Oil Shock Deepens as Middle East War Drives Inflation Risk and Puts Central Banks on Alert

The third week of the Middle East conflict has intensified concerns about its economic fallout, with oil supply disruption emerging as the key transmission channel into global markets. According to TreasuryONE’s André Cilliers, the most immediate risk lies in the Strait of Hormuz, where Iran has indicated that vessels linked to the United States or Israel could be targeted. The situation has become more dangerous as attacks have expanded beyond military assets to include civilian infrastructure such as airports and hotels across the region.

The resulting rise in oil prices is already creating significant inflationary pressure. In South Africa, TreasuryONE estimates that if current under-recoveries persist through month-end, petrol prices could increase by roughly R6 per litre and diesel by more than R8 per litre. Such increases would have a material impact on inflation and consumer spending, while also feeding through to logistics and broader business costs. Similar pressures are already being felt globally as higher energy prices reduce disposable income and weaken the wider growth outlook.

These developments come at a sensitive time for central banks, many of which are meeting this week to assess monetary policy. While inflation had previously shown signs of easing, the conflict has materially changed the outlook. TreasuryONE expects policymakers to remain cautious rather than lower interest rates in the face of renewed inflation risk and weaker global growth prospects. Higher long-term bond yields are already reflecting this change in sentiment, as markets reassess the path of inflation and monetary policy.

For South Africa, the rand remains highly sensitive to these external developments. Commodity prices, inflation expectations and interest rate movements are all interacting to shape near-term currency direction. TreasuryONE sees the rand broadly contained in a R16.50 to R17.00 range for now, but warns that repeated tests of the R17.00 level make it an important technical threshold. In an environment dominated by headlines and sudden shifts in sentiment, volatility and uncertainty are expected to remain elevated.