IMF Upgrades UK Inflation Forecast: Return to 2% Target by Mid-2027 as Iran War Impact 'Better Than Feared'

The International Monetary Fund (IMF) has delivered a significant upgrade to its UK inflation forecast, predicting that price rises will return to the Bank of England's 2% target by mid-2027 — sooner than previously anticipated. The improved outlook comes as the global economic body acknowledged that the worldwide economic impact of the Middle East conflict has been "better than feared", with the interim US-Iran peace deal helping to ease global oil prices.[reference:0][reference:1]

In its latest World Economic Outlook update, the IMF indicated a significant easing of price rises across the UK over the next year. In May, the organisation had previously indicated that inflation would only drop back to the target rate by the end of 2027. The new forecast brings that timeline forward by approximately six months, offering a more optimistic picture for British households and businesses grappling with the cost-of-living crisis.[reference:2][reference:3]

UK Inflation Data: May 2026 Holds Steady at 2.8%

UK consumer price index (CPI) inflation was most recently recorded at 2.8% in May 2026, unchanged from April and holding at a 13-month low.[reference:4] According to the Office for National Statistics (ONS), on a monthly basis, CPI rose by 0.2% in May 2026, the same rate as in May 2025.[reference:5] The main upward movement came from transport, with airfares, vehicle taxes, and petrol prices all pushing up inflation, though lower food prices helped offset these increases.[reference:6]

While inflation is widely expected to increase in the coming months, the IMF's latest projections suggest that any uptick will be shallower and shorter-lived than previously feared. The Bank of England most recently predicted that inflation could pick up to slightly above 3.25% later this year — significantly lower than the 3.6% to 3.7% peak projected in April under its more pessimistic scenarios.[reference:7][reference:8]

How the US-Iran Peace Deal Tempered Inflation

Inflation projections in the UK have been somewhat tempered by a recent interim peace deal between the US and Iran, which has contributed to easing oil prices.[reference:9] The agreement, signed in late June 2026, included a US Treasury general licence allowing the sale of crude oil and petrochemical products of Iranian origin through August 21, helping to bring more supply to global markets.[reference:10]

Under the interim US-Iran agreement, the US Treasury issued a June 22 general licence to permit the sale of Iranian oil, providing a 60-day window for Tehran to sell its oil without being subject to punitive measures.[reference:11] This move helped push oil prices back down to pre-war levels, with traders amassing large short positions in oil futures betting that prices would fall further.[reference:12]

The Bank of England now believes inflation will top out at around 3.25% in the final quarter of 2026 — well below the worst-case scenarios that had been set out at previous meetings.[reference:13] Governor Andrew Bailey has described the current approach as an "active hold" on interest rates, which he views as an effective tightening compared with market expectations of cuts before the conflict.[reference:14]

However, the peace remains fragile. On July 8, 2026, US President Donald Trump declared that the ceasefire with Iran was "over" following Iranian strikes, causing oil prices to surge more than 5%.[reference:15] Brent crude jumped $3.94 to $78.10 a barrel, while US benchmark crude surged $3.60 to $74.04 a barrel.[reference:16] This development underscores the persistent risks to the inflation outlook.

IMF Global Inflation and Growth Forecasts

While the UK outlook has improved, the IMF said its global price inflation forecasts for both 2026 and 2027 were still slightly higher than its outlook report in April. Global price inflation is set to rise to 4.7% in 2026 from 4.1% in 2025 on the back of higher food and energy prices, the IMF said. It predicted that this will then cool to 3.9% in 2027. However, the predictions are still 0.3 percentage points higher for 2026 and 0.2% higher for 2027 compared with its earlier forecasts.[reference:17][reference:18]

The IMF described the global economy as being shaped by two opposing forces — a negative supply shock from the Middle East conflict and a positive technology shock driven by rapid advances in artificial intelligence (AI).[reference:19][reference:20] While the war-induced negative shock on commodity prices, inflation expectations, and financial conditions has remained relatively limited, the IMF cautioned that the fallout from higher energy prices and supply-chain disruptions is still to fully play out.[reference:21]

Overall, the global economy is expected to grow by 3% in 2026, down slightly from a previous forecast of 3.1%. But this is expected to improve to 3.4% in 2027, up from a previous forecast of 3.2%.[reference:22] Global trade growth is projected to slow to 3.5% in 2026 from 5% in 2025, before recovering to 4.3% in 2027.[reference:23]

