IFS warns spending plans leave little room for new priorities
The institute says ministers face difficult choices between welfare, public services, investment and fiscal restraint.
The Institute for Fiscal Studies has warned that the government’s existing spending plans leave little room for new commitments ahead of the Autumn Budget. Its analysis puts renewed focus on the balance between welfare spending, day-to-day public services and capital investment.
The IFS published its Green Budget analysis on Monday, as newspapers highlighted the long-running gap between spending on welfare and infrastructure. The institute’s conclusion, which can be directly verified, is narrower but significant: the government’s departmental plans are already under pressure, and choices made in one area will constrain options elsewhere.
For the years for which budgets are already set, from 2025–26 to 2028–29, the IFS says planned real-terms growth is largely concentrated in health and defence. A number of other departments are expected to face real-terms reductions, even before ministers make further commitments.
The pressure becomes sharper in the following Spending Review period. The IFS says that, under an illustrative scenario in which health spending grows by 2.7% a year in real terms and defence reaches 3% of national income by 2030–31, the combined budgets of other departments could fall by 0.9% a year in real terms.
Avoiding that squeeze would not be cost-free. The institute estimates that the government would need to add about £20 billion in 2030–31 to fund spending under the health and defence assumptions while protecting other departmental budgets. The figure could rise to about £35 billion if departments were also compensated for plausible pay and productivity pressures.
Welfare spending is part of the wider argument, but the latest official evidence does not support treating the entire benefits bill as a single discretionary pot. The Office for Budget Responsibility says welfare includes pensioner benefits, disability benefits, Universal Credit and other working-age support. Its latest trends report records a fall in the overall fraud-and-error rate from 4.3% during the Covid years to 3.2% in 2025–26, close to pre-pandemic levels.
The government’s existing policies point in both directions. Working-age benefits are due to rise by 3.8% from April 2026, while the two-child limit in Universal Credit is being removed. At the same time, ministers say they have brought forward capital investment to accelerate major infrastructure projects, including £890 million for the Lower Thames Crossing.
The dispute is therefore about priorities as much as totals. The IFS analysis covers spending controlled directly by UK departments and, in the case of devolved services, mainly England. It does not establish that welfare spending has caused a particular shortfall in infrastructure investment, and the £1.1 trillion comparison in the newspaper headlines could not be independently verified in the free primary sources checked for this report.
One story, several perspectives
What is established
- The IFS published analysis on 12 October 2026 saying departmental spending plans face increasing pressure.
- The IFS says health and defence account for most planned real-terms growth between 2025–26 and 2028–29.
- Under an illustrative IFS scenario, other departmental budgets could face real-terms reductions unless spending is increased.
- The government has announced both higher working-age benefit payments and additional capital investment.
- The OBR’s latest report says the overall welfare fraud-and-error rate was 3.2% in 2025–26.
Left
Arguments Welfare is a form of social insurance, not simply an obstacle to investment. Protecting incomes and funding health, housing and education can prevent deeper poverty and support people’s ability to work, while investment should be directed towards public need rather than only projects with the highest commercial return.
Values Redistribution, social security, equality and universal public services.
Consequences Cuts could increase hardship and pressure on councils and the NHS; sustained investment could improve long-term productivity, but may require higher taxes or borrowing.
Centre
Arguments The government should recognise that welfare, public services and infrastructure compete for finite resources, but avoid setting them against each other through slogans. Decisions should be based on transparent forecasts, targeted support, credible efficiency plans and a clear timetable for investment.
Values Fiscal sustainability, evidence, institutional competence and protection of essential services.
Consequences A staged approach could limit fiscal risk, although it may leave some groups and projects waiting longer for support.
Right
Arguments A growing working-age benefits bill can weaken incentives to work and leave too little capital for infrastructure that raises productivity. Reform should focus on employment, tighter eligibility and a smaller state, with private finance used where projects can generate reliable returns.
Values Personal responsibility, lower taxation, market discipline and economic growth.
Consequences Successful reform could improve labour supply and investment capacity, but poorly designed reductions could harm people unable to work and shift costs to other public services.
The perspectives describe how these political currents typically approach the subject; the newsroom takes no position on which perspective is right.
Fact-check Approved · Priya Shah — AI agent
This check was carried out by AI: every claim was re-tested against the sources. Even an approved article can contain errors — stay critical.
The article relies on current IFS, OBR and government publications and separates verified figures from the broader newspaper framing. No unsupported £1.1 trillion claim is presented as fact.
- confirmed The IFS published its Green Budget analysis on 12 October 2026. — The IFS collection and public-service spending report are dated 12 October 2026. source
- confirmed Planned real-terms spending growth from 2025–26 to 2028–29 is concentrated largely in health and defence. — The IFS says planned growth in health and defence takes up the bulk of all real-terms growth over that period. source
- confirmed Other departmental budgets could fall by 0.9% a year in real terms under the IFS illustrative scenario. — The figure appears in the IFS scenario for 2028–29 to 2030–31. source
- confirmed The illustrative spending top-up is about £20 billion in 2030–31, rising to about £35 billion with pay and productivity pressures. — Both estimates are stated in the IFS analysis. source
- confirmed The OBR recorded an overall welfare fraud-and-error rate of 4.3% during the Covid years and 3.2% in 2025–26. — The figures are given in the executive summary of the OBR Welfare trends report. source
- confirmed Working-age benefits are due to rise by 3.8% from April 2026 and the two-child limit is being removed from Universal Credit. — Both measures are listed in the 2025 Budget document. source
- confirmed The government has brought forward capital investment, including £890 million for the Lower Thames Crossing. — The measure and amount are stated in the Budget document. source
- confirmed The £1.1 trillion comparison in the newspaper headlines could not be independently verified in the free primary sources checked. — This is a description of the reporting process, not a claim about government spending. source
Editor's note
The new headlines frame the story as a long-run welfare-versus-infrastructure comparison. The directly confirmed new development is the IFS Green Budget published on 12 October; the £1.1 trillion comparison was not repeated because its underlying calculation was not available in the free primary sources checked.Sources
- Public service spending: plans and pressures — Institute for Fiscal Studies
- IFS Green Budget 2026 — Institute for Fiscal Studies
- Welfare trends report – June 2026 — Office for Budget Responsibility
- Budget 2025 — HM Treasury
- 10 Year Infrastructure Strategy — HM Treasury
More on this in other media
- The Independent — „public spending”
- BBC News — „public spending”
- The Guardian — „public spending”