What Is Phased Drawdown?
Phased drawdown is the practice of crystallising a pension fund in tranches over time, rather than moving the entire fund into drawdown in a single event. Each tranche generates a pension commencement lump sum (PCLS — typically 25% of the tranche, tax-free) and moves the remaining 75% into a flexi-access drawdown (FAD) fund.
The portion of the pension not yet crystallised — the uncrystallised fund — remains in the pension wrapper, continues to grow (or fall) in line with investment performance, and is not subject to income tax until taken.
This approach stands in contrast to the alternative of crystallising everything at once: taking a large PCLS from the full fund, then moving the entire remaining amount into drawdown immediately.
Why Phase the Crystallisation?
1. Income Tax Management
When you crystallise a pension and take income from the drawdown pot, that income is subject to income tax at your marginal rate. If you crystallise £1,000,000 at once and draw £75,000 per year, you are drawing at your marginal rate on all of it — which may include higher rate (40%) or even additional rate (45%) tax on a substantial portion.
By contrast, if you crystallise only £80,000 in year one (taking £20,000 PCLS and moving £60,000 into drawdown), you control your taxable income precisely. You draw only what you need, keeping income within the basic rate band.
Over a 20–30 year retirement, the cumulative tax saving from keeping income within lower bands can be extremely large — often hundreds of thousands of pounds on a substantial pension pot.
2. The 60% Personal Allowance Trap
Income between £100,000 and £125,140 is effectively taxed at 60% due to the withdrawal of the personal allowance. Crystallising large pension tranches in a single tax year risks creating this problem unnecessarily.
Phased drawdown lets you manage the annual crystallisation amount so that taxable income never crosses £100,000 — or if it does, only briefly, with a plan to manage it.
3. Tax-Free Cash Over Time
Phased drawdown generates a PCLS payment with each tranche crystallised. Rather than taking all tax-free cash upfront (where it may not be needed immediately and must be invested or spent), phased crystallisation matches the PCLS to genuine income needs year by year.
This also helps where the individual does not need all the cash immediately — the tax-free cash element of a phased strategy is received progressively rather than in one large payment.
Important limit: The total lifetime PCLS is capped by the Lump Sum Allowance (LSA) of £268,275 (as of 2026). Once this is exhausted, no further tax-free cash is available regardless of how the remaining pension is crystallised. Planning should track LSA usage across all crystallisation events.
4. Death Benefits
For individuals with significant pension pots, the death benefit position before April 2027 is particularly important. Uncrystallised funds passing on death before age 75 are tax-free for beneficiaries (they can take lump sums or drawdown income free of income tax). Crystallised funds in a drawdown account pass to beneficiaries who pay their own marginal rate if the member is over 75, and are tax-free if the member dies before 75.
By keeping a large portion of the pension uncrystallised — as phased drawdown does — more of the fund is accessible tax-free to beneficiaries on early death. This is a meaningful estate planning benefit, particularly in early retirement years.
Note: From 6 April 2027, unused pension funds are brought within the inheritance tax estate. This was legislated in Finance Act 2026 (Royal Assent 18 March 2026), with personal representatives liable for any IHT due. The death benefit position changes materially from that date, and planning should account for this.
How Phased Drawdown Works Mechanically
Most modern SIPPs and personal pension platforms support phased drawdown without requiring the creation of multiple separate sub-funds — though the underlying structure is that each crystallised tranche forms a separate drawdown fund.
The practical steps:
- Set up the SIPP/personal pension with an appropriate investment strategy. Typically, an asset allocation that matches your income needs and time horizon.
- Decide the annual crystallisation amount — usually driven by the income you need. If you need £40,000/year and want to avoid higher rate tax (keeping income below the higher rate threshold of £50,270 for 2026/27), you may crystallise £40,000 (taking £10,000 PCLS + £30,000 into drawdown from which you draw £30,000), supplemented by other income sources.
- Instruct the provider to crystallise a specified tranche, take the PCLS, and move the remainder to drawdown.
- Draw income from the drawdown fund. The PCLS is paid immediately; drawdown income is taken as needed.
- Repeat annually (or as often as income needs require) until the fund is exhausted or a different strategy is adopted.
