Around 37% of people aged 55 and over say they would prefer to phase into retirement by cutting back hours rather than stop work altogether. Yet the same research shows 40% worry their living costs will make a gradual transition impossible. For anyone with a defined contribution pension, the gap between wanting phased retirement and actually affording it often comes down to one thing: how you take the money out. The tax difference between taking everything in one go and spreading crystallisations across several years can run well into five figures.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
The pension freedoms introduced in 2015 changed the rules entirely. Before that, most people either bought an annuity or took their whole tax-free lump sum at retirement age. Now you can crystallise portions of your pension pot at different times, take 25% tax-free from each piece, and leave the rest invested. That opens a path for anyone who wants to keep earning part-time while drawing a controlled income from savings. But the rules around the Money Purchase Annual Allowance mean you cannot treat phased retirement as a simple tap you turn on and off. Here’s what you actually need to know.
The central idea is simple enough, but what I tend to notice is how many people overlook the annual allowance trap until after they have already triggered it. The order you take money matters more than how much you take. Semi-retirement can work well if the tax mechanics are lined up first.
The tax numbers that make or break a phased strategy
The most direct way to see the benefit of phasing is to compare two approaches to the same pot. Based on 2025/26 rates, a full crystallisation of a £400,000 pension pot gives you £100,000 tax-free cash and £300,000 of taxable income. The estimated tax on that £300,000 — assuming no other income — reaches roughly £117,432, because most of the drawdown falls into the 40% and 45% bands. Take the same £400,000 in five equal chunks of £80,000 a year, and each chunk delivers £20,000 tax-free and £60,000 taxable. The estimated tax per chunk drops to around £11,432, because most of the taxable income sits inside the basic-rate band. Over five years the total tax comes to about £57,160 — a saving of more than £60,000.
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| Approach | Tax-free cash | Taxable income | Estimated total tax |
|---|---|---|---|
| Full crystallisation (£400k at once) | £100,000 | £300,000 | ~£117,432 |
| Phased — per year (£80k × 5 years) | £20,000 | £60,000 | ~£11,432/yr |
| Phased — total over 5 years | £100,000 | £300,000 | ~£57,160 |
The personal allowance for 2025/26 is £12,570. Income below that is tax-free. The basic-rate band runs from £12,571 to £50,270. Between £50,271 and £125,140 you pay 40%. Above £125,140 it is 45%. And between £100,000 and £125,140, the personal allowance tapers at £1 for every £2 of income, creating an effective 60% marginal rate. For a phased retiree who also holds an ISA or has other savings, the personal savings allowance of £1,000 for basic-rate taxpayers (or £500 for higher-rate) means keeping annual income below £50,270 preserves both the personal allowance and the savings allowance. Those thresholds define where phasing delivers most of its value.
A practical scenario helps. Suppose someone earns £50,000 full-time and drops to three days a week, bringing their salary to £30,000. They need an extra £20,000 a year. From a £320,000 pension pot they could draw £15,000 as taxable income (from the crystallised portion) and take £5,000 a year as tax-free lump sum over four years. The £30,000 salary consumes the personal allowance of £12,570 and fills £17,430 of the basic-rate band. The £15,000 pension drawdown sits mostly in the remaining basic-rate space. The £5,000 tax-free lump sum falls outside the taxable calculation. The total annual income of £50,000 stays under the higher-rate threshold, and the personal savings allowance remains intact. The key is that the uncrystallised part of the pot (£240,000 in this example) stays invested and can grow during the phased period.
Three traps that catch most phased retirees
Taking the full 25% tax-free lump sum on day one
The instinct to take all tax-free cash at the start is understandable, but it defeats the purpose of phasing. Once you crystallise the entire pot, every subsequent withdrawal is fully taxable — you lose the ability to spread the tax-free element across multiple years. A better approach is to use UFPLS (uncrystallised funds pension lump sums) or staged crystallisations so that each year you get a fresh 25% tax-free portion. The difference over five years can exceed £10,000 in unnecessary tax, depending on your total income.
Triggering the MPAA while you are still contributing
This is the most expensive mistake. Say you are 58, working three days a week, and your employer pays 8% of your £30,000 salary (£2,400) into your workplace pension. You also pay in 5% (£1,500). Total contributions: £3,900 — well under the £10,000 MPAA. But if you take a £15,000 taxable withdrawal from a crystallised pot to top up your income, the MPAA kicks in. If you later get a promotion or switch to a job that pays £60,000 with a 10% employer contribution (£6,000) and a 10% employee contribution (£6,000), the combined £12,000 exceeds the £10,000 MPAA. The excess is taxed at your marginal rate. You can avoid this by taking only tax-free cash from crystallisations and delaying taxable withdrawals until you have stopped contributing to a pension.
