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Butane not an alternative fuel mixture credit

mixture of alternative fuel
Alternative fuel mixture credit


In what can only be described as a defining moment for the energy sector, the Federal Circuit Court of Appeals has delivered a groundbreaking decision. They have unequivocally ruled that butane and gasoline mixtures fall outside the realm of “alternative fuel mixtures.” This verdict effectively disqualifies these mixtures from the much-contested alternative fuel mixture credit. The Court of Appeals, aligning with the wisdom of the Fifth and Seventh Circuits, underscored a critical point: both butane and gasoline are "taxable fuels" as per Code Sec. 4083(a)(1). This insight was pivotal in shaping the court's interpretation of Code Sec. 6426(e), ultimately leading to the exclusion of butane-gasoline mixtures from the definition crucial for tax credit eligibility. Let's dive into the riveting details of this case.

Behind the Scenes: The Background of the Case

At the heart of this legal drama was Philadelphia Energy Solutions Refining and Marketing, LLC, embroiled in a battle over tax refunds. The company staked a claim for refunds on excise taxes paid for their butane and gasoline mixtures, categorizing them as "alternative fuel mixtures" under 26 U.S.C. §6426(e). This bold move, however, was met with resistance from the United States Court of Federal Claims, setting the stage for an appeal at the Federal Circuit.

The Crux of the Controversy

The battle lines were drawn over the interpretation of the Tax Code. The million-dollar question was whether a concoction of two taxable fuels, butane and gasoline, could wear the crown of an “alternative fuel mixture” to claim the coveted tax credit.

Philadelphia Energy played their card, arguing that butane, typically known as a liquefied petroleum gas, deserved a spot under the tax code's alternative fuel umbrella. The IRS, however, wasn't buying it, maintaining a firm stance that both butane and gasoline are taxable fuels, and thus, their blend doesn't fit the alternative fuel mixture bill.

Unpacking the Decision: Key Takeaways

  • Context is King in Statutory Language: The court's decision spotlighted the need to interpret statutory language within its broader context, emphasizing consistency across the Tax Code.

  • Butane's Taxable Fate: Despite Philadelphia Energy's persuasive arguments, the court stood its ground, declaring butane a taxable fuel, thus disqualifying it from being labeled as an alternative fuel for this specific tax credit.

  • A Tale of Two Fuels: The decision illuminated the long-standing legal distinction between taxable fuels and alternative fuels – a key factor in the court's deliberations.

  • A Ripple Effect in the Energy Sector: This ruling sends shockwaves through the energy industry, especially for those in the business of producing and selling fuel mixtures. It highlights the criticality of aligning fuel classifications with the tax code for tax purposes.


The Federal Circuit's verdict in Philadelphia Energy Solutions Refining and Marketing, LLC v. United States is more than just a legal decision; it's a beacon guiding the energy industry. It underscores the nuances of statutory interpretation and the established classification framework in tax law. This case acts as a crucial wake-up call for energy companies, reminding them to be meticulous in how their products are categorized under the Tax Code, particularly when in pursuit of tax credits.


The content provided in this blog post is for informational purposes only and is not intended as legal advice. While we strive to ensure the accuracy and timeliness of the information presented, the rapidly changing nature of legal and regulatory environments means that we cannot guarantee its current applicability or completeness.

This blog post does not create an attorney-client relationship between you and Le Tax Law, PLLC. It should not be used as a substitute for competent legal advice from a licensed professional attorney in your jurisdiction.

Readers are advised to consult with a qualified attorney to understand how these legal developments may apply to their specific circumstances. If you are seeking legal advice or assistance, we encourage you to reach out to our experienced team.


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