Key Highlights

  • U.S. gasoline prices have reached USD 4.52 per gallon, the highest since 2022, driven by Strait of Hormuz Supply disruptions.
  • President Trump has backed suspending the 18.4-cent federal gas tax, though only Congress has the authority to act.
  • A 90-day suspension would drain an estimated USD 7.5 billion from federal highway and infrastructure funding.
  • Trump's approval on Inflation stands at just 25%, underscoring the midterm electoral pressure driving the proposal.
  • Analysts warn that with Hormuz still closed, any pump price relief would be quickly absorbed by rising crude costs.

A Thin Shield Against a Structural Problem

On Monday, President Donald Trump walked into the Oval Office and handed American motorists an 18-cent promise. Asked whether he would suspend the federal gasoline tax, he replied: "Yeah, I'm going to reduce it," until, he added, "it's appropriate." With pump prices averaging USD 4.52 per gallon nationally and November midterms approaching, the political calculus was straightforward. The economic one was not.

Within hours, Senator Josh Hawley of Missouri introduced a bill to suspend both the federal gasoline and diesel taxes for 90 days. Representative Anna Paulina Luna filed a parallel House measure the same afternoon. The coordination was swift and the messaging unified. What it lacked was a credible mechanism for actually bringing fuel prices down.

The Strait of Hormuz, through which approximately one-fifth of the world's daily oil supply moves, has been effectively closed since Iran entered open conflict with U.S. and Israeli forces in late February 2026. That single chokepoint is doing more to set prices at every American gas station than any congressional tax vote could undo. Cutting 18.4 cents from a USD 4.52 gallon is a fiscal gesture. Reopening the Hormuz is an energy solution. Conflating the two is precisely what this announcement risks doing.

What Is Actually Being Proposed

The federal gasoline tax has held at 18.4 cents per gallon since 1993, unchanged through multiple administrations and oil shocks. The diesel tax runs at 24.4 cents. Both fund the Highway Trust Fund, which finances federal road construction, bridge maintenance, and portions of public transit.

Trump cannot act unilaterally. Congress controls taxation, and Senate Majority Leader John Thune was noncommittal on Monday, pointedly noting the taxes support road repairs and that reopening Hormuz would be the more durable fix. His hesitation reflects a legitimate fiscal concern: a 90-day suspension would drain roughly USD 7.5 billion from infrastructure funding at a time when the Trust Fund already depends on general fund transfers to stay solvent. Since 2008, more than USD 275 billion in supplemental funding has covered its shortfalls.

The proposal is also not new or purely partisan. Democratic Senator Mark Kelly of Arizona had already floated a similar suspension earlier in 2026. That both parties are now reaching for the same lever says less about the policy's economic merit and more about the shared electoral pressure that USD 4.52 gasoline creates.

The Numbers Do Not Add Up

Removing 18.4 cents from a USD 4.52 gallon brings the price to approximately USD 4.34. For a driver consuming 50 gallons per month, that is roughly nine dollars in savings. Real money at the Margin, but not transformative relief against a broader cost-of-living squeeze.

The fundamental problem is that the tax cut addresses none of the underlying drivers. Crude costs are elevated because Hormuz is constrained, and as long as that constraint holds, any downward pressure from the suspension will be progressively absorbed by rising crude prices. Bob McNally of Rapidan Energy Group, a former White House energy adviser, framed it precisely: if the Strait of Hormuz remains closed, consumers will barely notice as pump prices continue climbing regardless of the tax cut.

The administration has deployed other tools, including releasing crude from the Strategic Petroleum Reserve and waiving the Jones Act to ease domestic fuel movement. These are legitimate interventions. But they are absorbing a supply disruption that domestic policy instruments were never built to resolve.

Conclusion

What the gas tax proposal reveals, more than anything else, is the depth of Republican electoral anxiety. Trump's approval rating on inflation sits at just 25% in recent polling, and gasoline is the most visible consumer price in the American economy, updated daily, displayed on roadside signs, paid in cash. It is the inflation indicator that politicians cannot hide from, and with Indiana, Kentucky, and Georgia already cutting state fuel taxes independently, the federal proposal follows the same instinct: create visible, attributable relief before November ballots are cast.

The USD 2.5 billion monthly funding gap that a suspension creates does not disappear. It defers road maintenance, increases general fund dependence, or becomes a future budget problem. None of those outcomes are free.

Tax holidays manage optics. They rarely resolve supply shocks. The Strait of Hormuz is the only variable that materially changes the American fuel price outlook. Until it reopens, 18 cents is not a solution. It is a headline.