An expert forecasts how the Iran war could hit your budget
The Strait of Hormuz blockade has disrupted global energy flows for over a month, with the U.S. Turning back 13 ships attempting to reach Iranian ports since enforcement began. Despite rising fuel costs, American grocery prices showed no increase in March according to the Consumer Price Index, prompting questions about whether food inflation remains a looming threat.
On April 17, 2026, the U.S. And Iran reached a deal to reopen the Strait of Hormuz for the duration of their ceasefire, though a permanent peace agreement has not been negotiated. This development followed Pentagon briefings where General Dan Caine, chairman of the Joint Chiefs of Staff, confirmed that U.S. Forces have not boarded any ships as part of the blockade but are actively monitoring compliance.
To understand the potential ripple effects on household budgets, World Today Journal consulted Ken Foster, an agricultural economist at Purdue University, whose research focuses on supply chain dynamics and price transmission in agricultural markets.
Why haven’t food prices risen yet despite the energy shock?
Foster explained that the impact of rising energy costs on food prices is inherently lagged due to contractual and operational buffers in the supply chain. “Many oil and gas shipments that left the Strait of Hormuz at the start of this conflict just recently reached the ports they were headed for,” he said. “And many food producers are operating on contracts based on prewar energy prices.”
He noted that diesel used in food transportation is often pre-purchased, meaning the full effect of higher fuel costs may not appear in retail prices for several weeks. Similarly, intermediaries such as manufacturers and processors may absorb short-term cost increases to maintain margins and avoid losing competitiveness, though this capacity is not indefinite.
Retailers, meanwhile, tend to delay price changes due to competitive pressures, creating a further delay before cost pressures reach consumers. “They’re hesitant to change their prices due to competition,” Foster said, adding that this reluctance can prolong the transmission of shocks through the system.
Are there early signs of pressure in the food supply chain?
Foster pointed to the March 2026 Producer Price Index (PPI) data released by the U.S. Bureau of Labor Statistics as an early indicator of building pressure. The report, which tracks price changes at various stages of production, showed that prices at Stage 1 of the food supply chain — closest to the farm — were 6.2 percent higher in March 2026 compared to March 2025, and 2.4 percent higher than in February 2026.
However, he cautioned against overinterpreting the March figures, noting that the data was collected on March 10, just 10 days after the conflict intensified. “It’s too early to draw firm conclusions from such a short window,” he said. “But it does suggest that upstream costs are beginning to rise.”
Could a substantial jump in food prices still be avoided?
Foster said that if the Strait of Hormuz remains open and shipping returns to near-normal levels, significant food price increases are likely avoidable. “If we see a return to something approaching normal shipping through the strait, then we probably will avoid big shifts in food prices,” he stated.
However, he warned that a prolonged conflict could trigger compounding effects, particularly through fertilizer costs. While North American farmers largely secured their 2026 fertilizer supplies before the war began, a continuation into the 2027 planting cycle could expose them to higher input prices, potentially increasing production costs and, eventually, food prices.
If not fertilizer, what could drive food prices higher?
Beyond fertilizer, Foster identified energy-intensive aspects of modern food production as key vulnerability points. “Energy prices impact manufacturing, transportation, and infrastructure costs. And then there’s the packaging side,” he said.
He highlighted that contemporary food packaging relies heavily on plastics and foams — materials derived from petroleum and natural gas — which are both energy-intensive to produce and chemically complex. “If you think about our food today, we have such great packaging, which reduces food waste. But it is very chemical-heavy. There’s a lot of plastics, a lot of foams. They’re very energy-intensive. And that’s where we’re going to see pressure in the next three to 12 months, if the conflict continues.”
Is there a tipping point beyond which inflation becomes unavoidable?
When asked how quickly the conflict must end to prevent substantial food inflation, Foster declined to specify a precise threshold. “Eric, if I could answer questions like that, I would’ve retired a long time ago,” he said. “All I can say is that the longer the conflict lasts, the more difficult it is for distributors and processors to absorb this into their margins and not pass it fully on to consumers.”
His remarks underscore a growing concern: as cost pressures persist, the ability of intermediate actors to buffer shocks diminishes, increasing the likelihood of broad-based price increases.
How does this crisis compare to past disruptions?
Foster contrasted the current energy shock with more familiar agricultural risks like droughts or crop failures. “Crop issues are typically localized or focus on a few commodities. So, when they pass through the supply chain, consumers can substitute: If beef gets more expensive, they can eat more chicken.”
In contrast, an energy shock permeates nearly every link in the food system — from fuel for tractors and transport to electricity for processing and refrigeration — leaving little room for avoidance. “It passes through to the whole food economy,” he said.
While he acknowledged parallels to the 2022 Russian invasion of Ukraine — which disrupted energy, fertilizer, and grain exports — he noted key differences. “Fortunately, none of the countries in the Middle East that are currently involved in this conflict are large food exporters. And the current energy shock is much larger already. So it’s not a perfect analogy.”
Why could food price increases be long-lasting?
Foster referenced his own research on “broad but lagged and sticky shocks,” explaining that even if food prices begin to rise, they may not fall quickly afterward. “Risk aversion, mainly. Producers and retailers don’t want to be the first to cut prices. And they don’t want to pull back and then find themselves in a loss position.”
He added that historical patterns present food prices tend to rise slowly in response to shocks but decline even more slowly — if at all. “Often, prices don’t decline at all. they just stop growing as fast. So, if we do see food inflation spike, consumers could feel the consequences long after the shock is over.”
What should consumers watch for next?
With the ceasefire-dependent reopening of the Strait of Hormuz now in effect, the immediate focus is on whether compliance holds and shipping volumes normalize. The U.S. Energy Information Administration is expected to release updated data on petroleum flows through the strait in early May, which will provide clearer insight into the blockade’s ongoing impact.
Meanwhile, the Bureau of Labor Statistics will publish the April Consumer Price Index on May 14, 2026, offering the next official measure of whether food prices have begun to rise. Analysts will also monitor the monthly Producer Price Index for signs of accelerating cost pressures at earlier stages of the supply chain.
For now, the absence of visible food inflation does not mean the risk has passed. As Foster emphasized, the full effects of an energy shock often emerge with delay — and once entrenched, can prove persistent.
Stay informed, monitor official economic indicators, and consider how global developments may shape local costs in the months ahead.