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FIRE calculator
Estimate the corpus you need for financial independence, how much to invest each month, and the age your plan reaches it. Everything is calculated in your browser from the assumptions you enter — nothing is stored.
Your assumptions
Years
Years
In today's money
Total portfolio value
What you invest each month
Nominal
Annual
4% is common
Pension, rent, etc.
Your projection
FIRE number (target corpus)
$1,776,227.86
Projected corpus at 55
$1,067,605.91
Estimated shortfall
$708,621.95
Monthly investment needed
$2,238.74
Estimated FIRE age
66
Progress to target
2.8%
Annual retirement spending at age 55, adjusted for inflation: $71,049.11. Funded by your portfolio after other income: $71,049.11.
These figures are projections from your inputs, not financial advice or a guaranteed outcome.
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Finwise tracks your accounts, investments and savings rate, then runs this same projection on your real numbers every month.
Create a free accountHow the FIRE number is calculated
- 1. Inflate your spending. Your monthly retirement spending is grown at your inflation rate for the years between your current age and your target retirement age.
- 2. Subtract other income. Pension, rental or any other retirement income reduces what the portfolio has to cover.
- 3. Divide by the withdrawal rate. The remaining annual spending divided by your safe withdrawal rate gives the target corpus — at 4%, that is 25× annual spending.
- 4. Project what you will have. Your current invested assets and monthly contributions are compounded at your expected return to your target age, which gives the projected corpus, the gap, and the monthly amount needed to close it.
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Your savings rate is the main input to this projection — check it first, then come back and see what timeline it buys.