical to the nation's supply chain for food and medicine.

Disputes over federal excise taxes, like the one Prime is pursuing, highlight a critical area where many businesses overlook potential savings. The tax code is filled with specific exemptions for “off-highway” or non-propulsion uses of fuel, extending beyond trucking to industries like construction, agriculture, and manufacturing. However, claiming these credits and refunds is not automatic; it requires meticulous record-keeping to segregate fuel usage and proactive, often complex, filings. We've seen many mid-sized companies pay these taxes for years without realizing they qualify for a refund.

The key is a thorough review of operations to identify all non-taxable fuel consumption. For businesses navigating these intricate rules, professional guidance is essential. C&S Finance Group LLC specializes in federal and state tax preparation and compliance, helping clients identify and secure these types of refunds. If your business uses fuel for purposes other than on-road transportation, exploring your eligibility for a refund is a prudent step, and you can learn more by contacting us at csfinancegroup.com.

The case will now proceed through the federal court system, where both sides will present their arguments. The transportation industry, along with tax professionals, will be watching the proceedings closely. A definitive victory for Prime Inc. would likely establish a clear and binding precedent, prompting many other carriers to file their own refund claims and potentially reshaping how the IRS applies fuel excise taxes to specialized commercial equipment.