Americans spend $45 billion more on fuel since Iran war began

Americans have paid roughly $45 billion extra for gasoline and diesel since the Iran war started on Feb. 28, according to a Brown University study [1]. The surge lifts the national average gasoline price above $4.50 a gallon and adds a sizable drag on consumer spending, especially for lower‑income households.

*Figures from separate sources; see notes below.

Scope of the price shock

The Brown University “Iran War Energy Cost Tracker” splits the $45 billion excess into $24.97 billion for gasoline and $19.85 billion for diesel [1]. Those totals translate to a national average gasoline price of $4.55 per gallon, more than a 50 % jump from pre‑conflict levels. AAA data cited by CNBC puts the current gasoline price at $4.39 per gallon, confirming a rise of roughly 47 % since early March [2]. Diesel has followed a similar trajectory, climbing to about $5.52 per gallon, also up about 47 % over the same period [2].

Household impact and broader economy

Moody’s Analytics estimates the extra fuel cost per household at $447.19, which aggregates to nearly $60 billion in total consumer outlays [2]. The higher energy bill erodes the $384 per‑household boost from recent tax refunds, effectively wiping out that fiscal stimulus [2]. Lower‑income families, which allocate a larger share of income to food and energy, face the steepest squeeze, a trend highlighted by Goldman Sachs and echoed by California’s petroleum watchdog, which reports a $58.8 billion added fuel burden after 107 days of the conflict [3].

The surge in energy prices coincides with a modest 0.5 % rise in consumer spending from March to April, but that growth is largely financed by dwindling savings and rising credit use, as personal savings fell to 2.6 % and credit‑card debt climbed to $1.25 trillion in Q1 2026 [2]. These dynamics suggest that the fuel shock is contributing to a broader weakening of disposable income and could dampen demand for non‑essential goods.

Policy response and market outlook

The Trump administration is coordinating with the International Energy Agency to release 400 million barrels of oil and refined products, including 172 million barrels from U.S. reserves, in an effort to ease the supply pinch [1]. President Trump has also floated the idea of temporarily suspending the federal gasoline tax, though no decision has been announced. Analysts warn that even if the Strait of Hormuz reopens, it may take months to years for inventories and production to normalize, keeping fuel prices elevated well into 2027 [3].

What to watch

• IEA supply releases – any announced volumes of oil or refined products could temper price gains.
• U.S. gasoline tax legislation – a temporary suspension would directly affect pump prices.
• Strait of Hormuz status – updates on the blockade’s duration will shape future fuel cost trajectories.

The $45 billion extra fuel bill underscores how geopolitical conflict can quickly translate into sizable household expenses and broader macroeconomic strain, leaving policymakers and markets to monitor supply‑side relief efforts and consumer‑spending trends closely.