As the United States and Israel launched a war against Iran, the costs and consequences extended far beyond the battlefield, influencing energy markets, inflation, and financial conditions around the world. The confrontation, lasting months, prompted a cascade of economic disruptions that policymakers and investors will be tracking for years. The conflict cost lives among military personnel and civilians and disrupted trade routes, with the Strait of Hormuz becoming a focal point of supply risks and price volatility.
Domestic costs mounted quickly. Moody’s Analytics estimates put U.S. consumer and taxpayer costs at roughly $132 billion so far, a figure that continues to tick higher as the war persists. The disruption to energy flows through the Strait of Hormuz contributed to a surge in gasoline prices, with prices rising from just under $3 per gallon at the war’s outset to peaks above $4.50 a gallon, according to AAA. Even as wholesale crude and gas prices retreated in recent weeks, the war’s toll on fuel costs remains substantial, translating into broader transportation and consumer-expenditure pressures.
Daily gasoline costs remained elevated, with 360 million to 380 million gallons of gasoline consumed in the United States each day, per the Energy Information Administration. At the war’s peak, that translated into more than $360 million per day in incremental gasoline costs for motorists. Diesel prices followed a similar trajectory, surging from about $3.76 to roughly $5.69 per gallon in the peak period, further lifting trucking and logistics costs across the economy. Jet fuel price pressures contributed to higher airline fares, with air travel costs rising significantly as oil and energy markets tightened.
The war rippled into the housing market as mortgage rates moved higher, complicating affordability for prospective homebuyers. By late spring, the average 30-year fixed mortgage rate had climbed to about 6.52%, according to Freddie Mac. For a typical $400,000 home purchase with 20% down, the monthly principal-and-interest payment rose by roughly $110 compared with prewar levels, potentially restraining housing activity as buyers confronted higher financing costs.
Beyond the United States, global growth and commodity markets bore the impact. The World Bank lowered its 2026 global growth forecast, citing elevated inflation and risk premiums tied to the conflict, while Middle Eastern economies faced more acute slowdowns. The IMF also adjusted its outlook, with Qatar’s revision among the largest, reflecting the broader disruption to energy exports and investment sentiment. The conflict’s effect on global energy supply helped push oil and gas prices higher and tightened logistics networks that support worldwide manufacturing and agriculture.
In the Middle East, Iran’s blockade of the Strait of Hormuz disrupted exports of oil and gas, compelling producers in the region to reduce crude output by more than 11 million barrels per day in May versus pre-conflict levels, according to the U.S. Energy Information Administration. Saudi Arabia redirected much of its exports through alternative routes and infrastructure, while Iran faced sharp disruption to its own energy shipments and revenue streams. These energy dynamics contributed to a complex pricing environment for crude, refined products, and related commodities, complicating inflation dynamics in many economies.
The war’s broader macro effects extended to financial markets and policy. The World Bank cut its global growth projections for 2026, reflecting slower expansion and higher energy costs across Europe and Asia. Several economies reported inflation pressures that fed into central banking caution, influencing rate expectations and financial conditions globally. In the Middle East, the conflict also affected tourism, air travel, and business sentiment, which had knock-on effects for investment and development plans in the region.
On the geopolitical front, the conflict underscored vulnerabilities in global supply chains, particularly for semiconductors, fertilizers, and other critical goods reliant on regional logistics networks. Agricultural and manufacturing sectors faced higher input costs, which could compound inflationary pressures if firms pass costs through to consumers. In international trade, the shock to energy markets and transport costs weighed on investment and growth trajectories for economies linked to oil and gas trading and to diversified manufacturing hubs around the world.
The Pentagon’s latest tally lists $29 billion in operational costs for the war, according to Comptroller Jules Hurst, a figure that reflects ongoing repair and replacement needs for equipment. Several bases in the Middle East endured damage from drone and missile strikes, and the broader security footprint required to sustain operations added to the fiscal burden facing U.S. defense planners. Lawmakers are expected to seek supplemental funding to cover these expenses as the conflict unfolds and regional security dynamics evolve.
In terms of public opinion, political costs have been evident as well. Early in the conflict, President Trump’s net approval rating showed notable weakness in polling aggregates, with disapproval margins widening as war-related cost pressures spilled into consumer prices and everyday costs. The political toll underscored the challenge for leadership to balance military objectives with domestic economic resilience.
Global energy markets and policy responses will continue to shape the trajectory of inflation, growth, and investment in the months ahead. The war’s economic footprint—its direct costs, price pressures on fuel and commodities, and the ripple effects through housing, transportation, and trade—provides a stern reminder of how geopolitical frictions can swiftly translate into tangible costs for households and economies worldwide.
