Introduction
For the first time, the full new State Pension sits within a few pounds of the tax-free personal allowance, and the wage figures published this month suggest it will pass it next April. That turns state pension tax into a live question for people who have never filed a tax return in their lives.
The mechanism matters more than the headline. The personal allowance is frozen at £12,570 until April 2031, while the State Pension rises every year under the triple lock. Once the State Pension alone fills the allowance, every pound of taxable income drawn from a SIPP or workplace pension is taxed from the first pound, because there is no unused allowance left to absorb it. That is the state pension tax squeeze.
Money held in a Stocks and Shares ISA behaves differently, and that difference is the subject of this guide. Below we set out how the two wrappers are treated once the allowance is used up, and how the arithmetic works with real figures. If you are still building a pot rather than drawing from one, our compound interest calculator is a useful place to start.
The information provided on this page and throughout the website is for general information purposes only and does not constitute financial advice. It is important that you conduct your own research and consider your own personal circumstances before making any investment decisions.
Quick Answer: Will You Pay State Pension Tax From April 2027?
The State Pension is paid gross, so no tax is taken off it directly. It still counts as taxable income. At £241.30 a week it sits just under the £12,570 personal allowance. A further triple lock rise would push it above, and the tax would then be collected through your tax code or a Simple Assessment.
Why The Personal Allowance No Longer Covers The Full State Pension
The full new State Pension is £241.30 a week. Across 52 weeks that is £12,547.60 a year, which leaves just £22.40 of headroom under the £12,570 personal allowance in the 2026/27 tax year.
That gap has been closing for years because two numbers move in opposite directions. The personal allowance has been frozen since 2021/22, and at the 2025 Budget the freeze was extended for a further three years, to April 2031. The State Pension, by contrast, rises every April under the triple lock.
The rise of state pension tax is arithmetic rather than policy intent. Hold a threshold still for long enough and any rising payment will eventually cross it. The chart below shows how narrow the margin now is.
£22.40
The headroom left under the personal allowance for someone on the full new State Pension in the 2026/27 tax year, before any other income is counted.
9.58 million
The number of people of State Pension age forecast to pay income tax in 2026/27, up from 6.47 million in 2020/21, according to House of Commons Library figures.
How State Pension Tax Is Actually Collected
This is where plain English summaries mislead. The Department for Work and Pensions does not operate PAYE on the State Pension. It arrives in full, with nothing deducted.
That is not the same as being tax free. The State Pension is taxable income, and HMRC collects anything due by one of three routes:
- Through your tax code. If you also draw a workplace pension or a SIPP, HMRC adjusts the code applied to that income so the tax on your State Pension is taken there instead.
- Through Self Assessment. If you already file a return for another reason, the State Pension goes on it.
- Through Simple Assessment. If neither route works, HMRC issues a calculation after the end of the tax year and you pay it directly.
The practical consequence is that state pension tax rarely appears as a smaller State Pension payment. It appears as a smaller payment from something else, or as a bill that arrives months later.
The Triple Lock Arithmetic Behind The 2027 Figure
The triple lock raises the State Pension by the highest of three measures: growth in average weekly earnings over May to July, the Consumer Prices Index for September, or 2.5%.
Two of those inputs are now partly visible. The ONS reported annual growth in total pay including bonuses of 3.9% for the three months to July 2026, with regular pay at 3.5%. CPI stood at 3.1% in the 12 months to August 2026.
The figure the triple lock actually uses is September CPI, which is published in October. Unless it lands above 3.9%, earnings growth would be the binding measure. Nothing is settled until the Secretary of State lays a draft uprating order before Parliament.
Applying 3.9% to £241.30 gives about £250.71 a week, or roughly £13,037 across 52 weeks. That is around £489 more than this year, and about £467 above the personal allowance. The state pension tax due on that excess, at the 20% basic rate, would be roughly £93 a year.
The Two Wrappers Side By Side
Once state pension tax is in play, the useful question stops being how much you have and becomes which pot you take it from. The table sets out how the three common sources of retirement income are treated.
| Treatment | State Pension | SIPP or workplace pension | Stocks and Shares ISA |
|---|---|---|---|
| Uses your personal allowance | Yes | Yes, on the taxable part | No |
| Tax on money taken out | Taxable as income | Up to 25% tax free, capped at £268,275. The rest taxed as income | None |
| Declared on a tax return | Yes, if you file one | Yes | No |
| Tax relief on the way in | Not applicable | Yes, at your marginal rate | No |
| Annual contribution limit | Not applicable | £60,000 annual allowance | £20,000 across all ISAs, 2026/27 |
| When you can take the money | From State Pension age | From the normal minimum pension age | Any time |
Sources: GOV.UK income tax rates and allowances, ISA rules, pension lump sum allowance and pension annual allowance. Verified 21 September 2026.
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How Each Wrapper Is Taxed Once The Allowance Is Used
Pensions and ISAs are both tax privileged, but at opposite ends of the journey. A pension gives relief going in and taxes most of what comes out. An ISA gives no relief going in and takes nothing on the way out.
