ICAEW chart of the week: Spending Review 2025

My chart for ICAEW this week looks at the government’s priorities as expressed through departmental budgetary allocations over the next three years.

A bar chart showing the average annual real-term percentage increase in departmental spending over the three years to 2028/29.

Defence +3.8%. 
Security +3.7%. 
Business & Trade +3.0%. 
Health +2.7%. 
Local Government. +2.6% (central funding +1.1%, balance from local taxation). 
Justice +2.0%. 
Overall average increase +1.5%. 
Science +0.9%. 
Education +0.8%. 
Devolved administrations +0.7%. 
Energy & New Zero +0.7%. 
Home Office +0.5%. 
Cabinet Office +0.4%. 
DWP -0.2%. 
Transport -0.5%. 
Culture, Media & Sport -1.4%. 
HMRC -1.5%. 
Hm Treasury -1.9%. 
Agriculture & Rural Affairs -2.3%. 
Foreign & Development -8.3%. 
Asylum -13.1%. 

13 Jun 2025. Chart by Martin Wheatcroft. Design by Sunday. Source: HM Treasury, 'Spending Review 2025'.

The Spending Review 2025 establishes base operating budgets for government departments for the three financial years from 1 April 2026 (2026/27, 2027/28 and 2028/29) and base capital budgets for four financial years (extending to 2029/30).

Departmental budgets for the current financial year ending on 31 March 2026 (2025/26), total £648bn and are expected to rise to £678bn in 2026/27, £697bn in 2027/28, and £717bn in 2028/29, an increase of 10.6% over the three years or 3.4% a year. This is equivalent to an average increase of 1.5% a year in real terms after adjusting for inflation of 1.9% a year on average over the spending review period.

The totals can be analysed between operating or ‘day-to-day’ budgets of £517bn, £536bn, £552bn and £568bn in 2025/26, 2026/27, 2027/28 and 2028/29 respectively and capital budgets of £131bn, £143bn, £145bn and £149bn. These are real terms increases of 1.2% and 2.4% a year on average over three years. 

The capital budget in 2029/30 is £152bn, a cut in real terms that reduces the average annual increase in capital budgets over four years to 1.8% a year on average.

My chart this week highlights how the 1.5% average annual real increase over three years in total budgets (operating and capital) has been allocated across departments, starting with the Ministry of Defence, which leads the pack with an average increase in its budget of 3.8% a year, followed closely by the security services, with an average annual increase of 3.7%. This reflects the elevation of national defence and security to the top of the government’s priorities since the general election last year, even though this increase will only move defence and security spending from 2.3% of GDP currently to 2.6% of GDP by 2027, a long way off the proposed 3.5% of GDP new minimum to be discussed at the NATO summit.

Economic growth and the NHS are the next highest priorities for the government and so it is perhaps unsurprising that the Department of Business & Trade does well with an annual average increase of 3.0%, closely followed by the Department of Health & Social Care, which receives 2.7%. The latter is the biggest increase in cash terms, at £31bn in total or about £12bn more in 2028/29 after adjusting for inflation.

Local government finances are in a parlous state and so the government has pencilled in a 2.6% average annual increase in core budgets for local authorities in England over the next three years. However, it is only increasing central funding by 1.1% a year on average, implying the balance will need to be made by local taxation, principally council tax.

The Ministry of Justice has been awarded 2.0% a year on average as the government seeks to tackle significant backlogs in the courts, overcrowded prisons and significantly under-resourced probation services.

The Department of Science, Innovation and Technology has received a below average annual increase of 0.9% over the next three years, but this follows an almost 12% increase over the past two years as the government has sought to increase investment in research and development to boost economic growth.

Despite being a key priority for the government, the Department for Education has only received a 0.8% average annual increase, partly because of falling primary school rolls in line with a significant fall in the birth rate over the last decade.

The devolved administrations – Scotland (0.8%), Wales (0.7%) and Northern Ireland (0.5%) – are budgeted to receive an average of 0.7% a year over three years as a consequence of the Barnett formula that links UK national government spending in England to the block grants provided to each devolved administration, adjusted for relative changes in population among other factors.

The Cabinet Office is expected to receive just 0.4% on average reflecting the contribution that planned efficiency savings are expected to contribute to administrative budgets. This is also the reason for the 0.2% a year real-terms fall in the Department for Work and Pensions (DWP) budget as automation helps reduce the cost of administering the welfare system.

The budget of the Department for Transport is expected to fall by 0.5% a year overall, but this partly reflects a fall in spending on High Speed 2 as it comes closer to completion. If that is excluded, the department’s budget is expected to increase by 0.5% a year on average. The actual increase in spending should be even higher, as the budget is net of passenger revenues that are expected to grow at a faster rate over the next three years.

Extra money for housing was found within the spending review, but this wasn’t enough to stop the budget for the Department of Housing, Communities and Local Government from shrinking by an annual average of 0.6% a year as other activities are cut back, while the Department for Culture, Media & Sport (-1.4% a year on average) has also been asked to cut back its activities.

