Iran War's Far-Reaching Impact: How Rising Oil Prices Are Affecting US Economy

The US-Israel war on Iran has effectively closed the Strait of Hormuz, a critical shipping route for materials used in the production of various everyday products. As the conflict enters its fifth week, global oil shortages are forcing countries to take severe measures to conserve their reserves.

While US gas prices have surged to their highest level in years, the impact of rising oil prices extends far beyond drivers. Oil is a crucial component in the supply chain, powering machines that manufacture goods and fueling trucks that transport them to stores.

The price increases come at a time when many Americans are already strained by rising housing costs, grocery bills, and electricity statements. A recent Gallup poll found that a third of Americans have had to skip meals and forego other needs to afford their healthcare.

Oil and Gas

The average cost of gas in the US has jumped about 30% over the last month, with the national average hitting $3.97, the highest since 2023. Diesel, which fuels many trucks transporting goods, has increased by about 50%, or $1.69 more than it did a year ago.

Higher diesel costs could soon affect transportation costs and grocery prices, as roughly 85% of agricultural goods are transported by trucks. The impact of oil and gas shortages on the supply chain can be categorized as first-order effects, such as higher prices at the gas pump, and second-order effects, including potential price increases for crops, semiconductor chips, and medical devices.

Fertilizer

Farmers are struggling as the spring growing season approaches, facing higher fertilizer costs and falling commodity prices. A third of global urea trade, a solid nitrogen fertilizer, passes through the Middle East region, with about 20% of imported fertilizer to the US coming from Qatar.

Nitrogen fertilizer is critical to grow corn, which is cultivated by about 500,000 farmers in the US. The White House has promised to minimize disruptions to the US economy, with alternative sources of fertilizer being sought from around the world.

Helium

The conflict has disrupted the global helium supply after Iranian attacks in Qatar, the second-largest producer of helium after the United States. Helium is a key import used in aerospace, magnetic resonance imaging (MRI), and semiconductor chips that power AI.

Jet Fuel

Increases in oil prices could result in higher airfare and shipping costs. The price of jet fuel has doubled since the start of the war, according to the International Air Transport Association. United Airlines announced last Friday that it would have to cut flights due to the surging cost of fuel.

Just as US mortgages were starting to fall in February, the average 30-year fixed mortgage rate ticked up to its highest level in months, reaching 6.22%. Mortgage rates are closely tied to the overall state of the economy, and the US Federal Reserve's decision to leave rates unchanged last week cited uncertainty in the economy, particularly with conflict in the Middle East.