Pension Gap Calculator (UK)
See whether you are on track for the retirement income you want, and how much more you would need to save each month to close any gap.
Your details
The total value of your pension savings today.
Total going in each month, including any employer contributions.
A long-term average growth rate. 4–5% is a commonly used cautious estimate.
Your results
Your figures appear here as you fill in your details.
This calculator is for educational purposes only and is not financial advice. Results are estimates based on the assumptions you provide and your actual outcome may differ. For personalised advice, please consult a qualified financial adviser.
How this works
Your projected pot combines two parts:
- Your current pot, grown to retirement — compounded monthly at your expected annual return.
- Your future contributions — the future value of saving your monthly amount every month until retirement.
We then compare that projection against a required pot of about 25× your desired annual income, which corresponds to a roughly 4% annual withdrawal rate — a commonly used sustainable-withdrawal guideline.
If there is a shortfall, the "extra monthly saving" figure is the additional amount you would need to contribute each month — at the same assumed return — to close it by your retirement age.
Assumptions
- Growth is a constant annual rate, compounded monthly. Real returns vary year to year.
- The 25× target is a simplification and ignores the State Pension, other income, tax, and inflation.
- Contributions are assumed to stay level until retirement.
Last updated . Figures are UK-specific — check current rates on GOV.UK before acting.