Prison officer pension lump sum calculator

What this prison officer pension lump sum calculator does

If you are a prison officer in the Civil Service alpha pension scheme, you do not get a tax-free lump sum automatically when you retire. What you can do is give up part of your yearly pension in exchange for a one-off lump sum. This is called commutation. The calculator above shows you what that trade looks like in pounds, so you can see it before you ask your scheme administrator for a formal quote.

It has three views. Your result shows the lump sum you would receive, the yearly pension you would give up and the yearly pension you would keep. Break-even shows how many years it would take for the pension you gave up to have paid you the same amount as the lump sum, with and without yearly increases. Limits and tax free shows the HMRC limits that cap how much of your pension can be turned into a lump sum.

The calculator is free, needs no account, and runs in your browser. It works from the published rules as at 3 October 2026. It is a what-if tool, not a quote. Your administrator, which has been Capita since 1 December 2025, holds your real figures and is the only body that can tell you exactly what you could take.

How a lump sum works in the alpha scheme

Every active civil servant, including prison officers in England and Wales and in the Scottish Prison Service, has built up pension in alpha since 1 April 2022. Alpha is a career-average scheme: each scheme year you earn 2.32% of that year's pensionable earnings as pension, and the pension you have already built is increased each 1 April in line with CPI inflation while you are an active member.

Alpha has no automatic lump sum. Older sections of the scheme, such as classic, did: classic pays a lump sum of three times your pension without you having to ask for it. In alpha the only route to a lump sum is commutation under regulation 84 of the 2014 regulations. For every £1 a year of pension you give up, you are paid a lump sum of £12. So giving up £1,000 a year of pension gives you £12,000 in cash, and your pension falls by £1,000 a year for the rest of your life.

Three practical points follow from the rules. You must make the choice before your pension is first paid. Once your pension is in payment the choice cannot be reversed. And the amount you can take is limited by HMRC rules, which are covered below. If you retire early, the early-payment reduction is applied to your pension first and the lump sum is worked out from what is left.

Worked example: £1,000 a year for £12,000

Take a simple case. You give up £1,000 a year of pension and receive £12,000. Break-even is the point at which the pension you gave up would have paid you the same £12,000 in total. With a flat £1,000 a year and no increases, that is 12 years. If you retire at 60 and live to 72 or beyond, you will have received more in total by keeping the pension. If you live less than 12 years after retiring, you would have received more by taking the lump sum.

Real pensions in payment are not flat, because they are increased each April. If the pension you gave up would have risen by 2% a year, the break-even point comes earlier, at about 10.9 years. A higher rate of increase pulls it earlier again; a lower one pushes it later. For reference, public service pensions rose by 3.8% from 6 April 2026. That is one year's figure, not a promise about future years, which is why the calculator lets you set the assumption yourself.

What break-even does and does not tell you

Break-even is the most useful single number, but it is easy to over-read. It says nothing about how long you will live, which nobody knows. It does not include what you could do with the money, whether that is clearing a mortgage, paying off debt, or helping a family member. And it does not include tax on the pension you keep, which is taxed as income each year.

A shorter break-even makes the lump sum look less attractive, because you need to live fewer years for the pension to come out ahead. A longer break-even is the other way round. Neither is the right answer for everyone. The trade is permanent and affects your monthly income for life, so people in good health with no pressing need for cash often keep the pension, while others value a debt-free start to retirement. We do not tell you which to choose.

The HMRC limits on how much you can take

Two HMRC rules cap a pension lump sum, and the calculator applies both. The first is the 25% test: the lump sum cannot be more than a quarter of the total value of your benefits, with pension valued at 20 times its annual amount. With alpha's rate of £12 for every £1 given up, that works out as a limit of about 35.7% of your yearly pension that can be given up, because the fraction x of your pension you can commute satisfies 12x = 25% of (20 times what is left, plus the lump sum).

As an example, take a yearly pension of £10,000. The most you could commute under the 25% test is about £3,571 a year of pension, giving a lump sum of £42,857, and leaving a pension of £6,429 a year. The second rule is the lump sum allowance, which is £268,275 in 2026/27. The lifetime allowance was abolished on 6 April 2024 and the lump sum allowance replaced its role for tax-free cash. On the alpha rate, the allowance becomes the tighter limit once your pension is above roughly £62,600 a year, which is well beyond a prison officer's own alpha pension for most careers.

The scheme's own maximum is not something we can verify separately, so the result you see is the HMRC-limited figure. If Capita's quote is lower, the quote controls. Amounts above your lump sum allowance are not tax free, and how that would be taxed depends on your circumstances, so ask Capita or HMRC rather than relying on a general estimate.

Alpha compared with the older sections

Many serving officers hold service in more than one section, so the picture is rarely just alpha. Because of the McCloud remedy, if you were in an older section before alpha you will usually get a choice at retirement between your older benefits and alpha benefits for service between 1 April 2015 and 31 March 2022. That choice is made using a remediable service statement, which shows both options, and your lump sum position can differ depending on what you choose.

How retiring early changes the picture

You can take alpha pension early from age 55, rising to 57 from 6 April 2028, but the pension is permanently reduced. Alpha's normal pension age is the later of State Pension age and 65, and there is no lower pension age for prison officers in alpha. Anyone retiring early takes a reduction that depends on their age and normal pension age; the reduction is applied first and any lump sum is worked out from the reduced pension.

That matters for the lump sum. Early retirement shrinks the pension, so each £1 you commute is a larger share of a smaller pension, and the 25% limit bites at a lower lump sum. The factors the calculator uses are the historic Government Actuary's Department set. Capita's calculators use new factors for retirements on or after 1 November 2026, so treat any early-retirement figure here as an estimate and expect the quote to differ. For more on ages and options see our guides to prison officer pension age and early retirement.

Who tends to ask about commutation, and what to think about

• Debts at retirement. A mortgage or loan can be a reason to take cash, but compare the interest you would save with the pension you would give up for life.
• Your partner. A lump sum is paid to you; your pension is what pays a partner after you. Ask Capita how commutation affects any survivor pension before you elect (see the note above).
• Other income. If you have other pensions or savings, you may feel less need for the lump sum. If the alpha pension is most of your income, giving up part of it needs more thought.
• Health. Your own view of your health and family history is relevant to break-even, though we cannot say what it means for you.
• Tax position. The lump sum may be tax free within limits, but the pension you keep is taxed as income, and your total income affects your tax. A pension commentary from a regulated adviser is worth considering for large decisions.

What the calculator cannot tell you

• Your real pension. It uses the pension figure you enter or derive; your annual benefit statement and Capita's quote hold the actual number.
• Which of your pay counts as pensionable. We know basic pay does; we have not verified which allowances do, so check your payslip and HR.
• The effect of commutation on survivor benefits. Unverified; ask in writing.
• Your tax. It does not know your tax code, other income or the tax year you retire in.
• Future rules. Allowances, pension ages and factors can change. This page is dated 3 October 2026.
• Northern Ireland. Officers in the Northern Ireland Prison Service are in a separate NICS pension scheme, so alpha figures here should not be relied on for them.

How to use the result

1. Start with your pension forecast from your annual benefit statement, or the pension figure you expect at retirement.
2. Enter the amount of yearly pension you are thinking of giving up and see the lump sum, the pension left and the break-even.
3. Try a few inflation assumptions to see how break-even moves.
4. Check the HMRC limits tab so you know the ceiling.
5. Ask Capita for a formal quote showing the lump sum, the reduced pension and the effect on any survivor pension, and compare it with the calculator.
6. Remember that you elect before your pension is first paid and cannot undo it afterwards.