Retirement calculator
Enter your age, what you have saved and what you put away each month. The calculator projects the pot you are on course for, converts it into a monthly retirement income, shows what inflation does to it, and measures the gap against the lifestyle you want.
WealthPath Calculator · Retirement Calculator · report generated for personal use
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A one-page summary of your projected pot, income, readiness score and the exact monthly change that closes your gap.
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How this calculator works
Contributions are applied at the start of each month and the balance grows at your expected return, compounded monthly. The projection runs from your current age to your retirement age.
Monthly retirement income applies a 4% annual withdrawal rate to the final pot, which is the conventional planning figure for a thirty-year retirement. Divide by twelve and you have a monthly budget before tax.
The readiness score compares your projected pot against the pot your target income actually needs, after that income has been inflated to your retirement year. A score of 100 means fully funded on your own assumptions.
What it deliberately does not do
It does not model tax, state or workplace pensions, variable returns or market crashes. Those are real and they matter - what this gives you is a clear baseline you can then adjust.
Treat any state or employer pension as income on top of this projection, which reduces the pot your own savings must provide.
Frequently asked questions
Is this retirement calculator free?
Yes, completely. There is no sign-up, no limit on how many times you use it, and nothing you enter is sent anywhere - the calculation runs inside your browser.
What return should I assume?
Use something you would defend to a sceptic. Many long-term plans use 5% to 7% a year for a diversified equity-heavy portfolio before inflation. Run it again two points lower to see how fragile the plan is.
Does it include my state or workplace pension?
No. Treat those as income on top of the projection, which reduces the pot your own savings need to provide.
What is the readiness score?
Your projected pot as a percentage of the pot your target income actually requires, once that income has been inflated to your retirement year. One hundred means fully funded on your own assumptions.
Why is the inflation-adjusted figure so much lower?
At 2.5% a year, prices roughly double every 28 years. Over a long horizon a large share of any headline figure is absorbed, which is exactly why the second chart exists.
Worked examples using this calculator
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