FIRE number (target portfolio)
£750,000
FIRE Calculator - When Can I Retire?
Estimate how long it may take to reach financial independence based on your savings, monthly investments, expected return, withdrawal rate, and target lifestyle.
Inputs
Results
Estimated retirement date
Aug 2046
Time to FIRE
20y 5m
Projected portfolio at FIRE
£752,411
Total contributions
£295,000
Total growth
£457,411
Growth chart
Projected balance by year.
Start (Y1)
£66,079
End (Y20)
£725,902
Total interest
£435,902
Total contributed
£290,000
Yearly breakdown
See how contributions and interest build over time.
Year 1
£66,079
Contributed (year)
£12,000
Total contributions
£62,000
Total interest
£4,079
Year 2
£83,321
Contributed (year)
£12,000
Total contributions
£74,000
Total interest
£9,321
Year 3
£101,809
Contributed (year)
£12,000
Total contributions
£86,000
Total interest
£15,809
Year 4
£121,634
Contributed (year)
£12,000
Total contributions
£98,000
Total interest
£23,634
Year 5
£142,892
Contributed (year)
£12,000
Total contributions
£110,000
Total interest
£32,892
Year 6
£165,686
Contributed (year)
£12,000
Total contributions
£122,000
Total interest
£43,686
Year 7
£190,129
Contributed (year)
£12,000
Total contributions
£134,000
Total interest
£56,129
Year 8
£216,338
Contributed (year)
£12,000
Total contributions
£146,000
Total interest
£70,338
Year 9
£244,442
Contributed (year)
£12,000
Total contributions
£158,000
Total interest
£86,442
Year 10
£274,578
Contributed (year)
£12,000
Total contributions
£170,000
Total interest
£104,578
Year 11
£306,892
Contributed (year)
£12,000
Total contributions
£182,000
Total interest
£124,892
Year 12
£341,542
Contributed (year)
£12,000
Total contributions
£194,000
Total interest
£147,542
Year 13
£378,697
Contributed (year)
£12,000
Total contributions
£206,000
Total interest
£172,697
Year 14
£418,538
Contributed (year)
£12,000
Total contributions
£218,000
Total interest
£200,538
Year 15
£461,259
Contributed (year)
£12,000
Total contributions
£230,000
Total interest
£231,259
Year 16
£507,068
Contributed (year)
£12,000
Total contributions
£242,000
Total interest
£265,068
Year 17
£556,189
Contributed (year)
£12,000
Total contributions
£254,000
Total interest
£302,189
Year 18
£608,861
Contributed (year)
£12,000
Total contributions
£266,000
Total interest
£342,861
Year 19
£665,340
Contributed (year)
£12,000
Total contributions
£278,000
Total interest
£387,340
Year 20
£725,902
Contributed (year)
£12,000
Total contributions
£290,000
Total interest
£435,902
What FIRE means
FIRE stands for Financial Independence, Retire Early. The core idea is to build a portfolio large enough that your investments can cover your ongoing spending, giving you more freedom over how and when you work. For some people that means stopping work entirely; for others it means part-time work, lower-stress work, or simply having stronger financial security.
The 4% rule is a planning shortcut that says a portfolio may support annual withdrawals of about 4% in the first year of retirement, with later withdrawals adjusted for inflation. That is why FIRE targets are often estimated as annual expenses multiplied by 25. It is useful for scenario planning, but it is not a guarantee, because real outcomes depend on market returns, inflation, taxes, fees, and your spending flexibility.