Pillar Guide · Updated June 2026

UK Phased Retirement Guide 2026/27: Partial Pension Drawdown

Phased retirement lets you draw your pension gradually -- crystallising it in tranches, taking tax-free cash piece by piece, and keeping the rest invested until you need it. Done well, it can dramatically cut the tax you pay in retirement and improve estate-planning outcomes. Done badly, it can trigger the Money Purchase Annual Allowance (MPAA) and lock you out of further pension saving. This guide explains how partial crystallisation works in 2026/27, when the MPAA bites, how to sequence income sources, and how phased retirement interacts with work and the State Pension.

Last updated: 20 June 2026Last reviewed: 20 June 2026How we verify

What is Phased Retirement?

Phased retirement -- sometimes called flexible or staggered retirement -- means moving from full-time work to full retirement gradually, drawing on your pension pot in stages rather than all at once. It became significantly easier after the pension freedoms introduced in April 2015, which removed the requirement to buy an annuity and allowed unlimited flexi-access drawdown from defined contribution pensions.

In practice, phased retirement can take many forms. You might reduce from five days a week to three, replacing lost salary with pension drawdown. Or you might stop working entirely but start drawing only a modest pension income, leaving the majority of your pot untouched and invested. The key is that you are in control of the timing and size of each withdrawal.

This contrasts with traditional full crystallisation -- taking all your tax-free cash and putting your entire pot into drawdown or an annuity on one date -- which was the default approach when annuities were mandatory. Full crystallisation is simple but removes flexibility; phased crystallisation is more complex but can be far more tax-efficient.

Partial Crystallisation Explained

When you crystallise a pension, you designate a portion of the funds for drawdown or annuity purchase. At that point you can take up to 25% of the crystallised amount as a tax-free pension commencement lump sum (PCLS). The remaining 75% moves into a drawdown pot and is taxed as income when you withdraw it. Uncrystallised funds -- those you have not yet designated -- stay in your pension and can continue to grow.

In 2026/27 the total PCLS you can receive across all your pensions in your lifetime is capped at £268,275. This is sometimes called the pension commencement lump sum allowance. If you have already used some of this allowance from a previous crystallisation or a previous scheme, your remaining allowance is reduced accordingly. Under phased crystallisation you eat into this allowance gradually -- taking, say, £10,000 of PCLS each year rather than the full amount on day one.

An alternative route is the uncrystallised funds pension lump sum (UFPLS). Instead of designating funds to a drawdown pot, you simply withdraw a lump sum directly from uncrystallised funds: 25% is tax-free and 75% is taxed as income. A UFPLS is simpler to arrange but the tax-free element comes from the same £268,275 lifetime allowance, and crucially every UFPLS triggers the MPAA (see below).

Which route is better -- phased crystallisation or UFPLS -- depends on your circumstances. Phased crystallisation into drawdown gives you more control over when you take taxable income after crystallising. A UFPLS delivers both tax-free and taxable cash in one payment, which can be convenient but less flexible.

MPAA Trigger Risk

The Money Purchase Annual Allowance (MPAA) is one of the biggest traps in phased retirement. Once triggered, it cuts your annual allowance for money purchase pension contributions from £60,000 (the standard 2026/27 limit) to just £10,000, and you can no longer use carry forward to make larger contributions. For anyone still paying into a pension -- including through salary sacrifice or employer contributions -- this can be devastating.

The MPAA is triggered when you take taxable income flexibly from a defined contribution pension. This includes:

Drawing any amount from a flexi-access drawdown fund (even £1 of taxable income)
Taking a UFPLS (the 75% taxable portion triggers it)
Taking income from a capped drawdown fund that exceeds the cap

The MPAA is not triggered by:

Taking only your PCLS (25% tax-free cash) without drawing any taxable drawdown income
Buying a lifetime annuity with your drawdown or uncrystallised funds
Leaving funds in a capped drawdown fund and not exceeding the cap
Drawing from a defined benefit (final salary) pension

This means that someone who crystallises a tranche of their SIPP and takes the PCLS but leaves the 75% drawdown pot untouched can avoid triggering the MPAA -- for now. The trigger only fires when taxable income is actually drawn. If you plan to keep contributing to a pension while phasing retirement, delay drawing taxable drawdown income for as long as possible, and model whether it would be better to stop contributions before starting drawdown.

Tax Planning in Phased Retirement

The central tax opportunity in phased retirement is the ability to control how much taxable pension income you recognise each year. UK income tax bands for 2026/27 are:

Band	Income range	Rate
Personal Allowance	Up to £12,570	0%
Basic Rate	£12,571 -- £50,270	20%
Higher Rate	£50,271 -- £125,140	40%
Additional Rate	Above £125,140	45%

By limiting taxable pension withdrawals to the basic rate band each year, you pay a maximum of 20% on income above £12,570. If your only other income is modest part-time earnings or savings interest, you have significant headroom to draw pension income at 20% rather than 40%.