Ignoring what the personal allowance taper does to a phased income
If your total income — part-time salary plus pension drawdown — pushes past £100,000, the personal allowance starts to shrink. Every £2 of income above £100,000 removes £1 of your £12,570 allowance. That means income between £100,000 and £125,140 faces an effective 60% marginal rate. For a phased retiree who also has rental income, investment dividends, or a spouse’s earnings in the household, the taper can wipe out much of the tax benefit of phasing. Modelling the withdrawal amount each year to stay under £100,000 (or £50,270 if you want to preserve the basic-rate band) is the single most effective way to protect the tax savings. A financial adviser specialising in retirement income can run the annual figures against your other income sources.
Setting up a phased retirement that holds together across the years
Open flexi-access drawdown on the right timeline
Flexi-access drawdown is the mechanism that makes phased retirement possible. You move some or all of your pension pot into a drawdown account, which remains invested. You can withdraw nothing in years when your part-time earnings are high, take £20,000 when you need a new car, or draw a regular monthly amount. There is no minimum withdrawal and no fixed schedule. The minimum age is 55 now, rising to 57 in April 2028. If you are 54 today, you have three years before access opens — so plan the timing of your first crystallisation around that shift. To set it up, contact your pension provider and ask to move money into a flexi-access drawdown account. Some providers charge an annual fee for drawdown; others do not. Compare the fee structure before committing.
Sequence withdrawals to use the personal allowance each year
Plan each tax year to use as much of the £12,570 personal allowance as possible without crossing into the 40% band unless you have to. If your part-time salary is £15,000, you have already used £15,000 of tax-free space — so any pension drawdown above that is taxed at 20%. But if your salary is only £8,000, you have £4,570 of unused personal allowance. A phased withdrawal of exactly £4,570 that year would be tax-free. Then take a separate UFPLS payment to get 25% tax-free cash on top. That pattern — filling the personal allowance first, then using the basic-rate band, then taking tax-free cash separately — keeps the effective tax rate on your pension income below 10% in most years.
Work around the MPAA if you plan to keep contributing
If you are still employed and paying into a workplace pension, the safest sequence is: crystallise a portion, take the 25% tax-free cash, but do not withdraw any taxable income until you have left that job or stopped contributions. That way the MPAA is never triggered, and your full £60,000 annual allowance remains available. Once you leave employment and want to start drawing taxable income, the MPAA will apply to future contributions — but if you are no longer working, that ceiling matters less. Anyone moving to self-employment in phased retirement should check how inflation affects their withdrawal rate over a 20-year horizon before setting the drawdown amount.
Watch for the 2028 age change and the frozen thresholds
The minimum pension access age rises from 55 to 57 on 6 April 2028. Anyone who turns 55 before that date is unaffected. But if your 55th birthday falls after 5 April 2028, you must wait until 57. That is a two-year gap that can disrupt a phased plan built around a specific age. Separately, the personal allowance is frozen at £12,570 until at least April 2031, and the higher-rate threshold at £50,270. Fiscal drag — the effect of frozen thresholds against rising prices — means a withdrawal amount that sits in the basic-rate band today may push into the 40% band within a few years if inflation outpaces the freeze. Factor that annual drift into your drawdown plan rather than setting a fixed number and forgetting it.
Does taking only tax-free cash from my pension trigger the MPAA? ▾
Can I use phased retirement with a defined benefit pension? ▾
What happens to my State Pension if I phase into retirement? ▾
Can I still contribute to a SIPP while drawing phased income? ▾
Is phased retirement more tax-efficient than buying an annuity? ▾
The MPAA clock does not stop — plan your exit from contributions first
The single most consequential decision in a phased retirement is the order in which you take tax-free cash, taxable drawdown, and pension contributions. Trigger the MPAA before you have finished building your pot and the annual contribution limit drops from sixty thousand pounds to ten — a ceiling that can trap a higher earner in an unwanted tax charge. Sequence the taxable withdrawals to start after your last employer contribution lands, and the MPAA becomes a minor constraint rather than a costly surprise. The frozen tax thresholds through 2031 mean the band you aim for today will be narrower in real terms each year, so review the withdrawal amount every spring rather than setting it once.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read the UK’s best value retirement hotspots.
Sources and Further Reading
Is semi-retirement the answer for UK workers? — Explores the practical trade-offs of reducing hours before full retirement, including the impact on National Insurance and pension contributions.
How to future-proof your finances against UK inflation in retirement — Explains how rising prices erode a fixed drawdown income and what withdrawal rates hold up over a 20-year retirement.
Pension Helper (2025). Phased Retirement Guide. 🔗
UK Pensions Guide (2025). Phased Retirement: How to Transition Gradually. 🔗
Restless (2025). How Can I Phase My Retirement? 🔗
Global Investments (2025). Phased Retirement Pension Strategy. 🔗
