US Flash PMI: Manufacturing Surges to 54.0 in April — But Input Costs Hit 10-Month High, Deepening Stagflation Bind Ahead of FOMC

S&P Global's flash US Composite PMI for April 2026 rose to 52.0 (from 50.3 in March), led by a manufacturing surge to 54.0 (from 52.3) — a robust expansion reading. However, the headline expansion masked alarming cost pressures: manufacturing input costs hit a 10-month high (the second-fastest rate of increase since July 2022), while services input costs posted their largest monthly increase since December 2025. PMI data was collected April 9-22, overlapping the Iran ceasefire extension and its market relief rally, which may have temporarily boosted activity sentiment. The cost surge directly deepens the Fed's stagflation bind heading into the FOMC April 28-29 meeting: activity is holding up (partly via tariff front-running and restocking), but price pressures are re-accelerating sharply — driven by US-China tariffs at 31.6% (effective China rate) and Iran war-driven energy costs. Demand growth 'continued to cool' despite the headline PMI expansion. For the FOMC, flash PMI at 52-54 strongly reinforces a hold, but the accelerating cost component raises the bar for any future cuts. Chicago Fed President Goolsbee had warned on April 14 that rate cuts may slip to 2027 if stagflation persists. Global flash PMIs released around the same period showed a divergent picture: some manufacturing hubs contracting while US held in expansion, underscoring the bifurcated global trade war impact.