Phased Drawdown vs. Uncrystallised Fund Pension Lump Sum (UFPLS)
An alternative to phased drawdown is the UFPLS (Uncrystallised Fund Pension Lump Sum) approach. Rather than formally crystallising a tranche and designating it to drawdown, a UFPLS pays a lump sum directly from the uncrystallised fund — 25% tax-free, 75% taxable — in one payment.
The key difference:
- UFPLS: Simpler administratively; no separate drawdown fund created; each UFPLS payment is a single transaction. However, the UFPLS triggers the MPAA (Money Purchase Annual Allowance — £10,000 — which caps future money purchase pension contributions).
- Phased FAD: Taking PCLS and designating to drawdown does not trigger the MPAA (provided you do not draw flexibly from the drawdown fund — merely designating to drawdown without drawing income does not trigger MPAA). Once income is taken from the drawdown fund, MPAA is triggered.
For individuals who are still contributing to pensions (for example, part-time workers post-retirement), avoiding MPAA triggering is important — phased drawdown with careful management of drawdown income can preserve the full annual allowance for contributions.
Integrating State Pension and Other Income
State Pension income (around £12,550 per year at the full New State Pension in 2026/27) plus drawdown income together may use up most or all of the personal allowance and basic rate band, leaving limited room for additional pension income without higher rate tax.
Phased drawdown planning should be modelled against:
- State Pension start date (and whether deferral is being considered).
- Rental income or other portfolio income.
- DB pension income (if applicable).
- ISA drawdown (tax-free, does not affect marginal rate calculation).
- Any employment income from part-time work.
The combination of these sources determines how much pension drawdown can be taken at basic rate — and therefore how much to crystallise each year.
Investment Strategy Within Phased Drawdown
The uncrystallised portion of the pension continues to be invested in the original asset allocation. As tranches are crystallised and moved to drawdown, the drawdown fund needs its own investment strategy — typically more focused on income generation and capital preservation than accumulation.
A common approach is to hold different asset allocations across:
- Near-term drawdown pot (1–3 years): Lower volatility assets (cash, short-duration bonds) from which income is taken.
- Medium-term pot (3–7 years): Mixed allocation, moderate risk.
- Long-term uncrystallised pot (7+ years): Higher growth allocation — equities, diversified assets.
This "bucket" approach matches liability duration to asset risk and provides income stability even in volatile markets.
Platform Considerations
Not all pension platforms support flexible phased drawdown elegantly. Key features to look for:
- Online crystallisation instructions — ability to designate tranches without telephoning or using paper forms.
- Automatic regular PCLS and income payments — some providers offer programmatic drawdown where amounts are automatically crystallised and paid on a schedule.
- Segmented fund tracking — visibility of uncrystallised vs. crystallised balances.
- Low charges for deferred crystallisation — ensure there are no penalties or additional charges for maintaining an uncrystallised balance alongside a drawdown pot.
Compliance and Risk Warnings
Phased drawdown requires careful planning and ongoing management. Mistakes in the amount crystallised in any tax year — particularly those that push income into higher rate bands or exhaust the LSA prematurely — can be difficult to remedy.
The pension rules surrounding phased drawdown, the LSA, MPAA, and death benefits are complex and subject to change. Particularly in respect of the expected inheritance tax changes from April 2027, the death benefit element of phased drawdown strategy will need to be revisited.
Pension investments can fall as well as rise. Drawdown, unlike an annuity, provides no guarantee of income — the fund may be depleted if investment returns are poor and withdrawals are too high. Sequencing risk (poor returns in early retirement) is a particular concern. Professional regulated financial advice is strongly recommended before committing to any drawdown strategy.
How Global Investments Can Help
Phased drawdown is one of the most powerful tools available in UK retirement income planning — but it requires an integrated view of your pension, other income sources, tax position, estate planning objectives, and investment strategy.
At Global Investments, we work with clients to design and implement retirement income strategies that are both tax-efficient and resilient. We work alongside FCA-regulated financial advisers and tax specialists to ensure your phased drawdown plan is properly structured, investment strategy is appropriate, and annual reviews keep the plan on track as circumstances change.
Contact Global Investments to begin a retirement income review.
This guide is for general information only and does not constitute financial, legal or tax advice. Pension rules, tax rates and programme details change; verify current requirements with a qualified and FCA-regulated pensions adviser before acting. Pension transfers involving defined benefits over £30,000 require regulated advice.