How much do I need to retire in the UK?
There is no universal number. The retirement pot you need is the answer to a calculation, and the inputs are personal: how much you plan to spend each year, when you plan to stop working, what other income you expect, and how long you need the money to last. This guide explains how to work it out.
Step 1 — Estimate your annual spending in retirement
The single biggest input is your target annual spending after tax. Most people start by looking at their current household spending, then adjusting: subtract commuting, work clothes, mortgage payments that will have ended, and pension contributions; add anything you expect to do more of, such as travel, hobbies or family support.
If you would prefer a benchmark, the PLSA Retirement Living Standards publish three reference levels, updated annually. The 2024 figures (excluding housing costs, in today's money) are:
- Minimum: around £14,400 per year for a single person, around £22,400 for a couple. Covers essentials but little discretionary spending.
- Moderate: around £31,300 single, £43,100 couple. Includes a modest car, a one-week holiday in Europe and regular eating out.
- Comfortable: around £43,100 single, £59,000 couple. Two foreign holidays, a more recent car, a larger clothing and personal-care budget.
These are useful sense-checks rather than a target you must hit; many readers will need less, some will need more. Pick the level closest to the lifestyle you want.
Step 2 — Subtract guaranteed income
The money your investments must produce is your spending target minus any income you will receive from other sources. For most UK retirees, the largest of these is the new State Pension, currently around £11,500 per year (2024–25, full rate), payable from State Pension age. A defined-benefit (final-salary or career-average) pension counts here too, as does any rental income you plan to keep.
If a single retiree wants £31,300 per year and expects the full new State Pension, the gap is around £19,800 per year — but only after State Pension age. Before that age, the investments must cover the full target.
Step 3 — Apply a withdrawal rule to size the pot
The simplest planning rule of thumb is the 25× rule: multiply the annual amount you need to withdraw from investments by 25. The result is a rough indication of the pot you need at retirement. The figure 25 comes from assuming a 4% safe withdrawal rate, which is itself an approximation discussed in our companion article on the 4% rule for UK retirement.
For the worked example above — £19,800 per year from investments — the 25× rule suggests a pot of about £495,000 in today's money, alongside the State Pension. If you need the full £31,300 from investments because you retire before State Pension age, the indicated pot rises towards £780,000 plus a bridge buffer for the early years.
Step 4 — Adjust for the parts the rules of thumb skip
The 25× rule gives you a starting figure, not a final answer. In practice, several adjustments are usually warranted:
- Tax on withdrawals. Pension drawdown is taxed as income. Pots inside an ISA come out tax-free; pots inside a SIPP do not. Two retirees with identical pre-tax pots can have very different spendable incomes.
- Investment fees. A platform and fund fee of 0.5% per year reduces a 4% withdrawal to an effective 3.5%, and compounds heavily over a long retirement.
- Sequence-of-returns risk. A poor decade of returns early in retirement is more damaging than the same decade later. The 25× rule assumes a smooth path; reality does not.
- Longevity. A 65-year-old non-smoker today has a meaningful probability of living to 95 or beyond. Plans built around a 25-year retirement may need to last 30 or 35.
- Inflation. Today's £31,300 is much less spending power in 20 years. Use figures in real (i.e. inflation-adjusted) terms when comparing across time.
A worked example
Consider a single saver, currently 45, who wants to retire at 60 on the PLSA "moderate" lifestyle of £31,300 per year. State Pension age is 67, so for the first seven years of retirement the investments must cover the full £31,300; from 67 onwards, roughly £19,800.
Using a blended planning estimate, the indicated pot at age 60 is in the region of £600,000 to £750,000 in today's money, depending on assumed returns, fees and how cautiously you size the bridge between retirement and State Pension age. Running the same scenario in the planner, including tax bands and a Monte Carlo simulation, will narrow that range for your specific situation.
What to do next
Rules of thumb are useful for orienting; a projection is necessary for deciding. The Pension AI planner takes the figures from this article — current age, target retirement age, expected spending, State Pension and existing pots — and returns a projection that includes UK income tax bands, the 25% tax-free lump sum, drawdown and Monte Carlo paths.