FIRE Calculator
FIRE stands for Financial Independence, Retire Early — the point where your investments generate enough to cover your living costs without a salary. Reaching it comes down to two numbers: the corpus you need, and how long a disciplined savings rate takes to build it. This FIRE calculator estimates your FIRE number from your annual expenses and a safe withdrawal rate, then projects the years of investing required, so you can see whether early financial independence is within reach and what it would take to get there.
The 4% rule is a common baseline.
FIRE Number
₹1,50,00,000
The corpus at which your investments can fund your lifestyle.
Time to Financial Independence
10.1 years
About the FIRE Calculator
A FIRE calculator estimates the size of the investment corpus that would let you stop working and live off withdrawals — your FIRE number. It derives this from your expected annual expenses and a safe withdrawal rate, and often projects how many years of investing at your current savings rate it takes to reach that corpus.
Why it is useful
FIRE can feel like an abstract dream until you attach a number to it. The calculator turns it into a concrete target and timeline, showing how your savings rate, expenses, and expected return each move the finish line. Even if you never fully retire early, the exercise reveals how close financial independence really is.
How the calculation works
The core formula is: FIRE number = annual expenses ÷ safe withdrawal rate. At a 4% withdrawal rate this is the same as annual expenses × 25, since 1 ÷ 0.04 = 25. The calculator then works out how many years of investing your surplus, compounding at an assumed return, it takes to accumulate that corpus.
Key inputs explained
- Annual expenses: Your expected yearly spending in retirement, in today's money.
- Safe withdrawal rate: The percentage you plan to withdraw each year, often 3–4%.
- Current investments: The corpus you have already built towards independence.
- Monthly investment: How much you add each month while working towards FIRE.
- Expected return: The annual return you assume your portfolio earns.
Example calculation
Inputs
- Annual expenses
- ₹9,00,000
- Safe withdrawal rate
- 4%
- Current corpus
- ₹25,00,000
- Monthly investment
- ₹75,000
- Expected return
- 11% p.a.
Calculation breakdown
- FIRE number
- 9,00,000 ÷ 0.04 = ₹2.25 crore
- Or equivalently
- 9,00,000 × 25 = ₹2.25 crore
- Time to reach it
- Investing ₹75,000/month at 11% from ₹25 lakh
At a 4% withdrawal rate this person needs a ₹2.25 crore corpus. Starting from ₹25 lakh and investing ₹75,000 a month at 11%, they reach it in roughly 10 years — after which 4% a year, about ₹9 lakh, can cover their expenses.
Benefits
- Turns early retirement from a vague goal into a clear corpus target.
- Shows how your savings rate and expenses shape the timeline.
- Lets you test more conservative withdrawal rates for a margin of safety.
Limitations
- The 4% rule is based on historical data and is not guaranteed to hold.
- High and uneven inflation in India can erode a fixed withdrawal plan.
- It excludes large future costs such as healthcare and family support.
Tips
- Use a more conservative 3–3.5% rate to allow for Indian inflation.
- Estimate expenses honestly, including health cover and one-off costs.
- Raising your savings rate shortens the timeline far more than chasing returns.
Explore related calculators
About this calculator
The FIRE Calculator is built and maintained by the PaisaBot team. All calculations run instantly in your browser using established financial formulas, and we use high-precision arithmetic to keep the results reliable.
Data accuracy: Interest rates, tax slabs, and scheme rules are updated periodically, but figures can change with RBI, government, and lender revisions. Always confirm the latest rates with your bank or an official source before acting.
Educational purpose: This tool is provided for general information and financial education only. It does not constitute investment, tax, or legal advice. For decisions specific to your situation, please consult a qualified financial advisor.