Inflation in the U.S. accelerated to 4.2% annually in May 2026, reaching its highest level since April 2023. This rise has been primarily driven by a 23.5% surge in energy prices, exacerbated by the ongoing conflict in Iran. The New York Times reports that gasoline prices have increased more than 30% since the start of the war, which began in late February 2026. The conflict has led to the closure of the Strait of Hormuz, a critical choke point for global oil transit, causing significant disruptions in supply and contributing to the inflationary pressures.

Key Takeaways

• Markets suggest that the likelihood of annual inflation being 3.6% or less in June has decreased, consistent with higher inflation expectations.
• Observations indicate an increased probability of the Federal Reserve maintaining or potentially raising interest rates in 2026, as inflationary pressures persist.
• Pricing suggests a heightened chance of crude oil reaching a new all-time high, influenced by ongoing geopolitical tensions and supply disruptions.

What to Watch

Market participants will be closely monitoring the upcoming U.S. CPI report for June, scheduled for release by the Bureau of Labor Statistics on July 14, 2026. This report will be crucial in shaping expectations around inflation trends and the Federal Reserve’s monetary policy decisions. Additionally, developments in the geopolitical landscape affecting oil supply and prices will be key indicators of potential further inflationary pressures.

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