Central banks are fighting inflation with broken tools as supply shocks drive prices

US consumer price inflation jumped to 3.3% in March 2026, a near 1-percentage-point rise from February, as supply-side shocks tighten their grip on the global economy. The Iran conflict has disrupted oil and commodity exports, creating inflationary pressure that central banks are ill-equipped to contain. Supply disruptions in metals, grains, and livestock now generate macroeconomic effects comparable to oil shocks — driving up prices while industrial production falls. This is not demand-driven inflation. It is stagflation in motion.

Goods inflation in the US rose 0.84% month-over-month in March, the largest increase since January 2022, annualizing at 10.6%. The Euro area faces a parallel surge. Energy price spikes are feeding through to other product prices and, potentially, to wages — a dynamic ECB official Olaf Sleijpen warns could amplify inflationary effects. The IMF confirms the shift: the 2022 disinflation was possible because demand ran into temporary bottlenecks. Now, the supply curve has flattened, making price stability far more costly to achieve.

Yet central banks remain trapped in outdated frameworks. The Federal Reserve is split: some policymakers argue for rate cuts to support jobs if war drags on; others insist on hikes to combat prices. The ECB had expected to hold rates steady in 2026, but rising energy costs have revived intervention talk. The Bank of England is similarly divided. None of this resolves the core issue — monetary policy has little leverage over supply-driven inflation.

Tariffs from the Trump era have already added 0.8 percentage points to core PCE inflation, the Fed estimates, with near-total pass-through to consumer prices. Real hourly earnings have barely risen since 1980, undermining the claim that wage growth is fueling inflation. Instead, high energy prices act as a regressive tax, hitting middle- and lower-income households hardest. Corporate margins are under pressure, consumption is weakening, and US real GDP grew just 0.5% in Q4 2025. Consumer sentiment has hit an all-time low.

The root of inflation lies not in excess demand or loose money, but in the pace of value creation relative to money supply — a relationship central banks no longer control. As supply shocks persist, their tools break. Middle- and lower-income households bear the brunt of high energy prices, which act as a regressive tax.