Retirement Calculator
Enter your ages, savings, contributions and the income you would like. We project your pot and show whether it can support that income.
This calculator gives estimates for information only. It is not financial, tax or legal advice. Real results depend on lender terms, fees and local rules.
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The formula
Savings grow monthly until retirement. The pot is then drawn down evenly, in real terms, until the plan-to age.
What the calculator does
It grows your current savings and monthly contributions at the return you expect until you retire. It then works out the steady monthly income that would use up the pot exactly at your plan-to age, adjusted for inflation, so the answer is in today's money.
An example
A 30 year old with 20,000 saved who adds 500 a month at 6 percent will have about 840,000 at 65. After inflation of 2.5 percent that is worth about 354,000 in today's money. Drawn down to age 90 at 4 percent, it supports about 1,400 a month in today's money. That is well short of a 4,000 target, so they would need to save more, retire later or adjust the goal.
The levers you control
- Save more: the earlier the better, thanks to compounding.
- Retire later: each extra year adds contributions, growth, and shortens the time the pot must last.
- Adjust spending: your wanted income is the most flexible number.
What it leaves out
Taxes, pensions, Social Security or state pension, employer matches, fees and the ups and downs of real markets are not included. Treat the result as a planning aid and speak to a financial adviser about your own situation.
Examples to check
Type these into the calculator above to see how it behaves. Every result below was produced by the same calculator code that runs on this page.
| What you enter | What you get |
|---|---|
| Current age: 30; Retirement age: 65; Plan to age: 90; Current savings ($): 20000; Monthly contribution ($): 500; Expected return before retirement (% a year): 6; Expected return in retirement (% a year): 4; Inflation (% a year): 2.5; Wanted monthly income in today's money ($): 4000 | Projected savings at retirement: $840,523.72; Monthly income your savings can support (today's money): $1,408.77 |
| Current age: 45; Retirement age: 67; Plan to age: 92; Current savings ($): 150000; Monthly contribution ($): 1200; Expected return before retirement (% a year): 5.5; Expected return in retirement (% a year): 4; Inflation (% a year): 2.5; Wanted monthly income in today's money ($): 3500 | Projected savings at retirement: $1,090,266.97; Monthly income your savings can support (today's money): $2,519.03 |
Retirement Calculator: frequently asked questions
What return should I assume?
Many planners use 4 to 7 percent before retirement for a diversified portfolio, and less afterwards. Be conservative, because real returns vary.
What is the 4 percent rule?
A rule of thumb that you can withdraw about 4 percent of your pot in the first year of retirement and adjust for inflation after that. It is a guide, not a guarantee.
Is this financial advice?
No. It gives an estimate from the numbers you enter. Real offers depend on fees, tax and the lender or provider, so check the terms before you commit.
Is what I enter in this calculator saved or sent anywhere?
No. The calculation runs in your browser, so what you enter is not sent to our servers. We only count, anonymously, whether a tool ran successfully.
Is this calculator free to use?
Yes. It is free, needs no sign-up and has no usage limit.
Last reviewed: October 3, 2026