The U.S. Economy Under Stagflation Shadows: Coexisting Growth Resilience and Structural Differentiation in March 2026​ ​

In March 2026, the U.S. economy stands at a crossroads between slowing growth and rebounding inflation. S&P Global's flash composite PMI dropped to 51.4, a new 11-month low. Coupled with soaring energy prices triggered by the Middle East conflict and cooling signals in the job market, stagflation risks have re-emerged as a key focus for the market. However, beneath the surface of overall slowing growth, the divergence in sentiment between manufacturing and services, as well as structural differences in consumption and investment, collectively paint a complex picture of the current U.S. economy—one characterized by "moderate resilience" intertwined with "potential risks."​

Signs of cooling economic growth were particularly evident in March. The composite PMI edged down from 51.9 in February to 51.4, remaining in the expansionary range but indicating mounting pressures on business activities due to slower growth momentum. Chris Williamson, Chief Business Economist at S&P Global, noted that uncertainties stemming from the Middle East war and the impact of rising living costs have directly suppressed market demand. This data suggests that the U.S. annualized GDP growth rate for the first quarter will be only 1.0%, significantly lower than the IMF's previous full-year forecast of 2.6%. By sector, services emerged as the primary drag: its business activity index fell to a 11-month low of 51.1, weighed down by weak new business growth and declining export orders. In contrast, manufacturing rebounded against the trend, with its PMI rising to a two-month high of 52.4, as output and new order growth accelerated—supported by reduced tariff impacts and enterprises' efforts to build safety stocks. This divergent pattern of "strong manufacturing, weak services" highlights the uneven nature of the U.S. economic recovery.​

The resurgence of inflationary pressures has complicated policy regulation. In March, U.S. business input costs recorded their largest increase in 10 months, driven primarily by surging energy prices and supply chain disruptions. This pressure has continued to pass through to end-consumers, with selling prices posting their biggest rise since August 2022. The Federal Reserve previously projected that core PCE inflation would reach 2.7% by the end of 2026, but current data indicates that consumer price inflation may rebound to around 4%. The rising risk of stagflation has placed the Fed in a policy dilemma. On one hand, the job market experienced its first contraction in over a year: nonfarm payrolls decreased by 92,000 in February, the unemployment rate edged up to 4.4%, and the labor force participation rate fell to 62.0%. These figures have strengthened market expectations for interest rate cuts. On the other hand, the rigid constraints of rebounding inflation have limited room for easing. The Federal Reserve opted to keep interest rates unchanged at its March monetary policy meeting and now forecasts only one rate cut for the full year, putting its policy balancing act to the test.​

Structural differentiation continues to deepen across various economic sectors. The job market presents a "two-speed" scenario: healthcare and construction sectors maintain steady growth, while the information industry and public sector undergo continuous layoffs. The retail sector is experiencing restructuring characterized by "expansion in low-tier markets and downsizing of traditional giants." Consumption also shows clear divergence: high-income groups, benefiting from a 3.8% year-on-year increase in real wages, have driven credit card transaction volumes to a near two-year high. In contrast, low-income groups face sustained erosion of purchasing power amid high prices. The foreign trade sector has shown positive signs, with the goods trade deficit narrowing by 48.6% year-on-year in January, but the sustainability of export growth remains constrained by weak global demand and supply chain volatility. Notably, AI investment has emerged as a new growth engine, driving the expansion of semiconductors, the digital economy, and other industries. Its contribution to GDP is expected to reach 0.3 percentage points, serving as a crucial buffer against economic downward pressure.​

Looking ahead, the U.S. economy remains subject to multiple uncertainties. Upside risks include stronger-than-expected AI investment and marginal easing of tariff policies, while downside risks are concentrated in the escalation of the Middle East conflict, the burst of the AI bubble, and debt ceiling negotiations. The core contradiction facing the current economy lies in balancing growth resilience with inflation containment—a challenge that requires the Federal Reserve to strike a precise balance in policy regulation and hinges on the mitigation of geopolitical risks. Overall, the baseline scenario of "moderate growth with structural differentiation" for the U.S. economy in 2026 remains intact. However, the stagflation warning signaled by March's data underscores the need to guard against the impact of escalating risks on economic recovery. Both policymakers and market participants must prepare for a complex operating environment.​