The IMF increased its 2026 headline inflation projection by 0.3 percentage points to 4.7% from April, while forecasting a decline to 3.9% next year. Energy prices are now 25% higher than before the war started on February 28, 2026, and will remain elevated, according to the fund.[reference:24] The forecast assumes the Strait of Hormuz will begin reopening in mid-July, returning to pre-war conditions by March 2027.[reference:25]

UK Economic Growth: Only G7 Country to Receive Upgrade

The IMF maintained its predictions for UK economic growth made in May. The UK economy is set to grow by 1% in 2026 — 0.2 percentage points stronger than the IMF's previous outlook report in April.[reference:26] This makes the UK the third fastest-growing economy in the G7 in 2026, behind the US (2.3%) and oil-exporting Canada (1.1%).[reference:27]

Chancellor Rachel Reeves welcomed the forecasts, stating: "The UK is the only G7 country where the growth forecast this year has been upgraded by the IMF. This shows we have the right economic plan to build a stronger and more secure economy."[reference:28] She added that the government's choices mean the economy is in a better position to deal with the costs of the war in Iran while kickstarting long-term growth by focusing on three big priorities: boosting AI, regional growth, and strengthening trade with the EU.[reference:29]

The IMF's growth forecast for the UK in 2027 is unchanged at 1.3%, as inflation falls back towards the government's 2% target by the middle of 2027.[reference:30] The modest upgrade is the latest hint that the incoming prime minister, Andy Burnham, may inherit an economy less battered by the Middle East conflict than previously feared.[reference:31]

However, critics note that Britain — as a net importer of energy — remains more exposed than other major economies to the impact of the Iran war, which has pushed up oil and gas prices.[reference:32] The US, by contrast, is a net energy exporter and is also being buoyed by a tech boom, making it much less exposed to the Iran war shock.[reference:33]

Bank of England Holds Interest Rates at 3.75%

The Bank of England kept interest rates on hold at 3.75% in its June 2026 meeting, judging it would be premature to raise rates given the unclear strength of increased inflation pressures. The Monetary Policy Committee voted 7-2 to keep rates on hold, with external member Megan Greene joining Chief Economist Huw Pill in calling for a quarter-point rate rise.[reference:34]

Most other MPC members appeared little closer to raising rates, broadly sticking with what Governor Andrew Bailey has called an "active hold". The Bank of England's approach contrasts with those of the European Central Bank and Bank of Japan — which have both raised rates in the past week — and projections from the US Federal Reserve, which showed policymakers expected rates to rise later this year.[reference:35]

In the run-up to the Bank of England's June meeting, the tentative truce between the US and Iran promised to reopen the Strait of Hormuz and lower oil prices — a boon for Britain if the deal sticks, as it relies heavily on imported natural gas. However, the Bank of England said it was too soon to declare the inflation threat over.[reference:36]

"Whatever happens in the future, the higher energy prices of the past four months means there's already some inflationary pressure in the pipeline," Andrew Bailey said in a statement alongside the decision.[reference:37]

The central bank was also marginally more upbeat on growth, estimating the economy is expanding at an underlying rate of 0.2% a quarter, up from 0.1% in its last set of forecasts despite a small fall in output in April.[reference:38]

Risks to the Outlook: Renewed Middle East Conflict Looms Large

In its report, the IMF struck a cautious note despite the improved forecasts: "The global economy as a whole has, so far, weathered the shock from the war better than feared. Risks to the outlook are more balanced than in April but still tilted to the downside."[reference:39]

The IMF specifically warned: "The possibility of renewed Middle East conflict looms large and could extend commodity price volatility, further threaten supply chains, raise prices, and weigh on financial conditions."[reference:40]

At a press conference after the update, Petya Koeva Brooks, deputy director in the IMF's research department, said the risks to the global outlook were "tilted to the downside" and noted the flaring up of tensions in the Middle East again after President Trump said the ceasefire was over.[reference:41] She stated: "Developments overnight illustrate the uncertainty and risks that surround the outlook. We're going to be monitoring developments very closely."[reference:42]

Deniz Igan, chief of the IMF Research Department's World Economic Studies division, said the global economy showed more resilience than expected in April, despite the war's impact and the Strait of Hormuz closure. The release of strategic oil reserves and commercial inventories, combined with rising energy efficiency, helped offset supply shortages.[reference:43] However, she warned that a collapse of the peace deal and renewed fighting could pose significant risks, as countries have largely depleted their reserves.[reference:44]

"A renewed conflict in the region is going to catch the global economy in a worse position than it was the first time," Igan told Reuters.[reference:45]

