Former Federal Reserve Chair Janet Yellen has suggested that an interest rate cut remains a possibility for late 2026, even with the recent oil price shock caused by the war in Iran.
This idea hinges on a key central banking concept: 'looking through' a supply shock. The surge in oil prices is pushing up overall, or 'headline', inflation. However, the Fed is more focused on 'core' inflation, which excludes volatile energy and food prices. Since core inflation is staying relatively calm, it suggests the problem is a temporary supply disruption, not a fundamental overheating of the economy, you see.
So, what caused this disruption? First, the conflict in Iran severely disrupted oil and gas shipments through the Strait of Hormuz, a critical global energy chokepoint. This sent Brent crude oil prices soaring by as much as 70%. Second, the impact spread beyond just fuel. Shipping insurance costs skyrocketed, and the prices of related goods like LNG, fertilizers, and even components for semiconductors faced upward pressure.
The data clearly shows this split. The March Consumer Price Index (CPI) showed headline inflation jumped to 3.3%, but core inflation was a much milder 2.6%. Furthermore, while surveys show people are worried about prices in the short term (University of Michigan survey), their expectations for inflation over the long run have remained stable (New York Fed survey). This stability is crucial; it gives the Fed confidence that the price spike won't become a permanent problem.
Because these long-term inflation expectations are 'anchored', the Fed feels it doesn't need to raise rates to fight the current inflation spike. Doing so could hurt economic growth unnecessarily. Instead, they can afford to wait and see how things unfold. This aligns with their pre-war stance, which already anticipated only one rate cut in 2026. The oil shock simply reinforces the need for patience.
In essence, the Fed is navigating a complex situation. It is acknowledging the immediate pain of higher energy prices but is betting that it's a temporary storm. By holding rates steady for now, it keeps the option for a single 'insurance' rate cut later in the year, should the economy show signs of weakening under the weight of the supply shock.
- Glossary:
- Look-through (a supply shock): A central bank policy of ignoring temporary inflation spikes caused by supply-side issues (like a war affecting oil), assuming they won't cause lasting inflation.
- Core Inflation: Measures price changes but excludes volatile categories like food and energy. It helps policymakers see the underlying inflation trend.
- Inflation Expectations: The rate at which people—consumers, businesses, investors—expect prices to rise in the future. If these expectations rise, they can lead to higher actual inflation.
