The allowance that stays still while pensions rise

Two numbers govern whether a pensioner pays Income Tax. One of them has moved every April for five years. The other has not moved since 2021. The distance between them has been closing steadily, and for anyone on the full new State Pension it is now very nearly nothing.

No policy was announced to tax pensions more heavily. The effect comes entirely from one figure rising while the other stands still.

The two numbers

The Personal Allowance is the amount of income a person can receive in a tax year before Income Tax becomes due. It has been £12,570 since the 2021/22 tax year.

The full new State Pension is uprated each April under the Triple Lock. In 2021/22 it was £179.60 a week. For 2026/27 it is £241.30 a week, following the 4.8% increase applied on 6 April 2026.

Term explained: fiscal drag

What happens when incomes rise while tax thresholds are held still. More income falls above the threshold, so more tax is collected, without any tax rate being changed.

Watching the gap close

Set the two side by side across the frozen period. The pension column is 52 weeks at the published full new rate for each year; the allowance column is unchanged throughout.

Illustration only. Arithmetic on the published full standard weekly rates multiplied by 52, against the unchanged allowance. It describes somebody on exactly the full new rate with no other elements — not a typical individual entitlement.

In 2021 there was more than £3,000 of allowance available for other income. For 2026/27, on the same full rate, there is £22.40.

What that means in practice

The full new State Pension on its own still sits below the allowance, so on its own it generally produces no tax. The change is what happens to everything else.

• A small workplace pension that used to fit inside the remaining allowance is now largely taxable.
• Savings interest that was previously covered may now fall above the line, although the separate savings allowances also come into it.
• Part-time earnings in retirement are taxed from close to the first pound.

Because a State Pension is paid without tax deducted, the collection happens elsewhere — usually through the tax code on that other pension or job, as set out in nobody deducts tax from your State Pension.

Why more pensioners now hear from HMRC

The arithmetic above explains a trend that has been visible for several years: more people in retirement receiving tax calculations, more Simple Assessment letters, and more tax codes being adjusted mid-year.

None of that is a new tax on pensions. It is the same tax reaching further, because the threshold has not moved with the income. HMRC publishes statistics on taxpayer numbers by age group, and the direction of travel in them follows the same logic.

What could change it

Two things would narrow the problem. The allowance could be raised, which has been announced as the intention from April 2028, when thresholds are expected to be uprated in line with inflation again. Or the pension uprating could slow, which depends on the three measures compared each autumn and is nobody's preferred solution.

Until one of those happens, the gap continues to behave in the same direction. We cover the uprating mechanism itself in how three numbers decide next year's pension.

Things worth checking

Marriage Allowance. Where one partner has income below the Personal Allowance and the other is a basic-rate taxpayer, part of the allowance can be transferred between them. It is claimed, not automatic.

Your tax code. A code built on an estimated State Pension figure can be wrong, and the April uprating is exactly the moment at which estimates go stale. Coding notices are worth reading.

The savings allowances. Interest has its own separate allowances, which sit alongside the Personal Allowance rather than inside it. Those are easy to overlook when doing a rough calculation.

What to take from it

If your pension went up in April and your take-home income went up by less, there is usually no error to find. One number rose and the other did not, and the difference between the gross increase and the net increase is where the tax went. The Personal Allowance is the figure to look up alongside any pension rate, because neither of them means much without the other.