HMRC (-1.5% a year) and HM Treasury (-1.9% a year) see their budgets reduced significantly, with digitisation and efficiency savings expected to contribute significant sums.

The Department for Farming, Agriculture, and Rural Affairs (-2.3%) is also expected to see significant cuts over the next three years, as is the Foreign, Commonwealth and Development Office (-8.3%), although in the latter case that is principally driven by the decision to reduce overseas development assistance from 0.5% of GDP to 0.3% of GDP although some will come from back office savings.

Not shown in the chart are small and independent bodies and the government legal function, which are together expected to increase by 0.4% a year on average, although this comprise a -0.5% annual reduction in the former and a 5.3% average annual increase in the latter. The net changes after inflation are a fall of less than £0.1bn and an increase of just over £0.1bn respectively, which are rounding errors in the hundreds and hundreds of billions of pounds spent by government departments each year. 

ICAEW chart of the week: Pensioners on the rise

My chart for ICAEW this week highlights how the number of pensioners in the UK is expected to increase by 14% over the next 10 years. This will have major implications for the public finances.

Step chart. Starts with a projected UK population aged 66 or more in 2025 of 12,614,000 (21%), adds 2,677,000 over the next 10 years, then a reduction of 867,000 (7%) from the change in the state retirement age to equal a UK population aged 67 or more of 4,424,000 (+14%) in 2035.

31 Jan 2025. Chart by Martin Wheatcroft FCA. Source: ONS, 'Principal population projection (2022-based), Jan 2025'.

The Office for National Statistics (ONS) published its latest population projections for the UK on 28 January 2025. 

Extrapolated from the 2021 Census in England, Wales and Northern Ireland and the 2022 Census in Scotland, the ONS’s principal projection is for the UK population to increase by 5% over the next decade from a projected 69,868,000 in June 2025 to 73,426,000 in June 2035. This is on the basis of 132,000 more deaths than births in total over the next 10 years (6,979,000 versus 6,847,000) and net inward migration of 369,000 a year on average.

Our chart highlights how the number of pensioners is expected to increase by 14% over the next 10 years, from a projected 12,614,000 this summer to 14,424,000 in 2035, despite an increase in the state retirement age from 66 to 67. 

The main driver of this increase is an additional 2,677,000 people aged 66 or more, reflecting 8,522,000 people passing the age of 66 over the 10 years to June 2035, plus 28,000 from net inward migration (119,000 in and 91,000 out), less 5,873,000 deaths

This 21% increase is partially offset by a 7% reduction for the 867,000 66-year-olds who will still be waiting for their state pension in June 2035 as a result of the planned rise in the state retirement age from 66 to 67 between 2026 and 2028.

Over the same period the ONS is projecting a 7% fall in the number of children from 12,272,000 in June 2025 to 11,434,000 in June 2035, and a 6% increase in the size of the working age population from 44,982,000 to 47,569,000. The latter would have been a 4% increase if not for the statutory increase in the state pension age to 67.

The ONS stresses that its national population projections are not forecasts and do not attempt to predict potential changes in international migration in particular. It also notes that demographic assumptions for future fertility and mortality are based on observed demographic trends, which is no guarantee that these trends might not change in the future.

Despite those caveats, the projected increase in the number of pensioners is one of the more likely areas of the projections to turn into reality. This is because almost all of those future pensioners are alive today and already living in the country, while mortality rates tend to change gradually over time. 

A much more significant factor relates to the ONS’s long-term assumption for net inward migration of 340,000. While this is unlikely to affect the anticipated number of pensioners in a decade’s time, it will have a significant impact on the projected ratio between the number of pensioners and those of working age.

Either way, the projected rise in the number of pensioners compared with the size of the working-age population over the coming decade will have major implications for the public finances. 

Tax receipts will fall proportionately as retirees leave the workforce faster than new workers join. State pension payments will increase, even before taking account of the ratchet effect of the pension triple-lock on the amount payable to each pensioner. Health care and adult social care costs will rise substantially given how skewed these costs are to older generations. And pension credit, housing benefit and other welfare benefits that go to poorer pensioners are also likely to increase. 

Successive governments, including the current administration, have worked on the basis that they should be able to afford the higher costs of many more people living for longer in retirement through a combination of gradual rises in the state pension age (long hoped for but not delivered), higher levels of economic growth, and cuts in other areas of public spending such as the defence budget. 

With the number of pensioners increasing much faster than the government can raise the state pension age (given the decade or more advance notice that needs to be given), relatively low levels of economic growth even in more optimistic scenarios, calls for an increase in the defence budget and significant cost pressures affecting many other public services, the big question will be the extent to which taxes will have to go up even further over the next 10 years if the promises made by successive governments over the last century are to be kept.

Read more: ONS’s national population projections.

This chart was originally published by ICAEW.

ICAEW chart of the week: Receipts and spending by age

My chart this week looks at how receipts and spending vary by age, a key driver for public finances that new Chancellor Kwasi Kwarteng will need to factor into his fiscal plans.

