But behind the good news lies a hidden sting in the tail: more retirees may soon find themselves paying income tax on a pension they once thought was entirely tax-free.

The Triple Lock in Action

Thanks to the government’s triple lock guarantee, the state pension increases each year by the highest of three measures:

• 2.5%,
• the rate of inflation, or
• average wage growth.

According to the latest figures from the Office for National Statistics, average earnings growth of 4.7% will be the measure used this year. That means from April 2026, the full new state pension (for those reaching pension age after April 2016) is set to rise to £241.05 per week, or £12,534.60 per year, an increase of £561.60.

Those on the old basic state pension will see their weekly amount rise to £184.75, equivalent to £9,607 per year, an increase of £431.60.

At first glance, this is good news for retirees facing persistent cost-of-living pressures. But there’s more to the story.

Fiscal Drag: The Hidden Consequence of a Frozen Threshold

The personal income tax allowance, the amount you can earn tax-free is frozen at £12,570 until 2028.

This freeze is a driver of fiscal drag, where a combination of rising incomes and static tax thresholds results in a higher proportion of income being taxed over time. In this case, the growing state pension will gradually pull more people into the tax system, even though their real spending power may not have improved.

If the triple lock continues to deliver similar annual rises, many could find themselves paying tax for the first time by 2027.

For example, a pensioner receiving the full new state pension of £12,534 will have just £36 of tax-free headroom before exceeding the personal allowance. A modest amount of taxable savings income, such as interest from bank deposits, dividends from shares, or a small capital gain above the annual exemption – could be enough to tip them over.

As former Pensions Minister Steve Webb has warned, “the standard rate of the new state pension is creeping ever closer to the frozen personal tax allowance.” If nothing changes, that crossover will happen within the next two years.

Case Study: Mrs Patel’s New Tax Bill

Mrs Patel, aged 68, has no private pension and lives solely on the state pension.

This year she receives around £11,953. After the April 2026 increase, her annual pension income will be roughly £12,535, bringing her to within £36 of the tax-free threshold.

By April 2027, assuming even a modest 2.5% uplift, her income would reach £12,850 – meaning she’ll owe income tax for the first time, despite having no other earnings.

If she also earned savings interest or dividends or sold personal assets and made a taxable gain above the current £3,000 capital gains allowance, she could face a larger tax bill.

While each of these examples might sound minor in isolation, the effect of fiscal drag means more pensioners will face these situations over the coming years.

The Bigger Picture

1. More Pensioners Paying Tax

Nearly three-quarters of UK pensioners already pay some form of income tax. The combination of rising pensions and frozen thresholds is likely to draw millions more into this bracket.

2. Fiscal Pressures Mounting

According to the Office for Budget Responsibility, maintaining the triple lock adds substantially to long-term government spending. Each percentage point rise in earnings-linked pensions adds billions to the annual bill.

3. Policy Debate to Come

Economists and think-tanks, including the Institute for Fiscal Studies, have raised concerns over the sustainability of the triple lock. The next few years are likely to see renewed debate about whether it can continue in its current form without adjustment.

What This Means for You

Any rise in the state pension provides welcome relief against rising living costs, but the impact on your take-home income may be less than expected. With more people crossing the tax threshold, understanding your full financial position is increasingly important.

You may wish to:

• Review your total income — including state pension, private pensions, interest, dividends, or part-time earnings — to see whether you are likely to exceed the personal allowance.
• Plan withdrawals carefully if you have a private pension. Drawing additional income could increase your tax bill, so it’s worth reviewing the timing and amount with professional advisers.
• Check your tax code if you receive both a state and a private pension; errors can lead to over- or under-payment.
• Speak to your accountant and independent financial adviser (IFA) before making changes to how or when you access your retirement income.

Our Role and Limitations

As accountants, we can advise on the taxation of pension income and ensure you remain compliant in respect of your tax affairs.

However, please note that we are not FCA-regulated and therefore cannot provide advice on the investment or financial planning aspects of pensions. If you need guidance on where or how to invest, we’ll be happy to refer you to a suitably authorised financial adviser.

In Summary

The state pension rise for 2026 is good news – but it comes with a growing tax headache for many retirees.

The combination of frozen thresholds and steady pension increases is a clear example of fiscal drag, meaning that even those relying solely on state support may soon face an unexpected tax bill.

Understanding where you stand now will help you plan ahead – and make sure that a welcome increase in your pension doesn’t end up costing you more than it gives.