UK 2027 Growth Forecast Slashed Despite Healey's Budget Measures 2026

The UK growth forecast for 2027 has been sharply downgraded by the Office for Budget Responsibility (OBR), despite new Chancellor John Healey’s budget measures aimed at cushioning households and businesses from soaring energy costs. The independent forecaster cut its estimate for next year from 1.5% to just 1%, warning that inflation is poised to reach close to 4% as the war in the Middle East drags down growth and triggers a fresh cost of living crisis.

The downgrade came as Healey announced his first budget, seeking to provide “breathing space” through temporary energy support and a rise in bank taxes. But the OBR’s report painted a stark picture: the UK’s early resilience to the conflict is fizzling out, and the public finances are under mounting strain.

Why the OBR Slashed the 2027 Growth Forecast

The OBR’s decision to slash the 2027 growth forecast reflects a perfect storm of external shocks and domestic vulnerabilities. The war in the Middle East, referred to by Healey as “Donald Trump’s war in the Gulf,” has pushed up borrowing costs for governments worldwide, with the UK exchequer spending £14bn more on debt interest alone.

Although growth this year was upgraded from 1.1% to 1.2% thanks to unexpectedly resilient performance fuelled by AI investment, the watchdog warned that this resilience is temporary. The conflict’s financial market fallout is now feeding through to higher inflation and weaker consumer spending, forcing the OBR to revise down its 2027 estimate.

Healey acknowledged the uncertainty, saying he would allow a hit to his buffer against the government’s fiscal rules while leaving £15bn of headroom. He also announced a temporary rise in tax on banks to fund his package of energy support.

What This Means for Households and Businesses

For households, the downgrade signals that the cost of living crisis is far from over. With inflation expected to approach 4%, real incomes are set to remain under pressure, and the OBR has also downgraded its forecasts for living standards.

Businesses, particularly energy-intensive manufacturers, face continued uncertainty over energy costs. Healey’s “breathing space” policies are designed to help, but the OBR’s figures suggest they may not be enough to offset the wider economic drag.

• Growth downgrade: 2027 GDP growth forecast cut from 1.5% to 1%.
• Inflation warning: Expected to reach close to 4% as war fallout persists.
• Debt interest surge: £14bn extra spending on debt interest due to global borrowing costs.
• Fiscal buffer hit: Chancellor allows a hit to his buffer against fiscal rules.
• Bank tax rise: Temporary increase to fund energy support package.

Key Economic Indicators at a Glance

The table below summarises the OBR’s revised forecasts and the measures announced in the budget, showing how the outlook has changed for 2027 compared with previous estimates.

Political and Market Reaction

The downgrade is a political headache for Healey, who is trying to balance fiscal discipline with support for struggling households. Critics argue that the bank tax rise could dampen lending and investment, while supporters say it is a fair way to fund energy support.

Financial markets reacted cautiously, with gilt yields remaining elevated as investors digest the combination of higher borrowing and weaker growth. The OBR’s warning that inflation could near 4% will also complicate the Bank of England’s rate decisions in the coming months.

Globally, the UK is not alone in facing downgrades. The IMF recently downgraded Australia’s 2027 GDP growth forecast to 1.6%, highlighting how the Middle East conflict is affecting economies worldwide. Similarly, in the corporate sector, Vistry’s profit forecast was slashed as losses ballooned to £661m, underscoring the challenging environment for UK businesses.

What to Watch Next

Attention now turns to the Bank of England’s next move on interest rates and whether the government can stabilise the public finances without further damaging growth. The OBR’s forecasts will be scrutinised again in the autumn statement, when Healey may need to announce further measures.

For now, the chancellor’s room for manoeuvre is limited. The £15bn headroom he left himself could be eroded quickly if inflation stays high and growth disappoints. As energy subsidies are phased out, households may face another shock unless global energy prices fall.

Businesses will be watching closely for signs of sustained recovery. Consumer confidence remains fragile, though some retailers like Tesco have seen profit forecasts rise as shoppers remain resilient. Still, the overall picture is one of subdued growth and persistent inflation.

Against this backdrop, the government’s energy support package and bank tax rise are short-term fixes rather than long-term solutions. The OBR’s downgrade serves as a stark reminder that the UK economy remains vulnerable to global shocks. The background to this story is set out in John Healey Budget 2025: Breathing Space for Consumers. A related thread runs through Can John Healey's First Budget Ease the UK Cost of Living Crisis. Earlier coverage in John Healey Warns of Tough First Budget Impact on UK Economy shows how the argument developed.

For a deeper look at how fiscal policy is evolving, see our analysis of Andy Burnham’s first week, which focused on cost of living measures and optimism. And as the energy debate intensifies, the decision to slash heat pump subsidies to fund the UK defence budget shows the tough trade-offs facing policymakers. A closer look at the same subject appears in IMF Downgrades Australia's 2027 GDP Growth Forecast to 1.6%. Anyone following the wider picture can start with Next UN Chief May Downgrade Climate Action, Experts Fear. The same theme surfaces in UK MPs Defend OBR Against Critics: Stop Shooting the Messenger, which takes a different angle.

Investors and households alike will need to navigate a more uncertain landscape. Keeping informed is essential—our roundup of top business books to read this month for growth offers practical insights for adapting to volatile times. Context on how this played out before sits in Vistry Profit Forecast Slashed as Losses Balloon to £661m. A companion piece, UK Bank Shares Drop as John Healey Plans Budget Tax Raid, approaches the same subject from another angle.