Economy March 3, 2026

Reeves: UK fiscal headroom rises to 23.6 billion pounds for 2029/30

New Office for Budget Responsibility forecasts show a larger margin for meeting end-of-decade fiscal target, though market turbulence and energy price shifts create uncertainty

By Ajmal Hussain
Reeves: UK fiscal headroom rises to 23.6 billion pounds for 2029/30

Finance minister Rachel Reeves said the government’s margin for meeting its principal fiscal objective at the end of the decade has increased to 23.6 billion pounds for 2029/30, up from an almost 22 billion pound estimate in November. The Office for Budget Responsibility’s forecasts underpin the change, but they were compiled before a recent spike in borrowing costs related to geopolitical developments that have pushed up energy prices and could feed into inflation. Reeves noted that the projections incorporate spending commitments made since the last full budget.

Key Points

  • The Office for Budget Responsibility’s latest forecasts show tax revenues exceeding day-to-day spending by 23.6 billion pounds in 2029/30.
  • The revised fiscal headroom is larger than the almost 22 billion pound estimate given at the full budget announcement in November.
  • Forecasts were completed before recent market-driven increases in borrowing costs and energy prices; the OBR’s numbers do include spending commitments made since the last budget.

Finance minister Rachel Reeves said on Tuesday that Britain now has a larger buffer for achieving its primary fiscal goal at the end of the decade, citing updated forecasts from the Office for Budget Responsibility (OBR).

The OBR projects that expected tax receipts will exceed routine public spending by 23.6 billion pounds in the 2029/30 fiscal year, Reeves said in a budget update to parliament. That figure marks an increase from the almost 22 billion pounds of fiscal headroom the government reported at the time of its full budget statement in November.

Reeves was careful to note the timing and scope of the OBR’s work. The forecasts were produced before a recent jump in borrowing costs in financial markets that followed conflict between the United States and Israel and Iran, a development that has coincided with rising energy costs and which the government says could drive higher inflation. Despite that market turbulence, the OBR’s numbers do reflect spending commitments that have been made since the November budget.

The minister presented the revised headroom figure as part of a routine update on the government’s fiscal position. The 23.6 billion pound margin represents the gap between forecast tax revenues and projected day-to-day public spending in 2029/30, according to Reeves’ remarks.

Reeves’ update reiterated how official forecasts are used to assess the government’s capacity to meet long-term fiscal targets. The OBR’s projection, as cited by the finance minister, provides the basis for the current estimate of available room to manoeuvre in meeting the decade-end objective.

Observers were also given the context of currency valuation included with the update - the statement used an exchange-rate reference of $1 = 0.7509 pounds.

While the revised headroom is larger than the November estimate, Reeves’ briefing acknowledged that the OBR’s work predates recent market shifts that have affected borrowing costs and energy prices, factors identified in the update as having the potential to influence inflationary pressure.

Risks

  • Recent surge in borrowing costs tied to geopolitical developments could change the fiscal outlook - this primarily affects government borrowing and financial markets.
  • Higher energy costs noted alongside market volatility may contribute to upward pressure on inflation, with implications for consumers and business operating costs.
  • The OBR forecasts underpinning the headroom estimate were produced before recent market moves, introducing uncertainty about whether the projected margin will hold under current conditions.

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