Iran Deal Sends Oil Lower, Clears Path for G10 Rate Hikes

The United States and Iran reached an agreement to end their war, sending oil prices sharply lower. The drop removes a key upside risk to inflation that central bankers across the G10 had flagged repeatedly over the past year. Oil shed more than 4% in early trading after the accord was confirmed, unwinding a chunk of the geopolitical premium that had built up since the conflict escalated.

The European Central Bank has been among the most vocal about energy spillovers. ECB officials said high oil prices were delaying the return of headline inflation to the 2% target. The decline in crude now removes that headwind, though the ECB's own forecasts still show inflation above target through next year. Traders said the oil move alone is unlikely to push the ECB toward a cut before June.

The Federal Reserve faces a similar calculation. Chair Powell told reporters after the March meeting that oil was a risk factor, though not the dominant one. With core PCE still running near 3%, the Fed is in no rush to ease. The drop in oil could help lower headline prints in coming months. Officials have emphasised they need to see sustained progress on services prices. Markets continue to price the first rate cut in September, with roughly a 50% probability as of Tuesday.

The Bank of England held rates at 3.75% last week in a 7-2 split. Governor Bailey pointed to energy costs as a reason for caution on inflation. Now that crude is falling, some MPC members may feel more comfortable voting for a cut at the May meeting. Sterling slipped below $1.24 after the BOE decision and has stayed there. Lower oil could weaken the pound further if it leads to narrower rate differentials versus the dollar.

At the Bank of Japan, the dynamic is different. Japan imports nearly all of its oil, so falling crude is a direct positive for terms of trade. The yen rallied against the dollar on the news. BOJ Governor Ueda has said the central bank will raise rates if inflation stays above target. Lower energy costs take some pressure off that outlook. Markets see the next BOJ hike in October.

The Reserve Bank of Australia and the Reserve Bank of New Zealand also benefit from lower oil. Both face lingering domestic inflation. The RBA held rates at 4.10% in March and has not signalled a near-term cut. A sustained drop in oil could give the RBA cover to hold rates steady for longer. It would not trigger an easing cycle.

Currency markets reacted in line with the oil move. The dollar softened against the yen and the euro. Commodity-linked currencies like the Canadian dollar and Norwegian krone fell. Lower oil reduces export revenues for Canada and Norway, making their currencies less attractive on yield. The euro gained as the bloc's reliance on energy imports narrowed the trade deficit.

The broader macro transmission is straightforward. Cheaper oil lowers headline inflation, which in theory gives central banks more flexibility. Core inflation remains the primary driver of policy, and that is still elevated across the G10. Traders said the oil drop may delay further tightening in places like the UK and Europe. It is unlikely to trigger early cuts anywhere. The next test comes with US CPI data in mid-April, followed by the ECB meeting later that month.