UK State Pension Increase Calculator: Triple Lock Uprating
Work out the percentage increase in the UK State Pension under the triple lock — and the annual and weekly pound rise — when the pension is uprated each April.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Pension increase | Annual rise |
|---|---|---|
| £10,000 to £10,850 (8.5% triple lock) | 8.50% | 850 |
| £11,500 to £11,787.50 (2.5% floor) | 2.50% | 287.5 |
| £10,600 to £11,502 (8.5%) | 8.51% | 902 |
| £10,000 to £10,410 (4.1% earnings) | 4.10% | 410 |
How This Calculator Works
Enter your current and new annual State Pension. The calculator finds the percentage increase and the annual difference. Divide the annual rise by 52 to see the weekly increase (the State Pension is paid weekly/four-weekly). To project a new pension from a known uprating percentage, multiply your current pension by (1 + %).
The Formula
Percentage Change
Old is the starting value, New is the ending value
Worked Example
A State Pension rising from £10,000 to £10,850 a year is an 8.5% increase — £850 more a year (about £16.35 a week). The 'triple lock' is the UK government's commitment to increase the State Pension each April by the highest of three measures: average earnings growth, inflation (CPI), or 2.5%. So in a high-earnings or high-inflation year the rise is larger; in a quiet year it's the 2.5% floor. This calculator shows the resulting percentage and pound increase between two years.
Key Insight
The triple lock is one of the most significant — and debated — features of UK retirement policy, and understanding it helps pensioners anticipate their annual rise. Each April the State Pension is uprated by the highest of: (1) average earnings growth (measured over a set period the previous year), (2) CPI inflation (measured to the previous September), or (3) a 2.5% minimum 'floor'. This guarantees the pension at least keeps pace with the better of prices and wages, and never rises less than 2.5% — which over time has lifted the State Pension's value relative to earnings. A few points: the triple lock applies to the basic and new State Pension (the calculation can differ for additional/earnings-related components, which are typically uprated by CPI only); it's a political commitment rather than permanent law, so it's periodically reviewed and could change; and the rising State Pension interacts with income tax — because the personal allowance has been frozen, more pensioners are being drawn into paying income tax as the pension rises (a 'fiscal drag' effect), so a gross increase may be partly taxed for those with other income. For planning, the percentage here shows the uprating's size and the weekly/annual pound effect on your budget. To estimate next year's pension before it's announced, the safe assumption is at least the 2.5% floor, with more in high-inflation or high-earnings years. This is the headline uprating; your actual taxable position depends on your total income against the (frozen) personal allowance.
Frequently Asked Questions
How is the State Pension increase calculated?
Subtract the old annual pension from the new one, divide by the old amount, and multiply by 100. From £10,000 to £10,850 is an 8.5% increase — £850 a year (about £16.35 a week). To project from a known uprating percentage, multiply your current pension by (1 + %).
What is the triple lock?
The government's commitment to increase the State Pension each April by the highest of three measures: average earnings growth, CPI inflation, or a 2.5% minimum. So the rise is larger in high-earnings or high-inflation years and falls back to the 2.5% floor in quiet years — guaranteeing the pension keeps pace with the better of prices and wages.
When is the State Pension uprated?
Each April. The earnings measure is taken over a set period the previous year and the inflation measure to the previous September, with the higher of those (or 2.5%) announced in advance and applied from the start of the new tax year in April.
Does the triple lock apply to my whole pension?
It applies to the basic and new State Pension. Additional or earnings-related components (like the old State Second Pension/SERPS) are typically uprated by CPI only, not the full triple lock. So if your pension includes such components, the overall increase may blend the triple-lock and CPI rates.
Will my pension rise be taxed?
Possibly. The State Pension is taxable income, and because the personal allowance has been frozen, rising pensions are drawing more pensioners into paying income tax ('fiscal drag'). If your total income exceeds the personal allowance, part of the increase is effectively taxed — so the gross uprating shown here may not all reach your pocket.
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Methodology & Review
The increase is the change between the new and old annual State Pension divided by the old amount, multiplied by 100. It compares your pension before and after the annual uprating; it does not determine which triple-lock measure applies or model income tax on pension income.
Written by Ugo Candido · Last updated May 22, 2026.