How much do you need to retire in the UK?

Retirement isn't an age. It's a number — the pot where your investments quietly cover your life.

The simple formula

Start with the rough rule most people use: annual spending ÷ safe withdrawal rate (about 4%) = your number. If you spend £30,000 a year, that's roughly £750,000. It turns a vague dream into an actual target with a timeline.

Don't forget the State Pension

Your pot doesn't have to cover everything. The full new State Pension is around £11,500 a year from about age 67. That shrinks the private pot you need — you only have to cover the gap above the State Pension, plus the years before it starts. For many people that changes the number dramatically.

The UK caveats that matter

The 4% rule comes from US historical data over 30-year retirements. For an early UK retiree with a longer horizon, it's sensible to lean nearer 3–3.5% to be safe. Watch sequence risk — a bad run in your first few years of drawing down does the most damage. And note the rule is already inflation-adjusted: you increase your withdrawal with inflation each year, so it's designed to hold its real value.

Find your number

The maths is simple, but seeing it with your own figures is what makes it real. Use the free FIRE / Freedom Number calculator to find your target and the estimated years to reach it — then let compounding do the heavy lifting.