PolicyBrief
S. 1026
119th CongressMar 13th 2025
Tar Sands Tax Loophole Elimination Act
IN COMMITTEE

This Act explicitly defines tar sands products as crude oil for excise tax purposes and grants the Secretary authority to include other hazardous fuel products under existing oil tax rules.

Edward "Ed" Markey
D

Edward "Ed" Markey

Senator

MA

LEGISLATION

Tar Sands Tax Bill Closes Loophole, Expands Government Power to Tax New Fuels Immediately

The aptly named Tar Sands Tax Loophole Elimination Act is a very direct piece of legislation: it changes the tax code to make sure that the stuff we call “tar sands” is officially recognized as “crude oil” for excise tax purposes. This isn’t just a semantic change; it means products derived from tar sands—including crude oil condensates, natural gasoline, mixtures containing bitumen, and oil from kerogen-bearing rock—are now explicitly subject to the same federal excise taxes as conventional crude oil.

The New Definition: What Gets Taxed Now

For anyone in the energy sector, this is a clear signal: the free ride for tar sands is over. The bill updates Section 4612(a)(1) of the tax code to specifically list these unconventional sources. If you are refining, transporting, or dealing in these products, you are now squarely on the hook for the existing excise tax, effective the day the bill is signed into law. While this closes a perceived loophole and potentially increases government revenue, it also means higher operational costs for the specific producers and refiners dealing with these heavier, unconventional feedstocks.

The Secretary Gets a Bigger Toolbox

Beyond just tar sands, the bill includes a significant expansion of regulatory authority. It grants the Secretary the power to classify other fuel feedstocks or finished fuel products as taxable “crude oil” or “petroleum product” under existing tax rules (Section 4611). This is a big deal because it allows the tax net to capture new or emerging fuels without needing another act of Congress.

However, there are two important conditions for this new power. First, the fuel must meet the definition of “oil” under the Oil Pollution Act of 1990. Second, and this is the key piece of regulatory uncertainty, the Secretary must determine that the product is produced in large enough commercial amounts that spilling it would create a “significant hazard.” The term “significant hazard” is subjective. For producers of alternative or synthetic fuels, this means that if their product becomes commercially successful, they could suddenly find themselves subject to this tax based on a regulatory decision, not a legislative one, creating a layer of risk for future energy investment.

Real-World Implications: Who Pays?

If you’re a consumer, the immediate impact is likely minimal, but it’s worth watching. When the government imposes a new or clarified tax on producers, those costs often get passed down the supply chain. For the companies extracting and refining tar sands, this is a clear increase in their cost of doing business. The question is whether that cost is absorbed by the producer or eventually trickles down to the gas pump or the price of petroleum-derived products.

For the regulatory side, this bill gives the government a much faster way to ensure that any new, commercially viable fuel source that poses an environmental risk is immediately brought under the existing tax framework. This is beneficial for environmental protection and tax fairness, but the broad authority given to the Secretary—specifically the interpretation of what constitutes a “significant hazard”—is where the regulatory rubber meets the road, and it’s where we’ll see uncertainty for producers of new fuel types.