FIRE Number Calculator
Your financial-independence number at chosen withdrawal rates — 4%, 3.5% and 3% side by side with years-to-FIRE.
Formula
The 4% rule came from US 30-year retirements; longer horizons, Indian inflation and sequence risk argue for 3-3.5% (28-33×). The bigger lever is the denominator — every lakh of permanent annual expense you delete removes 25-30 lakh from the finish line.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need fire number calculator results fast? Analysts, founders, traders and finance professionals use the FIRE Number Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About FIRE Number Calculator
Your financial-independence number at chosen withdrawal rates — 4%, 3.5% and 3% side by side with years-to-FIRE. The 4% rule came from US 30-year retirements; longer horizons, Indian inflation and sequence risk argue for 3-3.5% (28-33×). The bigger lever is the denominator — every lakh of permanent annual expense you delete removes 25-30 lakh from the finish line. The governing relationship is FIRE = expenses / SWR; simulate corpus + savings to the target. The FIRE Number Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use FIRE Number Calculator
- 1Enter Annual expenses (currency), Current investments (currency), Annual savings (currency), Expected return (%) into the FIRE Number Calculator.
- 2The result is computed automatically using FIRE = expenses / SWR; simulate corpus + savings to the target — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use FIRE Number Calculator?
- ✓Computes fire number calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the FIRE Number Calculator?+
FIRE Number Calculator uses FIRE = expenses / SWR; simulate corpus + savings to the target. The 4% rule came from US 30-year retirements; longer horizons, Indian inflation and sequence risk argue for 3-3. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the FIRE Number Calculator need?+
Enter Annual expenses (currency), Current investments (currency), Annual savings (currency), Expected return (%) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the FIRE Number Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the FIRE Number Calculator?+
5% (28-33×). The bigger lever is the denominator — every lakh of permanent annual expense you delete removes 25-30 lakh from the finish line.
What is the FIRE Number Calculator based on?+
The method follows authoritative sources: Bengen (1994); Trinity study; FIRE community practice. The formula and references are shown on the page so you can verify and cite the result.
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