The league table
Count the pensions, and Britain is one of Europe’s highest-taxed countries
The comforting figure gets quoted in every budget debate: UK tax is around 35–37% of GDP, below France at 44% and the EU around 40%. It’s not the whole story. The comparison leaves out the biggest compulsory payment most British workers make each year — the one sitting in their workplace pension — because Britain collects it privately rather than as tax. Put it back on a like-for-like basis, and the UK belongs near the top of the European table. And that’s before the burden’s sharp rise: it’s forecast to reach 43% of GDP by 2030-31.
France and Germany fund their state pensions through compulsory social contributions, and those contributions count as tax in every international comparison. Britain funds roughly half its pensions privately — through auto-enrolment and workplace schemes — money that is just as unavoidable in practice for millions of employees, but that counts as zero tax. It never reaches the league table. Add a fair estimate of it back, and a country that looks four or five points below the EU average is sitting right on it.
UK, as the tables report it
35.0%
OECD headline · 7th of 9
UK, with private pensions counted
39.9%
5th of 9 · +4.9 pts
EU-27 average
40.0%
0.1 pts above the adjusted UK
Tax as a share of GDP, 2023 — and the slice Britain keeps off the table
The UK bar shows its reported 35.0% in clay, and the private-pension estimate that belongs beside it in amber. Counted in, Britain overtakes Germany and the Netherlands and draws level with the EU average.
Bars are OECD Revenue Statistics 2025 (2023 tax year); the EU-27 line is Eurostat, not perfectly comparable. Ireland’s ratio is distorted by multinational-inflated GDP. The amber slice is an estimate, not an official statistic — see the method below.
The tell: Britain barely taxes for pensions at all
Social security contributions as a share of GDP, 2023. France and Germany raise more than twice what the UK does — and most of that difference is state pensions the UK funds privately instead.
The UK raises just 6.7% of GDP in social contributions; France raises 14.6% — more than double. The gap is, overwhelmingly, pensions: Britain runs about £131.8bn a year of workplace saving (more once personal pensions are added) through funded schemes that count as zero tax. Source: OECD Revenue Statistics 2025.
Even the OECD says the number is misleading
This isn’t a contrarian reading. The OECD, whose figure this is, is explicit that tax-to-GDP counts only compulsory payments to government— so mandatory private pension saving falls outside it by design. Its own work on net social expenditure makes the point sharper: once you account for the social spending that countries route through private schemes rather than the state, the gap between the “high-tax” continentals and “low-tax” Britain narrows dramatically. The headline league table isn’t wrong; it just measures something narrower than the burden people actually carry.
How big is the missing slice? The DWP puts workplace pension saving in 2023 — employee and employer contributions plus tax relief — at £131.8bn, about 4.9% of GDP (our calculation), and more once personal pensions are added, taking the total toward £150 billion a year. The Institute for Fiscal Studies frames the same fact from the other side: private pension provision runs at about 5.3% of national income against a state pension of 5.6% — so Britain runs very nearly halfits pensions privately. The money hasn’t vanished; it has been routed around the tax system.
And the direction of travel is steeply upward
Set the pensions aside for a moment, and the trend alone is stark. On the Office for Budget Responsibility’s projections the UK’s tax-to-GDP ratio is set to reach 43% of GDP by 2030-31, up from 37% in 2019-20 — a rise that would carry Britain from around four points below the average of advanced economies to slightly aboveit, though still short of the G7 average. So the pension adjustment isn’t a one-off trick to flatter a low number; it sits on top of a burden that is already high and climbing fast.
There’s a detail in the OBR’s own analysis that ties this piece to the others here. On standard comparisons, UK average and marginal labour tax rates sit broadly in line with the advanced-economy and G7 averages — but the OBR is careful to add that at many points in the UK income distribution the real marginal rates are far higher than those tidy averages suggest, and that raising tax there could hit people’s willingness to work especially hard. The £100,000 trap is exactly one of those points.
The honest read
Britain isn’t the low-tax outlier the 35% figure implies. It collects a large slice of “you must provide for old age”outside the tax system, where it never shows up in the tables that shape the debate. Count it, and the UK belongs in the top tier of European tax burdens — the tax is real, it’s just wearing a different label.
How this is calculated — and where to be sceptical
One number, two measures. The chart uses the OECD’s internationally-comparable figure — 35.0% for the UK in 2023 — because that’s the only way to line every country up on the same definition. The UK’s ownnational-accounts measure (ONS/OBR) runs a little higher, around 37–38%, and the OBR forecasts it reaching 43% by 2030-31. We keep the OECD figure for the cross-country bars and cite the UK’s own measure and trajectory in the text; both are correct, they just count slightly different things.
The tax-to-GDP bars are OECD Revenue Statistics 2025, reporting the 2023 tax year. The EU-27 average line is Eurostat (ESA 2010 national-accounts basis), notthe OECD series — close but constructed differently, so treat that one bar as indicative. Ireland’s 21.3% is the famous outlier: its GDP is inflated by the accounts of multinationals domiciled there, which flatters the denominator. It is in the chart for context, not as a fair comparator.
The adjustment — the amber slice on the UK bar — is our own estimate, and we want to be scrupulous about it, because it is exactly the kind of figure people will try to pull apart. The £131.8bn is the DWP’s total workplace pension saving for 2023 (employee contributions, employer contributions and tax relief combined); as a share of 2023 GDP of roughly £2,690bn that is about 4.9% — our arithmetic, not an official ratio. A conservative reading counts only private-sector auto-enrolment flows, worth roughly 2.3% of GDP; we show the fuller figure but the story survives at the floor.
Three caveats matter. First, that £131.8bn includes tax relief and public-sector scheme contributions, so it is not purely “extra” compulsory burden on private households. Second, the DWP contributions-in figure and the IFS benefits-out figure are different flows that happen to be similar in scale today. Third, treating pension saving as “tax-equivalent” is a framing choice: it is compulsory-in-practice for auto-enrolled employees, but it stays your money and buys you a pension, which a tax does not. Read the adjusted figure as “tax plus mandatory-in-practice saving”, not as tax.
This is the free, general version. Kept does it on your actual numbers.
The calculators here use typical figures. The Kept dashboard rebuilds your real household — income, company, pensions, savings — finds the reliefs the tax code already lets you claim, and forecasts what they keep over 20 years.
See your own positionSources
- OECD, Revenue Statistics 2025 (tax-to-GDP and social security contributions, 2023), and its methodology on the scope of “taxes” — oecd.org/tax/revenue-statistics.
- Office for Budget Responsibility, Fiscal risks and sustainability (UK tax-to-GDP trajectory to 2030-31; labour tax rates and marginal-rate warning) — obr.uk.
- Eurostat, Tax revenue statistics (EU-27 average) — ec.europa.eu/eurostat.
- DWP, Workplace pension participation and savings trends 2009 to 2023 (£131.8bn total saving) — gov.uk workplace pension trends.
- IFS Pensions Review (private vs state pension provision) — ifs.org.uk/pensions-review; OECD, Pensions at a Glance 2023 (public pension spending).