£76 billion a year spending pressures putting UK on course for a German-sized state, think tank says

An ageing population and more expensive healthcare are set to increase public spending by £76 billion a year by the end of the decade, and a new approach will be needed to manage these extra costs as previous approaches of shrinking defence spending and raising National Insurance are likely to run out of road, according to new Resolution Foundation research published today.

The report examines the fiscal pressures that Governments will face during the 2020s, and how the UK has addressed such pressures in the past via changes to the size and shape of the state. It is the 14^th report for The “Economy 2030 Inquiry”, a collaboration with the LSE, funded by Nuffield Foundation.

It also notes that demographic change – from both an ageing society and the retirement of the baby boomer generation – will drive much of the £24 billion a year increase in spending on the State Pension between now and 2030.

Combined with rising healthcare costs – including from new treatments and higher rates of ill health – demographic change is also set to increase healthcare spending by around £52 billion a year by the end of the decade.

Higher spending on pensions and health could push the size of the UK state to 44 per cent of GDP by 2030, approaching the size of Germany’s pre-Covid state (45 per cent of GDP).

The report adds that the UK also faces a fresh spending pressure during the 2020s from its net zero transition, where additional public investment required may cost around £14 billion a year by 2030.

The fiscal impact of the net zero transition will also be seen in lost tax revenues, says the report.

It finds that if adoption of Battery Electric Vehicles takes place as quickly in the UK as it has done in Norway since 2018, tax revenues from fuel duty from cars alone will fall by £8 billion by the end of the decade, almost twice as fast as figures implied by the Government’s targets for electric vehicle adoption by 2030.

Public spending pressures are not new to Britain, the authors say, noting that over the past seven decades combined spending on social security, health, and education have more than doubled – from 11 per cent of GDP in the mid-1950s to reach an expected 23 per cent in 2024-25.

In the past, the UK has partly navigated these pressures for a bigger welfare state by reducing other areas of public expenditure. Defence spending has shrunk from 8 to 2 per cent over this period, while major cuts to government investment have been common. But the size of the state has also expanded, from 38 per cent of GDP post-war to around 42 per cent today.

A larger state in recent decades has required taxes to rise too – from 28 per cent of GDP in 1993 to 36 per cent by 2026. Increases in National Insurance (NI) have taken centre stage, accounting for the entirety of rising taxes on income this century, and continuing the post-war pattern that has seen NI more than double since the war (from 3 to 7 per cent of GDP).

However, the report warns that repeating these strategies to manage the £76 billion fiscal headwind coming in the 2020s is either unwise, such as cutting investment spending at a time when the net zero transition must be accelerated; politically toxic, such as ending the NHS’ free at the point of use principle; or undesirable, such as further NI increases.

The Foundation notes that avoiding a period of weak growth and relative economic decline is crucial, with slow economic growth post-financial crisis having effectively reduced the UK’s current spending envelope by £200 billion a year relative to its pre-crisis growth path.

It adds that the pattern of further tax rises falling disproportionately on pay packets via National Insurance, as is the case with the recent Health and Social Care Levy, cannot be repeated. Governments overseeing a higher tax take should refocus on ensuring that tax is collected efficiently and fairly, including by exploring Britain’s booming, but under-taxed, level of household wealth, which has grown from three times national income in the early 1980s to almost eight times national income today.

Alex Beer, Welfare Programme Head at the Nuffield Foundation said: “This report highlights the increasing pressures on public spending over the coming decade. In response, policymakers must resist knee-jerk cuts to expenditure that might put pressure on other areas of public spending in the future.

“If people are to have long-term security when it comes to their healthcare and pensions, then we need a holistic approach to fiscal policy that recognises the interdependencies of different areas of public spending and their consequences.”