Input cost inflation in the United States has accelerated significantly, reaching an 11-month high in April 2026. This surge is primarily attributed to disruptions in global supply chains, exacerbated by ongoing geopolitical conflicts, and a notable increase in energy prices. Businesses across various sectors are reporting higher charges for a broad range of commodities and inputs, signaling a challenging environment for price stability.

The latest S&P Global US PMI Composite Output Index reported an increase to 52.0 in April, up from 50.3 in March, indicating a rebound in business activity. However, this growth is tempered by a sharp rise in input costs, with the measure of prices paid by businesses for inputs climbing to an 11-month high of 62.6. Manufacturing input costs saw a particularly sharp increase, reaching a ten-month high and the second-fastest rise since July 2022. Similarly, services costs experienced their largest increase since December and among the sharpest in three years.

The ongoing conflict in the Middle East, particularly concerning the Strait of Hormuz, has disrupted shipping routes and driven up oil prices. This has had a ripple effect across various industries, increasing costs for energy, fertilizers, petrochemicals, and aluminum. Companies are also citing rising staffing costs as another contributing factor to the higher input expenses.

These increased input costs are translating into higher prices for goods and services. Average selling prices for goods and services rose in April at the fastest rate since July 2022. Manufacturers reported a steep jump in goods prices, with the rate of inflation at a ten-month high, while service sector selling price inflation accelerated to a 45-month high.

The implications for economic policy are significant. The accelerating inflation, coupled with potentially modest economic growth, presents a dilemma for the Federal Reserve. Experts suggest that it will be increasingly difficult to justify interest rate cuts if inflation continues on this upward trajectory. Small businesses, in particular, are feeling the strain, with inflation identified as their top challenge, leading to cutbacks in hiring and investment plans.

Looking ahead, the persistence of geopolitical conflicts and their impact on energy markets and supply chains will be crucial determinants of future inflation trends. While some forecasts suggest a moderation in cost growth for 2026, the current data points to continued upward pressure on prices in the short to medium term.