UK Chancellor John Healey is facing mounting pressure to deliver a credible financial roadmap ahead of his upcoming October 28 budget. The Institute for Fiscal Studies (IFS) warned on October 12 that the government must address a £35bn spending pressure gap or risk drafting a budget that amounts to a “work of fiction.”
The prominent economic think tank released its pre-budget green report, highlighting how ongoing international conflicts, including the war in the Middle East, have stoked global inflation and driven up government borrowing costs. According to the IFS, these inflationary shocks threaten to severely erode the real-terms value of departmental spending limits by the end of the decade.
The Inflation Shock and Public Services
Higher inflation places the Treasury in a difficult dilemma. If left unaddressed, the government’s inherited spending plans would effectively force deep, real-terms cuts onto public services, damaging both their quality and quantity. Alternatively, topping up departmental budgets to protect public services while fulfilling a pledge to raise defense spending to 3% of GDP by 2030 requires substantial financial compensation.
The IFS calculates that covering these combined pressures would necessitate approximately £35bn in tax rises or benefit cuts. IFS director Helen Miller emphasized that ignoring these realities is not a viable strategy for the chancellor.
“Simply pencilling in implicit cuts that he has no intention of delivering would make the budget a work of fiction,” said Helen Miller, director of the IFS.
Miller added that a steady-as-she-goes approach, which delays critical funding decisions until next year’s spending review, would undermine financial market confidence and compromise the credibility of the government’s fiscal rules.
Headroom Pressures and Government Borrowing
Attention ahead of the budget has largely focused on the chancellor’s fiscal headroom-the safety buffer designed to meet Labour’s rule of balancing day-to-day public spending with revenues by 2029-30. Recent turbulence in the bond market and climbing debt interest costs are expected to add roughly £10bn to government borrowing by the end of the decade.
While higher inflation will simultaneously boost tax revenues and soften the net blow to the exchequer, experts predict the official headroom buffer could shrink from the £24bn forecast by former chancellor Rachel Reeves at the spring statement down to approximately £20bn.
However, the IFS argues that focusing exclusively on the headroom buffer misses the larger picture. The more pressing challenge lies in whether the government’s public service spending envelopes are realistic enough to survive contact with soaring inflation.
Treasury Response
Responding to the report, a Treasury spokesperson defended the government’s broader economic approach:
- The chancellor remains fully focused on boosting business growth and supporting household living standards.
- All policies are underpinned by strict fiscal discipline and a commitment to meeting fiscal rules with a buffer against global uncertainty.
- The independent Office for Budget Responsibility (OBR) will release updated forecasts alongside the budget announcement on October 28.
As Chancellor Healey prepares to outline his plans, financial markets and international partners will be closely watching to see whether the Treasury delivers transparent, fully costed spending envelopes or relies on deferred targets that leave public finances vulnerable.
