UK Workers' Tax Burden Rises Fastest Among Rich Nations, OECD Reports
Taxes on British workers have surged at the quickest pace in the developed world over the past year, according to a new analysis from the Organisation for Economic Cooperation and Development. The economic body found that Britain experienced the most significant increase in the 'tax wedge' out of its 38 member nations during 2025.
The tax wedge, a key metric estimating total taxes on labour paid by both employees and employers minus cash benefits for working households, rose by 2.45 percentage points in the UK. This measure effectively represents the gap between what an employer pays to hire a worker and the net pay that individual takes home.
Drivers Behind the Tax Increase
The OECD attributed the rise in the UK primarily to Chancellor Rachel Reeves's 2024 autumn budget, which increased the rate of national insurance contributions paid by employers. Additionally, the organisation cited 'fiscal drag' as a contributing factor, where tax revenues climb because payment thresholds are not adjusted annually for inflation.
Among other OECD countries, Estonia recorded the next largest increase at 1.95 percentage points, followed by Germany at 1.34 percentage points and Israel at 1.09 percentage points. In total, 24 nations saw an annual rise in the tax wedge last year, while 11 experienced a decrease and three remained unchanged.
Comparative Tax Levels and Political Context
Despite this rapid escalation, the UK's tax wedge stands at 32.4%, which remains below the OECD average of 35.1%. Across the member states, the measure ranges from 0% in Colombia to 52.5% in Belgium.
This development occurs against a backdrop of political scrutiny, as Labour had pledged not to raise taxes on working people ahead of Keir Starmer's general election landslide in 2024. However, the OECD analysis includes taxes paid by employers as well as employees, broadening the scope of the assessment.
Chancellor Reeves has defended her tax policies, arguing they are essential to repair Britain's battered public finances and fund services that deteriorated during 14 years of Conservative-led governance. Nonetheless, Labour has faced criticism for its tax and spending decisions since taking office, with overall taxes as a share of the economy reaching their highest level since the Second World War.
Broader Economic Implications
Business leaders have repeatedly criticised the chancellor's decision to hike employer national insurance contributions from last April, alongside government increases to the minimum wage and plans to strengthen employment rights. Unemployment has risen sharply since Labour assumed power nearly two years ago, though recent figures show a slight dip from 5.2% to 4.9% in early 2025, it remains above the pre-election level of 4.2%.
Some of the most significant employment declines have occurred in lower-paying sectors such as hospitality, leisure, and retail, which are particularly exposed to these tax rises. Labour's allies counter that these changes were necessary after years of sluggish pay growth and job insecurity for millions of workers.
Experts warn that the economic fallout from the Iran war could exacerbate unemployment, as price shocks from the conflict strain household and business finances. The International Monetary Fund recently forecast that taxes as a share of the UK economy are likely to climb at the fastest rate in the G7 between 2024 and 2031, with a potential global recession from Middle East escalation affecting Britain more than any other G7 nation.
A Treasury spokesperson stated: 'The decisions we made at the budget mean we can stabilise the economy and deliver support for families and businesses, including cutting the cost of living. Increasing the national minimum wage boosts pay for over 200,000 young workers, and employer national insurance contributions are lower when hiring under-21s.'
