Financial Independence Calculator guide
This calculator estimates the portfolio needed to make work optional, then compares your current assets and monthly investing against that target.
Example scenario
If annual spending is $50,000 and you use a 4% withdrawal rate, the FI target is $1.25 million. A $150,000 portfolio with $1,500 monthly investing at 7% annual growth may take a little over two decades to reach it.
Calculation method
The timeline compounds current assets monthly and adds monthly investing until the FI number is reached. It is an estimate, not a guarantee.
Common mistakes
Many people underestimate taxes, health care, housing repairs, inflation, and lifestyle creep. Use a conservative withdrawal rate if you want a larger safety margin.
How to use this calculator
- Enter realistic values that match your current situation.
- Press Calculate to refresh the estimate.
- Compare the main result with the supporting details in the result panel.
- Change one input at a time to see which variable affects the result most.
FAQ
Is 4% always safe?
No. It is a common planning shortcut, not a promise. Lower rates require more assets but give more cushion.
Should I use spending or income?
Use expected annual spending. FI is based on the cost of your life, not your salary.
Why test extra monthly investing?
It shows whether increasing contributions has a meaningful effect on the timeline.