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State Pension · Data & Research

State Pension Cost Projections: What the UK Numbers Show

Official projections on how much the UK state pension costs today, how that share of the economy is set to grow, and what drives the figures.

9 min read · Written by the Fairchild Oldfield team · Last reviewed: July 2026

7.7%
The share of GDP that UK state pension spending is projected to reach by the early 2070s, up from around 5% in 2024-25, in the OBR's central long-term projection.
Source: OBR, Fiscal risks and sustainability, July 2025. Projection, subject to change.

UK state pension spending stood at around £138 billion, roughly 5% of GDP, in 2024-25, and the Office for Budget Responsibility projects it to rise to about 7.7% of GDP by the early 2070s (OBR, Fiscal risks and sustainability, July 2025, projection subject to change).

This is a data piece rather than advice. It draws together published figures from the OBR and gov.uk on what the state pension costs, how the triple lock and an ageing population push that cost upward, and how the state pension age is scheduled to change. All statistics are attributed to a named official source at the point of use, with the reference period shown. Figures are as at July 2026 and are subject to change.

Key figures at a glance

State pension spending is the second-largest item in the UK budget after health, at around £138 billion (about 5% of GDP) in 2024-25 (OBR, July 2025, subject to change). The table below sets out the headline numbers on cost, rates and the pension age, each with its source and reference period.

FigureValueSource & period
State pension spending~£138bn (~5% of GDP)OBR FRS, 2024-25
Projected spending, early 2070s7.7% of GDPOBR FRS, central projection, July 2025
Triple lock added cost by 2029-30£15.5bn/yr (0.5% of GDP)OBR FRS, July 2025
State pension cash spending£125bnOBR, pensioner benefits, 2023-24
Average state pension award£9,720OBR, pensioner benefits, 2023-24
Full new State Pension£241.30/weekgov.uk, from 6 Apr 2026
Basic State Pension£184.90/weekgov.uk, from 6 Apr 2026
2026 uprating (triple lock)+4.8%gov.uk, 4 Apr 2026
Pensioners receiving the 2026 riseover 12 milliongov.uk, Apr 2026
State pension age rise (66 to 67)Apr 2026 to Mar 2028OBR; gov.uk
Net saving, pension age 66 to 67£10.5bn in 2029-30OBR, box

All figures subject to change. Percentages of GDP are the OBR's preferred measure of fiscal sustainability.

How state pension costs have grown

State pension spending held in a narrow band of 3.3% to 3.7% of GDP through the two decades to 2007-08, reached around 5% of GDP (£138 billion) in 2024-25, and is projected to climb to 7.7% by the early 2070s (OBR, pensioner benefits; OBR FRS, July 2025, subject to change). The direction of travel is a rising claim on national income.

PeriodState pension spending (% of GDP)Source
Two decades to 2007-083.3% to 3.7%OBR, pensioner benefits
2024-25~5% (£138bn)OBR FRS, July 2025
Early 2070s (projected)7.7%OBR FRS, July 2025

Two forces sit behind the trend. The population is ageing, so more people reach state pension age relative to the working-age population who fund it. The Office for National Statistics projected that more than 24% of people in the UK would be aged 65 or over by 2042, up from 18% in 2016 (ONS, 2018-based projections, published 2019, subject to change). The second force is how the pension itself is uprated each year, covered next.

The uprating

The triple lock and the 2026 uprating

The triple lock uprates the basic and new State Pensions each year by the highest of earnings growth, price inflation, or 2.5%. For 2026-27 that produced a 4.8% rise, lifting the full new State Pension to £241.30 a week from 6 April 2026, with over 12 million pensioners affected (gov.uk, 4 April 2026, subject to change).

Pension2025-26From 6 Apr 2026
Full new State Pension£230.25/wk£241.30/wk
Basic State Pension£176.45/wk£184.90/wk

Source: gov.uk, 4 April 2026; full new rate also shown at gov.uk/new-state-pension. Rates as at July 2026, subject to change.

