Iranian Lawmaker Links Fed Rate Hike to Hormuz Blockade via Taylor Equation

The ongoing conflict between Iran and the United States has introduced a novel vector of confrontation: financial mathematics. Following Iranian missile and drone attacks that have degraded US military assets and infrastructure across the Middle East, Tehran Parliament Speaker Mohammad Bagher Ghalibaf published a post on X invoking the Taylor equation, a formula used to determine interest rates, alongside a pointed message regarding the Strait of Hormuz.

“Let’s see if a hike could open SOH or produce a single barrel,” Ghalibaf wrote, referencing the strategic waterway that Iran has effectively blocked. He added, “You can’t 25bp [basis points] a chokepoint,” implying that the geopolitical risk premium imposed by Iran on global energy supplies dictates monetary policy. His post came hours after the US Federal Reserve announced a 25-basis-point increase in benchmark interest rates, marking the first hike in three years.

Chris Beauchamp, chief market analyst at IG Group, described the post as “spectacular agitprop,” noting Iran’s demonstrated capacity to provoke its US adversary. However, the underlying question remains whether the war in the Middle East is directly influencing American monetary policy.

The Taylor equation, developed by economist John Taylor in the early 1990s, estimates the appropriate federal funds rate based on inflation and the “output gap”—the difference between actual and potential economic output. The formula suggests that rates should rise when inflation exceeds the 2 percent target or when economic output outpaces potential. While it serves as a benchmark, Federal Reserve policymakers consider a broader array of economic indicators.

According to experts, multiple factors are driving the current inflationary environment. These include tariffs imposed by President Donald Trump, the energy shock resulting from the US-Israeli war with Iran that began on February 28, and massive capital investment linked to the artificial intelligence boom. Fed Chairman Kevin Warsh acknowledged the impact of geopolitical tensions during his post-hike speech. “There’s no hiding from hot spots around the world,” Warsh said, citing the rise in petrol prices as a factor in the decision to raise rates.

Beauchamp argued that the conflict is an indirect but significant driver of the rate hike. “The energy spike has combined with the rise in yields to drive the Fed into a corner with no way out,” he said. Susannah Streeter, chief investment strategist at the Wealth Club, agreed that elevated crude prices and concerns over energy supplies were key issues behind the decision, stating there is “no denying” Iran’s retaliatory actions have intensified inflation forecasts.

Despite these influences, experts caution against the notion that Iran “sets” US interest rates. Streeter emphasized that AI hyperscalers’ spending power and resilient domestic demand are also fueling inflationary pressures. “While Tehran has arguably had an influence on some of the forces feeding into US monetary policy… it is not ‘setting’ US interest rates,” she explained. She noted that the Federal Reserve responds to a wide range of data points beyond energy markets.

Ghalibaf’s latest mathematical reference follows a pattern of using financial rhetoric to critique the US war effort. In March, he mocked efforts by the Trump administration to manipulate oil futures, arguing that financial maneuvers cannot create physical fuel. Last month, he shared a graphic reading “Make America Hungry Again,” juxtaposing Trump’s campaign slogan with US food insecurity statistics. “You can’t cover up defeats with false claims,” Ghalibaf stated at the time, continuing his strategy of weaponizing economic arguments against the US administration.