The 25% tax-free lump sum: how it works
From age 55 (rising to 57 in April 2028), you can normally take 25% of your defined-contribution pension pot as a tax-free lump sum. The mechanics are simple, but the decisions around timing and structure are some of the most consequential of your retirement.
The rule in one paragraph
For most pension savers, 25% of your pension pot can be withdrawn without paying any income tax. The remaining 75% is taxable when withdrawn, at your marginal rate. The tax-free portion is officially called the Pension Commencement Lump Sum (PCLS) or "tax-free cash". It is capped in absolute terms at £268,275 across all your pensions combined.
The cap on very large pots
The £268,275 cap was introduced in April 2024 when the Lifetime Allowance (LTA) was abolished. The cap is set at 25% of the old LTA figure of £1,073,100. If your total pension wealth exceeds that, you cannot take 25% of the full pot tax-free — you can only take £268,275.
Some savers had "protected" higher LTAs from earlier rules (Fixed Protection 2016, Individual Protection 2014, etc.). If you have any of these, your tax-free cap may be higher; check with your provider.
Three ways to take it
- All in one go. Take the full 25% as a single tax-free lump sum, and either move the remaining 75% into drawdown, leave it invested in the pension, or buy an annuity. This is operationally simple but is rarely the most tax-efficient choice.
- Slice by slice (UFPLS). Each withdrawal is 25% tax-free and 75% taxable. Useful when you want regular cashflow with a lower tax bill. "UFPLS" stands for "Uncrystallised Funds Pension Lump Sum".
- Phased drawdown. "Crystallise" small chunks of the pension at a time. Each chunk releases its 25% tax-free portion immediately; the 75% balance moves into drawdown. This is the most flexible approach and the one most often used in practice.
Why "all in one go" is rarely optimal
Once outside the pension, the tax-free lump sum is exposed to inheritance tax, savings tax (if held as cash), and capital gains tax (if invested in a non-Individual Savings Account (ISA)). Inside the pension, the lump sum is part of an inheritance tax (IHT)-protected wrapper (with the 2027 changes, this becomes more nuanced). For most retirees, the optimal strategy is to take the tax-free portion gradually, only as needed for actual spending or to fill an ISA.
A common mistake is taking the full lump sum at 55 with no plan for it. The money sits in a savings account earning below-inflation interest while taxable income rates eat into the rest of the pension. Run the alternative — leave it in the pension, invested — and the difference over 25 years is often £100,000+.
Interaction with the personal allowance
The tax-free lump sum doesn't count as income, so it doesn't use up your £12,570 personal allowance. This is important: you can take a small tax-free lump sum AND draw your full personal allowance from the taxable portion of the pension, keeping all £12,570 + lump sum entirely tax-free in any given year.
Combined with the State Pension (around £11,500 a year), most retirees can structure their first decade of drawdown to pay almost no income tax — by mixing taxable pension withdrawals up to the personal allowance, tax-free lump sum slices, and ISA withdrawals.
Watch-outs
- The "MPAA" trap. Once you take any taxable income from a defined-contribution pension (anything other than the tax-free lump sum), your future annual allowance for pension contributions drops from £60,000 to £10,000. Triggering the MPAA accidentally is one of the most common pension planning mistakes.
- Defined-benefit pensions. The 25% rule still applies to most defined-benefit (DB) pensions, but the calculation uses a "commutation factor" — usually 12:1 to 24:1 — which can make the tax-free lump sum poor value relative to the pension income forgone.
- Inheritance changes. From April 2027, pensions become part of the estate for IHT purposes, changing some long-standing planning patterns. Updates to this article will follow.
Run your own numbers
The planner models phased lump sum drawdown by default, applying the 25% tax-free portion to each withdrawal slice and showing the impact on net spending across retirement.