GOV.UK is unambiguous on the ISA side. You do not pay tax on interest on cash in an ISA, or on income or capital gains from investments in an ISA. It goes further: if you complete a tax return, you do not need to declare any ISA interest, income or capital gains on it.
That second sentence is the one that matters here. An ISA withdrawal is not income taxed at 0%. It is not income at all. It cannot consume a personal allowance the State Pension has already claimed, and it cannot push you into a higher band.
A pension works the other way round. You can usually take up to 25% of a pot as a tax-free lump sum, capped at £268,275 across all your pensions. Everything beyond that is taxed as income and stacks on top of the State Pension. The same logic runs through other taxable-income tests, which is why we looked separately at what the £100,000 adjusted net income test sees and at why ISA income does not count towards the Winter Fuel Payment clawback.
Access, Trade-offs And What You Give Up
None of this makes an ISA better than a pension. They are not competing for the same job.
A pension carries the one thing an ISA cannot match: tax relief on the way in at your marginal rate, plus employer contributions if you are still working. For a basic rate taxpayer, £80 becomes £100 inside the pension before anything is invested. The annual allowance for pension contributions is £60,000, against £20,000 for ISAs.
What the ISA offers instead is control over timing. Pension money is locked until the normal minimum pension age. ISA money is available whenever you want it, and taking it does not move you up a tax band, because it never enters your income figure.
The constraint is that £20,000 annual limit in the 2026/27 tax year, shared across every ISA you hold. You cannot build a large ISA quickly, which is why the order in which you fill the wrappers matters long before you retire. If you are unsure how the limit is shared, see our guide to how many ISAs you can hold.
A Worked Example: £20,000 Of Income From Two Routes
Take a 2027/28 tax year in which the State Pension has risen by 3.9% to about £13,037, and assume you want a further £20,000 a year to live on. Assume the 25% tax-free pension cash has already been taken, so pension withdrawals are fully taxable. The personal allowance stays at £12,570 and the basic rate is 20%.
| Line | All from the SIPP | Half SIPP, half ISA |
|---|---|---|
| State Pension | £13,037 | £13,037 |
| Taxable pension withdrawal | £20,000 | £10,000 |
| ISA withdrawal | £0 | £10,000 |
| Total taxable income | £33,037 | £23,037 |
| Less personal allowance | £12,570 | £12,570 |
| Amount taxed at 20% | £20,467 | £10,467 |
| Income tax due | £4,093 | £2,093 |
| Money in hand | £28,944 | £30,944 |
Illustrative arithmetic using GOV.UK income tax rates for 2026/27 and an assumed 3.9% uprating. Verified 21 September 2026.
The £2,000 difference is not clever planning. It is simply 20% of the £10,000 drawn from a wrapper that income tax cannot see. Both routes carry the same state pension tax and deliver the same £33,037 before tax.
It is also not free money. The ISA pot received no tax relief when it was built, and the pension pot did. Whether the trade is worth making depends on your marginal rate when you contributed against your marginal rate now, and on the size of each pot. That is a calculation for your own figures, and for an FCA-regulated adviser if the sums are large.
Where People Get State Pension Tax Wrong
Most of the confusion about state pension tax comes down to four specific misunderstandings.
Paid gross is not the same as tax free
The State Pension arrives with nothing deducted, which is why it feels untaxed. It is taxable income and it uses your personal allowance before anything else does.
Crossing the allowance does not mean a large bill
Only the amount above the allowance is taxed. On an excess of roughly 467 pounds, basic rate tax comes to about 93 pounds a year, not tax on the whole pension.
An ISA withdrawal is not income taxed at zero
It is not income at all. GOV.UK confirms it does not need to be declared on a tax return, so it cannot affect your allowance, your tax band, or a test that looks at taxable income.
The 3.9% rise is not confirmed
The triple lock uses the September CPI figure, published in October, and the increase is only settled when the uprating order goes before Parliament.
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Frequently Asked Questions
Key Takeaways
State pension tax is about to begin
The full new State Pension of 12,547.60 pounds a year leaves 22.40 pounds under the 12,570 pound personal allowance in 2026/27. A triple lock rise would remove it.
State pension tax arrives from somewhere else
The State Pension is paid gross. Any state pension tax due comes out of your tax code on other income, through Self Assessment, or through a Simple Assessment after the year ends.
ISA money sits outside the calculation entirely
GOV.UK confirms ISA income and gains are not taxed and are not declared on a tax return, so they cannot use up an allowance the State Pension has already claimed.
The pension keeps its own advantage
Tax relief on the way in and a 60,000 pound annual allowance mean a pension is not simply the worse wrapper. The two do different jobs at different stages of life.
Sources: GOV.UK new State Pension rates, GOV.UK income tax rates and allowances, GOV.UK how ISAs work, GOV.UK pension lump sum allowance, ONS average weekly earnings, September 2026, ONS consumer price inflation, August 2026 and the House of Commons Library briefing on frozen income tax thresholds. All figures verified 21 September 2026.
The information provided on this page and throughout the website is for general information purposes only and does not constitute financial advice. It is important that you conduct your own research and consider your own personal circumstances before making any investment decisions.
