LONDON, March 3 - British finance minister Rachel Reeves is set to deliver a restrained update to the budget on Tuesday, sticking closely to earlier commitments to repair the public finances while navigating heightened investor anxiety linked to the conflict in the Middle East.
Reeves will publish updated economic and borrowing projections prepared by Britain’s fiscal watchdog, the Office for Budget Responsibility. Officials and market watchers expect her to avoid announcing fresh spending plans that could unsettle bond investors already alarmed by new inflation risks after recent military actions in the region.
Prime Minister Keir Starmer suffered a defeat in a parliamentary by-election last week, an electoral setback that has intensified calls from some quarters for increased public spending. Despite that pressure, Reeves has signalled that substantive fiscal changes will be reserved for her comprehensive budget statements in the autumn, and she has pledged to provide employers with stability as part of a broader effort to accelerate economic growth.
The timing of the update follows a sharp market reaction on Monday when global energy prices and government bond yields rose after strikes by the United States and Israel on Iran, and subsequent Iranian retaliation. That sudden movement in markets is likely to reinforce Reeves’ inclination to keep the Spring Forecast subdued rather than introduce measures that might raise borrowing costs.
Advance excerpts of Reeves’ remarks released by the finance ministry underscore her twin themes of fiscal stability and targeted infrastructure investment. She was due to tell audiences that the government has the right economic plan for the country in a world that has become yet more uncertain, according to those excerpts.
Market analysts say a low-key approach would be consistent with the heightened sensitivity among investors over the last 48 hours. Ken Egan, director of European sovereign credit at Kroll Bond Rating Agency, said Reeves is likely to try to keep the Spring Forecast as restrained as possible given the market’s recent volatility.
Such restraint would contrast with Reeves’ three prior fiscal events, during which she raised the overall tax burden to levels not seen since shortly after World War Two. At the time of her last full budget in November, the government’s fiscal headroom against its main target was estimated at almost 22 billion pounds - roughly $30 billion - equivalent to a narrow 0.6% of annual economic output.
Some analysts believe she may now have a little more latitude and expect the government to reduce the planned amount of debt it sells in the coming financial year. However, much of that apparent breathing room has resulted from a fall in borrowing costs since November - a gain that could evaporate quickly if prolonged increases in fuel prices follow any sustained escalation of the conflict in the Middle East.
One particular vulnerability stems from the structure of the government’s debt. Around a quarter of British government bonds are linked to inflation, a larger share than in many comparable economies. That profile leaves the public finances exposed to the risk of higher debt servicing costs if inflation moves up.
Reflecting that sensitivity, British two-year gilt yields jumped on Monday by their largest single-day amount since May 2025.
The OBR is also expected to revise down its growth projection for this year and may highlight the potential fiscal consequences if the recent decline in net migration persists in future years. Another challenge for the fiscal outlook is the possibility the OBR raises its unemployment forecasts, a move that could follow the government’s recent decisions that increased costs for employers.
Henry Cook, senior economist at MUFG Bank, noted that political pressure could mount for Reeves to use fiscal measures to aid voters - for example by abandoning plans to end a pandemic-era reduction in fuel duty. Even so, Cook and other observers expect Reeves to prioritise market confidence and act cautiously for now.
Summary
Rachel Reeves is expected to present a cautious Spring fiscal update anchored on OBR forecasts and a commitment to fiscal stability. Market turmoil caused by recent strikes and reprisals in the Middle East, which pushed up energy prices and gilt yields, is likely to constrain any new spending announcements. The OBR may cut growth forecasts, note the implications of falling net migration, and possibly raise unemployment projections, all of which would affect the public finances.
Key points
- Reeves will deliver updated fiscal forecasts from the OBR and is expected to avoid surprise spending measures that could unsettle bond investors - impacting sovereign debt markets and fixed-income investors.
- Recent market moves - a jump in energy prices and the largest single-day rise in two-year gilt yields since May 2025 - increase the risk that borrowing costs rise, with particular relevance for inflation-linked gilts and government debt management.
- The OBR is likely to lower growth projections and may flag risks to the public finances from falling net migration and potential increases in unemployment - factors relevant to labour markets and public service budgets.
Risks and uncertainties
- Prolonged higher fuel prices from continued Middle East conflict could erode recent reductions in borrowing costs and raise public debt servicing expenses - affecting the government bond market and inflation-sensitive debt instruments.
- A sustained fall in net migration could weaken the fiscal outlook over time if highlighted by the OBR, with implications for public services and long-term growth projections.
- Higher unemployment forecasts from the OBR, possibly linked to recent employer cost increases, would add pressure to the public finances and influence labour market dynamics.