Key facts: The PLSA Retirement Living Standards describe three single-person lifestyles — roughly minimum (~£14k/yr), moderate (~£31k/yr), comfortable (~£43k/yr) (figures update annually). The full new State Pension covers ~£12k of that. A common drawdown rule of thumb: a pot supports roughly 4% withdrawal a year — so each £10k of income above the State Pension needs in the order of £250k of pot.
Start with the lifestyle, not the number
The Retirement Living Standards give the question shape: minimum covers needs with a little left; moderate adds security and flexibility — a car, a European holiday, more eating out; comfortable adds long-haul travel and generous replacement budgets. Couples need less than 2× each figure (shared costs). Pick your level honestly — then the arithmetic is mechanical.
Subtract the State Pension first
The full new State Pension pays around £12,000 a year, inflation-protected for life — the closest thing to a guaranteed annuity most people own. It nearly funds the minimum lifestyle alone, and anchors every other plan. Two actions: get your forecast at gov.uk (missing National Insurance years can often be topped up cheaply — extraordinary value), and note your State Pension age, since retiring earlier means the pot bridges the gap years solo.
Sizing the pot for the gap
Fund the gap between your target and the State Pension. Using the ~4% sustainable-withdrawal rule of thumb: a moderate single lifestyle needs ~£19k above State Pension → in the region of £450–500k; comfortable needs ~£31k → roughly £750k+. Guarantees change the maths: annuitising part of the pot buys certainty at current annuity rates, defined-benefit pensions reduce the target pound-for-pound, and retiring early or late moves every number. Treat these as planning magnitudes, not prophecy — the 4% rule is a rough compass, not a guarantee.
If the number looks far away
The levers, in rough order of power: time (start now — compounding does the heavy lifting, as our how-much-to-save guide shows), employer match (never leave it unclaimed), contribution rate (each 1% early is worth several late), carry-forward for catch-up years, and retirement age — each year later both grows the pot and shortens what it must fund. Consolidating scattered pots (safely) cuts fee drag along the way.
Turning the estimate into a plan
A pension adviser will model your real numbers — pots, DB entitlements, State Pension, target age — and show the contribution that closes your specific gap. Find a pension adviser through Nesto — free, no obligation.
Frequently asked questions
Is £500,000 enough to retire on?
With a full State Pension, a pot around that size supports roughly a moderate single lifestyle under the 4% rule of thumb — comfortably more as part of a couple with shared costs.
What is the 4% rule?
A planning heuristic: withdrawing ~4% of a diversified pot annually has historically sustained ~30-year retirements. It's a compass for sizing, not a guarantee — sequence risk and inflation matter.
Does the State Pension count toward my target?
Absolutely — ~£12k/year inflation-linked for life. Check your forecast and consider topping up missing NI years; it's often exceptional value.
What if I want to retire before State Pension age?
Your pot funds the full lifestyle through the bridge years — often the single biggest driver of a larger target. Model it explicitly.