The PCLS element (25% of each crystallised tranche) is completely free of income tax. This makes it worth crystallising enough each year to fully use your personal allowance with taxable drawdown income, while also harvesting PCLS. If you crystallise £80,000, you get £20,000 PCLS tax-free and could draw up to £12,570 of the taxable drawdown funds each year at 0% -- effectively tax-free retirement income.

Watch out for the first-payment emergency tax problem. HMRC often applies an emergency month-1 tax code to the first drawdown payment, withholding far too much tax. You can reclaim the overpayment using form P55 (drawdown) or P50Z (if you have stopped work) -- do not wait until the end of the tax year if the overpayment is large.

Working While Drawing Pension

There is no rule preventing you from working and drawing a pension at the same time, provided you have reached the minimum pension access age (currently 55, rising to 57 in April 2028). Many people use phased retirement precisely to bridge the gap between reduced working hours and full retirement -- replacing lost salary with controlled pension withdrawals.

The key risk is the MPAA. If you are still employed and your employer contributes to your pension, triggering the MPAA could create a problem immediately. Employer contributions -- including salary sacrifice amounts -- count towards the £10,000 MPAA limit. A £10,000 annual employer contribution would use the entire MPAA, leaving you unable to make any personal contributions at all.

If you are a higher earner still contributing large amounts to your pension, you should generally keep the MPAA dormant for as long as possible. This might mean:

Drawing only PCLS (tax-free cash) from pension tranches without touching drawdown income
Using ISA withdrawals or other savings to replace income before touching drawdown
Stopping pension contributions before triggering flexible access if the maths favours it

You must also notify your pension provider when the MPAA is triggered, and they are required to send you a trigger notice. Keep this notice -- you will need it for Self Assessment.

State Pension Interaction

The full new State Pension in 2026/27 is £241.30 per week (approximately £12,548 per year). This is almost exactly equal to the personal allowance of £12,570. That alignment is significant: once you start drawing the State Pension, it uses up almost your entire personal allowance, meaning any further pension drawdown income will be taxed from the first pound at 20%.

This changes the calculus of phased retirement considerably. If you are phasing retirement before State Pension age (currently 66, rising to 67), you can use your personal allowance to draw up to £12,570 of pension income tax-free each year. Once the State Pension starts, that benefit disappears -- the State Pension fills the allowance.

This makes the period between private pension access age and State Pension age a particularly valuable window for tax-efficient drawdown. Some people deliberately draw more pension income in those years to build up cash reserves or ISA balances, knowing that once the State Pension starts, the same drawdown will cost 20% in tax.

One option is to defer the State Pension (see our separate State Pension deferral guide) while maximising tax-free private pension drawdown in the interim. Whether this makes sense depends on your health, other income, and how much you have in your private pot.

Income Sequencing Strategy

A well-structured phased retirement plan sequences income sources to minimise lifetime tax. A common framework, working from most to least tax-efficient:

ISA withdrawals -- completely tax-free and no impact on allowances or benefits calculations. Use these first to cover living costs if available.
Pension PCLS (25% tax-free cash) -- take this through staged crystallisations without yet drawing taxable drawdown, preserving the MPAA dormant.
Taxable drawdown income -- once ISA and PCLS are depleted, draw from the taxable drawdown pot, targeting the basic rate band each year (up to £50,270 total income including State Pension once it starts).
State Pension -- begin drawing at 66 (or defer for a higher amount), knowing it will consume most or all of the personal allowance.

Estate planning also matters. Uncrystallised pension funds currently fall outside the estate for Inheritance Tax purposes, so there is an argument for leaving as much as possible in the pension and spending other assets first. However, pension IHT treatment is subject to proposed legislative change -- take advice if estate planning is a priority.

Use our pension calculator and FIRE calculator to model how different sequencing strategies affect your pot longevity and lifetime tax.

Official References

FAQs

What is phased retirement?

Phased retirement means drawing your pension gradually rather than all at once. Instead of crystallising your entire pot on a single date, you access it in stages -- crystallising a portion each year or when you need income. This lets you take tax-free cash and taxable drawdown income in manageable tranches while leaving the rest of your pot invested in uncrystallised funds that can continue to grow. It is particularly popular with people who reduce working hours before stopping altogether.

What does "crystallising" a pension mean?

Crystallising a pension means designating funds for drawdown or annuity purchase, which triggers your entitlement to take a tax-free pension commencement lump sum (PCLS). In 2026/27 the lifetime PCLS limit is £268,275 across all your pensions. Once funds are crystallised they sit in a drawdown pot from which you can take income; the uncrystallised portion stays invested under different rules. You do not have to crystallise everything at once -- phased crystallisation lets you trigger PCLS in separate tranches over multiple years.

How does partial crystallisation work in practice?

Say you have a £400,000 SIPP and want £20,000 gross income this tax year. You could crystallise £80,000 of the pot: 25% (£20,000) comes out as tax-free PCLS and the remaining £60,000 moves into a drawdown fund from which you draw £20,000 taxable income (though in practice you would spread this across the year). The other £320,000 stays uncrystallised. Next year you repeat the process with another tranche. This drip-feed approach can be very tax-efficient if your other income is modest.

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Does phased drawdown trigger the Money Purchase Annual Allowance (MPAA)?

