Retirement Calculator
Adjust your details and see your projected retirement balance, monthly income, and savings growth — instantly.
Download a branded PDF report with your inputs, projections, and growth chart.
Savings growth over time
Assumptions
- • Returns compound monthly at the rate you choose (default 7%).
- • Inflation reduces purchasing power at the rate you choose (default 2.5%).
- • Monthly retirement income uses the 4% safe-withdrawal rule on your nominal balance.
- • Estimates are for education only and don't constitute financial advice.
Common retirement questions
Quick answers to the questions this calculator is built to solve.
How long will my retirement savings last?
It depends on your withdrawal rate, returns, and inflation. A common rule of thumb is the 4% rule: withdrawing 4% of your starting balance (adjusted for inflation each year) gives a high probability your money lasts ~30 years. Use the calculator above to model your own draw-down, then read our 4% rule guide for the full picture.
When can I retire?
You can retire when your invested savings can safely replace your spending. The fastest way to estimate this is to multiply your desired annual spending by 25 (the inverse of 4%). If your projected balance at a target age clears that number, that age is realistic. The calculator shows the year your balance crosses the threshold.
How much do I need to retire?
Most planners target 25× your annual spending in invested assets, plus a cash buffer for the first 1–2 years. For a £/$40,000 lifestyle that's roughly £/$1,000,000. Your number is lower if you'll have a state pension, Social Security, or rental income offsetting spending.
Does this calculator account for inflation?
Yes. You set an expected inflation rate and the projection shows both nominal (future £/$) and real (today's £/$) balances, so you can see your true purchasing power at retirement.
Dig deeper: the 4% rule explained, how much you need to retire, and how to use a retirement savings calculator.