Filling a 15-gallon tank now costs about $66.45 at the national average, up from roughly $45.15 three months ago. That difference, nearly $80 a month for a once-a-week fill-up, traces directly to a military conflict the White House says is already over.
Regular unleaded gasoline averaged $4.43 a gallon nationally for the week ending May 26, 2026, according to the U.S. Energy Information Administration’s weekly retail price series. For the week ending February 23, 2026, before U.S. military operations against Iran began on February 28, that figure sat at roughly $3.01. The 47% jump is the steepest three-month gasoline surge since the early weeks of Russia’s invasion of Ukraine in 2022.
On May 1, President Trump notified Congress that hostilities with Iran had been “terminated,” a formal step under the War Powers Resolution. Yet U.S. Navy warships remain stationed in and around the Strait of Hormuz, enforcing a blockade that continues to choke the waterway through which roughly 20% of the world’s daily oil supply travels, according to longstanding EIA estimates of Hormuz transit volumes. The gap between the administration’s legal language and the reality at the pump is growing wider by the week.
The price surge, week by week
The EIA’s weekly retail series, the federal government’s primary benchmark for consumer fuel costs, charts a sharp and unbroken climb starting in early March 2026. Before the conflict, the national average had held near $3.01 for several consecutive weeks. By mid-March it crossed $3.50. By mid-April it passed $4.00. The late-May reading of $4.43 is the highest national average since summer 2022, when prices briefly topped $5.00 amid the global energy shock triggered by the war in Ukraine.
Crude oil benchmarks have tracked a parallel rise. Brent crude, the global pricing standard, climbed above $105 per barrel in late May after trading near $74 in late February, according to Intercontinental Exchange settlement data. West Texas Intermediate, the U.S. benchmark, has followed a similar path. Analysts at Rystad Energy and S&P Global Commodity Insights have attributed a large share of the crude price increase to the Hormuz disruption, while noting that seasonal refinery maintenance and OPEC+ production decisions have also contributed.
The pain is distributed unevenly. In California, where state taxes and reformulated-fuel requirements already push prices well above the national average, some stations are posting prices above $5.50, according to AAA’s state-level price tracker. Parts of the Gulf Coast and Midwest, closer to domestic refining capacity, have seen smaller increases. But the direction is the same everywhere: sharply higher since late February.
Gasoline is only part of the picture. Diesel prices have climbed on a similar curve, raising costs for trucking, freight rail, and farm equipment. Those increases ripple into grocery bills, shipping surcharges, and airline fares, compounding the pressure on households already stretched by elevated costs for housing and food.
The War Powers clock and the “terminated” letter
The president’s May 1 notification carries specific legal weight. Under the War Powers Resolution of 1973, a president who deploys forces into hostilities without a declaration of war must notify Congress within 48 hours and either obtain legislative authorization within 60 days or begin withdrawing forces within an additional 30-day window. Trump’s initial notification was sent on March 1, placing the 60-day authorization deadline at April 30.
By declaring hostilities “terminated” on May 1, one day after that deadline expired, the administration effectively sidestepped the need for a congressional authorization vote. The Associated Press reported that U.S. military assets remain deployed in the region despite the formal declaration, raising questions about whether the legal label matches conditions on the water. Under the statute, a “termination” of hostilities removes the authorization clock but does not, on its own, require a withdrawal of forces.
Reaction on Capitol Hill has been vocal but procedurally stalled. Sen. Tim Kaine of Virginia, a Democrat who has long pushed for stricter War Powers enforcement, called the letter “a legal fiction designed to avoid accountability.” Several Republican members, including Rep. Thomas Massie of Kentucky, have echoed concerns about executive overreach. But as of late May 2026, no formal resolution challenging the president’s declaration or demanding a new authorization vote has advanced to a floor vote in either chamber.
Why the “terminated” label has not lowered prices
Oil markets price supply risk, not diplomatic declarations. As long as U.S. warships enforce restrictions on tanker traffic through the Strait of Hormuz, traders treat millions of barrels per day as constrained or at risk of further disruption. That risk premium stays embedded in futures contracts regardless of what the White House calls the operation.
The administration has not offered a public timeline for withdrawing naval forces or fully reopening shipping lanes. The Pentagon has declined to provide detailed briefings on the blockade’s current scope, including how many vessels are deployed and what share of normal Hormuz traffic is being allowed through. Without that information, energy analysts are relying on commercial shipping data, satellite imagery, and marine insurance rate changes to estimate the scale of the disruption.
One tool the administration has not yet used is a large-scale release from the Strategic Petroleum Reserve. The SPR held approximately 395 million barrels as of the Department of Energy weekly status report for the week ending February 21, 2026, well below its 2020 level of roughly 650 million barrels after significant drawdowns during the 2022 energy crisis and only partial refilling since. A major release could temporarily ease prices, but it would further deplete a reserve designed for genuine supply emergencies. Some energy policy analysts argue the current situation qualifies as exactly that; others warn that a release without a clear end to the blockade would offer only a brief reprieve.
Iran’s posture adds another layer of uncertainty. Tehran has described the blockade as an act of war and has not signaled willingness to negotiate while U.S. naval forces remain in the strait. Allied nations, including the United Kingdom and France, have ships in the region but have stopped short of formally joining the blockade, instead conducting what their defense ministries describe as “freedom of navigation” operations. No multilateral diplomatic framework to wind down the standoff has emerged.
What $4.43 actually costs a household
For a two-car family that fills up once a week per vehicle, the jump from $3.01 to $4.43 adds roughly $160 a month in fuel costs alone, before accounting for the higher prices on groceries, goods, and services that travel by diesel-powered truck and rail. That is real money in a household budget, and it arrives on top of mortgage and rent increases that have not eased.
Mark Zandi, chief economist at Moody’s Analytics, told reporters in mid-May that energy costs at current levels, if sustained through the summer driving season, could shave an estimated 0.3 to 0.5 percentage points off GDP growth in the second half of 2026. Consumer confidence surveys from the University of Michigan already show a sharp decline in sentiment tied to fuel costs.
Historically, sustained gasoline prices above $4.00 have coincided with measurable pullbacks in discretionary spending. During the 2022 spike, AAA reported a noticeable drop in summer road-trip bookings once the national average passed $4.50. The current trajectory puts the country on a similar path heading into June.
The EIA will publish updated price data weekly. Congress may or may not force a vote on authorization. The Pentagon may or may not announce a drawdown. Until at least one of those variables shifts in a direction that markets find credible, the number on the pump will keep telling a different story than the one coming out of Washington.
Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