Yes -- taking taxable income from a flexi-access drawdown fund or an uncrystallised funds pension lump sum (UFPLS) beyond the tax-free element triggers the MPAA. Once triggered, you can only put £10,000 per year into money purchase pensions with tax relief, and carry forward is not available against those contributions. If you are still contributing to a pension while phasing retirement this is a critical consideration. Taking only the 25% PCLS without drawing any taxable drawdown income does not trigger the MPAA.

Can I work and draw a pension at the same time?

Yes. There is no legal bar to working while drawing a pension in the UK from age 55 (rising to 57 in 2028). However, if you draw taxable pension income you trigger the MPAA, capping further pension contributions at £10,000 a year. If you remain employed and your employer contributes to a pension, those employer contributions count toward the £10,000 limit. People who want to keep making significant pension contributions while working part-time should avoid triggering flexible access until contributions are no longer important.

What is a UFPLS and how does it fit into phased retirement?

An uncrystallised funds pension lump sum (UFPLS) is a payment taken directly from uncrystallised funds: 25% of each payment comes out tax-free and 75% is taxed as income. Unlike phased crystallisation, you do not designate funds to a drawdown pot -- you simply take a lump sum payment and the rest of the pot stays uncrystallised. UFPLS payments are simple to arrange but they do trigger the MPAA. They can be useful for one-off cash needs without setting up a formal drawdown arrangement.

How should I sequence my income sources in phased retirement?

A common approach is to use savings and ISA withdrawals first (tax-free and no MPAA risk), then draw taxable pension income only when needed to stay within the basic rate band (20% up to £50,270 in 2026/27). Using the £12,570 personal allowance each year means up to £12,570 of pension income is entirely tax-free. Delaying the State Pension through deferral while living on crystallised pension income is another option that grows the eventual weekly amount. Sequencing also affects Inheritance Tax: uncrystallised pension funds typically fall outside the estate under current rules.

How does phased retirement affect my tax position?

Income from pension drawdown is taxed as earnings in the year you receive it. By controlling how much you crystallise each year you can manage your annual taxable income -- aiming to stay within the basic rate band (£12,571-£50,270 in 2026/27) to pay only 20% tax rather than 40%. You can also combine the personal allowance and the starting rate for savings to reduce tax. If you receive an emergency tax code on your first drawdown payment (common on first crystallisation), HMRC will usually correct this through your Self Assessment or you can reclaim using form P55.

What happens to uncrystallised funds when I die?

Uncrystallised pension funds can currently be passed to nominated beneficiaries free of Inheritance Tax and, if you die before 75, usually free of Income Tax too. If you die at 75 or older, beneficiaries pay Income Tax on any pension income they draw at their own marginal rate. This makes leaving uncrystallised funds intact as long as possible a useful estate-planning tool. Note that pension rules and IHT treatment are subject to legislative change -- proposals have been announced that may bring some pension assets into the IHT net from 2027, so take advice if this affects your planning.

At what age can I start phased retirement?

The minimum pension access age is currently 55, rising to 57 in April 2028 for most people. Some older pension schemes have protected pension ages that allow earlier access -- check with your provider. There is no maximum age for drawing down, though you must designate remaining funds by age 75 under most modern pension rules. State Pension cannot be drawn before State Pension age (66 currently, rising to 67 between 2026 and 2028), so phased retirement before that age relies entirely on private pension and other savings.

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About the author

Emma Clarke

UK Tax Writer

Emma Clarke has been writing about UK personal tax since 2018, with a particular focus on Self Assessment, PAYE coding and the practical mechanics of how HMRC actually applies the rules to ordinary salaries. Her work concentrates on translating the dense language of HMRC manuals and Finance Act schedules into worked examples that show, pound by pound, how income tax and National Insurance reduce a gross salary to the figure that lands in a UK bank account. Emma covers the full PAYE lifecycle: tax codes (1257L, BR, K codes, emergency codes), the Marriage Allowance, the High Income Child Benefit Charge, salary sacrifice arrangements and their effect on pensionable pay, the Apprenticeship Levy, and the differences between the rUK and Scottish income-tax regimes. She is particularly interested in the edge cases that catch PAYE employees out — the £100,000 personal-allowance taper, the 60% effective marginal rate it creates, and the interaction between student-loan plans and pension contributions. Every figure in Emma's articles is verified against the current HMRC rates pages and worked through a Self Assessment calculation by hand before publication. She writes to CalcHub's editorial standards: primary-source citations, plain English, no promotional language, and clear "this is general information, not financial advice" disclaimers where appropriate.

Personal-finance writer since 2018
UK tax specialism — PAYE, Self Assessment, National Insurance
Writes to CalcHub editorial standards (primary-source citation, annual review)

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Disclaimer: This guide reflects 2026/27 UK pension rules including the £268,275 PCLS allowance, £60,000 annual allowance, £10,000 MPAA, and income tax bands. Pension rules, IHT treatment of pension funds, and minimum access ages are subject to legislative change. Phased retirement involves complex interactions between tax, benefits and estate planning. Consult a qualified independent financial adviser before making decisions, and refer to gov.uk for current rules.