Services Sector Slows as Iran War Fuels Inflation: ISM Survey

Why It Matters

Persistently higher energy costs threaten consumer purchasing power and could delay economic growth, prompting the Federal Reserve to consider tighter monetary policy.

Key Takeaways

• ISM services index fell to 54%, still above expansion
• Employment index hit lowest level since December 2023
• Prices gauge surged 7.7 points, highest since October 2022
• Brent crude rose 57% to $110 per barrel
• U.S. gasoline prices climbed 38% to $4.12 per gallon

Pulse Analysis

The slowdown in the services sector, highlighted by the ISM’s March survey, signals the first tangible ripple of geopolitical risk on U.S. economic activity. While a 54% reading still denotes expansion, the decline from previous months, coupled with the weakest employment index since late‑2023, suggests firms are curbing hiring amid rising input costs. Analysts watch these metrics closely because the services segment accounts for roughly 70% of GDP, making any contraction a potential early warning for broader growth deceleration.

Oil price volatility has become the dominant driver of the current inflation outlook. Since the Iran war erupted at the end of February, Brent crude has jumped from $70 to $110 per barrel—a 57% increase—while U.S. gasoline prices have climbed from $2.98 to $4.12 per gallon, a 38% surge. These spikes echo the earlier shock from Russia’s invasion of Ukraine, but the new conflict adds uncertainty about supply‑chain resilience and commodity availability. Higher energy costs feed through to transportation, manufacturing, and consumer goods, reinforcing expectations that core inflation will hover near 4% and may compel the Federal Reserve to maintain or raise rates longer than previously projected.

Businesses across sectors are already adjusting to the new cost environment. Airlines report sharply higher fuel expenses, prompting fare revisions and route optimization, while real‑estate firms warn that reduced purchasing power could dampen demand for commercial space. Companies are also revisiting hedging strategies and exploring alternative logistics to mitigate supply‑chain disruptions. For investors and policymakers, the convergence of a softened services hiring outlook, persistent price pressures, and geopolitical risk underscores the need for vigilant monitoring of inflation dynamics and monetary policy responses.