Comparing tax pressure between countries first requires agreeing on what is being measured. Depending on whether only taxes or the entire range of mandatory contributions (taxes and social contributions) are considered, the ranking of the most taxed countries in 2024 changes significantly. France, Denmark, and Belgium regularly compete for the top spots, but their respective positions directly depend on the scope chosen by the organization publishing the data.
Taxes relative to GDP or mandatory contributions: why the ranking changes
The OECD publishes an annual tax-to-GDP ratio for its 38 member countries. In 2024, France shows a ratio of 43.5% of taxes relative to GDP, placing it in second position behind Denmark. The Insee, on the other hand, calculates mandatory contributions (taxes plus social contributions) and obtains 43.6% of GDP for France in 2025.
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The difference between the two indicators is not trivial. Denmark finances a large part of its social protection through income tax, which inflates its pure tax ratio. France, meanwhile, relies more on social contributions deducted from salaries. When everything is aggregated, the hierarchy tightens, or even reverses, depending on the year.
A ranking of the most taxed countries cannot therefore be reduced to a single figure. The OECD itself breaks down tax revenues into six distinct categories: income and profits, social security contributions, wages, wealth, goods and services, and other taxes. Aggregating these categories or isolating them produces different rankings.
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Labor taxation in Europe: Belgium leads a specific indicator
Belgium consistently comes up in the debate. The president of the MR, Georges-Louis Bouchez, has repeatedly claimed that his country is “the most taxed in the world.” OECD data partially supports this claim, but within a limited scope: Belgium ranks first for labor taxation.
This indicator measures the “tax wedge” on wages, which is the gap between the total cost to the employer and the net salary received by the employee. It includes income tax and social contributions (employer and employee). On this criterion, Belgium significantly outpaces the eurozone average.
However, as soon as the scope is broadened to include all tax revenues relative to GDP, Belgium falls back. According to Eurostat, it ranks second. According to the OECD, it is rather in sixth position. The difference lies in the methodologies: Eurostat and the OECD do not account for exactly the same flows.
- Labor taxation (tax wedge): Belgium ranks first among OECD countries, ahead of Germany and France.
- Total tax revenues relative to GDP (Eurostat): Belgium ranks second.
- Total tax revenues relative to GDP (OECD): Belgium falls to sixth position.
- Wealth taxation: Belgium only appears in seventh position according to the OECD.
A single country can therefore be first on one indicator and sixth on another. Any claim such as “the most taxed country in the world” should be accompanied by the exact scope considered.
France and corporate taxation: a persistent gap in the taxation of productive activity
France stands out from another angle rarely highlighted in public comparisons. Beyond personal income tax, the country applies high taxation on what Medef calls “productive activity”: corporate tax, production taxes, employer contributions.
According to Medef, France remains one of the OECD countries that taxes capital and production the most. This gap compared to the eurozone average has not diminished after the reforms initiated since 2021. Production taxes (territorial economic contribution, C3S, corporate property taxes) constitute a French specificity that most European neighbors do not apply or do so to a lesser extent.
The average for eurozone countries for mandatory contributions is around 41.7% of GDP, which is about five points lower than France. For the entire OECD, this average drops to 34% of GDP. The gap between France and the global average of developed economies remains substantial.
What this high tax pressure finances
A tax rate of over 43% means that for every hundred euros produced by the French economy, the state recovers more than 43. These revenues, which represent about 1,200 billion euros per year, finance a redistributive social model. Pensions alone absorb a quarter of tax revenues.
The raw comparison between countries must therefore take into account the trade-off: Denmark, highly taxed, offers a health and education system largely financed by taxes. France redistributes massively through social benefits. Countries with lower taxation shift these burdens onto households (private insurance, tuition fees).
Limits of international tax comparisons
The available data do not always allow for definitive conclusions. Several biases complicate comparisons:
- The calculation scopes vary from one organization to another (OECD, Eurostat, IMF), which explains the ranking discrepancies for the same country.
- Some countries finance public services through fees or contributions not classified as “taxes,” which artificially lowers their tax ratio.
- Higher marginal income tax rates (Denmark exceeds most European countries) do not reflect the actual burden for an average taxpayer.
The tax-to-GDP ratio remains the benchmark indicator for comparing tax pressure between countries, but it says nothing about the efficiency of public spending or the level of services provided to taxpayers. Two countries with the same ratio can offer very different services in terms of health, retirement, or infrastructure.
The next edition of the OECD Public Revenue Statistics, expected at the end of 2025, will include consolidated data from 2024 for all members. Until then, the respective positions of France, Denmark, and Belgium remain dependent on the measurement scope chosen, and any definitive hierarchy is more a matter of methodological choice than raw fact.