The Middle East and Central Asia region, hardest hit by the war, saw its growth forecast cut by 1.2 percentage points to 0.7% from the April forecast, although the IMF also raised its 2027 forecast by 1.9 percentage points to 6.5%.[reference:46]

Global Growth Projections by Region

The IMF's July 2026 World Economic Outlook update provided the following regional growth projections:

United States: 2.3% growth in 2026 and 2.2% in 2027, with activity supported by fiscal policy, accommodative financial conditions, and continued technology-related business investment.[reference:47]
Euro area: 0.9% growth in 2026 and 1.2% in 2027, reflecting a sizable negative carryover from the first quarter.[reference:48]
Japan: 0.6% growth in 2026 and 0.7% in 2027.[reference:49]
China: 4.6% growth in 2026, up from the April forecast of 4.4%, with 2027 growth projected at 4.1%.[reference:50]
India: 6.4% growth in 2026, with the IMF raising its 2027 forecast to 6.7%.[reference:51]

Political Reactions to the IMF Forecast

Chancellor Rachel Reeves welcomed the IMF forecasts as validation of the government's economic strategy. She said: "Our choices mean the economy is in a better position to deal with the costs of the war in Iran while kickstarting long-term growth by focusing on our three big choices – boosting AI, regional growth and strengthening trade with the EU."[reference:52]

However, critics have pointed out that while the UK did enjoy stronger growth than other G7 countries in the first quarter of 2026, it has not led the pack in any other quarter since Labour came to power.[reference:53] The IMF's latest projections suggest that the relatively strong performance at the start of 2026 is not expected to extend over the rest of the year.[reference:54]

Tory shadow chancellor Sir Mel Stride said: "The IMF's forecast shows growth slowing — yet another reminder that this Labour government is out of its depth. With more taxes and borrowing on the horizon under Burnham, Labour look set to double down on all of the mistakes they have already made."[reference:55]

Many businesses have also expressed concern that far from boosting growth, Labour's tax hikes, workers' rights policies, and minimum wage increases are crushing the private sector.[reference:56]

What This Means for UK Households and Businesses

For UK households, the improved inflation outlook offers some relief after years of rising prices. Inflation has exceeded the Bank of England's 2% target for most of the past five years due to a series of upward shocks since the Covid-19 pandemic, most notably Russia's 2022 invasion of Ukraine that lifted British inflation above 11%.[reference:57] The rising cost of living has been a key factor behind many Britons' dissatisfaction with mainstream politicians.[reference:58]

The Bank of England's decision to hold rates at 3.75% means mortgage holders are unlikely to see immediate increases in their monthly payments. The hope is that inflation will start to drop in 2027, freeing up the bank to cut rates, allowing mortgage lenders to offer cheaper home loans.[reference:59]

For businesses, the more stable inflation outlook reduces uncertainty around input costs and pricing strategies. However, the IMF's warning about potential renewed conflict in the Middle East serves as a reminder that the outlook remains fragile. Businesses with exposure to energy costs or global supply chains should remain vigilant and consider contingency planning.[reference:60]

IMF's Warning on Fiscal Policy

The IMF's report also contained a warning to countries about using "fiscal tools" to respond to higher energy prices. The fund advised: "Energy-related fiscal support, especially price distorting measures, should be removed as the energy shock abates so as to preserve fiscal buffers. Fiscal policy should avoid broad-based subsidies, tax cuts, and price controls, which are typically poorly targeted, fiscally costly, and politically difficult to unwind."[reference:61]

This advice may have implications for the UK government's approach to energy policy and household support measures as the inflation outlook continues to evolve.

Conclusion

The IMF's upgraded inflation forecast for the UK represents a significant positive development for the British economy. The combination of the interim US-Iran peace deal, easing oil prices, and the resilience of the global economy has created a more favourable environment than many had feared just months ago.

However, significant risks remain. The fragile nature of the US-Iran truce was demonstrated on July 8, 2026, when President Trump declared the ceasefire "over" following Iranian strikes, causing oil prices to surge more than 5%.[reference:62] The IMF has made clear that the possibility of renewed Middle East conflict "looms large" and could quickly reverse the progress made on inflation.[reference:63]

For now, the UK can take comfort in being the only G7 country to receive a growth upgrade for 2026, positioning it as the third fastest-growing economy in the group. As Chancellor Rachel Reeves noted, this suggests the government's economic plan is on the right track.[reference:64]

The coming months will be crucial in determining whether this optimistic outlook can be sustained, or whether renewed geopolitical tensions will once again unsettle the global economy and push inflation higher.[reference:65]

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