£900,000 pension pot: income, tax and how long it lasts
£900,000 is large enough that the State Pension becomes a top-up rather than the foundation — it supplies about 48% of income retiring at 50, falling to 36% at 60. The bridge to 67 costs only 21% of the pot. At this size the binding constraints are no longer whether the money lasts but how much of it reaches you after tax and in what order you draw it.
On our assumptions £900,000 clears the £32,700 the PLSA links to a moderate single-person retirement from age 50 onwards. Stop earlier than that and the same pot still works, but at a ‘minimum’ rather than ‘moderate’ standard of living.
£900,000 by retirement age
Every figure below is the highest income the pot can sustain while still lasting to age 95, net of tax and in today’s money. Pick an age for the year-by-year projection, the tax profile and the assumptions behind it.
Other pot sizes
Same assumptions, different starting pot — useful if you are still building and want to see what another £50k or £100k actually buys you.
What this means as a withdrawal rate
£900,000 draws 4.3% in the first year retiring at 50 and 5.0% retiring at 60 — either side of the 4% rule rather than far from it. This is the pot size at which conventional withdrawal-rate reasoning starts to apply properly, because the pot is genuinely being asked to last rather than to bridge.
Worth knowing what the 4% rule leaves out: it takes no account of the State Pension, which on this plan supplies 36–48% of income from 67. Applied literally to a UK pot it is therefore conservative — you can draw harder in the bridge years precisely because a second income starts later.
Tax is the binding constraint at this size
Across the ages on this page, £900,000 pays between £210,000 and £274,000 in income tax over the whole plan, and some years cross into the higher-rate band. That is not a rounding error against the pot itself, and unlike growth it is substantially within your control.
Three levers move it. A quarter of each pension withdrawal is tax-free, so the order you draw wrappers in changes the bill; the years before the State Pension starts have an unused personal allowance in them that is gone if you do not use it; and once the State Pension arrives it absorbs most of that allowance permanently, so income deferred into those years is taxed harder than income taken before them. Our calculator prices all three against your actual numbers.
Your pension becomes an ISA by age 63
On the optimised plan the SIPP inside £900,000 is emptied by age 63 — 13 years of retiring at 50 — and the ISA grows to £743,481 over the same period. The pot is not running out: the money is moving wrapper to wrapper, and the reason is tax.
In the years before the State Pension starts you have a personal allowance and a basic-rate band doing nothing. Drawing the pension down then — faster than you need to spend it, and re-sheltering the surplus in an ISA — uses that allowance while it is free. Leave the money in the SIPP instead and it is still taxable later, except that by then the State Pension has absorbed the allowance and every pound is taxed from the first. At £900,000 the SIPP is too large to move in one or two years without pushing into a higher band, so the plan spreads it over 13 — which is why the retirement age and the conversion window interact.
This is the single biggest lever the calculator finds that a spreadsheet usually misses, and it is worth £64,000 or so across the age range on a pot this size.
£900,000 effectively reaches ‘comfortable’
Retiring at 60, £900,000 supports £45,300 a year against the £45,400 the Retirement Living Standards attach to a comfortable single-person retirement. The difference is £85 a year — 0.19% — which is well inside what a projection built on fixed growth and inflation assumptions can resolve. We report it as reaching the standard, because claiming a shortfall of £85 would imply a precision this model does not have.
This is the top of the range on this site, and it is worth saying what that means: £900,000 funds the highest standard the Retirement Living Standards define, at the latest age here, with nothing left to optimise for. From this point more money does not buy a better retirement by this measure — it buys an earlier one, or an estate. Both are legitimate goals, and they pull in opposite directions, so it is worth deciding which you are aiming at rather than defaulting.
What waiting is worth
The difference between retiring at 50 and at 60 on the same £900,000 is about £6,800 a year, or £700 per year waited. Part of that is simply funding 10 fewer years; the rest is tax, and at this pot size the tax part is the larger share.
The bridge years carry an unused personal allowance and a 25% tax-free entitlement on each withdrawal, so income taken then is cheap. Once the State Pension starts it fills the allowance on its own and further pension income is taxable from the first pound. Waiting therefore buys a shorter retirement funded more efficiently — a real gain, but a smaller one than the headline spread suggests.
Questions people ask
How much income will a £900,000 pension pot give me?
Retiring at 50, about £38,600 a year sustainably to age 95. Retiring at 60, about £45,300 — £6,800 a year more for the same money, because it funds 10 fewer years and bridges less time before the State Pension.
Is £900,000 enough to retire on?
Enough for a moderate retirement from age 50, on our model. Measured against the PLSA's £32,700 moderate benchmark for a single person, £900,000 clears it at 50 and above and falls short below that. It exceeds the PLSA minimum standard at every age shown.
How much of £900,000 does retiring early actually cost?
Retiring at 50 rather than waiting spends 21% of the pot before the State Pension even starts. The 17 bridge years are the expensive ones because your pots are the only income in them — that single figure explains most of the £6,800 spread on this page.
How much tax will I pay on £900,000?
Between about £210,000 and £274,000 over the whole plan, depending on when you stop. A quarter of each pension withdrawal is tax-free and the bridge years have a spare personal allowance in them, so the order and timing of withdrawals moves that figure materially — at this pot size it is the largest controllable cost in the plan.
Run your own numbers
This page uses one fixed set of assumptions. Your real plan has your pots, your State Pension record, DB pensions, rental income and one-off events. See it modelled year by year with a free annual check-up.
Start your free annual check-up → Ready for the full tool? See FIRElogic Pro pricing