The compounding cost

£15.5bn

The OBR estimates that uprating by the triple lock rather than by earnings will have added about £15.5 billion a year (0.5% of GDP) to state pension spending by 2029-30, around three times higher than initial expectations (OBR FRS, July 2025, subject to change).

A rising state pension age

Raising the state pension age is one of the main levers used to contain cost. The age is scheduled to rise from 66 to 67 for men and women between April 2026 and March 2028, and the OBR estimates that this single change reduces net borrowing by about £10.5 billion in 2029-30 compared with keeping it at 66 (OBR, box; gov.uk, subject to change).

How the saving breaks down (OBR estimate, 2029-30). Of the roughly £10.5 billion net reduction in borrowing from raising the state pension age to 67, the OBR attributes about £10.4 billion to lower state pension eligibility and around £0.9 billion to extra employment and tax revenue, partly offset by about £0.7 billion in higher working-age benefit claims (OBR, box, subject to change). Individual state pension age depends on date of birth and can be checked on gov.uk.

A further increase to 68 is set out in legislation for later decades and is kept under periodic review, so the timetable can change (gov.uk, as at July 2026). Because the qualifying age depends on your date of birth, many people choose to check their own state pension age and forecast directly on gov.uk rather than rely on a single headline figure.

What the numbers mean

Read together, the figures describe a state pension that is affordable now but under steady upward pressure: about 5% of GDP today, projected at 7.7% by the early 2070s, with the triple lock alone adding an estimated £15.5 billion a year by 2029-30 (OBR FRS, July 2025, subject to change). The analysis below is our own reading and is general commentary, not advice.

In our view three points stand out. First, the growth is gradual rather than sudden, which is why policy has tended to lean on slow-acting levers such as the state pension age rather than abrupt changes to entitlement. Second, the OBR frames the triple lock as a source of asymmetric risk: when inflation or earnings spike, the pension ratchets up and does not fall back, so persistent volatility could add a further 1.5% of GDP (about £43 billion in 2024-25 terms) by the early 2070s (OBR FRS, July 2025, subject to change). Third, these are projections built on assumptions about longevity, migration and productivity, so the further out they run, the wider the range of plausible outcomes. None of this tells any individual what their own pension will be worth; it describes the system, not a personal forecast.

Projections describe the size of the promise, not any one person's entitlement. What a given household receives still depends on National Insurance record, date of birth and future policy.

What this means for retirement and estate planning

The state pension is a foundation of retirement income rather than a complete plan, and the average award was around £9,720 in 2023-24 (OBR, pensioner benefits, subject to change). Because it is modest relative to many households' needs, private pensions, savings and property often carry much of the load, which is where later-life and estate planning tend to overlap.

A few connections are worth noting in general terms. The state pension is taxable income but is not itself part of your estate for inheritance tax; private pension pots and other assets can be. Standard inheritance tax thresholds, the £325,000 nil-rate band and residence nil-rate band of up to £175,000, are frozen to the end of the 2030-31 tax year (5 April 2031) — a freeze extended by a further year at the Budget on 26 November 2025 — so more estates may fall within scope over time (gov.uk, Budget 2025, as at July 2026, subject to change). Many people choose to look at retirement income and estate plans together, and it can be worth discussing pensions with an FCA-authorised financial adviser. For background, see our estate planning guide, our overview of Inheritance Tax Explained, and the data on UK pension wealth.

Sources and methodology

Every statistic on this page comes from a named official source and was checked against the live publication in July 2026. Cost projections are the OBR's central estimates; figures expressed as a share of GDP follow the OBR's own presentation, which it treats as the most relevant measure of sustainability (OBR FRS, July 2025).

