Introduction
The FIRE Calculator converts your annual living expenses into a target investment corpus that—when withdrawn at a chosen safe withdrawal rate—aims to provide sustainable income without employment. It is a planning tool for people exploring early retirement, partial retirement, or long-term financial independence. Use the number as a directional goal rather than a precise prescription; real-world retirement planning requires tax-aware strategies, inflation adjustments, and contingency buffers.
What is this calculator?
This calculator estimates the corpus required to fund your annual expenses indefinitely by applying a simple withdrawal-rate method. The withdrawal rate determines how much you take out of your portfolio each year as a percentage of the total corpus. A conservative withdrawal rate reduces the risk of portfolio depletion but increases the target corpus you must accumulate.
How it works
Enter your anticipated annual expenses and select a withdrawal rate (for example 3–5%). The calculator divides the annual expense by the withdrawal rate expressed as a decimal. This simple algebraic approach provides a quick estimate of the corpus needed to generate the required yearly income. It assumes a steady withdrawal each year and does not model market volatility, taxation, or changing expense patterns.
Formula
FIRE Corpus = Annual Expenses ÷ Withdrawal Rate
(Withdrawal Rate is entered as a percentage; convert to decimal for the division.)
Formula explanation
The method assumes your portfolio can sustainably support withdrawals equal to the chosen percentage each year. The withdrawal rate should reflect portfolio mix, expected real returns, and how long you need the income to last. Sequence-of-returns risk and inflation are two key factors that make the method an approximation rather than a guarantee.
Worked example
Example: Annual expenses Rs. 6,00,000, withdrawal rate 4%. Corpus = 6,00,000 ÷ 0.04 = Rs. 1,50,00,000. Under this simplifying assumption, a corpus of Rs. 1.5 crores could generate Rs. 6,00,000 per year at 4% withdrawals. Use multiple scenarios (3%–5%) to understand sensitivity to the withdrawal rate.
Benefits
- Gives a concrete target for savings and investment planning.
- Makes trade-offs between withdrawal rates and corpus size explicit.
- Useful for early-stage retirement conversations and prioritising goals.
Common mistakes
- Relying solely on a single withdrawal-rate assumption without stress testing.
- Failing to adjust for inflation, taxes, or expected large one-time costs.
- Neglecting to plan for sequence-of-returns risk early in retirement.
Related calculators
Complement with the Retirement calculator for savings planning, SWP for withdrawal sequencing, and Emergency Fund for short-term liquidity needs.
Educational note
Think of the FIRE number as a planning horizon marker: it helps you prioritise saving, reduce spending, or adapt portfolio allocation. For robust retirement planning, layer this estimate with tax-smart withdrawal sequencing, insurance planning, and scenario-based simulations such as Monte Carlo analysis performed by advisors or advanced tools.
Practical steps to move from target to plan
Translate the target into monthly savings goals, set up automated investments, choose tax-efficient accounts, and select an asset allocation that balances growth with downside protection. Reassess annually and model downside scenarios to ensure your withdrawal strategy is robust against extended market downturns.
Disclaimer: Educational only. Results are approximations and not financial advice. Consult a qualified financial professional for personalised planning.