How the Iran War Is Forcing Central Banks to Abandon Rate Cuts

Policymakers flagged that the war is driving up both oil prices and the won's exchange rate, creating simultaneous upside inflation pressure and downside growth risk. South Korea's annual inflation accelerated to 2.2% in March 2026, above the central bank's 2.0% target, fueled by surging petroleum product prices . The BOK governor warned that headline inflation is now expected to "exceed considerably" the February forecast and that the risk of stagflation—slower growth combined with higher prices—"cannot be completely ruled out" .

Speculation about a rate hike has revived in South Korea. In March, the oil surge prompted bond yields to jump and economists to warn that the BOK may need to revise its inflation forecast upward and potentially tighten rather than cut further .

Federal Reserve: From Cuts to Penciled-In Hikes

The Federal Reserve has staged the most dramatic hawkish pivot. At its March 2026 meeting, the Fed held the federal funds rate in the 3.50%–3.75% range, but the tone was far more cautious than markets anticipated . By April, the shift had hardened into an open discussion of raising rates.

Minutes from the April 28-29 Federal Open Market Committee (FOMC) meeting revealed that a majority of policymakers felt "some policy firming would likely become appropriate" if inflation remains persistently above the 2% target . Fed Presidents Austan Goolsbee and Beth Hammack both emphasized in early April that fighting inflation has returned as the top priority, ahead of labor market concerns . Incoming Chair Kevin Warsh, set to take over after Jerome Powell's final meeting, will inherit a committee that is not just on hold but actively leaning toward tightening.

The oil math is driving the rhetoric. The Dallas Fed estimated that the Iran war adds 0.6 percentage points to headline PCE inflation for 2026 . Oxford Economics modeled a worst-case scenario—oil at $140 a barrel—that would push U.S. inflation to 5%, its highest since March 2023, likely forcing the Fed to hike . Markets have already priced in zero rate cuts for 2026 .

The Bank of Canada joined the Fed in striking a hawkish hold in March, with its Governing Council warning that if energy prices stay high, "we will not let their effects broaden and become persistent inflation" .

European Central Bank: Forecasts Slashed as Reality Bites

The ECB left its key rates unchanged for a sixth straight meeting in March 2026 but sharply raised its inflation projections. The new baseline sees 2026 headline inflation averaging 2.6%, up from a pre-war forecast of just 1.9% in December 2025 . Core inflation, which excludes energy and food, is projected at 2.3% for 2026 .

These forecasts already look optimistic. Actual euro-area headline inflation hit 3.0% in April 2026, driven by a 10.9% year-on-year surge in energy prices . Core inflation excluding energy stood at 2.2% . The main driver is unambiguous: after contracting by 3.1% in February, energy inflation exploded to 4.9% in March alone as the war and the near-total closure of the Strait of Hormuz sent oil and gas prices spiraling .

The ECB's baseline projections assume oil and gas prices will peak at around $90 per barrel in the second quarter of 2026 and then decline . But by the time the forecasts were released, Brent crude was already trading at $112-$115 per barrel . The ECB itself acknowledges that in a severe scenario—where energy prices remain elevated for an extended period—euro-area headline inflation could reach 4.4% in 2026 .

ECB President Christine Lagarde warned that the war has a "material impact on near-term inflation" . Because the euro area is a large net importer of energy, a prolonged Middle East conflict is an especially potent drag, pushing prices up while depressing consumption and investment .

What Comes Next: A Stagflationary World

The synchronized central bank response reveals a singular, uncomfortable reality: the global economy has re-entered a supply-shock environment that central banks cannot easily manage. Raising rates to fight energy-driven inflation risks crushing growth at a time when demand is already fragile. Holding rates steady and hoping for the best—the current strategy—leaves policymakers exposed if oil prices stay elevated and inflation expectations de-anchor.

New York Fed President John Williams summarized the risk bluntly in mid-April, warning that the Middle East conflict poses the risk of a "large supply shock" that could simultaneously raise inflation and dampen economic activity—the textbook definition of stagflation .

As of mid-2026, every major central bank has paused its easing cycle. If energy-driven inflation persists into the summer, the question will quickly shift from "Will they cut?" to "Who will hike first?"