  • OBR, Fiscal risks and sustainability, July 2025: spending of ~£138bn (~5% of GDP, 2024-25); 7.7% of GDP by the early 2070s; triple lock adding ~£15.5bn/yr by 2029-30. obr.uk
  • OBR, Welfare spending: pensioner benefits: £125bn state pension cash spending and £9,720 average award (2023-24); 3.3%-3.7% of GDP in the two decades to 2007-08. obr.uk
  • OBR, The fiscal impact of increases in the state pension age: pension age rising 66 to 67 between April 2026 and March 2028; ~£10.5bn net saving in 2029-30. obr.uk
  • gov.uk, State Pension boost announcement, 4 April 2026: 4.8% uprating; full new State Pension £241.30/wk and basic £184.90/wk from 6 April 2026; over 12 million pensioners. gov.uk
  • gov.uk, The new State Pension and State Pension age: current full rate and pension age rules. gov.uk/new-state-pension, gov.uk/state-pension-age
  • ONS, Living longer, 2018-based projections (2019): 24%+ of the UK aged 65+ by 2042, up from 18% in 2016. ons.gov.uk
  • gov.uk, Inheritance Tax: nil-rate band and residence nil-rate band, frozen to end of 2030-31 (5 April 2031), extended a further year at Budget 2025 (26 November 2025). gov.uk/inheritance-tax

Frequently asked questions

How much does the UK state pension cost?

State pension spending was around £138 billion in 2024-25, roughly 5% of GDP, making it the second-largest item in the UK budget after health (OBR, Fiscal risks and sustainability, July 2025, subject to change). In cash terms the OBR recorded £125 billion of state pension spending in 2023-24 (OBR, pensioner benefits).

What are the state pension cost projections for the UK?

In the OBR's central long-term projection, state pension spending rises from around 5% of GDP in 2024-25 to about 7.7% of GDP by the early 2070s (OBR, July 2025, subject to change). These are projections based on assumptions about ageing, earnings and inflation, so the actual path can differ, generally more so the further ahead the estimate runs.

How much does the triple lock cost?

The OBR estimates that uprating the state pension by the triple lock rather than by earnings will have added about £15.5 billion a year, roughly 0.5% of GDP, by 2029-30, around three times higher than initial expectations (OBR, Fiscal risks and sustainability, July 2025, subject to change). The OBR also notes the triple lock creates asymmetric exposure to inflation and earnings shocks.

How much is the state pension in 2026-27?

From 6 April 2026 the full new State Pension is £241.30 a week and the basic State Pension is £184.90 a week, following a 4.8% triple lock increase (gov.uk, 4 April 2026, subject to change). What an individual actually receives can depend on their National Insurance record, so many people check their own forecast on gov.uk.

When is the state pension age going up?

The state pension age is scheduled to rise from 66 to 67 for men and women between April 2026 and March 2028, with a further increase to 68 legislated for later decades and kept under review (gov.uk, as at July 2026, subject to change). Because the qualifying age depends on date of birth, it can be checked directly on gov.uk. Rules apply across Great Britain, with Northern Ireland broadly aligned.

Is the state pension part of my estate for inheritance tax?

The state pension is taxable income during your lifetime and stops on death, so it is not itself an asset in your estate for inheritance tax (gov.uk, as at July 2026). Private pensions and other assets may form part of the estate, depending on circumstances. The rules can be complex, so it can be worth discussing your position with a qualified professional.

About Fairchild Oldfield

Fairchild Oldfield are estate planning specialists and will writers based in England and Wales. We are not a firm of solicitors and do not provide reserved legal services or regulated financial advice.

This article is general information drawn from published official statistics, not legal, tax or financial advice, and does not create a professional relationship.

Important: This article is general information only and is not legal, tax or financial advice. Reading it does not create a professional relationship. It is based on the law and statistics of Great Britain, with the state pension administered UK-wide; other UK jurisdictions may differ on related matters. Figures and projections are as at July 2026 and are subject to change; long-term projections in particular carry significant uncertainty. Before acting, many people choose to seek advice from a suitably qualified professional, such as an FCA-authorised financial adviser, a solicitor, or an accountant, who can consider your individual circumstances.

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