Tax in retirement · Guide

State pension and income tax — the bill retirees don't expect.

The full new state pension is £11,502.40 per year in 2025/26. That's taxable income. And because HMRC doesn't deduct tax at source, the bill arrives in ways many retirees don't anticipate.

By Pension Bible editorial team·Last reviewed 9 April 2026·4 min read

Yes — the state pension IS taxable income

A common assumption among people approaching retirement is that the state pension is tax-free. It is not. The state pension is classified as earned income by HMRC and is subject to income tax in exactly the same way as employment income or a private pension.

The full new state pension for 2025/26 is £11,502.40 per year (£221.20 per week). That amount counts towards total taxable income for the year.

What confuses people is that no tax is visibly deducted. There's no payslip, no PAYE code applied to the state pension payment itself. The money arrives gross — the full amount, every four weeks. This makes it feel tax-free. It isn't.

How it interacts with your personal allowance

The personal allowance for 2025/26 is £12,570. That's the amount of income anyone can receive before paying income tax.

The full new state pension of £11,502.40 consumes 91.5% of that allowance. This leaves just £1,067.60 of tax-free allowance for everything else — private pension income, part-time work, rental income, savings interest.

Any income above £12,570 in total is taxed at the basic rate of 20% (up to £50,270), then 40% above that. So a retiree receiving the full state pension plus £10,000 from a workplace pension would pay tax on £8,932.40 of the workplace pension income.

For people receiving less than the full state pension (due to gaps in their National Insurance record), the picture is slightly more generous — more of the personal allowance remains available for other income. But the principle is the same: the state pension occupies the allowance first.

The income tax retirement calculator models the combined effect of state pension plus other income sources.

Why tax isn't deducted at source

The Department for Work and Pensions (DWP) pays the state pension gross. It does not operate PAYE on state pension payments. This is different from workplace or private pensions, where the provider deducts tax before paying out.

Instead, HMRC collects the tax owed on the state pension through one of two mechanisms:

1. Tax code adjustment. If the retiree also receives a private or workplace pension (or employment income) paid through PAYE, HMRC adjusts the tax code on that income source. The tax code is reduced to account for the state pension, meaning more tax is deducted from the other income. The effect is that the retiree pays the correct total tax — but all of it comes out of the non-state-pension income.

2. Self Assessment. If there is no PAYE income source for HMRC to adjust, or if the tax situation is more complex (multiple income sources, higher-rate tax), HMRC may require the retiree to file a Self Assessment tax return and pay the tax directly.

In both cases, the state pension itself is never reduced. The gross amount always arrives in full. The tax is just collected elsewhere.

The Self Assessment requirement

Not every retiree needs to file a Self Assessment return. HMRC only requires it when:

• Total income exceeds £150,000
• There are multiple income sources that can't all be handled through PAYE tax code adjustments
• There is untaxed income above certain thresholds (e.g., rental income, trading income)
• The personal allowance is tapered (income above £100,000)

For a retiree whose only income is the state pension, no tax is due if it remains below the personal allowance — and no Self Assessment return is needed.

But add a private pension, part-time earnings, or rental income on top, and the calculation changes. HMRC will typically write to inform someone they need to register for Self Assessment. Ignoring that letter doesn't remove the obligation.

The key practical point: if total retirement income from all sources exceeds the personal allowance, tax is owed. If the state pension is the largest single component — and for many retirees it is — it has effectively used up the tax-free band, meaning almost every pound from other sources is taxable.

The pension lump sum tax calculator can help estimate the tax impact of withdrawing a lump sum from a private pension on top of state pension income.

This is factual information, not financial advice. If you're unsure what's right for your situation, speak to an FCA-regulated financial adviser.