The price of a gallon of gas is a complex issue, with a multitude of factors influencing its cost. As an energy economist, I often find myself explaining the intricacies of this topic to those who are curious about the factors contributing to gas prices and the potential impact of various policies. The price of a retail gallon of gas is a sum of four key components: the cost of crude oil, refining, distribution and marketing, and taxes. In January 2026, crude oil accounted for approximately 51% of the pump price, refining for around 20%, distribution and marketing for about 11%, and taxes for roughly 18%. However, these proportions can shift significantly based on market conditions. When crude oil prices spike, the price at the pump can be driven by more than 60% by crude oil costs, while during price drops, taxes and logistics become larger shares of the cost. This highlights the significant influence of the global oil market on domestic gas prices. The current situation in early 2026, marked by the war in Iran, exemplifies a classic supply shock. Severe disruptions to shipping through the Strait of Hormuz and attacks on Middle East oil infrastructure have significantly reduced the global oil supply, leading to higher prices. This is particularly concerning as most drivers cannot quickly adjust their driving habits to reduce gas consumption when prices rise, resulting in a limited impact on gasoline demand in the short term. Refining crude oil into gasoline is a critical process, but the U.S. does not have a unified gasoline market. California, in particular, faces unique challenges due to its stricter fuel formulation requirements and geographical isolation from other refining regions. This has led to a 'mystery gasoline surcharge' in California, where prices have been consistently higher than the national average due to reduced competition and higher state taxes. The distribution and marketing category encompasses the costs associated with transporting gasoline from refineries to gas stations. This involves pipelines, ships, rails, and trucks, as well as local delivery trucks. At the retailer's end, factors such as station rent, labor, credit card fees, and franchise fees play a significant role in determining the final price. Interestingly, most gas station operators only make a few cents per gallon on fuel, which is why many gas stations are essentially convenience stores with pumps. The federal government imposes a fuel tax of 18.4 cents per gallon for gasoline and 24.3 cents per gallon for diesel, while states have their own taxes, which vary widely. When gas prices rise, politicians often propose temporary suspension of state gas taxes, but research shows that consumers only receive about 79% of the reduction in gas taxes, while oil companies and fuel retailers retain the remaining 21%. This practice also undermines the funding for road and bridge maintenance, shifting the burden onto future drivers and taxpayers. Furthermore, the 1920 Jones Act, which requires U.S. vessels to transport cargo between U.S. ports, has been temporarily suspended due to the war's impact on gas prices. This waiver has been more commonly used during natural disasters like hurricanes, and it has been estimated to raise East Coast gasoline prices by about a penny and a half per gallon, costing drivers approximately $770 million annually. The price at the pump is a reflection of the global crude oil price, plus various domestic costs, some of which are inefficient. Tax holidays provide only a partial and short-lived rebate, while Jones Act waivers offer minimal relief. To address the underlying issues, a more efficient gas-burning vehicle or one that doesn't burn gasoline at all would be the best solution. In the meantime, it is crucial to understand the true value of the $4.30 per gallon that drivers pay, considering the complex interplay of global and domestic factors that influence the price of gasoline.