Column chart - showing receipts by age group per person per month above the line and spending below the line.

0-9: £150 (receipts) - £550 (public services and interest), £290, (pensions and welfare), £270 (health and social care), £380 (education)

10-19: £210 - £620, £320, £110, £750

20-29: £1,150 - £440, £120, £160, £110

30-39: £1,930 - £430, £150, £180, £30

40-49: £2,200 - £430, £170, £200, £20

50-59: £1,960 - £450, £190, £300, £10

60-69: £1,240 - £480, £340, £370, -

70-79: £800 - £640, £1,170, £600, -

80+: £600 - £730, £1,400 - £1,270

Average: £1,220 - £510, £365, £310, £155

Kwasi Kwarteng’s first Budget will be an emergency one, not only setting out his plans for the financial year commencing on 1 April 2023, but also re-opening the budget for the current financial year. It will be dominated by the emergency support package for individuals and businesses already announced, alongside starting to deliver on Prime Minister Liz Truss’s commitments to cut taxes and ‘shrink the state’.

The new Chancellor is likely to find that cutting public spending is not going to be easy given the increasing financial commitments made by successive governments since the Second World War on education, pensions, health and social care, the areas that now dominate public spending. He supported adding to those commitments only a couple of years ago when then Prime Minister Boris Johnson decided to expand eligibility for social care, and former Chancellor Rishi Sunak re-committed to the ‘triple-lock’ that guarantees increases in the state pension every year.

As our chart this week illustrates, receipts and spending vary significantly across age groups, with spending on education higher on the young, who pay very little in taxes, and spending on pensions, health and social care much higher for older generations who contribute less than the average, especially after reaching retirement age. This contrasts with the profile for those of working age who pay the most into the system while on average taking the least out.

Derived from an analysis from the Office for Budget Responsibility’s fiscal risks and sustainability report published in July, the chart shows how – before the emergency Budget scheduled for 21 September – budgeted tax and other receipts for the current financial year 2022/23 are equivalent to £1,220 per person per month, based on forecast receipts of £988bn and a population of 67.5m. This is below budgeted public spending of £1,340 per person per month (£1,087bn/67.5m people/12 months), with the deficit of £120 per person per month (£99bn in total) funded by borrowing.

Average receipts per person per month by age group are estimated to be in the order of £150, £210, £1,150, £1,930, £2,200, £1,960, £1,240, £800 respectively for those aged 0-9, 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79 and 80+ respectively. These numbers include £115 per person per month of non-tax receipts spread evenly across everyone. 

Spending on public services and interest in the order of £510 per person per month, or £550, £620, £440, £430, £430, £450, £480, £640, £730 by age group, is less variable across age groups because it much of this spending is incurred on behalf of everyone, including £125 in interest, £73 on defence and security and £53 on policing, justice and safety for example.

Spending on pensions and welfare of £365 per person per month is less evenly spread, with £290 and £320 per month spent on those in their first two decades and £440, £430, £430 and £450 on those in their twenties, thirties, forties and fifties respectively. This increases to average spending per person per month of £480, £640 and £730 on those in their sixties, seventies and eighties or over. 

Health and social care spending of £310 is biased towards older generations, with per person per month spending of £270, £110, £160, £180 and £200 for the first five decades of life contrasting with the £300, £370, £600 and £1,270 spent on average on those in their fifties, sixties, seventies and eighties or over. 

As you would expect, education spending of £155 per person per month on average is mostly spent on the young, with around £380 per person per month spent on the under-10s, £750 spent on those between 10 and 19, £110 spent on those in their twenties, and £30, £20 and £10 respectively spent on those in their thirties, forties and fifties.

The reason this chart is so critical is because demographics are not in a steady state, with the ONS projecting that there will be an additional 3.3m pensioners in 20 years’ time, a 27% increase. This will have significant cost implications for this and future governments over a period when the working-age population – who pay most of the taxes to fund public spending – is projected to grow by just 4% in total. 

While a declining birth rate might relieve some of the pressure on education spending over the next 20 years, spending on the state pension, the NHS and on social care will grow significantly if the commitments made by the current and previous governments to provide for income in retirement, universal free health care and an increasing level of social care provision are to be met, at the same time as running public services to the standard required.

Kwasi Kwarteng’s predecessors have been able to cover the expanding share of public spending going on pensions and health and social care without raising taxes above 40% of the economy by cutting spending on public services, in particular the defence budget, which has declined from in the order of 10% of GDP to around 2% over the last half century. However, with defence already at the NATO minimum, and many public services under significant pressure to improve delivery, there is much less scope to find savings than there has been in the past.

This poses a very big challenge for the Chancellor as he puts together his medium-term fiscal plans. Economic growth needs to be much higher than it has been in recent years, not only to cover the cost of tax cuts that he hopes will generate that growth, but also to generate the extra tax receipts needed to fund pensions and health and social care as more people live longer lives.

This chart was originally published by ICAEW.