Rachel Reeves confronted with a £20bn setback due to the energy crisis

Middle East Conflict Threatens Rachel Reeves’ Fiscal Strategy

The ongoing turmoil in the Middle East is creating significant challenges for Rachel Reeves’ financial plans, with estimates suggesting a potential gap of up to £20 billion in her proposed spending. The current energy crisis is placing unprecedented strain on the UK’s public finances.

According to the Institute for Fiscal Studies (IFS), rising energy prices could force the Chancellor to allocate billions more in the coming year, undermining her intended tax and expenditure framework. If inflation surges due to escalating oil prices, the government may need to increase benefit payments to match the higher cost of living, potentially adding £2.5 billion to welfare spending alone.

Additionally, the IFS warns that mounting inflation will likely trigger calls for increased public sector wages, which could further inflate government spending by an estimated £4 billion next year.

These pressures come on top of existing demands from government departments to maintain their budgets’ real value. Since departmental budgets are set in cash terms, persistent inflation could erode their actual purchasing power by around £3 billion if not adjusted.

Experts caution that the financial fallout from the Middle East conflict could also drive up the government’s interest payments, with the IFS projecting an extra £10 billion in costs related to inflation-linked debt.

Altogether, these factors could leave Ms Reeves facing up to £20 billion in additional expenses, with only a portion of this offset by increased revenue from income tax and VAT.

Inflation: The Central Challenge

The primary risk to Ms Reeves’ fiscal plans is the unexpected spike in inflation resulting from the energy shock linked to the US-Iran conflict. The Bank of England has indicated that if oil prices reach $100 per barrel and gas prices continue to climb, inflation could hit 3.5% in the third quarter—well above the Bank’s 2% target.

This scenario would complicate the government’s approach to benefits, as payments for working-age individuals are typically adjusted based on September’s inflation rate. The IFS calculates that increasing these benefits by 3.5%—rather than the 2.1% currently assumed—would add £2.5 billion to next year’s welfare bill. A surge in the retail prices index could also mean up to £10 billion more in debt servicing costs.

Political Debate Over Energy Policy

Kemi Badenoch, leader of the Conservative Party, has called on Ms Reeves to eliminate green levies as a way to reduce energy bills, rather than relying on government borrowing to support consumers during this inflationary period. Ms Badenoch criticized previous responses to energy crises, such as the 2022 price cap introduced by Liz Truss, which was largely financed through borrowing.

The Conservatives have pledged to lower electricity bills by 20% by repealing the Climate Change Act, abolishing the carbon tax, and ending what they describe as excessive wind energy subsidies. They also plan to force a parliamentary vote on whether to approve new North Sea drilling licenses, which are currently blocked.

Long-Term Fiscal Concerns

Economists warn that the UK could be heading toward a prolonged debt crisis, as a growing share of tax revenue is required to service national debt. Nick Ridpath from the IFS notes that higher inflation will also impact public sector pay, which totaled approximately £288 billion last year. Each 1% increase in pay settlements is estimated to cost an additional £3 billion.

“Public sector pay represents a significant portion of government expenditure,” Ridpath explains. “Even modest increases in pay settlements can have a substantial effect on overall costs, potentially requiring budget top-ups or cuts elsewhere.” He adds that maintaining planned real-terms growth in departmental budgets would necessitate an extra £3 billion in 2026-27.

Tax Revenues and Fiscal Drag

While higher inflation may boost tax receipts—since income tax thresholds are frozen until the next decade—this will only partially offset increased spending. Martin Beck of WPI Strategy estimates that fiscal drag could generate an extra £8.6 billion annually if wage increases keep pace with inflation. However, if earnings do not rise accordingly, the benefit to tax receipts will be limited while spending pressures persist.

Jagjit Chadha from the University of Cambridge cautions that borrowing is not a sustainable solution. “If energy prices remain high, we’ll have to tighten our belts and reduce spending elsewhere to cover the costs,” he says. “The government cannot indefinitely shield the public from global market realities.”

Chadha also points out that debt servicing costs, already exceeding £100 billion per year, will remain a major challenge for the Chancellor unless significant steps are taken to reduce overall debt.

Despite these mounting pressures, the Chancellor has reaffirmed her commitment to maintaining strict spending rules.