Dropping to a Four-Day Week Before Retirement: How Much Drawdown Do You Actually Need?

Why More People Are Phasing Out Rather Than Stopping in One Step

Full retirement on a single date — working Friday, retired Monday — is increasingly being replaced by a gradual transition: cutting to four days, then perhaps three, over several years before stopping entirely. It suits people who enjoy their work but not the full five-day commitment, and it can smooth the psychological and financial shock of retirement.

The financial mechanics are more complex than a full stop, though, because you're mixing three income sources — reduced salary, State Pension (once eligible), and pension drawdown — and one of those choices (taxable drawdown) has a permanent side effect on your ability to keep saving.

Case Study: Alan, Age 62, Dropping From Five Days to Four

Alan earns £45,000 full-time and wants to move to a four-day week two years before his planned full retirement at 64. His pro-rata salary drops as follows:

Alan's monthly net pay falls by roughly £510. He has a £280,000 defined contribution pension pot and wants to fill the gap partly through his pension rather than cutting spending.

Filling the Gap: Tax-Free Cash First, Then Drawdown

Alan takes his 25% tax-free lump sum in stages rather than all at once, using part of it to top up his reduced salary without triggering the MPAA (the tax-free element on its own doesn't trigger it — only taking taxable income from the flexible part does).

By using tax-free cash rather than taxable drawdown, Alan covers most of his income gap (£6,000 of the roughly £9,000 shortfall) without touching the MPAA at all, leaving room to keep contributing to his workplace pension at more than the £10,000 restricted level if he wanted to.

If Alan instead needed to draw taxable income from the flexible part of his pot — say an extra £4,000/year beyond his tax-free cash — the MPAA would immediately drop his personal pension contribution allowance from £60,000 to £10,000/year. For most people still contributing well under £10,000/year in their early 60s, this isn't a binding constraint, but higher earners still making large contributions need to check before triggering drawdown.

and can help you project how tax-free cash and any drawdown affect your remaining pot value over the transition years.

The Long-Term Cost of Starting Drawdown a Few Years Early

Every pound drawn down before full retirement is a pound that stops compounding. A simplified comparison over Alan's 2-year transition, assuming a 5% annual growth rate on the pot:

The gap between the two scenarios (roughly £8,400) is the extra cost of relying on taxable drawdown rather than tax-free cash and salary alone — on top of triggering the MPAA.

What About State Pension Timing?

Alan's State Pension doesn't start until age 66 (rising to 67 by 2028), so during his four-day-week transition at 62-64 he has no State Pension income at all — the entire gap has to come from salary and his own pension pot. This is a common oversight: people assume the State Pension will help bridge a phased retirement, but for most it doesn't arrive until several years later.

A Simple Framework for Planning a Phased Transition

1. Work out the real cash gap between your current and reduced salary — usually roughly proportional to the days cut, but check your specific pay structure.
2. Use tax-free cash before taxable drawdown wherever possible, to delay triggering the MPAA.
3. Check whether you're still under 55 (or 57 from 2028) — if so, the gap must come from ISA/savings, not pension access at all.
4. Keep contributing to your workplace pension on the reduced salary if you can — auto-enrolment minimums still apply and compounding is still working in your favour.
5. Model the long-term pot impact, not just the immediate income gap — a few years of early drawdown has a compounding cost that's easy to underestimate.

A four-day week before full retirement can be a genuinely good way to ease into retirement, but it works best when the drawdown decisions are sequenced carefully rather than treated as "just take out what I need."