Middle East Tensions Threaten UK Budget Amid Fears of £7 Billion Black Hole

Chancellor John Healey faces a potential £7 billion deficit if Middle East energy supplies remain disrupted, according to new analysis by EY. The accounting firm's report indicates that the ongoing conflict, exacerbated by actions attributed to Donald Trump's administration, could worsen the Chancellor's borrowing challenges and impact his ability to fund planned initiatives.

EY's findings highlight the critical nature of the Strait of Hormuz's accessibility for oil and gas shipments. The report suggests that a prolonged closure of this vital waterway could further strain public finances, potentially causing the government to miss its fiscal rules, which aim for falling borrowing and debt. In a worst-case scenario, with energy supplies severely limited into next year, EY estimates that inflation could rise to 6 percent, economic growth would weaken, unemployment would increase, borrowing costs would escalate, and share prices would fall. This combined effect could shrink the UK's financial 'headroom'—a buffer against fiscal rule breaches—by an additional £18 billion.

Peter Arnold, EY's UK chief economist, stated that Britain's relatively small fiscal buffer leaves "very little margin for error." He added that even modest shifts in economic conditions can impact the fiscal position by billions, and a protracted Middle East conflict could eliminate the existing headroom entirely.

EY's analysis also indicates that Healey will find it challenging to secure the approximately £40 billion required for commitments to council house building, increased defense spending, social care, and unfreezing the tax-free personal allowance. This is in addition to the at least £12 billion needed for measures already announced, such as capping bus fares, reducing VAT on electricity bills, and providing business rates relief for the hospitality sector.

The report suggests that the Chancellor may be constrained from raising taxes such as income tax, corporation tax, employee national insurance, and VAT due to existing promises. While politically difficult, other taxes like fuel duty could be considered. However, the analysis points towards potential increases in capital gains tax, inheritance tax, and stamp duty, as well as windfall taxes on sectors like banking.

Chris Sanger, EY's UK tax policy lead, commented that the government might signal its broader ambitions rather than fully fund them in the upcoming Budget. He suggested that significant spending decisions could be postponed until the economic outlook clarifies or be funded by post-election tax rises. This approach, he noted, would limit immediate impacts on households and businesses but would postpone rather than resolve the underlying fiscal pressure.