Build wealth · UK
Pension Calculator
See what your pension could be worth by the time you retire. Add your current pot, your and your employer's contributions and tax relief to project the pot and its growth.
Adds basic-rate tax relief to your contributions. Investment growth is not guaranteed. An estimate to help you plan, not financial advice.
- Projected pot
- £440,620
- Paid in each month
- £308
- Years paying in
- 32
- Growth as a share
- 66%
What builds your pension pot
Four things grow a pension: the money you pay in, the tax relief the government adds, your employer's contributions, and the investment growth on top of it all. Time is the biggest lever, because growth compounds on a bigger and bigger pot. Paying in a little more, a little earlier, can make a large difference by the time you retire.
Paying in by giving up salary can be even more efficient. See the salary sacrifice calculator for how that works.
Common questions
How much will my pension be worth?
It depends on what you have saved so far, how much you and your employer pay in, the tax relief added, how long until you retire and how your investments grow. Enter your figures above and the calculator projects your pot at retirement, splitting out each part.
How does pension tax relief work?
When you pay into a pension, the government tops it up. A basic-rate taxpayer paying £80 has it grossed up to £100 in the pot, the 20% relief the provider reclaims. Higher and additional-rate taxpayers can claim more through Self Assessment, but that extra goes to you rather than the pot, so it is not included here.
How much can I pay into a pension each year?
Most people can pay in up to £60,000 a year across all pensions and still get tax relief, the annual allowance for 2026/27, as long as it is within 100% of your earnings. Pay in more and the excess can be taxed. High earners and those who have started drawing a pension may have a lower allowance.
What growth rate should I assume?
Investment returns are not guaranteed and vary year to year, so any figure is only a guide. A long-term assumption of around 4% to 6% a year before charges is common for a mixed pension fund, but your own fund and charges will differ. Try a few rates to see the range.
Will I also get the State Pension?
Most likely, yes, on top of this. The full new State Pension is £241.30 a week in 2026/27, around £12,550 a year, if you have enough National Insurance years. State Pension age is currently 66, rising to 67 between 2026 and 2028. This calculator covers your private or workplace pot only.
How much income will my pension pot give me?
This calculator projects the size of your pot, not the income it pays. You can usually take 25% of the pot tax-free, then turn the rest into income, either by buying an annuity (a guaranteed income for life) or by drawing down the pot while it stays invested. A common rule of thumb is that drawing around 4% of the pot a year has a fair chance of lasting, but annuity and safe drawdown rates change, so treat any income figure as a rough guide.
About this calculator
Projects your pot using standard compounding, adding basic-rate tax relief (your contribution grossed up by 25%) and your employer's contributions, verified against gov.uk. It assumes a steady growth rate and that contributions stay a fixed share of your salary; real returns vary and are not guaranteed, and it does not adjust for inflation or charges. The annual allowance is £60,000 for 2026/27. An estimate to help you plan, not financial advice. Last updated June 2026.