Who Pays for the State? A Breakdown of UK Tax Contribution

The UK government is forecast to raise approximately £1.13 trillion in revenue for the 2025/26 financial year. While the aggregate figure is well-publicized, the distribution of this burden – who pays, how much, and through which mechanisms – is often less understood.

By analysing official data from HMRC and the Office for National Statistics (ONS), we can observe distinct, and often opposing, forces at work within the tax system.

The “career prime” peak (age and gender)

Tax contribution is deeply tied to our life stages. As the chart below illustrates, tax revenue follows a clear “hill” shape.

Contribution is low when we are starting our careers, ramps up significantly in our 30s, and hits a peak between the ages of 45 and 54.

This decade is typically the “career prime” for many workers—where experience, seniority, and hourly wages converge to produce the highest earnings. This single age bracket contributes roughly 30% of all income tax.

However, the chart also highlights two societal challenges:

1. The Gender Gap: Men contribute nearly two-thirds of all income tax. This is not because tax rates are different based on gender, but because it reflects the wider economy: more men occupy higher-paying senior roles, and more women work part-time, often balancing careers with care responsibilities, keeping their total taxable income lower.
2. The Retirement Cliff: As people leave the workforce and rely on pensions, their tax liability falls. In an aging society where people are living longer post-retirement, this creates significant pressure on the working-age population behind them.

The heavy lifters (income groups)

If the Age/Gender chart shows when we pay tax, the Income Group chart shows how much.

The UK operates a "progressive" tax system. This is a deliberate political design meaning the more you earn, the higher percentage of your income you pay.

The results of this design are that the UK tax base is incredibly top-heavy:

• The Top 1%: This tiny group—about 340,000 people earning over £192,000 a year—contributes 29.1% of all Income Tax. To put that in perspective, the tax paid just by the top 1% is roughly equivalent to the entire budget of NHS England.
• The Top 10%: If you combine the top two green bars, you find that those earning over roughly £60,000 (the top 10% of earners) pay 60% of the nation's entire Income Tax bill.

Conversely, the "Bottom 50%" of earners contribute only about 10% of the total. This is largely due to the Personal Allowance, which allows everyone to earn their first £12,570 tax-free, protecting the lowest earners from Income Tax entirely.

Direct and indirect taxation: The hidden counterbalance

When we look exclusively at direct taxes - principally income tax - the data reveals a highly concentrated tax base. The system is designed to be progressive, meaning contributions rise disproportionately with earnings.

However, focusing solely on income tax provides an incomplete picture. A different dynamic emerges when we analyse Indirect taxes - levies such as Value Added Tax (VAT), fuel duty, and duties on alcohol and tobacco.

Unlike income tax, which targets earnings, these taxes target consumption. Because lower-income households tend to spend a larger proportion of their earnings on essentials and goods subject to VAT (saving less than high earners), the burden of these taxes falls differently.

ONS data on The Effects of Taxes and Benefits shows an inverse relationship compared to Income Tax:

• Cash Terms: High-income households pay more in absolute terms simply because they consume more.
• Percentage Terms: Low-income households pay a significantly higher percentage of their disposable income in indirect taxes.

For the poorest 10% of households, indirect taxes can account for roughly 22% of their disposable income. For the richest 10%, this figure drops to approximately 8-9%, as a larger portion of their money flows into savings, investments, or mortgages, which do not attract VAT.

A complex balancing act

The UK tax system is structurally top-heavy regarding income, relying on a small demographic of high-earning, working-age individuals to fund the bulk of public services.

Yet, when expenditure is factored in, the system exerts a heavier proportional pressure on lower-income households through indirect taxation. Understanding both sides of this equation - the progressive nature of income tax and the regressive nature of consumption taxes - is essential for any informed discussion on fiscal responsibility and fairness.