Oil price surge and bond market volatility constrain UK fiscal options

Rising international oil prices and a global sell-off in government bonds are creating significant fiscal constraints for the United Kingdom ahead of the upcoming budget. Treasury officials acknowledge that the sharp increase in energy costs has reduced the government’s flexibility to implement new economic measures. This development complicates the economic outlook presented by the Chancellor, John Healey, who has previously emphasised positive growth prospects. The current environment limits the scope for additional consumer support, particularly as policymakers prepare for the next quarterly energy price cap review in January.

Officials are currently assessing various strategies to assist households facing higher energy bills, although any resulting package is expected to be considerably smaller than the comprehensive subsidies introduced by former Prime Minister Liz Truss in 2022. The Treasury is mindful of the existing relief measures, such as the value added tax reduction on electricity bills implemented under Andy Burnham. Potential options under consideration include shifting green energy subsidies into general taxation, a method previously utilised by Rachel Reeves, or targeting assistance specifically at the most vulnerable households. However, some government figures remain sceptical about the effectiveness of such targeted approaches in mitigating the broader impact of rising costs.

The pressure on policymakers is exacerbated by the prospect of rising interest rates. Senior government figures are increasingly concerned that higher rates could increase mortgage costs, undermining the promise of financial breathing space for voters. The Bank of England, which held interest rates at 3.75% last week, has warned that the energy price cap could rise by as much as 24% in the new year. Chief Economist Clare Lombardelli stated that prolonged high energy prices increase the risk of indirect inflationary effects, potentially necessitating tighter monetary policy. This view was supported by Deputy Governor Sarah Breeden, who noted that larger and longer economic shocks are more likely to produce second-round effects requiring policy response.

These inflationary pressures are driving a global sell-off in government bonds, which raises borrowing costs for the UK and other economies. The yield on 10-year UK gilts rose to 5.39% on Thursday, approaching a 19-year high recorded earlier in the week. Higher interest rates increase the upfront cost of government investment and impact the Office for Budget Responsibility’s forecasts regarding compliance with Labour’s fiscal rules. Analysts suggest that recent yield increases have eroded more than half of the £24bn fiscal headroom established during the spring statement in March. While the Chancellor has promised to meet fiscal rules with a buffer, this margin is expected to be significantly lower than the initial figure, making large tax increases or spending cuts less likely as the budget is expected to remain narrowly focused.

The broader market context includes a wave of bond selling across major markets, driven by ongoing conflict in the Middle East and concerns over uncontrolled US government spending. Yields on 10-year US treasury bonds surged to 5.17%, the highest level since 2007. Some analysts also point to large-scale bond issuance by artificial intelligence firms as a factor undermining demand for treasuries. The combination of these factors creates a challenging environment for UK policymakers, who must balance the need for consumer support with the imperative to maintain fiscal stability and manage rising borrowing costs.