The War in Iran Halted Interest Rate Cuts - critical summary review

For most of last year, the story on interest rates was simple and hopeful: inflation was coming down, central banks were cutting, and anyone with a mortgage or a loan could expect the cost of borrowing to ease through 2026. That story has been rewritten. A war in the Middle East pushed energy prices up across the world, and within a few months three economies that were heading in different directions — Britain, the United States and the eurozone — found themselves facing the same problem. In a single week in August, the UK reported a jump in inflation, the US Federal Reserve published minutes showing officials discussing rate increases, and gold, the asset investors buy when they are nervous, surged. The consensus of "cuts are coming" has been replaced by something colder: higher for longer.

How a war became an energy shock

The conflict between the United States, Israel and Iran, which broke out in late February, hit the world economy through the most sensitive channel there is: the price of oil and gas. Supply disruption in the region — particularly around the Strait of Hormuz, the shipping route through which much of the world's oil passes — sent crude prices sharply higher. Prices fell back when ceasefires were agreed, then climbed again in July when the US and Iran resumed attacks in the strait. By late August, oil was rallying to a more-than-three-week high as talks over the conflict stalled.

The effect on households is indirect but unavoidable. Energy feeds into heating bills, petrol pumps, factory costs and eventually the price of food. The BBC notes it can take a year for changes in food costs to reach the shop shelf, because of how supply chains work — which means the disruption of 2026 may still be arriving in 2027.

Britain: prices up, rates stuck

UK inflation rose to 2.9% in the year to July, up from a 15-month low of 2.6% in June — the first increase since March, and the highest rate in four months. The Office for National Statistics, the government's statistics agency, attributed the rise mainly to gas and electricity: the cap on household energy bills set by the regulator Ofgem went up 13% at the start of July, adding around £221 a year to a typical bill. It was the sharpest summer jump in energy costs in four years.

Underneath, the picture is calmer. Core inflation, which strips out volatile food and energy to show the underlying trend, was unchanged at 2.6%. Services inflation eased. Food prices rose at their slowest annual pace in nearly five years. Wage growth slowed and job vacancies hit a five-year low — a soft labour market makes it less likely that workers bid up pay and lock inflation in.

The Bank of England has held its base rate at 3.75% for a fifth consecutive meeting, the lowest since early 2023 after six cuts between August 2024 and June 2026. Governor Andrew Bailey said inflation had fallen faster than expected but that the Middle East conflict "continues to mean high and volatile energy prices", adding: "That will cause inflation to rise again later this year. However the conflict unfolds, our job is to make sure any increase in inflation is temporary and that it comes back to our 2% target." The Bank has warned that further escalation could push UK inflation to a peak of 4.5% by mid-2027, and is weighing whether to raise rates as early as next month.

Politically, the timing is awkward. Andy Burnham, in his first weeks as prime minister, announced "breathing space" measures including a VAT cut that reduces electricity bills by an average of £45 a year from October. But the consultancy Cornwall Insight expects the Ofgem cap to rise again by 4% in October, taking typical bills to a three-year high. Chancellor John Healey, who has a budget in October, said the economy was resilient despite what he called "Iran war inflation". Ruth Gregory of Capital Economics argues the Bank can look through the shock: "As the latest rebound in energy prices doesn't go much further, we still think the weak labour market will prevent second-round effects, meaning inflation falls to 2% next year." James Smith of the Resolution Foundation, a think tank, put it differently: underlying pressures are still easing, but "this fresh bout of inflation is being driven by events in the Middle East that are largely beyond the government's control."

Washington: the Fed is talking about hikes, not cuts

The minutes of the Fed's July meeting, released in August, were the week's genuine surprise. "Many participants assessed that policy tightening would likely be necessary if inflation did not decline," the summary said, and some officials thought financial conditions might not yet be restrictive enough to get inflation back to the 2% target.

The committee voted 9-3 to hold the benchmark rate in the range it has occupied all year. All three dissenters — the regional Fed presidents of Cleveland, Dallas and Minneapolis — wanted an immediate quarter-point increase, arguing it would head off a steeper and costlier sequence of rises later. US inflation was 3.4% in July, down slightly from June but still well above target, while payrolls actually fell and unemployment dipped to 4.1% mainly because the labour force shrank.

Kevin Warsh, in his first months as Fed chair, has signalled patience; President Donald Trump has made clear he expects faster cuts. Neither is what markets are now pricing. After the minutes, traders shifted to expecting the Fed to stay on hold until December — and then to hike. Previously they had penciled in a September increase.

The eurozone already broke the cycle

The European Central Bank went first. Having cut its main rate steadily from a peak of 4%, it reversed course in June and raised it to 2.25% — the first increase in nearly three years, and an explicit reaction to the Iran war. It held in July, but economists expect another rise in September as the conflict works through the European economy. Eurozone inflation was 2.9% in July, roughly flat on the month before.

Markets are pricing nerves

Gold, which investors buy when they want shelter, jumped more than 4% in a single session in August and reached its highest level since early June, before profit-taking pulled it back. Silver rose too. Morgan Stanley analysts said that with the Fed expected to stay on hold, gold could exceed $5,000 an ounce in 2027, "potentially earlier", though with plenty of volatility along the way. The move followed a US Treasury announcement that it would step up buybacks of longer-dated government bonds, which weakened the dollar and pulled yields down.

Bonds tell the same story from the other side. A government bond sell-off has swept major markets, pushing the yield on ten-year UK government debt above 5% — which raises the interest bill the British Treasury has to pay, right as the chancellor prepares a budget.

What to do with this information

The most concrete consequence lands on mortgages. In the UK, roughly 800,000 fixed-rate deals with interest rates of 3% or below are expected to expire every year on average until the end of 2027, and the rates available now are far higher: the average new two-year fix was 5.62% at the end of July, up from 4.83% at the start of March. If your deal is approaching its end, the useful move is to run the numbers on the new payment now rather than waiting for cheaper rates that the market no longer expects this year. Around a million UK homeowners on tracker or standard variable deals feel base-rate moves more directly, in either direction.

Savers are on the other side of the same trade: rates staying put means returns on deposits are less likely to fall soon than they looked in January.

There are three dated checkpoints worth watching. The ECB meets in September, where economists expect another increase. The Fed is where markets now expect movement in December rather than September. And Ofgem adjusts the UK energy price cap in October, with Cornwall Insight forecasting a 4% rise — the single clearest signal of where British inflation goes next, and it arrives in the same month as the budget.

The broader point, made by both economists quoted above, is that the driver here sits outside the reach of monetary policy: as long as the Middle East conflict is unresolved, energy prices stay volatile, and rate decisions stay hostage to them.