How does the pension pot calculator work?
The Affordit pension pot calculator estimates how a pension pot could grow based on current savings, monthly contributions, employer contributions, investment growth, charges and the time left until retirement. It is designed as a simple pension calculator, retirement calculator and pension savings calculator for people who want a quick educational projection rather than a regulated recommendation.
You enter your current age, target retirement age, current pension pot, personal contribution, employer contribution, assumed annual growth, annual fees and inflation. The calculator compounds your existing pot, adds future monthly contributions, deducts the fee from the growth assumption and then shows both a nominal projected pot and an inflation-adjusted value. The inflation-adjusted figure helps show that a future amount may not have the same spending power as the same number today.
The result is not a guarantee. Pension investments can rise and fall, charges can change, tax rules can change and pension access rules vary by country and product. The tool is best used for comparing scenarios: for example, what happens if you increase contributions, retire later, reduce fees or change the growth assumption.
What is a pension pot?
A pension pot is the money built up in a pension account through your contributions, employer payments and potential investment growth. In a workplace pension, money is usually paid in each month by you and, where available, your employer. That money is normally invested, so the pot can grow or fall depending on investment performance, fees and time in the market.
A pension pot is different from a bank savings account because it is usually designed for long-term retirement saving. You may not be able to access it until a certain age, and the way you take money out can affect tax, income and how long the pot lasts. This calculator focuses on the size of a future pot, not on a personalised pension strategy.
How much pension will I have at retirement?
If you are asking "how much pension will I have", the answer depends on several moving parts: your current age, current pension pot, monthly contributions, employer contributions, retirement age, investment growth, fees and inflation. A pension projection calculator or retirement pot calculator can help you test these assumptions quickly.
For example, someone with many decades until retirement may see a large difference from small monthly changes because contributions have longer to compound. Someone close to retirement may find that increasing contributions still helps, but there is less time for investment growth to do the heavy lifting. That is why the future pension pot calculator shows years to retirement and scenario insights alongside the main result.
The projection should be treated as a planning estimate. It does not include investment volatility, tax, product-specific charges, State Pension entitlement or future rule changes. Use it to understand directionally how the numbers interact, then consider regulated advice if you need a personal recommendation.
How much should I pay into my pension?
There is no single answer to how much you should pay into your pension. It depends on your income, essential costs, retirement goals, employer contributions, retirement age, other savings, debts and desired retirement income. This pension contribution calculator does not tell you what to do; it lets you compare different monthly contribution levels so you can see how the projection changes.
One useful approach is to test a baseline contribution, then try adding a small amount each month. The calculator shows how adding 50 or 100 per month could affect the projected pot. You can also test retiring later, changing assumed growth or adjusting fees. These comparisons can make the trade-offs clearer without pretending to offer advice.
Why employer contributions matter
Employer contributions can materially increase the final pot over time because they add extra monthly contributions that can compound. If an employer contributes every month, the pension pot is not just growing from your own payments. It is also receiving additional money that may benefit from long-term investment growth.
This is why the calculator separates your total contributions from employer total contributions. Seeing the two side by side can help explain how much of the projected pension pot comes from your own payments, how much comes from employer payments and how much comes from estimated investment growth.
Why fees and inflation matter
Fees reduce net growth. If the expected annual growth rate is 5% and the annual fee is 0.5%, this calculator uses a net annual growth assumption of 4.5% before converting it into a monthly growth rate. Over many years, even small fee differences can affect the final projection because they are applied throughout the compounding period.
Inflation matters because it reduces future spending power. A projected pot of 500,000 in several decades may not buy the same lifestyle that 500,000 buys today. The inflation-adjusted estimate shows the projected pot in today's spending-power terms using the inflation assumption you enter. This is still only an estimate, but it gives useful context.
Pension pot vs retirement income
A pension pot is not the same as retirement income. The pot is the total amount built up. Retirement income depends on how you access that pot, how much you withdraw, investment returns during retirement, tax, pension rules, charges and personal circumstances. Two people with the same pot could have very different retirement income outcomes.
To give a simple illustration, this retirement savings calculator uses a 4% withdrawal rule to estimate possible annual and monthly income. This is not a guarantee and not a recommendation. It is just a simple way to convert a pot into an approximate income figure so you can compare scenarios.
What this calculator does not include
- tax treatment
- state pension entitlement
- pension access rules
- investment volatility
- annuity rates
- personal financial advice
- guaranteed returns
Try different pension scenarios
Use the free pension pot calculator above to test your retirement savings route. Try changing your contribution, employer contribution, retirement age, expected growth rate, fees and inflation assumption. The aim is not to predict the future perfectly, but to understand which inputs make the biggest difference.
You can also add an optional desired retirement income. The calculator then compares the illustrative 4% annual income against that target and shows whether there may be an estimated shortfall. This can be a useful prompt for further research, but it is not advice and should not be treated as a personal pension recommendation.